ALGT US Equity☆

Item 1A. Risk Factors

Readers should carefully consider the risks described below before making an investment decision. Our business, financial condition or results of operations could be materially and adversely affected by any of these risks. The trading price of our common stock could decline due to any of these risks, and investors may lose all or part of their investment.

Risks Related to Allegiant

Regulatory review of Boeing’s operations could delay its production schedule, which could impact us as any delivery delays may result in lower profitability than expected and delayed growth as well as bad publicity and other consequences.

We are relying on Boeing to deliver our new 737 MAX aircraft to support airline growth and to replace aircraft we have designated for retirement or whose leases are expiring.

The FAA is working with Boeing to address quality control procedures at Boeing and its suppliers in the aftermath of the 2024 emergency landing of an Alaska Airlines Boeing 737 MAX 9 aircraft and subsequent temporary grounding of all 737 MAX 9 aircraft pending inspections of the door plug which was the source of the issue. As part of the focused attention on Boeing’s production, inspection and quality assurance processes, the FAA has indicated that aircraft production rates will be capped until they are fully satisfied with Boeing's quality practices. Although deliveries under the contract have begun and we have accepted delivery of seven aircraft as of February 21, 2025, these factors could delay future deliveries to us. As a result, our expectation of the number of deliveries in each year differs from the contractual provisions. Delays in delivery will likely delay our ability to capitalize on the expected profitability from the addition of these aircraft to our fleet, increase maintenance costs for aircraft that would have otherwise been retired and increase our interest costs for funds borrowed for pre-delivery deposits. In addition, our inability to add these aircraft to our operating fleet as planned may adversely impact our unit costs as fewer available seat miles will be produced without these aircraft in our operating fleet and given our announced plan to retire certain of our Airbus aircraft. We are also counting on the timely addition of our firm 737 MAX order to meet environmental goals we have published in our sustainability reports.

Any subsequent FAA action or any future adverse 737 MAX events or safety concerns might disproportionately impact us as we rely on these new aircraft to augment our fleet as well as to replace aircraft to be retired.

As more than 1,100 737 MAX aircraft remain in service throughout the world and FAA oversight and Boeing process improvements should further assure the public regarding safety issues, we continue to believe that the addition of the 737 MAX aircraft will be safe, reliable and accretive to our profitability. However, negative publicity from these or future events could reflect poorly on our planned 737 service and our Company.

Increases in fuel prices or unavailability of fuel would harm our business and profitability.

Fuel costs constituted approximately 22.8 percent of our total operating expenses in 2024. Significant increases in fuel costs have negatively affected our operating results in the past, and future fuel cost volatility could materially affect our financial condition and results of operations.

Both the cost and availability of aircraft fuel are subject to many economic and political factors and events occurring throughout the world over which we have no control. Meteorological events may also result in short-term disruptions in the fuel supply. Aircraft fuel availability is also subject to periods of market surplus and shortage, and is affected by demand for heating oil, gasoline, and other petroleum products. Due to the effect of these events on the price and availability of aircraft fuel, our ability to control this cost is limited, and the price and future availability of fuel cannot be predicted with any degree of certainty. Due to the high percentage of our operating costs represented by fuel, a relatively small increase in the price of fuel could have a significantly negative impact on our operating costs. A fuel supply shortage or higher fuel prices could result in reduction of our service during the period affected.

We have made a business decision not to purchase financial derivatives to hedge against increases in the cost of fuel. This decision may make our operating results more vulnerable to the impact of fuel price increases.

Our reputation and financial results could be harmed in the event of an accident or restrictions affecting aircraft in our fleet.

An accident involving one of our aircraft, even if fully insured, could result in a public perception that we are less safe or reliable than other airlines, which would harm our business. Further, there is no assurance that the amount of insurance we carry would be sufficient to protect us from material loss. Because we are smaller than most airlines, an accident would likely adversely affect us to a greater degree than a larger, more established airline.

In addition, any other airline accident would receive national attention and could depress demand for air travel in general for a period of time.

In-flight emergencies affecting our aircraft, and resulting media attention, could also contribute to a public perception regarding safety concerns and a loss of business.

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The FAA could suspend or restrict the use of our aircraft in the event of actual or perceived mechanical problems or safety issues while it conducts its own investigation, whether involving our aircraft or another U.S. or foreign airline’s aircraft. Our business could also be significantly harmed if the public avoids flying our aircraft due to an adverse perception of the aircraft we utilize because of safety concerns or other problems, whether real or perceived, or in the event of an accident involving these aircraft.

Our low-cost structure is one of our primary competitive advantages, and many factors could affect our ability to control our costs.

Our low-cost structure is one of our primary competitive advantages. However, we have limited control over a large portion of our costs. Our two largest line-item costs are salaries and benefits and fuel costs over which we have limited control. The salaries and benefits costs applicable to a majority of our employees are established by the terms of collective bargaining agreements, which are typically set at prevailing industry rates and are subject to increase when each collective bargaining agreement is amended. See “— Increased labor costs, could result from industry conditions and could be impacted by labor-related disruptions.” As we indicate in “—Increases in fuel costs or unavailability of fuel could harm our business and profitability”, the cost of fuel is subject to many economic and political factors and events over which we have no control.

In addition, we have limited control over airport and related costs, taxes, the cost of meeting changing regulatory requirements, our interest cost to access financing and the effect of inflation on our costs. If our unit costs increase and we are no longer able to maintain a competitive cost advantage, it could have a material adverse effect on our business, results of operations and financial condition as low costs enable us to offer low fares on which we rely to stimulate demand for our airline services.

Increased labor costs could result from industry conditions and could be impacted by labor-related disruptions.

Labor costs constituted approximately 29.8 percent of our total operating costs in 2024, our largest expense line item. Labor costs are generally rising and there is much competition for qualified candidates.

Further, we have four employee groups (pilots, flight attendants, flight dispatchers and maintenance technicians) which have elected union representation. These groups represent approximately 61.8 percent of our employees (full-time equivalent).

In 2016, we reached a collective bargaining agreement with the International Brotherhood of Teamsters, representing our pilots. The pilot agreement has been amendable since 2021 and in 2023, the parties jointly sought mediation through the National Mediation Board (the "NMB"). We continue to mediate with the union through the NMB. Pilot pay scales have increased significantly in the industry and we expect our next contract with this work group to reflect industry competitive rates which will be significantly higher than our current pilot rates. In the meantime and in recognition of these higher prevailing pilot pay rates, in May 2023, we began to accrue a retention bonus which will become payable to our pilots who remain with us until a new collective bargaining agreement is ratified.

An agreement with the Transport Workers Union for the flight attendant group was approved in 2017 and became amendable in 2022. A new agreement with this union was ratified in April 2024 under which the flight attendants received a ratification bonus and will receive pay increases during the term of the agreement. This contract will become amendable in 2029.

We also have agreements with the International Brotherhood of Teamsters for our flight dispatchers and for our maintenance technicians. In 2023, we entered into agreements with both groups to increase pay rates and extend all other terms of these agreements by two years, extending the CBA amendable dates until 2026 for our flight dispatchers and until 2028 for maintenance technicians.

Future union contracts with these, or other, work groups could put additional pressure on our labor costs.

If we are unable to reach agreement on the terms of collective bargaining agreements in the future, or if we experience wide-spread employee dissatisfaction, higher attrition in these work groups, difficulty in hiring sufficient personnel or work slow downs or stoppages could have an adverse effect on our operations and future results.

The inability to attract and retain qualified flight crew and other airline personnel could limit our growth plans and adversely affect our business and results of operations.

We compete against other U.S. airlines for pilots, aircraft maintenance technicians and other labor. In 2023 and early 2024, there was a scarcity of pilots for hire. Due to COVID related early retirements, mandatory age-related retirements, and pent-up consumer demand for travel, the industry experienced a period of unprecedented growth and hiring from virtually every carrier, which also drove significant increases in compensation through collective bargaining. This industry-wide growth slowed significantly in the second half of 2024, driven by aircraft availability (e.g., production delays), failed mergers, and the inability of certain carriers to execute on their plans to grow to profitability. While at the current time, we are appropriately staffed and our attrition rate is stable, another unprecedented period of industry-wide growth and hiring could negatively impact our ability to attract new pilots or retain our current pilots. The lack of a new collective bargaining agreement with our pilots (under negotiation since 2021) could exacerbate the challenge to maintain sufficient numbers of pilots to fly our published schedule and to grow our network.

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Beyond pilot staffing, the entire airline industry, including our third party vendors, experienced the same challenges during that period of unprecedented growth, and may continue to experience challenges in hiring and retaining other labor positions, such as aircraft maintenance technicians, ground handling and customer service agents, and flight attendants should that trend resurface. Our and our vendors' inability to attract and retain personnel for these positions could negatively impact our results of operations and growth plans. Additionally, we may be required to increase our wage and benefit packages, or pay increased rates to our vendors, to retain these positions. This would result in increased overall costs and may adversely impact our results of operations.

A breach in the security of personal information, breach in credit card data or system disruptions caused by security breaches or cyberattacks – including attacks on those parties we do business with – could harm our ability to conduct our operations and could have a material adverse effect on our financial position or results of operations.

We receive, retain, and transmit certain personal information about our customers. Additionally, our online operations rely on the secure transmission of customer data. We use third party systems, integrated software, and advanced cyber security tools in order to protect the customer data we obtain through the course of our business. Although we use a variety of security techniques to protect customer information, a compromise of our physical or network security systems through a cyberattack would create the risk that customers’ personal information might be obtained by unauthorized persons.

In addition, such security related events could be widely publicized and could adversely affect our reputation with our customers, vendors and stockholders, could harm our competitive position particularly with respect to our e-commerce operations, and could thereby materially adversely affect our operations, revenues, results of operations and financial position. Consequences could include litigation, other legal actions against us, and/or the imposition of penalties, fines, fees or liabilities. We currently are self-insured against these risks. Moreover, a security compromise or ransomware event could disrupt flight operations, e-commerce, in part or whole, and/or require us to devote significant management resources to address the problems created by the issue and to expend significant additional resources to further upgrade the security measures we employ to guard personal and confidential information against cyberattacks and other attempts to access or otherwise compromise such information and could result in a disruption of our operations, particularly our digital operations.

The way organizations handle customer data is subject to increasing legislation and regulation, typically intended to protect the privacy of customer data received, retained, and transmitted. We could be adversely affected if we fail to comply with existing rules or practices, or if legislation or regulations are expanded to require changes in our business practices. These privacy developments are difficult to anticipate and could adversely affect our business, financial condition, and results of operations.

We rely heavily on automated systems to operate our business and any failure of these systems could harm our business.

We depend on automated systems to operate our business, including our air reservation system, telecommunication systems, our website, and other automated systems. Our continuing initiatives to enhance the capabilities of our automated systems could increase the risk of automation failures. Any failure by us to handle our automation needs could negatively affect our internet sales (on which we rely heavily) and customer service, and result in lost revenues and increased costs.

Our website and reservation system must be able to accommodate a high volume of traffic and deliver necessary functionality to support our operations. Our automated systems cannot be completely protected against events that are beyond our control, such as natural disasters, telecommunications failures, malware, ransom ware, security breaches or cyber-security attacks. Although we have implemented security measures and have information systems disaster recovery plans in place, we cannot assure investors that these measures are adequate to prevent disruptions or losses. Substantial or repeated website, reservations system, or telecommunication system failures could decrease the attractiveness of our services. Any disruption to these systems could result in the loss of important data and revenue, increase in expenses, and harm to our business.

Unfavorable economic conditions may adversely affect travel from our markets to our leisure destinations.

The airline industry is particularly sensitive to changes in economic conditions. Unfavorable U.S. economic conditions have historically driven changes in travel patterns and have resulted in reduced discretionary spending for leisure travel. Unfavorable economic conditions could impact demand for airline travel in our under-served cities to our leisure destinations. During difficult economic times, we may be unable to raise prices in response to fuel cost increases, labor, or other operating costs, which could adversely affect our results of operations and financial condition.

The successful operation of our Sunseeker Resort and ability to enter into a suitable arrangement with a capital partner are dependent on commercial and economic factors, some of which are beyond our control.

We opened Sunseeker Resort in Southwest Florida in December 2023 and incurred significant operating losses in 2024. Although we are seeing improvement in recent months, we expect losses to continue in 2025. The successful operation of the project will be subject to the usual risks of any new business, including risks of gaining sufficient interest from vacationers to stay in our hotel and suites, the desirability of the project’s location, competition, retention of the management team, unfavorable weather, the ability to attract, train and retain sufficient numbers of suitable line employees and the ability to profitably operate the hotel and related offerings at the rates offered.

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We have announced that we are in the process of seeking a capital partner to purchase the Resort or an interest in the Resort. We cannot assure investors whether or when we will be able to consummate such a transaction on acceptable terms or at all.

The success of our proposed alliance with VivaAerobus will depend on our ability to obtain necessary government approvals and other factors.

We will be able to implement the joint alliance with VivaAerobus as planned only if the DOT grants us antitrust immunity, and assuming the continued approval from Mexican authorities. Although we believe we should qualify for these approvals, there can be no assurance when or if we will be able to obtain them. DOT approval has now been held up indefinitely pending the outcome of diplomatic engagement on broader treaty issues. We cannot assure investors that the change in Presidential administration will bring a resolution to this matter.

Many of the U.S. airports from which we hope to offer this service do not currently qualify to offer international service. The initiation of this service from these airports will depend on the airport satisfying the requirements for international service, for which we can provide no assurance.

Prior to offering international service on our website, we will need to implement the necessary systems to accommodate international travel and to meet the various requirements imposed by the U.S. and Mexico. Although we have implemented many of these systems, there is no assurance that these requirements will be met in time for the expected launch of these services.

For Mexican routes to be operated by VivaAerobus, we will be relying on them to provide our customers with the quality flight experience our customers expect when traveling on our airline. Otherwise, the success of the joint alliance and our reputation may suffer.

Increases in taxes could impact demand for our services.

At any time, Congress may consider legislation that could increase the amount of Federal Excise Tax (“FET”) and/or one or more of the other government fees imposed on air travel. By increasing the overall price charged to passengers, any additional taxes or fees could lessen the demand for air travel or force carriers to lower fares to maintain demand. Increased taxes and fees per passenger may impact our load factors more than other airlines as our lower fares are designed to stimulate demand for our services, and taxes and fees may represent a higher proportion of our overall price than for other airlines.

FAA limitations could impact our ability to grow in the future.

As with all scheduled airlines, the FAA must approve each aircraft we utilize and each airport we serve. Although there are no generic restrictions on growth in place at the current time, future limitations from the FAA could potentially hinder our growth.

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Our indebtedness, debt service obligations and other commitments could adversely affect our business, financial condition and results of operations as well as limit our ability to react to changes in the economy or our industry and prevent us from servicing our debt and operating our business.

Our debt and finance lease obligations as of December 31, 2024 totaled $2.07 billion net of related costs. In addition, we are party to a purchase agreement with The Boeing Company to purchase 50 Boeing 737 MAX aircraft, of which 46 are expected to deliver in 2025, 2026 and 2027. This indebtedness, the Boeing purchase agreement and other commitments with debt service and fixed charge obligations could:

•make it more difficult for us to satisfy our obligations with respect to our indebtedness, and any failure to comply with the obligations of any of our debt instruments, including financial and other restrictive covenants, could result in an event of default under agreements governing our indebtedness;

•make it more difficult to satisfy our other future obligations, including our obligations to pay the purchase price in respect of current and future aircraft purchase contracts;

•require us to dedicate a substantial portion of our cash flow to pay principal and interest on our debt, which will reduce the funds available to fund internal growth through working capital, capital expenditures, and for other purposes;

•limit our flexibility in planning for, or reacting to, changes in our business, the competitive environment, legislation and our industry;

•make us more vulnerable to adverse changes in our business, economic, industry, market or competitive conditions and adverse changes in government regulation;

•expose us to interest rate and pricing increases on indebtedness and financing arrangements as general interest rates rise;

•restrict us from pursuing strategic acquisitions or exploiting certain business opportunities;

•subject us to a greater risk of non-compliance with financial and other restrictive covenants in financing arrangements;

•limit, among other things, our ability to obtain additional financing for working capital, capital expenditures, debt service requirements, execution of our business strategy and other purposes or raise equity capital in the future and increasing the costs of such additional financings; and

•place us at a competitive disadvantage compared to our competitors who may not be as highly leveraged or who have less debt in relation to cash flow.

In addition, our ability to service our indebtedness will depend on our future performance, which will be affected by prevailing economic conditions and financial, business, regulatory and other factors. Many of these factors are beyond our control and could materially adversely affect our business, results of operations, cash flows and financial condition.

At maturity, or in the event of an acceleration of payment obligations, we may be unable to pay our outstanding indebtedness with our cash and cash equivalents then on hand. In such event, we would be required to seek alternative sources of funding, which may not be available on commercially reasonable terms, terms as favorable as our current agreements, or at all. If we are unable to refinance our indebtedness or find alternative means of financing our operations, we may be required to take actions that are inconsistent with our current business practices or strategy.

Covenants in our senior secured notes and revolving credit facility could limit how we conduct our business, which could affect our long-term growth potential.

As of December 31, 2024, the principal balance of our Senior Secured Notes due 2027 (the "Senior Secured Notes") was $550.0 million. This loan agreement and one of our revolving credit facilities contain covenants limiting our ability to, among other things, make certain types of restricted payments, including paying dividends, incur debt or liens, merge or consolidate with others, dispose of assets, enter into certain transactions with affiliates, engage in certain business activities or make certain investments. In addition, one of our revolving credit facilities contains financial covenants, including requiring us, at the end of each calendar quarter in which the facility is drawn to a certain extent, to maintain a maximum total leverage ratio and to maintain a minimum aggregate amount of liquidity of $300.0 million. We have pledged our assets to secure the Senior Secured Notes and revolving credit facility with the exceptions of aircraft and aircraft engines, Sunseeker Resort and certain other exceptions. This will limit our ability to obtain debt secured by these pledged assets while these loans are outstanding.

These loan agreements contain various events of default (including failure to comply with the covenants under the loan agreements), and upon an event of default the lenders may, subject to various cure rights, require the immediate payment of all amounts outstanding under the these loans.

As a result of these restrictive covenants, we may be limited in how we conduct business, and we may be unable to raise additional debt or equity financing to operate during difficult times or to take advantage of new business opportunities.

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Any inability to obtain financing for aircraft under contract could harm our fleet growth plan.

We typically finance our aircraft through debt financing. As of February 1, 2025, we have committed financing for our nextfour Boeing 737 MAX deliveries and we have secured revolving lines of credit for up to $275.0 million to offset the risk that financing may not be available on acceptable terms when needed. While we believe debt financing will be available for the aircraft we will acquire, we cannot provide assurance that we will be able to secure such financing on terms attractive to us or at all. To the extent we cannot secure such financing on acceptable terms or at all, we may be required to modify our aircraft acquisition plans, incur higher than anticipated financing costs, or use more of our cash balances for aircraft acquisitions than we currently expect.

Our maintenance costs may increase as our fleet ages.

While we have introduced new Boeing 737 MAX aircraft to our fleet in late 2024, the average age of our Airbus aircraft as of February 1, 2025, is 16.0 years, which is older than the fleets of many other carriers. In general, the cost to maintain aircraft increases as they age, and exceeds the cost to maintain newer aircraft. FAA regulations, including aging aircraft airworthiness directives, require additional and enhanced maintenance inspections for older aircraft. These regulations can directly impact the frequency of inspections as an aircraft ages, and vary by aircraft or engine type, depending on the unique characteristics of each aircraft and/or engine.

In addition, we may be required to comply with any future law changes, regulations, or airworthiness directives. We cannot assure investors our maintenance costs will not exceed our expectations.

We rely on third parties to provide us with aircraft, facilities and services that are integral to our business.

We rely on Boeing and, as applicable, the owners of used aircraft with whom we may contract in the future to be able to deliver aircraft in accordance with the terms of executed agreements in a timely manner. Delivery schedules for newly built aircraft frequently slip which could delay deliveries to us. Our planned induction into service of aircraft under contract for delivery in the future could be adversely affected if Boeing or other third parties fail to perform as contractually obligated. See also Risk Factors - Regulatory review of Boeing’s operations could delay its production schedule, which could impact us as any delivery delays may result in lower profitability than expected and delayed growth as well as bad publicity and other consequences.

We have entered into agreements with third party contractors to provide certain facilities and services required for our operations, such as aircraft maintenance, ground handling, baggage services, and ticket counter space. Our reliance on others to provide essential services on our behalf gives us less control over costs and the efficiency, timeliness and quality of contract services.

As our aircraft age, we will need to rely further on outside MRO (maintenance, repair, overhaul) facilities to complete the necessary work. Currently, there is a concern about whether the capacity of the MRO’s we use is sufficient to handle all of our needed maintenance as well as their other business. If not, the cost of our maintenance events may increase and delays may occur in servicing our aircraft which could result in fewer aircraft available for our scheduled service.

We may not be able to maintain or grow our ancillary revenues.

Our business strategy includes expanding our ancillary products and services. We cannot assure investors that passengers will pay for additional ancillary products and services we offer in the future, or that they will continue to pay for the ancillary products and services we currently offer. Regulatory changes could also adversely affect our ancillary revenue opportunities. Failure to maintain our ancillary revenues could have a material adverse effect on our results of operations, financial condition and stock price. If we are unable to maintain and grow these revenues, we may be unable to execute our strategy to continue to offer low base fares in order to stimulate demand.

Our business could be harmed if we lose the services of key personnel.

Our business depends upon the efforts of our chief executive officer and president, Gregory Anderson, and a small number of executive management personnel. We do not currently maintain key-man life insurance on Mr. Anderson or any other executives. We may have difficulty replacing management or other key personnel who leave and, therefore, the loss of the services of any of these individuals could harm our business.

Our reputation and brand could be harmed if various stakeholders are not satisfied with our sustainability disclosures, goals and progress.

We operate in a public-facing industry dependent on fossil fuels to a large extent. Sustainability has become a more prominent focus for public companies and the SEC has proposed rules (now paused) and the State of California has adopted rules which will mandate GHG emissions reporting and climate risk assessment disclosures. Although we intend to comply with any legal requirements, our brand and reputation may suffer if our stakeholders are not satisfied with our sustainability disclosures, the goals we have set in that area or our progress toward meeting those goals.

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Failure to achieve our environmental, social and governance goals and public pressure from investors or policy groups' perception of the environmental impact of air travel could also adversely impact our reputation and brand. Our ability to meet our environmental goal depends on various actions from third parties outside of our control. These include policy changes from federal and state governments, significant capital investment from third parties and research and development from manufacturers and other stakeholders, all to support or incentivize pursuit of commercially viable sustainable fuel alternatives or new technologies to support the industry's achievement of its carbon abatement goals. Additionally, meeting our environmental goal will require the adoption of sustainable aviation fuels (SAF), the supply of which currently falls short of the aviation industry requirements and would likely be commercially viable only with the support and incentives from governmental initiatives.

Risks Associated with the Airline and Travel Industry

Our operating results could be affected by outbreaks of communicable diseases.

As has resulted from the COVID-19 pandemic, contagious illness and fear of contagion could have a material adverse impact on the airline industry. Any general reduction in airline passenger traffic as a result of an outbreak of disease or other travel advisories could dampen demand for our services even if not applicable to our markets. Resulting decreases in passenger volume would harm our load factors, could increase our cost per passenger and adversely affect our operating results.

The extent of impact of any future pandemic or contagion on our business and our financial and operational performance will depend on factors such as the duration, spread, severity and recurrences of the disease; the possible imposition of testing requirements before air travel; the duration and scope of any federal, state and local government restrictions; the availability and effectiveness of vaccines; the extent of the impact of the outbreak on overall demand for air travel; and our access to capital during the affected periods, all of which could be highly uncertain and cannot be predicted.

Future pandemics or contagions may cause public health officials to recommend precautions to mitigate the spread of the disease. During the COVID-19 pandemic, these resulted in federal, state and local authorities instituting measures such as imposing self-quarantine requirements, requiring testing before entry into certain states; issuing directives forcing businesses to temporarily close, restricting air travel and issuing shelter-in-place and similar orders limiting the movement of individuals. To the extent in effect to address communicable diseases in the future, such measures could depress demand for air travel, disrupt our operations, and materially adversely affect our business.

Moreover, the ability to attract and retain passengers depends, in part, upon the perception and reputation of our Company and the public’s concerns regarding the health and safety of air travel generally. Actual or perceived risk of infection could have a material adverse effect on the public's comfort with air travel, in general or on our flights, which could harm our reputation and business.

The airline industry is highly competitive and future competition in our under-served markets could harm our business.

The airline industry is highly competitive. The under-served cities we serve on a scheduled basis have traditionally attracted considerably less attention from our potential competitors than larger markets, and in most of our small city markets, we are the only provider of nonstop service to our leisure destinations. If other airlines or new airline start-ups begin to provide nonstop services to and from these or similar markets, or otherwise target these or similar markets, the increase in the amount of direct or indirect competition could cause us to reconsider service to affected markets, could impact our margins or could impact our future planned service.

A future act of terrorism, the threat of such acts, or escalation of U.S. military involvement overseas could adversely affect our industry.

Even if not directed at the airline industry, a future act of terrorism, the threat of such acts, or escalation of U.S. military involvement overseas could have an adverse effect on the airline industry. In the event of a terrorist attack, the industry would likely experience significantly reduced demand for travel services. These actions, or consequences resulting from these actions, would likely harm our business and the airline and travel industry. If we are called on to provide aircraft in the event of national emergencies as a result of our participation in the CRAF program, our operations would be disrupted.

Changes in government laws and regulations imposing additional requirements and restrictions on our operations could increase our operating costs.

Airlines are subject to extensive regulatory and legal compliance requirements, both domestically and internationally, that involve significant costs. In the last several years, the FAA has issued a number of directives and other regulations relating to the maintenance and operation of aircraft that have required us to incur significant expenditures. FAA requirements cover, among other things, retirement of older aircraft, fleet integration of newer aircraft, safety management systems, collision avoidance systems, airborne windshear avoidance systems, noise abatement, aircraft weight and payload limits, assumed average passenger weight, employee drug and alcohol testing, pilot training and certification, pilot and flight attendant duty time limitations, and increased inspection and maintenance procedures to be conducted on aging aircraft. The future cost of

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complying with these and other laws, rules and regulations, including new federal legislative and DOT regulatory requirements in the consumer-protection area, cannot be predicted and could significantly increase our costs of doing business.

Over the past 15 years the DOT has adopted revisions and expansions to a variety of its consumer protection regulations and policies. Additional expanded regulations proposed by DOT took effect in 2024 and January 2025 as did new consumer protection legislation passed by Congress. These new consumer protection rules and legislation have imposed additional costs on our business by requiring the development of new technological and operational systems. While we do not currently anticipate significant new consumer protection rules or legislation during the current Presidential administration and Congress, we are subject to fines or other enforcement actions if the DOT believes we are not in compliance with current regulations or with the federal consumer protection laws administered by the DOT. Even if our actions or practices are found to be compliant, we could incur substantial costs defending our actions or practices.

Federal funding to airports and/or airport bond financing could be affected through future deficit reduction legislation, which could result in higher fees, rates, and charges at many of the airports we serve. Additionally, from time to time legislative proposals have been made to re-regulate the airline industry in varying degrees - for example, to specify minimum seat-size and legroom requirements - which if adopted could affect our costs materially. While we do not anticipate such legislation from the current U.S Congress, a mandatory five-year validity of airline vouchers and credits, and substantially increased civil penalties for noncompliance by airlines with consumer-protection and other regulatory requirements became law in 2024.

We (i.e., our airline subsidiary) and VivaAerobus, a Mexican airline, submitted to DOT in December 2021 a joint application requesting approval of and antitrust immunity for a comprehensive alliance agreement applicable to all routes we and/or Viva may operate between points in the United States and points in Mexico. Over a period of 20 months, the DOT’s review and analysis progressed substantially, but on July 31, 2023, the DOT suspended processing of the joint application pending resolution of an aviation trade dispute between the governments of Mexico and the United States that arose earlier in 2023. The dispute remains unresolved and there is no assurance when or whether DOT will ultimately approve the agreement and grant antitrust immunity. While Mexican regulatory approval was issued in late 2022, that approval will require renewal (which is not assured) and both parties have stated they do not intend to proceed under the agreement in the absence of antitrust immunity issued by DOT. In addition, full performance under the agreement is contingent upon Mexico retaining Category 1 status under the FAA’s International Aviation Safety Assessment (“IASA”) program. The FAA found Mexico to be noncompliant from May 2021 until September 2023, when Mexico’s IASA Category 1 status was reinstated. An adverse outcome in one or more of these respects would likely thwart our plans to enter the U.S.-Mexico market for a number of years, despite the significant effort and expense we have incurred and continue to incur on the project.

At the current time, it appears unlikely that the current Presidential administration and U.S Congress will continue the prior legislative and regulatory concern with the environmental impacts of the air transportation industry. However, such concerns may again increase at some point in the future, in which case, the longer-term effects on our fleet and operating costs could be substantial. In the past, legislation to address climate change issues as they relate to the transportation industry has been introduced in the U.S. Congress, including a proposal to require transportation fuel producers and importers to acquire market-based allowances to offset the emissions resulting from combustion of their fuels. Similarly, the U.S. Congress has passed legislation incentivizing the production of sustainable aviation fuel (also known as biofuel) and to assist the aviation industry in reducing emissions. According to a September 2021 White House announcement, civil aviation accounts for 11 percent of emissions by the U.S. transportation sector as a whole. The FAA has announced a U.S. aviation sector goal of net-zero greenhouse gas (“GHG”) emissions by 2050, consistent with the broader federal objective of achieving net-zero GHG emissions economy-wide by 2050. We cannot predict whether further legislation to implement these goals will pass the Congress or, if enacted into law, how it ultimately would apply to our operations or the airline industry.

In addition, the EPA concluded in 2016 that current and projected concentrations of GHG emitted by various aircraft, including all of the aircraft we and other carriers operate, threaten public health and welfare. This finding may be a precursor to increased EPA regulation of commercial aircraft emissions in the United States, as has taken effect for operations within the European Union under EU legislation. Binding international measures adopted under the auspices of the International Civil Aviation Organization (“ICAO”), a specialized agency of the United Nations, are scheduled to become effective over the next several years, with the pilot phase having begun in 2021. In January 2021 the EPA adopted regulations setting emissions standards equivalent to ICAO’s for newly-designed aircraft, with immediate effect, and for in-production aircraft, effective 2028. Similarly, in December 2022, the EPA adopted particulate matter emission standards and test procedures for newly-designed aircraft, with immediate effect, and for in-production aircraft, effective 2028. In February 2024, the FAA adopted regulations implementing these EPA requirements. These new EPA and FAA standards and procedures harmonize with ICAO requirements. The aircraft we currently operate are not affected by these standards, and those we have on order would be affected only if manufactured after December 31, 2027. In the future, there may be an increasing legislative and regulatory focus on aviation’s impacts on the environment. These developments and any additional legislation or regulations addressing climate change are likely to increase our costs of doing business in the future and the increases could be material.

With respect to aircraft weight and balance, consumer protection, climate change, taxation, and other matters affecting the airline industry, whether the source of new requirements is legislative or regulatory, increased costs will adversely affect our profitability if we are unable to pass the costs on to our customers or adjust our operations to offset the new costs.

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Existing and proposed state-specific labor laws could affect our ability to schedule and operate flights efficiently, and as a result could increase our operating costs and liability exposure.

Various states and localities across the country are attempting to impose requirements, such as wage and hour requirements, meal and rest break and sick leave laws, on flight attendants and pilots (“flight crew”) who spend the vast majority of their working hours in the air and in various states and jurisdictions on a daily basis. These requirements would create significant operational challenges for air carriers by creating a patchwork of state and local laws which undermine the federal deregulation of the airline industry and, in theory, could require airlines to simultaneously comply with rules which conflict with those of other jurisdictions, federal regulations, and the provisions of labor agreements. Courts continue to remain divided on whether federal deregulation preempts these state laws and Congress has not addressed the issue. The impact on flight crew staffing, pay and scheduling technology may potentially increase our costs of doing business and could make certain routes cost prohibitive. Flight crews have filed class action lawsuits against air carriers in a number of states with varied results and, in many cases, the results have been appealed. Such suits are costly to defend and could result in sizeable liability exposure for any air carrier.

Airlines are often affected by factors beyond their control, including air traffic congestion, weather conditions, increased security measures, and a reduction in demand to any particular market, any of which could harm our operating results and financial condition.

Like other airlines, we are subject to delays caused by factors beyond our control, including air traffic congestion at airports and en route, air traffic controller staffing and limitations, adverse weather conditions, increased security measures, and the outbreak of disease. Delays frustrate passengers and increase costs, which in turn could affect profitability. During periods of fog, snow, rain, storms or other adverse weather conditions, flights may be canceled or significantly delayed and travel to certain markets could be impacted during and for a period of time after the weather event. Cancellations or delays due to weather conditions, traffic control problems, and breaches in security could harm our operating results and financial condition.

A substantial proportion of our scheduled flights have Las Vegas, Orlando, Phoenix/Mesa, Tampa/St. Petersburg, Punta Gorda, Destin or Sarasota as either their destination or origin. Our business could be harmed by any circumstances causing a reduction in demand for air transportation to one or more of these markets, or our other leisure destinations, such as adverse changes in local economic conditions, negative public perception of the city, significant price increases, or the impact of future terrorist attacks or natural disasters.

Risks Related to Our Stock Price

The market price of our common stock may be volatile, which could cause the value of an investment in our stock to decline.

The market price of our common stock may fluctuate substantially due to a variety of factors, many of which are beyond our control, including:

•the impact of pandemics and other communicable diseases on air travel and any related government restrictions impacting air travel

•fuel price volatility, and the effect of economic and geopolitical factors and worldwide oil supply and consumption on fuel availability

•labor costs or work actions

•announcements and developments concerning our competitors, new market entrants, the airline industry, or the economy in general

•strategic actions by us or our competitors, such as acquisitions or restructurings

•media reports and publications about the safety of our aircraft or the aircraft types we operate

•airline accidents

•new regulatory pronouncements and changes in regulatory guidelines

•announcements concerning our business strategy

•our ability to grow service in the future as rapidly as the market anticipates

•general and industry-specific economic conditions

•changes in financial estimates or recommendations by securities analysts

•substantial sales of our common stock or other actions by investors with significant shareholdings

•additional issuances of our common stock

•general market conditions

The stock markets in general have experienced substantial volatility that has often been unrelated to the operating performance of particular companies. These types of broad market fluctuations may adversely affect the trading price of our common stock.

In the past, stockholders have sometimes instituted securities class action litigation against companies following periods of volatility in the market price of their securities. Although we have insurance to cover these claims up to policy limits, these lawsuits or similar litigation could result in substantial costs, divert management’s attention and resources, and harm our business or results of operations.

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Other companies may be deterred from attempting to acquire us or our stock, even at prices in excess of current market prices, due to the effects of Nevada statutes.

We are subject to a Nevada statute (NRS 78.411 through 78.444) that prohibits us from engaging in certain “combinations,” including mergers, consolidations, sales and leases of assets, issuances of securities and similar transactions, with a stockholder who is the beneficial owner of 10 percent or more of our stock (an “interested stockholder”), for a period of up to four years after the date that person became an interested stockholder, unless either our board of directors approves, in advance, the transaction by which the person became an interested stockholder, or such combination is approved at a meeting by at least 60 percent of voting power of our stock that is not beneficially owned by the interested stockholder or its affiliates. Between two and four years after the date the person first became an interested stockholder, a combination may also be prohibited unless approved by our board of directors and stockholders holding at least a majority of the stock not owned by the interested stockholder and its affiliates or unless the interested stockholder satisfies certain requirements with respect to the aggregate consideration to be received by holders of outstanding shares in the combination.

In addition, another Nevada statute (NRS 78.378 through 78.3793) may eliminate the voting rights of shares of our stock to the extent the shares are acquired by a holder in connection with, or within 90 days prior to, an acquisition of a “controlling interest” that causes such holder to exceed certain thresholds (one-fifth, one-third and a majority or more) of the total voting power of our stock. In such event, the holder will only obtain such voting rights in the “control shares” so acquired as may be approved by stockholders owning at least a majority of the stock of the Company (excluding stock held by the interested stockholder). The statute also provides a mechanism for us to force the redemption of the control shares at the average price paid therefor. Our board of directors may, however, exempt any acquisition of a controlling interest by certain existing or future stockholders by amending the corporation’s bylaws (or articles of incorporation) within 10 days following such acquisition.

These Nevada statutes could discourage or make more difficult a takeover attempt that certain stockholders may consider in their best interests. These provisions may also adversely affect prevailing market prices for our common stock. We have not opted out of either of these statutes.

Our corporate charter and bylaws include provisions limiting voting by non-U.S. citizens.

To comply with restrictions imposed by federal law on foreign ownership of U.S. airlines, our articles of incorporation and bylaws restrict voting of shares of our capital stock by non-U.S. citizens. The restrictions imposed by federal law currently require no more than 25 percent of our stock be voted, directly or indirectly, by persons who are not U.S. citizens, and that our president and at least two-thirds of the members of our board of directors be U.S. citizens. Our bylaws provide no shares of our capital stock may be voted by or at the direction of non-U.S. citizens unless such shares are registered on a separate stock record, which we refer to as the foreign stock record. Our bylaws further provide no shares of our capital stock will be registered on the foreign stock record if the amount so registered would exceed the foreign ownership restrictions imposed by federal law. Registration on the foreign stock record is made in chronological order based on the date we receive a written request for registration. Non-U.S. citizens will be able to own and vote shares of our common stock only if the combined ownership by all non-U.S. citizens does not violate these requirements.

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Item 1B. Unresolved Staff Comments

None.

Item 1C. Cybersecurity

As a critical infrastructure company, we regularly face cybersecurity threats from malicious third parties that could obtain unauthorized access to our internal systems, networks and data. It is virtually impossible for us to entirely mitigate the risk of these and other security threats we face. The security, performance, and reliability of our network may in the future be disrupted by third parties, including nation-states, competitors, hackers, disgruntled employees, former employees, or contractors. While we have implemented security measures internally and have integrated security measures into our systems, network, and products, these measures have not always functioned as expected and have not always detected or prevented all unauthorized activity, prevented all security breaches or incidents, mitigated all security breaches or incidents, or protected against all attacks or incidents.

We have implemented processes and procedures for the assessment, identification, and management of material risks from cybersecurity threats. These processes implement both qualitative and quantitative measurements that have been agreed upon with our third-party consultants, our auditors, and integrated into our overall risk management process.

Our process includes assessing, mitigating, and managing risk in three categories: cybersecurity or technical risk, vendor risk, and compliance and regulatory risk. To support those risk management categories, we partner with third parties in the implementation of tooling to help us decrease cyber risks and ensure compliance within Allegiant and with third parties. We verify third-party compliance, such as suppliers and business partners, by aligning with several standards. For example, we subject our IT suppliers to the Sarbanes-Oxley ("SOX") and payment card industry ("PCI") compliance standards where applicable.

As a publicly traded company and given the industry in which we operate, we have established a risk-based strategy informed by numerous cybersecurity frameworks from regulatory bodies such as PCI, SOX, FAA, TSA, DOT, NIST and DoD. We use the National Institute of Standards and Technology Cybersecurity Framework ("NIST CSF") as a guide to help us identify, assess, and manage cybersecurity risks relevant to our business. This does not imply that we meet all of the technical standards, specifications or requirements under any of these frameworks. Achieving compliance with any cybersecurity standard does not guarantee that controls cannot be broken, bypassed, or circumvented by zero-day vulnerabilities, or malicious threat actors.

Our overall approach to cybersecurity risk management includes the following key elements:

•Multi-layered defenses, coupled with in-depth and continuous monitoring – We utilize data analytics to detect anomalies and search for cybersecurity threats. From time to time, we engage third party consultants or other advisors to assist in assessing, identifying and managing cybersecurity threats. We also periodically use our internal audit function to conduct additional assessments and reviews.

•Insider Threats – We maintain an insider threat program, designed to identify, assess, and address potential risks from within Allegiant. Our program evaluates potential risks consistent with industry best practices, customer requirements and applicable law, including privacy and other considerations.

•Information Sharing and Collaboration – We work with government, customer, industry and supplier partners including government-industry partnerships and critical infrastructure threat intelligence sharing platforms. These relationships enable the rapid sharing of threat intelligence and vulnerability mitigation across the industry and the defense industrial base and supply chain.

•Third Party Risk Assessments – We conduct information security assessments before sharing or allowing the hosting of sensitive information in our computing environments, and those managed by third parties. Our standard terms and conditions with third parties include contractual provisions requiring certain security protections.

•Training and Awareness – We seek to create a culture of security. We provide training to our employees to help identify, avoid, and mitigate cybersecurity threats. Our employees are required to participate in cybersecurity training at least annually and our training includes spear phishing and other awareness training. We regularly remind our employees and partners of the importance of handling and protecting customer and employee data, including through annual privacy and security training. We also host periodic tabletop exercises and drills with management and other employees to practice rapid response to cyber incidents.

•Supplier Engagement – We require our suppliers to comply with our standard information security terms and conditions and require them to complete information security questionnaires to enable us to review and assess any potential cyber-related risks depending on the nature of the services provided.

•Scalability – We continue to invest directly in our cybersecurity program, as well as augmentation of those cybersecurity services through managed services and third parties, depending on the maturity and risk of the operating model of the business unit.

Disclosure of Identified Risks:

As of the date of this report, we have not identified any cybersecurity threats that have materially affected or are reasonably anticipated to have a material effect on the organization. Although we have not experienced cybersecurity incidents that are individually, or in the aggregate, material, we have experienced cyberattacks in the past, which we believe have thus far been largely mitigated by preventative, detective and responsive measures implemented by us. For a detailed discussion of our cybersecurity related risks, see Item 1A Risk Factors – “A breach in the security of personal information, breach in credit card data or system disruptions caused by security breaches or cyberattacks – including attacks on those parties we do business with

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– could harm our ability to conduct our operations and could have a material adverse effect on our financial position or results of operations.”

Board Oversight of Cybersecurity Risks:

Our board is responsible for overseeing our enterprise risk management activities in general, the appropriate committees assist the board in the role of risk oversight. Our chief information security officer (CISO) presents a quarterly update to the full board, including an update on our risk management process and risk trends related to cybersecurity.

Management’s role in Managing Cybersecurity Risks:

We have a dedicated cybersecurity team, composed of individuals with a diverse set of information security, cybersecurity, and governance, risk and compliance backgrounds, collectively giving our cybersecurity program significant experience. Our CISO leads our day-to-day data security and customer privacy efforts — overseeing operations, cybersecurity, privacy risk and compliance. The CISO, who has more than 30 years of experience reports regularly to our chief executive officer (CEO), monthly to the risk and compliance committee (consisting of executive leadership) and quarterly to our board.

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Item 2. Properties

Aircraft

The following table summarizes our total in-service aircraft as of December 31, 2024:

Total aircraft 125

Ground Facilities

We lease facilities at the majority of our leisure destinations and several other airports we serve. Our leases for terminal passenger service facilities (which include ticket counter and gate space, and operations support areas) generally have a term ranging from month-to-month to several years, and may typically be terminated with a 30 to 90 day notice. We have also entered into use agreements at each of the airports we serve which provide for non-exclusive use of runways, taxiways, and other facilities. Landing fees under these agreements are based on the number of landings and weight of the aircraft.

The following details the airport locations we utilize as operational bases as of February 1, 2025:

Airport Location

Appleton International Airport Appleton, Wisconsin

Asheville Regional Airport Fletcher, North Carolina

Bellingham International Airport Bellingham, Washington

Cincinnati/Northern Kentucky International Airport Hebron, Kentucky

Des Moines International Airport Des Moines, Iowa

Destin-Fort Walton Beach Airport Destin, Florida

Flint Bishop International Airport Flint, Michigan

Ft. Lauderdale-Hollywood International Airport Ft. Lauderdale, Florida

Gerald R. Ford International Airport Grand Rapids, Michigan

Harry Reid International Airport Las Vegas, Nevada

Indianapolis International Airport Indianapolis, Indiana

Lehigh Valley International Airport Allentown, Pennsylvania

Los Angeles International Airport Los Angeles, California

McGhee Tyson Airport Knoxville, Tennessee

Mesa Gateway Airport Mesa, Arizona

Nashville International Airport Nashville, Tennessee

Orlando Sanford International Airport Sanford, Florida

Pittsburgh International Airport Pittsburgh, Pennsylvania

Provo Airport Provo, Utah

Punta Gorda Airport Punta Gorda, Florida

Sarasota Bradenton International Airport Sarasota, Florida

Savannah/Hilton Head International Airport Savannah, Georgia

St. Petersburg-Clearwater International Airport St. Petersburg, Florida

We believe we have sufficient access to gate space for current and near-term operations at all airports we serve.

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We use leased facilities at our operational bases to perform line maintenance, overnight parking of aircraft, storage of parts and supplies, and other operations' support. We lease additional space in cargo areas at Harry Reid International Airport (Las Vegas), Nashville International Airport, Orlando Sanford International Airport, Mesa Gateway Airport, Punta Gorda Airport, Sarasota Bradenton International Airport, Savannah/Hilton Head International Airport, Cincinnati/Northern Kentucky International Airport, and St. Petersburg-Clearwater International Airport for our primary line maintenance operations. We also lease or own warehouse space in Las Vegas, Orlando Sanford, St. Petersburg-Clearwater, Punta Gorda, and Mesa for aircraft spare parts and supplies.

Our primary corporate offices are located in Las Vegas, where we own approximately 11 acres of property containing approximately 211,000 square feet of office space.

We also lease and/or own other facilities in Las Vegas and Florida, with approximately 350,000 square feet of space used for training and other corporate purposes. These leases expire between 2025 and 2048.

Sunseeker Resort

We own approximately 28 acres on the harbor in Port Charlotte, Florida where Sunseeker Resort - Charlotte Harbor is located which includes additional property available for related purposes and for possible future expansion. We also own an office building in Lake Suzy, Florida for Sunseeker administration. Additionally, we own a golf course (Aileron Golf Course) consisting of 156 acres in Lake Suzy, Florida, which serves as an amenity to the Resort.

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Item 3. Legal Proceedings

We are subject to certain legal and administrative actions we consider routine to our business activities. We believe the ultimate outcome of any pending legal or administrative matters will not have a material adverse effect on our financial position, liquidity, or results of operations.

Item 4. Mine Safety Disclosures

Not applicable.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities

Market for our common stock

Our common stock is quoted on the Nasdaq Global Select Market (symbol: ALGT). On February 14, 2025, the last sale price of our common stock was $83.26 per share. The following table sets forth the range of high and low sale prices for our common stock for the periods indicated.

Period High Low

As of February 18, 2025, there were approximately 180 holders of record of our common stock. Because many of our shares are held by brokers and other institutions on behalf of shareholders, we are unable to estimate the total number of beneficial holders.

Securities Authorized for Issuance under Equity Compensation Plans

The following table provides information regarding options, warrants and other rights to acquire equity securities under our equity compensation plans as of December 31, 2024:

Equity compensation plans approved by security holders(1) — N/A 347,928

(1)There are no securities to be issued under any equity compensation plans not approved by our security holders.

(2)The shares shown as available for future issuance under equity compensation plans exclude 362,378 shares of unvested restricted stock awards as all restricted stock awards are deemed to have been issued.

(3)Our 2022 Long-Term Incentive Plan applies a fungible ratio such that a full-value award, such as a restricted stock grant or restricted stock unit grant, will be counted at two times its number for purposes of the plan limit. As a result, a maximum of 173,964 shares of restricted stock are remaining for future issuance under the 2022 Long-Term Incentive Plan.

Dividend Policy

We paid a quarterly dividend from 2015 through first quarter 2020 when we suspended all cash dividends upon the onset of the pandemic. In addition, in connection with the Payroll Support Program Agreements we entered into with the U.S. Department of Treasury, repurchases of common stock and the payment of cash dividends were prohibited through September 30, 2022.

In 2023, we recommenced the payment of cash dividends. Our board established the annual dividend rate at $2.40 per share and dividends of $0.60 per share per quarter were declared, and paid, in the third and fourth quarters, bringing total regular cash dividends declared, and paid, in 2023 to $1.20 per share.

In 2024, the quarterly dividend of $0.60 per share was paid during the first and second quarters, until the dividend was suspended on July 8, 2024, for an indefinite period of time, bringing the total regular cash dividends declared, and paid, in 2024 to $1.20 per share.

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Certain of our credit agreements limit the amount of dividends we may pay. The most restrictive agreement provides that absent an event of default, regularly scheduled dividends in any four-quarter period may be paid up to the lesser of $75.0 million or 20 percent of our consolidated EBITDA (as defined in the agreement) for the previous four-quarter period. Absent an event of default, this restriction would not constrain the continued payment of a quarterly dividend at the levels paid in 2023 and 2024.

Our Repurchases of Equity Securities

The following table reflects repurchases of our common stock during the fourth quarter of 2024:

(1)Represents shares repurchased from employees who vested a portion of their restricted stock grants. These share repurchases were made at the election of each employee pursuant to an offer to repurchase by us. In each case, the shares repurchased constituted a portion of vested shares necessary to satisfy income tax withholding requirements.

(2)Represents the remaining dollar amount of open market purchases of our common stock which has been authorized by our board under a share repurchase program.

Stock Price Performance Graph

The following graph compares the cumulative total shareholder return on our common stock with the cumulative total return on the Nasdaq Composite Index and the NYSE ARCA Airline Index since December 31, 2019. The graph assumes that the value of the investment in our common stock and each index was $100 on December 31, 2019 and that all dividends are reinvested. Stock price performance for the historical periods presented is not necessarily indicative of future results.

The stock price performance graph shall not be deemed incorporated by reference by any general statement incorporating by reference this annual report on Form 10-K into any filing under the Securities Act of 1933 or under the Securities Exchange Act of

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1934, except to the extent that we specifically incorporate this information by reference, and shall not otherwise be deemed filed under such Acts.

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Item 6. (Reserved)

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis presents factors that had a material effect on our results of operations during the years ended December 31, 2024 and 2023. Unless otherwise expressly stated, for discussion and analysis of 2023 and a comparison of our 2023 results to 2022 results, please refer to our Annual Report on Form 10-K for the year ended December 31, 2023, under Part II Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations. Also discussed is our financial position as of December 31, 2024 and 2023. Investors should read this discussion in conjunction with our consolidated financial statements, including the notes thereto, appearing elsewhere in this annual report. This discussion and analysis contains forward-looking statements. Please refer to the section entitled “Disclosure Regarding Forward-Looking Statements” at the beginning of this annual report on Form 10-K for a discussion of the uncertainties, risks and assumptions associated with these statements.

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2024 Highlights

•Took delivery of our first four newly manufactured Boeing 737 MAX aircraft and inducted them into service with promising early performance

•Total operating revenue of $2.5 billion, up 0.1 percent year-over-year

•Record total average ancillary fare of $75.83 per passenger, up 4.0 percent from 2023

•Average third party products fare was $8.48 per passenger, up 29.1 percent year-over-year

•Restored utilization to near 2019 levels during the peak December 2024 holiday period

•Ancillary revenue increased as a result of progress on commercial initiatives such as Allegiant Extra, third party travel insurance and restoration of a third bundle of ancillary products

•Recorded $80.7 million in fixed fee revenue, up 17.7 percent compared to the prior year's Company record breaking high

•$134.7 million in total co-brand credit card remuneration, up 12.7 percent from the prior year

•As of December 31, 2024, we had approximately 545,000 total Allegiant Allways Rewards Visa cardholders

•Ended 2024 with approximately 18 million total active Allways Rewards members

•In April 2024, ratified a new five-year agreement with the Transport Workers Union of America, AFL-CIO Local 577, representing Allegiant's flight attendants

◦Agreement includes wage increases, certain quality-of-life improvements and a ratification bonus

•Published the 2023 Sustainability Report reaffirming the Company's sustainability goals

•Ranked third on the American Customer Satisfaction Index for Airlines, moving up from seventh in 2023

•Named best low-cost carrier in North America by Skytrax, the international air transport rating organization

•Named the number one Best Airline Credit Card for the sixth consecutive year and Best Frequent Flyer program in USA TODAY's 10Best 2024 Readers' Choice Awards

•Ranked number 4 among major US carriers in the Wall Street Journal's "The Best and Worst Airlines of 2024"

•Announced 44 new nonstop routes during the fourth quarter, tying the record for the largest expansion in Company history, including three new cities, of which 39 routes had no prior nonstop service

•Gregory Anderson assumed the role of chief executive officer and president in September 2024

•Completed our first full year of operations of Sunseeker Resort and engaged experienced hospitality advisors to pursue strategic alternatives with potential partners

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AIRCRAFT

Operating Fleet

The following table sets forth the number and type of aircraft in service and operated by us as of the dates indicated. All of the aircraft in our fleet as of December 31, 2024 are owned by us except as indicated in the footnotes to the table:

As of December 31,

(1)Does not include one aircraft of which we have taken delivery as of December 31, 2023 and which was not in service as of that date.

(2)Includes 23 aircraft under finance lease and 13 aircraft under operating lease as of December 31, 2024 and December 31, 2023, and 20 aircraft under finance lease and 13 aircraft under operating lease as of December 31, 2022.

(3)Includes four aircraft under operating lease as of December 31, 2024, December 31, 2023, and December 31, 2022.

As of December 31, 2024, we are party to forward purchase agreements for 46 aircraft with nine deliveries expected in 2025, approximately 14in 2026 and the remainder in 2027. The timing of these deliveries is based on management's best estimates and differs from the contract in place. Refer to Part I - Item 2. Properties for further detail regarding our aircraft fleet.

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NETWORK

We manage capacity and route expansion through optimization of our flight schedule to, among other things, better match demand in certain markets. We continually adjust our network through the addition of new markets and routes, adjusting the frequencies into existing markets, and exiting under-performing markets, as we seek to achieve and maintain profitability on each route we serve.

We paused network growth in 2023 and 2024 due to flight crew constraints and aircraft delivery delays among other factors. We aim to achieve meaningful growth with greater utilization of our fleet. In November 2024, we announced 44 new routes and three new cities beginning in 2025 as we begin to pursue network growth in 2025 and after.

As of February 1, 2025, and including service announcements through that date, we were selling seats on 577 routes serving 122 cities in 42 states.

The following table shows the number of leisure destinations and cities served as of the dates indicated (includes cities served seasonally):

As of December 31,

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TRENDS

Aircraft Fuel

The cost of fuel is volatile, as it is subject to many economic and geopolitical factors we can neither control nor predict. Significant increases in fuel costs could materially affect our operating results and profitability. We have not sought to use financial derivative products to hedge our exposure to fuel price volatility, nor do we have any plans to do so in the future.

Increasing Utilization

We are in the midst of an initiative to increase aircraft utilization back to 2019 levels by adding service to our schedule in our most profitable peak periods. By way of example, our aircraft utilization rate was 9.8 hours per aircraft per day in July 2019 compared to 7.7 hours per aircraft per day in July 2024. During the December 2024 holiday period, we matched our daily utilization from the corresponding period in 2019 and expect to continue the momentum to achieve this goal during our busiest periods of March, June and July 2025. However, this effort is subject to various risks, some of which may not be under our control.

Boeing Agreement

We have signed an agreement and amendments with Boeing to purchase 50 newly manufactured 737 MAX aircraft with options to purchase up to an additional 80 737 MAX aircraft. We took delivery of four MAX aircraft in 2024, with the aircraft entering revenue service before the end of the year. We believe this new aircraft purchase is complementary with our low-cost strategy based on our intent to retain ownership of the aircraft, the longer useful life for depreciation purposes, and expected fuel savings and operational reliability from the use of these new aircraft.

In the interest of increased quality control at Boeing and its suppliers, the FAA has indicated aircraft production rates will be capped until they are satisfied with Boeing's quality practices. These factors, other delays in Boeing obtaining needed regulatory approvals, and other factors impacting Boeing could delay deliveries to us even further than management's current expectations. Although the contract provides for more deliveries, at this time, we currently expect nine aircraft to be delivered to us in 2025. Further delays in aircraft deliveries will impact our ability to schedule additional growth in late 2025 and beyond.

New Reservation System

During 2023, we converted to the Navitaire reservation system to replace our legacy home-grown system. While we expect incremental passenger revenue once this system is fully implemented, we suffered some per passenger air ancillary revenue degradation (in the area of bundled ancillary products in particular) as certain functionality was unavailable during the transition. We restored functionality around our third bundled product offering in late 2024 and will continue to devote resources to the transition issues. We currently expect to regain all the lost per passenger revenue and begin to achieve some of the expected incremental per passenger revenue in 2026.

Union Negotiations

The collective bargaining agreement with our pilots has been amendable since 2021. We and the International Brotherhood of Teamsters jointly requested the mediation services of the National Mediation Board in January 2023 to assist with the negotiations. The mediation process with the NMB is continuing.

Separately from the ongoing collective bargaining agreement negotiations, to address retention and pilot pay issues and increase pilot staffing levels, effective in May 2023, we began accruing a retention bonus, with IBT's agreement, for pilots who continue employment with us until a new labor agreement is approved. The amount being accrued is 35 percent of current hourly pay rates, except for our first year first officers for whom the percentage is 82 percent, in each case, calculated at a minimum of 85 pay credit hours per month. Our implementation of the retention bonus has allowed us to effectively increase pay rates for our pilot team members (by way of the accrual of the retention bonus), add pilots through hiring and significantly slow attrition.

For the year ended December 31, 2024, we recorded estimated pilot retention bonus accruals of $91.5 million bringing the total accrual to $146.1 million at year end, including the related payroll taxes. The bonus will be paid to all pilots remaining employed with us after ratification of a new collective bargaining agreement.

Network Expansion

We have identified more than 1,400 incremental routes as opportunities for future network growth, with approximately 77 percent of these additional routes having no current nonstop service. Our ability to add significant numbers of new routes has been constrained in recent years by flight crew staffing, high fuel costs, economic conditions and other factors. During 2025 and future periods, we expect to add meaningful capacity growth with greater utilization of our fleet (and, in particular, during peak demand periods) and with projected growth of the fleet after 2025.

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Sunseeker Resort

Sunseeker Resort at Charlotte Harbor opened in December 2023. As with many new hotels or resorts, Sunseeker's booking and occupancy rates are lower than more established properties. In addition, occupancy during 2024 was compromised by three major hurricanes impacting the area in summer and fall 2024. Sunseeker incurred significant operating losses in its first year of operations in 2024. Although we are seeing improvement in recent months, we expect losses to continue in 2025. Our customer reviews continue to be positive and we hope to build on that favorable customer sentiment to achieve better financial performance of the Resort in the future. We have hired experienced advisors to begin a process to seek a capital partner to purchase the Resort or an interest in the Resort. In the meantime, we have engaged experienced hospitality advisors to identify areas for improvement in an effort to optimize the value of this asset and evaluate strategic alternatives with potential partners. These efforts are subject to many uncertainties and may not be successful.

VivaAerobus Alliance

In December 2021, we announced plans for a fully-integrated commercial alliance agreement with VivaAerobus, designed to expand options for nonstop leisure air travel between our markets in the United States and Mexico. We and VivaAerobus submitted a joint application to the DOT requesting approval of, and antitrust immunity for, the alliance. The DOT's review of our application is currently suspended pending the outcome of diplomatic engagement on broader treaty issues and, as a result, the timing of commencement of this service is uncertain as it will depend on when or if the DOT will ultimately approve the grant of antitrust immunity.

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Our Operating Expenses

A brief description of the items included in our operating expense line items follows.

Salaries and benefits expense includes wages, salaries, employee bonuses and pilot retention bonus accruals, as well as expenses associated with employee benefit plans, stock compensation expense related to equity grants, and employer payroll taxes. The CARES Act employee retention tax credit was recorded as an offset to salaries and benefits expense in 2022.

Aircraft fuel expense includes the cost of aircraft fuel, fuel taxes, into plane fees and airport fuel flowage, storage or through-put fees.

Station operations expense includes the fees charged by airports for the use or lease of airport facilities and fees charged by third party vendors for ground handling services, commissary expenses, and other related services. Station operations expense also includes most of our irregular operations costs.

Depreciation and amortization expense includes the depreciation of all owned fixed assets, including aircraft and engines, Sunseeker Resort assets, and assets recorded in connection with finance leases. Also included is the amortization of heavy maintenance expenses on our aircraft and engines, which are capitalized under the deferral method of accounting and amortized as a component of depreciation and amortization expense over the estimated period until the next scheduled major maintenance event.

Maintenance and repairs expense includes all parts, materials and spares required to maintain our aircraft. Also included are fees for repairs performed by third party vendors.

Sales and marketing expense includes all advertising, promotional expenses, sponsorships, travel agent commissions, debit and credit card processing fees associated with the sale of scheduled service and air-related ancillary charges, costs related to advertising and marketing for Sunseeker Resort, and credit card processing fees for Resort bookings.

Aircraft lease rentals expense consists of the cost of leasing aircraft under operating leases with third parties as well as the cost for sub-service which may be utilized in order to accommodate passengers in the event of operational disruption.

Other expense includes travel and training expenses for crews and ground personnel, facility lease expenses, professional fees, personal property taxes, information technology consulting, other expenses for Sunseeker Resort, the cost of passenger liability insurance, aircraft hull insurance and all other insurance policies, excluding employee welfare insurance. Additionally, this expense includes gain and loss on disposals of aircraft and other equipment, and all other administrative and operational overhead expenses not included in other line items above.

Special charges include charges taken in 2024 for a bonus paid to flight attendants upon ratification of a new collective bargaining agreement, costs related to an organizational restructuring of certain administrative personnel, and an impairment charge taken on Sunseeker Resort and the related Aileron Golf Course. Other special charges in 2024, 2023, and 2022 relate to accelerated retirements of 21 airframes for early retirement to coincide with planned 737 MAX aircraft deliveries and losses incurred by Sunseeker from the impact of hurricanes and other weather related events, net of insurance recoveries.

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RESULTS OF OPERATIONS

2024 compared to 2023

Operating Revenue

Year Ended December 31, Percent Change

Operating Revenues (in thousands) 2024 2023 YoY

NM - not meaningful

Passenger revenue. Passenger revenue decreased 4.6 percent in 2024 compared to 2023 related to a 2.2 percent decrease in scheduled service passengers on a slight increase in capacity and a 6.3 percent decrease in scheduled service base fares which more than offset a 1.5 percent increase in air-related ancillary revenue per passenger.

Third party products revenue. Third party products revenue increased $29.5 million, or 26.2 percent, in 2024 compared to 2023. The increase was driven by a $21.1 million increase in marketing revenue from our co-brand credit card and $10.1 million from a travel insurance offering introduced during 2024, partially offset by declines in revenues from sales of hotel rooms and rental cars.

Fixed fee contract revenue. Fixed fee contract revenue increased 17.7 percent in 2024 compared to 2023 as the result of an 18.3 percent increase in fixed fee departures. Increased fixed fee flying was primarily driven by military charters, which increased by 34.4 percent compared to the prior year.

Resort and other revenue. Resort and other revenue increased $68.4 million in 2024 compared to 2023, primarily as the result of the opening of Sunseeker Resort in December 2023. Resort revenue was $71.8 million in 2024 compared to $2.9 million in 2023.

Operating Expenses

The following table presents airline only operating unit costs on a per ASM basis, defined as Operating CASM, for the indicated periods. Excluding fuel on a per ASM basis provides management and investors the ability to measure and monitor our cost performance absent fuel price volatility. Both the cost and availability of fuel are subject to many economic and political factors beyond our control. Excluding special charges allows management and investors to better compare our airline unit costs with those of other airlines.

Year Ended December 31, Percent Change

Airline Unitized Costs (in cents) 2024 2023 YoY

Depreciation and amortization 1.22 1.18 3.4

Maintenance and repairs 0.66 0.66 —

Airline operating CASM, excluding fuel 8.80 ¢ 8.31 ¢ 5.9

Airline operating CASM, excluding fuel and special charges 8.56 ¢ 8.12 ¢ 5.4

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Airline operating CASM, excluding fuel and airline special charges. Airline operating CASM, excluding fuel and airline special charges, increased by 5.4 percent to 8.56 ¢ for 2024 compared to 8.12 ¢ in 2023. The CASM-ex increase is primarily attributable to a 13.4 percent increase in airline salaries and benefits expense on a per ASM basis (for the reasons described in the expense line item discussion below). This increase was on relatively flat capacity as during 2024 we continued to incur significant labor costs for pilots trained to fly our Boeing 737 MAX aircraft while the aircraft deliveries were delayed.

Aircraft fuel expense. Aircraft fuel expense decreased $68.1 million, or 9.8 percent, in 2024 compared to 2023. The decrease was primarily driven by a 10.7 percent decrease in average fuel cost per gallon, offset by a 1.0 percent increase in gallons consumed on a 1.1 percent increase in total system ASMs.

Salaries and benefits expense. Airline salaries and benefits expense increased $98.2 million, or 14.6 percent, in 2024 compared to 2023. During 2024, we continued to incur significant labor costs for pilots trained to fly our Boeing 737 MAX aircraft while the aircraft deliveries were delayed, which contributed to a 6.2 percent increase in airline full-time equivalent employees ("FTEs"). Other factors contributing to the increase included pilot retention bonuses that we began to accrue in May 2023, for which there was a full year of accrual in 2024 versus only eight months in 2023, and increases in crew pay including increased pay rates under a new collective bargaining agreement with our flight attendants.

Salaries and benefits expense at Sunseeker Resort increased by $33.8 million due to a full year of operations in 2024 compared to a partial year in 2023.

Station operations expense. Station operations expense increased $16.3 million, or 6.3 percent, in 2024 compared to 2023. This increase was primarily driven by a $6.2 million increase in building rent stemming primarily from base expansions and a $4.6 million increase in passenger compensation attributable in large part to the CrowdStrike outage in July 2024. Increases in airport and landing fees on a 0.9 percent increase in departures also contributed to the change.

Depreciation and amortization expense. Airline depreciation and amortization expense increased $10.9 million, or 4.9 percent, in 2024 compared to 2023 as the result of increases in deferred heavy maintenance amortization as well as increases in capitalized software amortization resulting from the airline's implementation of new enterprise resource planning ("ERP") systems including SAP, Navitaire, and Trax during 2023 and 2024.

Sunseeker Resort depreciation and amortization increased by $24.2 million in 2024 compared to 2023 as the result of only a partial year of expense in 2023 due to the Resort opening in December 2023.

Maintenance and repairs expense. Maintenance and repairs expense increased by $1.6 million or 1.3 percent in 2024 compared to 2023, which remained flat on a per ASM basis.

Sales and marketing expense. Airline sales and marketing expense decreased by $9.2 million or 8.5 percent in 2024 compared to 2023 primarily as the result of the discontinuation of a marketing agreement in 2024 and a fee incurred for transitioning our co-brand credit card to a new payment network in 2023 that was not present in 2024. Credit card processing fees also decreased in line with a 4.6 percent decrease in passenger revenue compared to 2023.

Sunseeker Resort sales and marketing expense increased by $908.0 thousand or 14.7 percent in 2024 compared to 2023 as the result of increased marketing efforts after the Resort's opening.

Other operating expense. Airline other operating expense decreased by $15.4 million or 13.1 percent in 2024 compared to 2023 as the result of gains on opportunistic sales of spare flight equipment, which decrease was partially offset by increases in software licenses, crew travel, and property taxes.

Sunseeker Resort other operating expense increased $32.3 million in 2024 compared to 2023 as the result of only a partial year of expense in 2023 due to the opening of the Resort in December 2023. The increase at the Resort includes $14.1 million related to insurance and property taxes and $8.3 million in food and beverage cost of sales, with other general and administrative expenses driving the remaining change.

Special charges. Airline special charges were $45.3 million in 2024 compared to $35.1 million in 2023. 2024 airline special charges included $31.1 million of accelerated depreciation on airframes identified for early retirement, compared to $35.1 million in 2023. 2024 airline special charges also included a $10.8 million ratification bonus related to the new collective bargaining agreement with our flight attendants and a $3.4 million organizational restructuring charge.

Sunseeker Resort special charges in 2024 primarily consist of a $321.8 million impairment charge on the long-lived assets of the Resort recorded in fourth quarter 2024. Other special charges in both 2024 and 2023 relate to hurricane damages and other weather-related events, offset by insurance recoveries during the period. Refer to Note 15 in the consolidated financial statements for additional information regarding the impairment charge.

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Income tax expense. We recorded a $68.2 million tax benefit in 2024 compared to a $41.5 million tax expense during 2023. The effective tax rates for 2024 and 2023 differed from the statutory federal income tax rate of 21.0 percent primarily due to state income taxes, executive compensation, and the impact of ASU 2016-09 related to share-based compensation.

2023 compared to 2022

The comparison of our 2023 results to 2022 results is included in our Annual Report on Form 10-K for the year ended December 31, 2023, under Part II Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations.

Airline Operating Statistics

The following table shows the airline operating statistics for the last three years.

For the Year Ended December 31,

Total system statistics:

Airline operating expense per ASM (CASM) (cents) 12.11 ¢ 12.02 ¢ 11.75 ¢

Fuel expense per ASM (cents) 3.31 ¢ 3.71 ¢ 4.42 ¢

Airline special charges per ASM (cents) 0.24 ¢ 0.19 ¢ — ¢

Average number of operating aircraft during period 124.7 125.2 114.2

Average block hours per aircraft per day 6.3 6.2 6.7

Full-time equivalent employees at end of period 5,991 5,643 5,306

Average fuel cost per gallon $ 2.76 $ 3.09 $ 3.73

Scheduled service statistics:

Total passenger revenue per ASM (TRASM) (cents)(2) 12.88 ¢ 13.38 ¢ 12.50 ¢

Average fare - third party products $ 8.48 $ 6.57 $ 6.07

Average fuel cost per gallon $ 2.76 $ 3.09 $ 3.72

Percent of sales through website during period 93.6 % 95.8 % 96.0 %

Other Data:

(1)Defined as scheduled service revenue divided by revenue passenger miles

(2)Various components of this measure do not have a direct correlation to ASMs. These figures are provided on a per ASM basis so as to facilitate comparisons with airlines reporting revenues on a per ASM basis.

(3)Reflects division of passenger revenue between scheduled service and air-related charges in our booking path.

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The following terms used in this section and elsewhere in this annual report have the meanings indicated below:

“Available seat miles” or “ASMs” represents the number of seats available for passengers multiplied by the number of miles the seats are flown.

“Average fuel cost per gallon” represents total aircraft fuel expense for our total system or scheduled service (as applicable) divided by the total number of fuel gallons consumed in our total system or scheduled service.

“Average stage length” represents the average number of miles flown per flight.

“Block hours” represents the number of hours during which the aircraft is in revenue service, measured from the time of gate departure until the time of gate arrival at the destination.

“Load factor” represents the percentage of aircraft seating capacity utilized (revenue passenger miles divided by available seat miles).

“Airline operating expense per ASM” or “CASM” represents airline only operating expenses excluding Sunseeker divided by total system available seat miles.

“Airline operating CASM, excluding fuel and special charges” represents airline only operating expenses excluding Sunseeker, less aircraft fuel expense and special charges, divided by total system available seat miles. This statistic provides management and investors the ability to measure and monitor our airline cost performance absent fuel price volatility.Both the cost and availability of fuel are subject to many economic and political factors and therefore are beyond our control.

“Passengers” represents the total number of passengers flown on all flight segments.

“Revenue passenger miles” or “RPMs” represents the number of miles flown by revenue passengers.

“Total passenger revenue per ASM” or “TRASM” represents total passenger revenue divided by scheduled service available seat miles.

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LIQUIDITY AND CAPITAL RESOURCES

Current liquidity

Cash, cash equivalents and investment securities (short-term and long-term) decreased to $832.9 million at December 31, 2024,from $870.7 million at December 31, 2023. Investment securities represent highly liquid marketable securities which are available-for-sale.

As of December 31, 2024, we had $275.0 million of undrawn capacity under revolving credit facilities plus another $25.1 million of undrawn capacity under a PDP financing facility and $218.5 million under prearranged aircraft financing facilities.

Restricted cash represents escrowed funds under fixed fee contracts, escrowed project funds and cash collateral against letters of credit required by hotel properties for guaranteed room availability, airports and certain other parties. Under our fixed fee flying contracts, we require our customers to prepay for flights to be provided by us. The prepayments are escrowed and are recorded as restricted cash with a corresponding amount reflected as air traffic liability until the flight is completed.

We reinstituted a regular cash dividend in third quarter 2023 at an annual rate of $2.40 per share, payable quarterly. The quarterly cash dividend was subsequently suspended in July 2024 for an indefinite period of time. We resumed our share repurchases in fourth quarter 2022 but we did not repurchase any shares on the open market during 2024. We had $75.7 million of unused authority at December 31, 2024.

We believe we have more than adequate liquidity resources through our cash, cash equivalent and short term investment balances, financing commitments, our undrawn capacity under existing credit facilities, operating cash flows and anticipated access to liquidity, to meet our current contractual obligations and remain in compliance with the debt covenants in our existing financing agreements for the next 12 months. We will continue to consider raising funds through debt financing to finance aircraft purchases and also on an opportunistic basis.

Debt

Our debt and finance lease obligations balance, without reduction for related issuance costs, decreased from $2.28 billion as of December 31, 2023 to $2.08 billion as of December 31, 2024. During 2024, we borrowed $387.0 million at variable rates. Additionally, we made principal payments of $585.5 million, including a partial prepayment of $250.0 million of principal of our Sunseeker construction loan. As of December 31, 2024, we had $275.0 million undrawn and available under our revolving credit facilities.

Sources and Uses of Cash

Operating Activities. Operating cash inflows are primarily derived from providing air transportation and related ancillary products and services to customers. During 2024, our operating activities provided $338.5 million of cash compared to $423.1 million during 2023. This change was primarily attributable to a $109.3 million decrease in airline operating income as well as a full-year operating loss from Sunseeker Resort compared to 2023 with offsets for changes in individual current asset and liability items.

Investing Activities. Cash provided by investing activities was $5.6 million during 2024 compared to cash used of $721.9 million in 2023. During 2024, cash outflows for purchases of property and equipment decreased by $535.3 million, which includes a $307.1 million decrease in cash paid for aircraft pre-delivery deposits and a $235.7 million reduction in construction costs for Sunseeker Resort. Also contributing to the change were a $110.6 million increase in proceeds from maturities of investment securities, net of purchases, a $59.6 million increase in proceeds from sales of flight equipment, and $50.0 million in proceeds from the repayment of a loan receivable.

Financing Activities. Cash used in financing activities for 2024 was $201.3 million, compared to cash provided by financing activities of $212.9 million in 2023. The change was primarily the result of a $104.7 million increase in principal payments on long term debt and finance lease obligations and a decrease of $255.6 million in proceeds from issuance of debt and finance leases. The remaining change relates to an $84.0 million decrease in Sunseeker construction financing disbursements, which are the proceeds of Sunseeker insurance recoveries disbursed to us.

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OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTRACTUAL OBLIGATIONS

The following table discloses aggregate information about our contractual cash obligations and off-balance sheet arrangements as of December 31, 2024 and the periods in which payments are due:

(1)Long-term debt obligations (including variable interest entities) include scheduled interest payments, using applicable reference rates as of December 31, 2024, and exclude debt issuance costs.

(2)Includes aircraft and engine acquisition obligations under existing purchase agreements based on our current expectations of aircraft deliveries (which differs from the contractual provisions). These amounts are not reflected on our balance sheet.

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CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The discussion and analysis of our financial condition and results of operations are based on our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amount of assets and liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of our financial statements based on events and transactions occurring during the periods reported. Note 2 to our Consolidated Financial Statements provides a detailed discussion of our significant accounting policies.

Critical accounting policies are defined as those policies that reflect significant judgments about matters that are inherently uncertain. Our actual results may differ from these estimates under different assumptions or conditions. We believe our critical accounting policies are limited to those described below.

Allways Rewards® Credit Card Program

Under the Allegiant co-brand credit card arrangement, points are sold and consideration is received under an agreement which expires in 2031. Under this arrangement, we identified the following deliverables: travel points to be awarded (the travel component), use of our brand and access to our member lists, and certain other advertising and marketing elements (collectively the marketing component). Each of these deliverables is accounted for separately and allocation of the consideration from the agreement is determined based on the relative selling price of each deliverable. We applied a level of management judgment and estimation in determining the best estimate of selling price for each deliverable by considering multiple inputs and methods including, but not limited to, the redemption value of points awarded, discounted cash flows, brand value, volume discounts, published selling prices, number of points to be awarded and number of points expected to be redeemed.

Revenue from the travel component is deferred based on its relative selling price and is recognized into revenue when the points are redeemed by cardholders and the related service is provided. Revenue from the marketing component is considered earned in the period in which points are sold and is therefore recognized into third party products revenue in the same period.

Accounting for Long-Lived Assets

We record impairment losses on long-lived assets used in operations, consisting principally of property and equipment, when events or changes in circumstances indicate, in management’s judgment, that the assets might be impaired and the undiscounted cash flows estimated to be generated by those assets are less than the carrying amount of those assets. In making these determinations, we exercise judgment in making certain assumptions, including, but not limited to: (i) estimated fair value of the assets; and (ii) estimated future cash flows expected to be generated by those assets which are based on additional assumptions such as (but not limited to) the overall effect of trends in the airline and hospitality industries and the economy, asset utilization, average fare, block hours, fuel costs, fixed fee contracts, average daily rates, occupancy, cost of goods sold, group bookings, reserve for capital replacement, length of service the asset will be used in operations, and estimated salvage values.

In estimating the fair value of Sunseeker Resort using a discounted cash flow model, we have primarily relied upon current and projected future market information and input from other industry sources and third party experts in developing projections of growth rates, occupancy, average daily rates, operating costs, the discount rate, and the terminal capitalization rate. Subsequent revisions to these estimates could be caused by changing market conditions in the region, hospitality industry, the economy, weather and related events and other factors.

In estimating the useful lives and residual values of our aircraft, we have primarily relied upon actual experience with the same or similar aircraft types, current and projected future market information, and input from other industry sources. Subsequent revisions to these estimates could be caused by changing market prices of our aircraft, changes in utilization of the aircraft, and other fleet events.

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RECENT ACCOUNTING PRONOUNCEMENTS

See related disclosure in Note 2 to our Consolidated Financial Statements.

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Item 7A. Quantitative and Qualitative Disclosures about Market Risk

We are subject to certain market risks, including changes in interest rates and commodity prices (specifically, aircraft fuel). The adverse effects of changes in markets could pose potential loss, as discussed below. The sensitivity analysis does not consider the effects that such adverse changes may have on overall economic activity, nor does it consider additional actions we may take to mitigate our exposure to such changes. Actual results may differ.

Aircraft Fuel

Our results of operations can be significantly impacted by changes in the price and availability of aircraft fuel. Aircraft fuel expense during 2024 represented 22.8 percent of our total operating expenses. Increases in fuel prices, or a shortage of supply, could have a material impact on our operations and operating results. Based on our fuel consumption during 2024, a hypothetical ten percent increase in the average price per gallon of fuel would have increased fuel expense by approximately $63.4 million. We do not hedge fuel price risk.

Interest Rates

As of December 31, 2024, we had $588.2 million of variable-rate debt, including current maturities and without reduction for $2.9 million in related costs. A hypothetical 100 basis point change in interest rates would have affected interest expense on variable rate debt by approximately $4.4 million during 2024.

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Item 8. Financial Statements and Supplementary Data

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Index to Consolidated Financial Statements

Title Page No.

Report of Independent Registered Public Accounting Firm (PCAOB ID 165) 55

Consolidated Balance Sheets as of December 31, 2024 and 2023 57

Note 1 - Organization and Business of Company 62

Note 2 - Summary of Significant Accounting Policies 63

Note 3 - Special Charges 69

Note 4 - Revenue Recognition 70

Note 5 - Property and Equipment 71

Note 6 - Long-Term Debt 72

Note 7 - Leases 75

Note 8 - Shareholders' Equity 77

Note 9 - Fair Value Measurements 78

Note 10 - Income Taxes 80

Note 11 - Related Party Transactions 81

Note 12 - Employee Benefit Plans 82

Note 13 - Commitments and Contingencies 83

Note 14 - Segments 84

Note 15 - Impairment 87

Note 16 - Subsequent Events 88

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Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors

Allegiant Travel Company:

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of Allegiant Travel Company and subsidiaries (the Company) as of December 31, 2024 and 2023, the related consolidated statements of income, comprehensive income, shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2024, and the related notes (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2024, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated March 3, 2025 expressed an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Impairment of Sunseeker Resort

As discussed in Notes 2, 3, 5, 14, and 15 to the consolidated financial statements, the Company recorded an impairment charge of $321.8 million, primarily related to Sunseeker Resort. The Company records impairment losses on long-lived assets used in operations when events or changes in circumstances indicate, in management’s judgment, that the assets might be impaired and the undiscounted future cash flows estimated to be generated by those assets are less than the carrying amount of those assets. The Company performed an undiscounted cash flow test and concluded that the carrying value of the long-lived assets was not recoverable. The estimated fair value of the assets was determined using a discounted cash flow model. The determination of fair value involved significant assumptions and estimates, including the discount rate, projected hotel revenue growth rates and the terminal capitalization rate.

We identified the evaluation of impairment of Sunseeker Resort as a critical audit matter. We performed sensitivity analysis as a risk assessment procedure over assumptions used to estimate the fair value of Sunseeker Resort and determined the discount rate, projected hotel revenue growth rates and terminal capitalization rate represented the significant assumptions. The discount rate, projected hotel revenue growth rates and terminal capitalization rate assumptions used to estimate the fair value of Sunseeker Resort were challenging to test as they represented subjective determinations of future market and economic conditions that were also sensitive to variation. Minor changes to those assumptions could have had a significant effect on the Company’s assessment of the carrying value of

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Sunseeker Resort. Additionally, the audit effort associated with this estimate required the use of professionals with specialized skills and knowledge.

The following are the primary audit procedures we performed to address this critical audit matter. We evaluated the design and tested the operating effectiveness of certain internal controls related to the Company’s impairment assessment process for Sunseeker Resort. This included controls over the development of the projected hotel revenue growth rates and terminal capitalization rate assumptions and selection of the discount rate assumption used to develop the fair value estimate. We involved valuation professionals with specialized skills and knowledge, who assisted in assessing the appropriateness of the discount rate, projected hotel revenue growth rates and terminal capitalization rate used by the Company by comparing them to market data and considering the risk profile of Sunseeker Resort.

/s/ KPMG LLP

We have served as the Company’s auditor since 2016.

Dallas, Texas

March 3, 2025

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ALLEGIANT TRAVEL COMPANY

CONSOLIDATED BALANCE SHEETS

(in thousands, except share amounts)

CURRENT ASSETS

Prepaid expenses and other current assets 67,575 63,054

CURRENT LIABILITIES

LONG-TERM DEBT AND OTHER NONCURRENT LIABILITIES

Noncurrent operating lease liabilities 62,392 82,410

COMMITMENTS AND CONTINGENCIES (NOTE 13)

SHAREHOLDERS' EQUITY

Accumulated other comprehensive income, net 3,949 3,991

The accompanying notes are an integral part of these consolidated financial statements.

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ALLEGIANT TRAVEL COMPANY

CONSOLIDATED STATEMENTS OF INCOME

(in thousands, except per share amounts)

Year Ended December 31,

OPERATING REVENUES:

OPERATING EXPENSES:

OTHER (INCOME) EXPENSES:

Earnings (loss) per share to common shareholders:

Shares used for computation:

Cash dividends declared per share: $ 1.20 $ 1.20 $ —

The accompanying notes are an integral part of these consolidated financial statements.

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ALLEGIANT TRAVEL COMPANY

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

Year Ended December 31,

Other comprehensive income (loss):

Change in available for sale securities, net of tax (42) 2,734 (799)

The accompanying notes are an integral part of these consolidated financial statements.

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ALLEGIANT TRAVEL COMPANY

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(in thousands, except share amounts)

Accumulated

Common Additional other Total

stock Par paid-in comprehensive Retained Treasury shareholders'

outstanding value capital income (loss) earnings shares equity

Stock issued under employee stock purchase plan 73 — — — — 7,939 7,939

Other comprehensive loss — — — (799) — — (799)

Stock issued under employee stock purchase plan 100 — — — — 8,167 8,167

Other comprehensive income — — — 2,734 — — 2,734

Stock issued under employee stock purchase plan 155 — — — — 9,143 9,143

Other comprehensive loss — — — (42) — — (42)

The accompanying notes are an integral part of these consolidated financial statements.

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ALLEGIANT TRAVEL COMPANY

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

Year ended December 31,

OPERATING ACTIVITIES:

(Gain) loss on aircraft and other equipment disposals (34,936) 920 2,158

Changes in certain assets and liabilities:

INVESTING ACTIVITIES:

Proceeds from loan receivable 50,000 — —

Insurance proceeds from damage to property & equipment 6,646 35,730 5,450

FINANCING ACTIVITIES:

Cash dividends paid to shareholders (21,934) (22,144) —

CASH PAYMENTS FOR:

SUPPLEMENTAL DISCLOSURE OF NONCASH TRANSACTIONS

Right-of-use (ROU) assets acquired $ 1,379 $ 8,320 $ —

Flight equipment acquired under finance leases — — 192,457

The accompanying notes are an integral part of these consolidated financial statements.

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ALLEGIANT TRAVEL COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

For the years ended December 31, 2024, 2023 and 2022

Note 1 — Organization and Business of Company

Allegiant Travel Company (the “Company”) is a leisure travel company focused on providing travel services and products to residents of under-served cities in the United States. The Company operates a low-cost, low utilization passenger airline which sells air transportation both on a stand-alone basis and bundled with the sale of ancillary air-related and third party services and products. The Company also provides air transportation under fixed fee flying arrangements, generates other ancillary revenues, and owns and operates Sunseeker Resort and Aileron, the related golf course.

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Note 2 — Summary of Significant Accounting Policies

Basis of Presentation

The accompanying consolidated financial statements include the accounts of Allegiant Travel Company and its majority-owned operating subsidiaries. The Company's investments in unconsolidated affiliates, which are 50 percent or less owned, are accounted for under the equity or cost method. All intercompany balances and transactions have been eliminated.

The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts in the financial statements and accompanying notes. Actual results could differ from these estimates.

The Company has reclassified certain prior period amounts to conform to the current period presentation.

Cash and Cash Equivalents

Cash and cash equivalents include highly liquid investments and interest bearing instruments with original maturities of three months or less when purchased. Such investments are carried at cost which approximates fair value.

Restricted Cash

Restricted cash represents escrowed funds under fixed fee contracts, and cash collateral held against letters of credit required by hotel properties for guaranteed room availability, airports and certain other parties.

Accounts Receivable

Accounts receivable are recorded at invoiced amount which approximates fair value. In addition to income tax receivable, the accounts receivable consist primarily of amounts due from credit card companies associated with the sale of tickets for future travel. These receivables are short-term and generally settle within a few days of sale. There are also receivables related to commission amounts due from rental car providers based on terms in the rental car provider agreement and amounts due related to fixed fee charter agreements. If deemed necessary, the Company records charges to its allowance for doubtful accounts for amounts not expected to be collected, for which the balance was immaterial for all years presented.

Short-term and Long-term Investments

The Company’s investments in marketable securities are classified as available-for-sale and are reported at fair value with the net unrealized gain or (loss) reported as a component of accumulated other comprehensive income (loss) in shareholders’ equity. For investments in an unrealized loss position, the Company determines whether a credit loss exists by considering information about the collectability of the instrument and current market conditions. There have been no material credit losses in the years presented. Investment securities with original maturities of three months or less are classified as cash equivalents. Investment securities with original maturities greater than three months are classified as either short-term investments or long-term investments based on the maturity date in relation to the balance sheet date. Short-term investments have a maturity date less than or equal to one year from the balance sheet date, and long-term investments have a maturity date greater than one year from the balance sheet date.

The amortized cost of investment securities sold is determined by the specific identification method with any realized gains or losses reflected in other (income) expense. The Company had no material realized losses during the years ended December 31, 2024, 2023, and 2022. The Company believes unrealized losses related to debt securities are not other-than-temporary and does not intend to sell these securities prior to amortized cost recoverability.

The Company attempts to minimize its concentration risk with regard to its cash, cash equivalents, and investment portfolio. This is accomplished by diversifying and limiting amounts among different counterparties, the type of investment, and the amount invested in any individual security, commercial paper, or money market fund.

Expendable Parts, Supplies and Fuel, Net

Expendable parts, supplies and fuel inventories are valued at cost using the first-in, first-out method. Such expendable parts, supplies and fuel are charged to expense as they are used in operations. An obsolescence allowance for expendable parts and supplies is based on salvage values and the average remaining useful life of the fleet. The obsolescence allowance for expendable parts and supplies was $12.6 million and $10.3 million at December 31, 2024 and 2023, respectively.

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Deposits and Other Assets

Deposits and other assets consist primarily of airport deposits, aircraft lease deposits, investments in unconsolidated affiliates, credits receivable under aircraft purchase agreements and scrap assets. At December 31, 2023, deposits and other assets included a $50.0 million note receivable from the counterparty in the Company's joint-venture alliance, which amount was repaid in full during 2024. The Company also had outstanding receivables from third parties as of December 31, 2024 and 2023, of which $15.1 millionand $17.0 million respectively, were due more than one year after the balance sheet date.

Operating Lease Right-of-Use Asset and Liability

The Company determines if an arrangement is a lease at inception and has lease agreements for aircraft, office facilities, office equipment, certain airport and terminal facilities, and other space and assets with non-cancelable lease terms. Certain real estate and property leases, aircraft leases, and various other operating leases are measured on the balance sheet with a lease liability and right-of-use ("ROU") asset. Airport terminal leases mostly include variable lease payments outside of those based on a fixed index, and are therefore excluded from consideration.

ROU assets represent the Company's right to use an underlying asset for the lease term, and lease liabilities represent the obligation to make scheduled lease payments. ROU assets and liabilities are recognized on the lease commencement date based on the present value of lease payments over the lease term. At lease commencement, the present value of lease payments is calculated using the rate implicit in the lease, if known, or an estimated incremental borrowing rate which takes into consideration recent debt issuances as well as other applicable market data available.

Lease payments include fixed payments, variable payments based on an index or rate, reasonably certain purchase options, termination penalties, and others as required by the Accounting Standards (ASU) 2016-02, Leases (Topic 842). Lease payments do not include variable lease payments other than those based on an index or rate, any guarantee by the lessee of the lessor’s debt, or any amount allocated to non-lease components.

Lease terms include options to extend when it is reasonably certain that the option will be exercised. Leases with a term of 12 months or less are not recorded on the balance sheet. Additionally, lease and non-lease components are accounted for as a single lease component for real estate agreements.

Property and Equipment

Property and equipment are recorded at cost and depreciated using the straight-line method over their estimated useful lives less any estimated salvage value. Property under finance leases and related obligations are initially recorded at an amount equal to the present value of future minimum lease payments computed using the rate implicit in the lease, if known, or on the basis of the Company’s estimated incremental borrowing rate, and depreciation is recorded on a straight-line basis and is included within depreciation and amortization expense. The estimated useful lives of the principal asset classes are shown below.

Aircraft, engines and related rotable parts 10 - 25 Years

Buildings and leasehold improvements 10 - 39 Years

Equipment 5 - 10 Years

Computer hardware and software 3 - 15 Years

In estimating the useful lives and residual values of aircraft, the Company primarily relies upon actual experience with the same or similar aircraft types, current and projected future market information, and input from other industry sources. Subsequent revisions to these estimates could be caused by changing market prices of the Company’s aircraft, changes in utilization of the aircraft, and other fleet events. Changes in the estimate for useful lives or residual values of the Company’s property and equipment could result in changes in depreciation expense.

The Company is required to make pre-delivery payments ("PDPs") towards the purchase price of new aircraft and engines prior to delivery. These deposits are included in flight equipment on the Company's consolidated balance sheets.

Interest is capitalized by applying a capitalization rate to the weighted-average carrying amount of expenditures for qualifying assets over the period and depreciated over the estimated useful life of the related asset(s) acquired/developed.

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Software Capitalization

The Company capitalizes certain internal and external costs related to the acquisition and development of computer software during the application development stage of projects. The Company amortizes these capitalized costs using the straight-line method over the estimated useful life of the software, which typically ranges from three to fifteen years. The Company had unamortized computer software development costs of $149.7 million and $139.1 million as of December 31, 2024 and 2023, respectively. Amortization expense related to computer software was $18.8 million, $12.4 million and $15.2 million for the years ended December 31, 2024, 2023 and 2022 respectively. Costs incurred during the preliminary and post-implementation stages are expensed as incurred.

Aircraft Maintenance and Repair Costs

The Company accounts for all non-major maintenance and repair costs incurred for its fleet under the direct expense method. Under this method, maintenance and repair costs for aircraft are charged to maintenance and repair expenses as incurred. Maintenance and repair costs include all parts, materials, and line maintenance activities required to maintain the Company's fleet.

The Company accounts for major maintenance costs of its airframes and engines using the deferral method. Under this method, the Company capitalizes the cost of major maintenance events, which are amortized as a component of depreciation and amortization expense, over the estimated period until the next scheduled major maintenance event. During 2024 and 2023, the Company capitalized $76.8 million and $68.5 million of major maintenance costs as deferred major maintenance.

Amortization expense related to deferred major maintenance, excluding amounts recorded in special charges related to the Company's aircraft retirement plan, was $65.8 million, $55.5 million, and $43.8 million for the years ended December 31, 2024, 2023, and 2022, respectively.

Measurement of Impairment of Long-Lived Assets

The Company records impairment losses on long-lived assets used in operations, consisting principally of property and equipment, when events or changes in circumstances indicate, in management’s judgment, that the assets might be impaired, and the undiscounted future cash flows estimated to be generated by those assets are less than the carrying amount of those assets. In making these determinations, the Company utilizes certain assumptions, including, but not limited to: (i) estimated fair value of the assets; and (ii) estimated future cash flows expected to be generated by those assets which are based on additional assumptions such as (but not limited to) asset utilization, average fare, block hours, fuel costs, fixed fee contracts, estimated salvage values, discount rate, projected growth rates and terminal value assumptions.

For the year ended December 31, 2024, the Company recorded a $321.8 million impairment loss related to the Sunseeker Resort Segment. The impairment is more fully discussed in Note 15.

Manufacturer's Credits

The Company periodically receives credits in connection with the acquisition of aircraft and engines or in connection with delivery delays or manufacturer's incentives. These credits are generally applied as a reduction of the cost of each item acquired under the purchase agreement at the time of delivery, which results in either deferral of the credit or recognition of an asset depending on the timing of receipt.

Revenue Recognition

Passenger revenue

Passenger revenue includes scheduled service revenue, ancillary air-related charges, and travel point redemptions from the co-brand Allegiant credit card and the Company's non-card loyalty program. Revenue from travel point redemptions from the co-brand credit card and the loyalty program are described in the Allways Rewards® Credit Card Program and Allways Rewards® Loyalty Program sections below.

Scheduled service revenue consists of ticket revenue generated from nonstop flights in the Company’s route network, recognized either when the transportation is provided, or when ticket voucher breakage occurs. Nonrefundable scheduled itineraries expire on the date of the intended flight, unless the itinerary is changed or canceled in advance of the flight under the terms and conditions of the ticket. Itineraries sold for transportation not yet used, as well as unexpired vouchers, are included in air traffic liability.

Ancillary air-related charges include various services and products related to the flight such as baggage fees, the use of the Company’s website to purchase scheduled service transportation, advance seat assignments, and other services which are not included in the base ticket price. Revenues from air-related charges are nonrefundable and recognized when the transportation is provided. If a customer cancels a flight, a voucher may be issued for a future flight under certain circumstances, at which time

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the associated revenue is recognized in scheduled service revenue upon completion of the future flight. Additionally, the Company estimates the value of vouchers that will expire unused and recognizes such estimate into revenue at the time of issuance. Air-related charges sold for transportation not yet used, as well as unexpired vouchers, are included in air traffic liability.

Various taxes and fees, assessed on the sale of tickets to customers, are collected by the Company serving as an agent, and remitted to taxing authorities. These taxes and fees are not included as revenue in the Company’s consolidated statements of income and are recorded as a liability until remitted to the appropriate taxing authority.