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Employee Retirement Plans | 12 Months Ended
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Dec. 31, 2025
Retirement Benefits [Abstract] |
Employee Retirement Plans | Employee Retirement Plans The Company recorded $71 million, $69 million and $65 million in expense related to matching contributions to employee retirement plans for the years ended December 31, 2025, 2024 and 2023, respectively. This is recorded as a component of salaries, wages and benefits in the Company’s consolidated statements of operations. Frontier 401(k) Plan The Company sponsors a Frontier Airlines, Inc. 401(k) Retirement Plan (the “Frontier 401(k) Plan”) under Section 401(k) of the Internal Revenue Code, in which all employees in all U.S. states are able to participate. This plan excludes pilots, who are covered under a separate plan discussed below. Under the Frontier 401(k) Plan, the Company matches 50% of each eligible participant’s contribution, up to 2% of their compensation for maintenance employees and up to 6% of their contribution for all other employees, excluding flight attendants and dispatchers, whose contributions are matched at 100% of up to 6% of their compensation. Contributions for employees begin after 60 days of employment and vest 25% per year over four years. Additionally, the Company sponsors a Frontier Airlines, Inc. Puerto Rico 401(k) Retirement Plan (the “Puerto Rico 401(k) Plan”), in which all Puerto Rico-based employees are able to participate. The Company matches 50% of each eligible participant’s contribution up to 6% for bi-weekly employees and 100% of contributions up to 6% for flight attendants in the Puerto Rico 401(k) Plan. FAPA Plan The Company also established the Frontier Airlines, Inc. Pilots Retirement Plan (the “FAPA Plan”), a defined contribution retirement plan for pilots covered under the collective bargaining agreement with the Frontier Airlines Pilots Association (“FAPA”). Effective September 1, 2016, pilots are no longer represented by FAPA and are represented by the Air Line Pilots Association (“ALPA”), however the FAPA Plan remained in effect under the collective bargaining agreement with ALPA. Under the latest collective bargaining agreement with the pilots, effective as of January 2019 until a new bargaining agreement is reached, the Company match no longer occurs under this plan, and instead, the Company makes nonelective contributions on behalf of each eligible pilot equal to a percentage of the pilot’s compensation, ranging from 12% to 15% over the term of the collective bargaining agreement and as negotiations continue (see Note 11). The nonelective contributions are subject to vesting based on years of service.

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