Defined Contribution 401(k) Plan

12 Months Ended

Dec. 31, 2025

Retirement Benefits [Abstract]

Defined Contribution 401(k) Plan

Defined Contribution 401(k) Plan

The Company sponsors three defined contribution 401(k) plans, Spirit Aviation Holdings, Inc. Employee Retirement Savings Plan (first plan), Spirit Aviation Holdings, Inc. Pilots’ Retirement Savings Plan (second plan) and Spirit Aviation Holdings, Inc. Puerto Rico Retirement Savings Plan (third plan). The first plan is for all employees that are not covered by the pilots’ collective bargaining agreement, who have at least 60 days of service and have attained the age of 21.

The second plan applies to the Company’s pilots and follows the same service requirements as the first plan. Beginning on March 1, 2018, the Company contributed 11% of each pilot's annual compensation, regardless of the pilot's own contributions. This contribution increased by 1% each March through 2022, reaching 15%. Effective January 1, 2024, the Company's contribution increased to 16%. In December 2025, the Pilot contract was amended, and effective January 1, 2026, the Company's contribution was adjusted to 8%. Refer to Note 18, Commitments, Contingencies and Other Contractual Arrangements, for additional information.

Employer contributions made to all plans were $86.6 million and $23.6 million in the Successor Period and the Current Predecessor Period, respectively, and $128.5 million and $112.4 million in 2024 and 2023, respectively. These contributions were recorded within salaries, wages and benefits in the accompanying consolidated statements of operations.