GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2024

Property and equipment are recorded at cost and depreciated using the straight-line method over their estimated useful lives less an estimated salvage value, which are as follows:


	Estimated Useful Life	Estimated Salvage Value
Aircraft and other flight equipment:
Boeing 717-200 aircraft	3 to 4 years	10%
Boeing 737 aircraft	20 to 25 years	10%
Boeing 787-9 aircraft	25 years	10%
Airbus A321neo aircraft	18 to 20 years	10%
Airbus A330 aircraft	11 to 15 years	10%
Embraer E175 aircraft	20 years	10%
Buildings	30 to 40 years	10%
Minor building and land improvements	10 years	—%
Capitalized leases and leasehold improvements	Generally shorter of lease term or estimated useful life	—%
Computer hardware and software	3 to 5 years	—%
Other furniture and equipment	3 to 10 years	—%