REVENUE - Additional Information (Details) $ in Thousands	3 Months Ended
Mar. 31, 2026 USD ($) aircraft	Mar. 31, 2025 USD ($) aircraft
REVENUE
Total Operating Revenues	$ 338,366	$ 326,649
Cargo \| Aircrafts Operated For Amazon
REVENUE
Number of cargo aircraft \| aircraft	2	3
Cargo \| Minimum \| Aircrafts Operated For Amazon
REVENUE
Number of cargo aircraft \| aircraft	20	12
Cargo \| Maximum \| Aircrafts Operated For Amazon
REVENUE
Number of cargo aircraft \| aircraft	22	20
Rental Revenue
REVENUE
Total Operating Revenues	$ 3,350	$ 8,636
Passenger
REVENUE
Total Operating Revenues	285,259	$ 285,888
Revenue recognized	$ 134,824

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