v3.26.1
REVENUE RECOGNITION - Schedule of Deferred Revenue (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Disaggregation of Revenue [Line Items]    
Deferred revenue - total $ 687,576 $ 738,852
Flights - prepaid    
Disaggregation of Revenue [Line Items]    
Deferred revenue - total 675,136 726,506
Memberships - annual dues    
Disaggregation of Revenue [Line Items]    
Deferred revenue - total 7,908 10,328
Flights - credits    
Disaggregation of Revenue [Line Items]    
Deferred revenue - total 1,345 2,018
Other    
Disaggregation of Revenue [Line Items]    
Deferred revenue - total $ 3,187 $ 0