v3.26.3
REVENUE RECOGNITION - Schedule of Disaggregates Revenue by Service Type and the Timing (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Disaggregation of Revenue [Line Items]        
Total Revenue $ 164,787 $ 185,486 $ 515,708 $ 552,653
Services transferred at a point in time: | Flights, net of discounts and incentives        
Disaggregation of Revenue [Line Items]        
Total Revenue 143,898 155,169 445,145 461,067
Services transferred at a point in time: | Other        
Disaggregation of Revenue [Line Items]        
Total Revenue 16,919 23,469 55,164 66,080
Services transferred over time: | Memberships        
Disaggregation of Revenue [Line Items]        
Total Revenue 3,970 6,313 15,399 22,976
Services transferred over time: | Other        
Disaggregation of Revenue [Line Items]        
Total Revenue $ 0 $ 535 $ 0 $ 2,530