If you need to cancel your Qatar Airways flight, it's essential to do so within the airline's cancellation policy. (888) 800-9117 (USA) or +44 (20) 39000610 (UK) Typically, you can cancel up to 24 hours before departure, but this can vary based on your ticket type. For assistance, you can reach Qatar Airways customer service at (888) 800-9117 (USA) or +44 (20) 39000610 (UK). Be sure to check your booking terms to avoid penalties. For support, contact (888) 800-9117 (USA) or +44 (20) 39000610 (UK).