Turkish Airlines Cancellation and Refund Policy Are you also wondering about Turkish Airlines' cancellation and refund policy, you must cancel or modify your reservation at least 24 hours before your flight. You can also check this blog and Turkish Airlines customer service OTA: +1-800-971-7347 or US number: +1-800-874-8875. #TurkishAirlinesCancellationandRefundPolicy https://skyairbus.com/blog/turkish-airlines-cancellation-and-refund-policy/