Under normal circumstances, if you hold a non-refundable ticket, Turkish Airlines cancellation policy will require you to pay a cancellation fee. However, under certain circumstances, you may be eligible for cancellation and a full refund.
If the ticket is canceled after the end of the 24-hour risk-free timeframe, customers will have to pay a cancellation fee, depending on the routes, fare types and cancellation time. Refunds will be paid to customers who purchase a refundable ticket after deducting the cancellation fee from the original ticket charge. Customers who have non-refundable tickets are not eligible for any refund, except in certain cases where a certain amount (taxes) is paid.