Turkish Airlines has policies about refunds that allow bookings to be cancelled within 24 hours of a single purchase at the same time without incurring any cancellation fees. As per the Turkish Airlines Refund Policy If travelers do this, they will be eligible for a full discount provided that they book their tickets at least seven days before the flight"s scheduled departure time. Tickets that are cancelled within 24 hours of takeoff, whether they are refundable or not, will qualify for a full discount.