I booked an air ticket but my credit card has not been debited. Will there be a cancellation fee? Regardless of the debit dates of credit cards, cancellation fees apply from the completion of the payment process. Related articles Can changes/cancellations be made to reservations? Cancellation / Changes (Modification of Reservation) When does the cancellation penalty apply? And when is the latest possible cancellation date? Cancellation / Changes Can I add more people to an existing booking?