You can cancel your ticket immediately if you have a reservation on an Air Serbia flight for any reason. You have two days to cancel your flight using the phone or through Air Serbia Canceled Flights. To complete the cancellation process, you will need the flight confirmation number you were given when making your reservation. You will have the choice of selecting a refund after finishing the cancellation process to get your money back. Only refundable tickets are capable of providing you with a refund, therefore you must be informed of which tickets are refundable and which are not.