If you have a reservation on an Air Serbia flight and need to cancel your ticket right away for some reason, you can do so. You have two days to cancel your ticket by Air Serbia Cancellation Policy or by phone. You will want the flight confirmation number you receive upon booking in order to complete the cancellation process. After completing the cancellation process, you will be given the opportunity to pick a refund to receive your money back. You must be aware of which tickets are refundable and non-refundable as only refundable tickets can reimburse your money.