Is it possible to cancel an Allegiant flight without paying a penalty? Yes, but only under specific conditions. Allegiant Air allows you to cancel your flight within 24 hours of booking if the flight is at least seven days away, with no penalty involved. After this 24-hour window, cancellations are subject to fees, and instead of a cash refund, you’ll get a travel voucher, which is valid for future travel on Allegiant. The earlier you cancel, the more travel credit you’ll retain after deducting the fees.
