Typically, Frontier Airlines does not refund cancellations as most of its fares are non-refundable. If you cancel, you might receive a travel credit for a future flight, depending on your fare and the timing of the cancellation. Cancellations made within 24 hours of booking may result in a full refund, as long as the flight is more than 7 days away. If you want more flexibility, the "WORKS" package includes refundable tickets and allows for free changes. Be sure to read the cancellation policy of your specific reservation for any potential exceptions.