Frontier Airlines' cancellation policy allows passengers to cancel flights for a fee, depending on the timing. Cancellations within 24 hours of booking are free if the flight is more than seven days away. Beyond that, fees apply based on the fare type and when the cancellation occurs. Refundable tickets allow for easier changes, while non-refundable tickets typically receive credit fo... https://www.unitedstatesreservations.com/frontier-airlines-reservations-cancellation-changes.php