According to the Frontier Airlines Cancellation Policy 24 hrs cancellation policy, all ticket types are entitled to a full refund until they are canceled on the same booking day. For a full refund, the passenger must fill out an online refund form or contact Frontier Airlines customer service.
Refunds will be made after the cancellation of the flight. Once it is calculated and processed, it takes about 20 business days to clear the charge. However, if passengers use a credit card to pay the airfare, they will receive a refund within 7 working days.
If you cancel your first round trip ticket, the other flight will be automatically canceled by the airline. Cancellation of a single-ticket ticket does not validate borderline airlines.