The airline allows passengers to cancel their flights within 24 hours of purchasing the tickets according to the Frontier Airlines Cancellation Policy. This policy establishes that any Frontier Airlines flight cancellation procedure made within 24 hours of ticket purchase must be eligible for a refund. The airline will not charge a Frontier Airlines Cancellation Fee as long as the flight is scheduled to depart at least 7 days after booking the ticket. https://www.travoguru.com/travel-tips/refund-cancellation-policy-frontier-airlines/