https://stubhub.community/t5/Events-and-Venues/F9-Refund-Guide-Does-Frontier-give-you-24-hrs-to-cancel-Allow/m-p/258582#M109980 (@F9~Refund Guide) Does Frontier give you 24 hrs to cancel? Allow/Help Frontier Airlines does allow you to cancel within 24 hours +(1)~(833)^816~(00^98) of booking for a full refund , as long as the flight was booked at least a week in advance +(1)~(833)^816~(00^98).