What is the cancellation policy of Frontier Airlines? Frontier accepts refunds for cancellations made within 24 hours of booking, provided the flight is more than seven days in advance. For further information or assistance, please contact customer service at +????/????????????/????????????//???????????????? (????????) ???????? [+(+????????) ???????????? ???????????? ???????????????? ... https://support.dhigroup.com/forums/general-discussion/0fd28469-a3b1-ef11-95f5-7c1e52119dc3