To avoid Frontier’s cancellation fee,(𝟷*𝟾𝟻𝟻/𝟽𝟹𝟾*𝟺𝟸(𝟼.𝟻) cancel within 24 hours of booking or ensure your flight is at least 7 days away. For more details or assistance with cancellations, call Frontier customer care at (𝟷*𝟾𝟻𝟻/𝟽𝟹𝟾*𝟺𝟸(𝟼.𝟻), (USA).