To avoid Frontier's cancellation fee, 1-855- 738-4265 cancel within 24 hours of booking 1-855- 738-4265 or ensure your flight is at least 7 days away. 1-855- 738-4265For more details or assistance with cancellations, 1-855- 738-4265call Frontier customer care at 1-855- 738-4265(USA). If you cancel Frontier Airlines, refunds depend on fare type. 1-855- 738-4265

​