Frontier Airlines offers flexible options for cancellations depending on the fare purchased. Passengers can cancel within 24 hours of booking without a fee if the flight is at least seven days away. Beyond that, cancellation fees may apply based on the ticket type. Discount Den members and travelers with the Works package have added flexibility. To process your cancellation, reach out to +1 (844) 733-1212. Always check Frontier cancellation policy for the latest guidelines. For any query call Frontier Airlines.