Do you wish to know the price of cancelling a Frontier flight? If you're unsure of how much Frontier charges to change or cancel a reservation, you'll be happy to hear that if you do so within 24 hours of booking, there will be no fee and the cost of your ticket will be refunded. Frontier often offers less expensive fares than other airlines, but there is a fee if you need to cancel your travel, which may be as much as $400 depending on the length of the trip. In the case that a traveller must cancel a flight due to personal or medical issues, then the  person in question will be qualified for a refund.
more information- https://www.airlinesmap.com/frontier-airlines-cancellation-and-reimbursement