Will I be charged a fee to cancel my reservation with Frontier Airlines? According to Frontier Airlines cancellation policy, all tickets might be dropped for a full discount as long as 24 hours after the hour of procurement. No dropping expense applies. On the off chance that it has been over 24 hours since you bought your ticket, or the booking was made in somewhere around 7 days of movement, charge might apply. Tickets should be dropped before flight takeoff to hold their worth.