Frontier Delayed Flight Compensation Under some circumstances, Frontier Airlines offers compensation for flights that are delayed. In the event that an airline is at fault and a flight is delayed for longer than three hours, travelers may be eligible for reimbursement, vouchers, or food reimbursements. The reason for the delay, how long it lasted, and the relevant regulations all affect who is eligible for compensation. Passengers must submit a request for compensation through Frontier’s customer service, along with information on the delay and any related expenses. Every case is examined separately in order to establish eligibility.