If you missed your Frontier flight, contact their customer service right away. Rebooking is possible, but fees and fare differences may apply. Under the "Flat Tire" policy, if you arrive at the airport within two hours of the scheduled departure, you might be placed on standby for the next available flight. Options depend on seat availability and ticket terms.

If you missed your Frontier flight, contact Frontier Airlines' customer service immediately. Depending on the fare type, you may incur fees to rebook or change your flight. Frontier's "Flat Tire" policy may allow a same-day standby on the next available flight if you arrive at the airport within two hours of the missed departure. Fees and availability vary.