Upvote:3
According to Frontier Baggage Requirements:
WHAT TIME CAN BAGS BE CHECKED?
You can check your bags up to two hours prior to your departure, so you have plenty of time to relax at the airport. Just be sure to check the Airport & Terminal info at the airport youβre flying out of, as airports in smaller cities can have different policies.
*Remember: For domestic flights you must be checked in with your baggage checked no later than 45 minutes before you departure and 60 minutes before departure for international flights.
For six hours before your flight, you will have to either take your bags with you, or store them in a bag locker at the airport.