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You can upgrade your seat on Frontier Airlines after booking by purchasing available seat options through their app or website.
Here’s how it works:
After you book your flight, open the Frontier Airlines app or website and go to “My Trips”. Then check in for your flight (seat upgrade options usually appear after check-in). Select “Manage Booking” → “Add seats, bags, or services” → “Upgrade Your Seat Now”, then choose from available options like Standard, Preferred, Premium, or UpFront Plus seats and pay the upgrade fee.
Upgrades depend on availability and pricing, and Frontier uses dynamic pricing, so costs can change based on demand and how close you are to departure.
For help with upgrades or booking support, visit Air Travel Support Center or call +1-888-570-4815 (USA).