Enter your Known Traveler Number (KTN) when you book your flight on flyfrontier.com. This can be done on the Passenger Information page during the booking process.
Forgot to add your Known Traveler Number (KTN) when you booked? No worries! You can also enter this post-booking by adding it in Manage My Booking.
To add your Known Traveler Number on the website go to “My Trips/Check-In”.
Access your booking by entering your “Last Name” and “Confirmation Code”, then press the “Search” button.
Then click "Add Known Traveler Number" and add your Known Traveler Number to your booking.
Note: Once your KTN is added to your reservation, make sure that the TSA Pre✔® logo appears on your boarding pass to signal that you can directly enter the TSA Pre✔® security line.