Known Traveler Number lookup: What if I can’t locate my KTN? TSA PreCheck® members canlook up their KTN online. Global Entry, NEXUS or SENTRI members can sign in to theTrusted Traveler Program websiteto retrieve their PASS ID number, which serves as their KTN. How to use a Known ...
If you are a current member of the CBP program, your PASS ID/ KTN can be found on the back of your membership card.
Enter your Known Traveler Number (KTN) when you book your flight on flyfrontier.com. You can also enter this post-booking and when checking in.