I forgot my Known Traveler Number (KTN). How do I find it?

If you are a member of the TSA PreCheck® Application Program, look up your Known Traveler Number (KTN) here.  If you are a member of another trusted traveler program, such as Global Entry, NEXUS, or SENTRI, log on to the Trusted Traveler Program website to obtain your PASSID, which is your KTN.

Why TSA PreCheck Isn't Showing Up on Your Boarding Pass

How to Add Your Known Traveler Number

How to Add TSA PreCheck to Your Airline Ticket - NerdWallet

I forgot my Known Traveler Number (KTN). How do I find it?

How to Apply for TSA PreCheck or Global Entry

Known Traveler Number Guide: (How to Lookup, Global Entry, Pre-Check) [2023] - UponArriving

TSA PreCheck - Cost, Renewal, Locations, Application, Benefits, Airports, & Airlines in 2023 - The Vacationer

The SPRK Reservation Screen > The SPRK Toolbox > Add APIS > APIS Options > APIS Supplementary > Known Traveler Number

TSA PreCheck Program

TSA PreCheck® Program - Alaska Airlines