Check that you are a U.S. citizen, U.S. national, or lawful permanent resident
Create an account on the TSA PreCheck application website
Complete the online application form
Schedule an in-person appointment at an enrollment center
Bring required identification documents to your appointment
Pay the application fee
Provide fingerprints and have your photo taken if required
Wait for TSA to review your application
Receive your Known Traveler Number if approved
Add your Known Traveler Number to your airline reservations and frequent flyer profiles