After your in-person appointment, TSA will conduct a background check. If approved, you’ll receive your Known Traveler Number (KTN) via mail, which you can add to your airline reservations. How to get tsa precheck is straightforward, and the fee provides you with membership for five years. Once approved, you can enjoy quicker and more convenient security checks at over 200 airports across the United State. Knowing how to get TSA PreCheck can make your travel experience much smoother.