A lot of passengers want to know How to Add TSA Precheck to Lufthansa Airlines? Be sure that your Known Traveler Number (KTN) is active before you add TSA PreCheck to your reservation on Lufthansa. Log in to your Lufthansa account and then select your profile or booking details. Enter your KTN under passenger information. Provide your KTN to an agent or over the phone when making a reservation to be eligible for TSA PreCheck.
