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  4. How do I add my Known Traveler Number (KTN) to previous reservations?

How do I add my Known Traveler Number (KTN) to previous reservations?

Contact your airline by phone or online to add your  Known Traveler Number (KTN). Remember to enter your full name, date of birth and KTN exactly as you provided during enrollment because if there is a mismatch in the data entry in the travel reservation, you will not receive the TSA PreCheck® indicator on your boarding pass.  

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