How Do You Add TSA PreCheck® to Southwest Airlines? It’s easier than you think. Once you have your Known Traveler Number (KTN) from TSA PreCheck®, enter it while booking your Southwest Airlines flight. If you didn’t add it during booking, just log into your Southwest Airlines account and add your TSA PreCheck® number under your existing reservation. Your boarding pass will then show the TSA PreCheck® logo, allowing you to use expedited screening lanes at the airport. Be sure your TSA PreCheck® enrollment name matches your Southwest Airlines reservation. Knowing How Do You Add TSA PreCheck® to Southwest Airlines? ensures quicker security checks and smoother travel.
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