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How Do You Add TSA PreCheck® to Alaska AirlinesAdding TSA PreCheck® to your Alaska Airlines flights is straightforward. Begin by logging into your Alaska Airlines Mileage Plan account and accessing your profile. Under "Traveler Information," enter your Known Traveler Number (KTN) in the designated TSA PreCheck® field. Save your changes, and you're all set! TSA PreCheck® provides expedited security
