How Do You Add TSA PreCheck to Alaska Airlines to add TSA PreCheck to your Alaska Airlines reservation, first enroll in the TSA PreCheck program through their official website and complete the application process. Once approved, you'll receive a Known Traveler Number (KTN). During the booking process on Alaska Airlines' website or mobile app, enter your KTN in the appropriate field under passenger details. If you've already booked your flight, you can add your KTN by logging into your Mileage Plan account online or via the app. Ensure your KTN is correctly entered to enjoy expedited security screening at participating airports across the United States.
