How Do You Add TSA PreCheck to Alaska Airlines

How Do You Add TSA PreCheck to Alaska Airlines to add TSA PreCheck to your Alaska Airlines reservations, first enroll in TSA PreCheck through their website. Once approved, you'll receive a Known Traveler Number (KTN). During booking on the Alaska Airlines website or app, enter your KTN in the passenger details section. If you've already booked, add your KTN by logging into your Mileage Plan account online or via the mobile app. Alternatively, call Alaska Airlines customer service for assistance