TSA PreCheck allows Alaska Airlines passengers to clear airport security screening lines quickly. To add TSA PreCheck to Alaska Airlines, you must enter your Known Traveller Number (KTN) during flight booking in the “Traveller Information” section. For existing bookings, you can visit the “Manage Reservation” page on the Alaska Airlines website, select your flight, and add the KTN.
To ensure it applies to all future flights, passengers should log in to their Mileage Plan account and save the KTN. The passenger’s name must exactly match TSA records for PreCheck to appear on the boarding pass.
Steps to Add TSA PreCheck to Alaska Airlines
Step 1: TSA PreCheck Enrollment
You must enroll in the TSA PreCheck program before you can add it to your booking. For enrollment:

- Visit tsa.gov/precheck and tap on the “apply” button
- Fill out the online form
- Schedule an in-person appointment at a nearby center
- Provide the required documents and complete the payment
- After completing background verification, you will receive a KTN number in your email.
Step 2: Add TSA PreCheck to Alaska Airlines
There are a couple of ways to add your KTN Number to your Alaska Airlines booking.

- During Flight Booking: It is the easiest way to add your KTN number. On the Alaska Airlines website or app, enter the KTN in the “Traveller Information” section when booking. It will apply TSA PreCheck to that specific booking.
- For Existing Reservation: You can easily add KTN to an existing Alaska Airlines booking online or through the Alaska Airlines mobile app.
- Online:
- Go to alaskaair.com and log in.
- Log in to your Mileage Plan account. If you don’t have one, you can look up your reservation using your confirmation code.
- Select “Manage Reservation.”
- Enter confirmation code and last name.
- Click “Add/Edit Passenger Information.”
- Add your KTN and save.
- Mobile App:
- Open the Alaska Airlines app on your device.
- Navigate to your reservation.
- Similar to the website, find an option to edit or add passenger information, where you can input your KTN.
- Online:
- By Calling Customer Service: You can also call Alaska Airlines customer service, provide them with your confirmation code and your KTN, and they will be able to update your reservation for you.
- Important Consideration: After adding the KTN, passengers need to check their boarding pass before heading to the airport. Look for the “TSA PreCheck” indicator or logo on the boarding pass. If it’s not there, travellers may need to get a new boarding pass (either online or at the airport) for the benefits to apply.
Final Thoughts!
Adding TSA PreCheck to Alaska Airlines is a very easy and quick process. By following the above-mentioned simple steps, you can ensure your Known Traveller Number is linked to your Alaska Airlines flights, resulting in a smooth, fast, and more enjoyable airport experience.
Frequently Asked Questions (FAQs)
How do I apply for TSA PreCheck?
Apply online at tsa.gov/precheck and complete an in-person appointment.
Can I add TSA PreCheck after booking a flight with Alaska Airlines?
Yes, you can add it online, through a mobile app or by calling customer services.
Where do I enter the KTN on Alaska’s website?
In the Traveller Information section during booking or your profile settings.
Can I add TSA PreCheck to Alaska Airlines at the airport?
Yes, you can add it by speaking to an Alaska Airlines agent at the counter.
How to add KTN to the Alaska app?
Open the Alaska app, then go to Trips and select the passenger under your booking. Tap ‘TSA numbers,’ enter your KTN (Known Traveller Number), and hit ‘Add number.’