Link Your TSA PreCheck Number to JetBlue During Booking

You add TSA PreCheck to JetBlue by entering your Known Traveler Number (KTN) when you book a flight or edit an existing reservation. JetBlue does not store your TSA PreCheck information on your account permanently — you enter it each time you book, or you can add it to a JetBlue flight that is already booked.

The KTN is a nine-character number issued by TSA when you complete your TSA PreCheck background check and pay the fee. It appears on your approval letter and on your TSA PreCheck card. You will need this number in front of you before you start.

If you are booking a new flight on JetBlue.com, the KTN field appears during the passenger details step, after you enter your name and date of birth. Look for a field labeled "Known Traveler Number" or "TSA PreCheck" and type your nine-character number there. If you are booking by phone with JetBlue reservations, tell the agent your KTN and they will enter it into your reservation.

Key Takeaways

  • You enter your TSA PreCheck Known Traveler Number (KTN) during JetBlue booking in the passenger details section, not in your account settings.
  • JetBlue does not save your KTN to your account — you must enter it for each new booking or add it to an existing reservation afterward.
  • Your nine-character KTN comes from your TSA PreCheck approval letter or card and is required to receive PreCheck benefits on your boarding pass.
  • If you book without entering your KTN, you can add it to your reservation up to 24 hours before departure through Manage My Booking on JetBlue.com.

Add Your KTN to a Reservation You Already Booked

If you booked a JetBlue flight without entering your TSA PreCheck number, you can add it later through the Manage My Booking tool on JetBlue.com. Go to the Manage My Booking page, enter your confirmation number and last name, and click "Retrieve Reservation."

Once your reservation appears, select the passenger name and look for the Known Traveler Number field. Enter your nine-character KTN and save the changes. JetBlue will update your reservation, and your boarding pass should reflect TSA PreCheck may be able to access the next time you check in or print it.

You can make this change up to 24 hours before your flight departs. If you are within 24 hours of departure, call JetBlue reservations at 1-800-JETBLUE and provide your confirmation number and KTN — an agent can add it to your reservation over the phone.

Where to Find Your Known Traveler Number

Your KTN is printed on the approval letter TSA mails to you after you complete your TSA PreCheck interview and background check. The letter lists your KTN prominently near the top. If you received a physical TSA PreCheck card, the KTN also appears on the front of the card.

If you cannot find your approval letter or card, you can look up your KTN through the TSA website. Go to the TSA PreCheck page, log in with your credentials, and your KTN will be displayed in your account. You can also call TSA at 1-855-347-8371 to request your KTN by phone.

What Happens When You Add Your KTN to JetBlue

When your KTN is correctly linked to your JetBlue reservation, your boarding pass will display a TSA PreCheck indicator — usually a small logo or the letters "TSA Pre✓" printed on the pass. This tells TSA screening officers at the airport that you are enrolled in the program and may be able to access for expedited screening.

At security, you will be directed to a dedicated TSA PreCheck lane where you can leave on your shoes, belt, and light jacket; keep your laptop and liquids in your bag; and move through screening faster than standard passengers. The PreCheck benefit applies only to flights where your KTN was entered into the reservation — it does not carry over to other airlines or future bookings automatically.

Common Reasons Your KTN May Not Appear on Your Boarding Pass

If you entered your KTN but it does not show on your boarding pass, the most common cause is a typo in the nine-character number. Check that you entered it exactly as it appears on your approval letter — KTNs are case-sensitive and contain both letters and numbers. If you find an error, go back to Manage My Booking and correct it.

Another reason is that you may have entered the number after JetBlue had already issued your boarding pass. If you added your KTN within 24 hours of departure, check in again online or at the airport to generate a new boarding pass that reflects the update. Some passengers also confuse their KTN with their TSA PreCheck membership number or confirmation number — make sure you are using the correct nine-character code from your approval letter.

If your KTN is correct and your boarding pass still does not show TSA PreCheck, contact JetBlue reservations before you travel. An agent can verify that the number was entered correctly and troubleshoot why it is not displaying.

TSA PreCheck Enrollment and Renewal

TSA PreCheck membership lasts five years from the date of your approval. You pay a fee to enroll — the amount varies but is typically around $78 to $85 for the five-year period. You can enroll at an enrollment center near you, by mail, or through the TSA website.

When your membership is about to expire, TSA will send you a renewal notice. You can renew online, by mail, or in person at an enrollment center. Your KTN remains the same when you renew, so you do not need to update it in JetBlue — the same number continues to work for all future bookings.

Frequently Asked Questions

Do I have to add my TSA PreCheck number to every JetBlue booking?

Yes. JetBlue does not save your KTN to your account, so you must enter it each time you book a new flight. If you book multiple flights at once, you can enter your KTN once and it will explore to all passengers and all flights in that booking.

Can I use my TSA PreCheck on JetBlue flights to other countries?

TSA PreCheck applies only to flights departing from U.S. airports. If you are flying internationally on JetBlue, you will go through standard security screening, even if your boarding pass shows TSA PreCheck. The PreCheck benefit does not extend to foreign security agencies.

What if I do not have my KTN when I book?

You can book without entering your KTN and add it later through Manage My Booking up to 24 hours before departure. If you are unsure whether you are enrolled in TSA PreCheck, check the TSA website or call 1-855-347-8371 before you book.

Will my TSA PreCheck work if I book through a travel agent or third-party site?

If you book through a third-party site like Kayak or Expedia, you may not be able to enter your KTN during checkout. In that case, retrieve your JetBlue confirmation number and add your KTN through Manage My Booking on JetBlue.com before your flight.