How to add known traveler number to existing delta reservation

Contact your airline by phone or online to add your  Known Traveler Number (KTN). Remember to enter your full name, date of birth and KTN exactly as you provided during enrollment because if there is a mismatch in the data entry in the travel reservation, you will not receive the TSA PreCheck® indicator on your boarding pass.  

If you’ve recently become a “Known Traveler” with the Transportation Security Administration’s (TSA) PreCheck program, there may be some additional steps you’ll need to take to ensure your air carrier knows you've enrolled too—especially if you’ve already booked your flight.

Here’s what you need to know about TSA PreCheck, and how to add a Known Traveler Number (KTN) to an existing reservation if you’ve recently gotten yours.

How Do I Add My Known Traveler Number to An Airline Reservation?

If you received your KTN after booking an existing airline reservation, you may add it at the boarding counter, or at the self-service kiosk at the airport. You may also be able to add it to your reservation online, when you print your boarding pass 24 hours before your flight, however, this step involves creating an account with the airline you’re flying with.

📌 Pro tip: Memorize your KTN, and add it to all your airline company profiles.

You can always call your airlines directly and ask them to add your KTN to any existing reservations. Here’s a list of handy numbers, and prompts, to get you through the hold music quickly.

  • Alaska Air – 1-800-252-7522
  • American Airlines – 1-800-433-7300
  • Continental – 1-866-935-9266
  • Delta Airlines – 1-800-221-1212
  • Frontier Airlines - 1-801-401-9000
  • Southwest Airlines – 1-800-435-9792 and select option 3.
  • United Airlines – 1-844-948-4779

What is TSA PreCheck?

TSA PreCheck is a government “membership” program designed to expedite the boarding process of participants. A KTN indicates you’ve been vetted as a low-risk traveler.

  • Eligibility. To qualify for the TSA PreCheck program, applicants must be U.S. citizens or nationals, or lawful permanent residents. Global Entry, NEXUS, and SENTRI systems allow some foreign nationals to apply.
  • TSA Pre-Check Fee. A 5-year membership in the TSA PreCheck program costs $85, renewals are $70 every five years thereafter. Some credit card loyalty programs will reimburse the $85 TSA PreCheck application fee. Check to see if yours does too.

What are the Benefits of Becoming a TSA PreCheck Member?

If you’re tired of shuffling along, undressing and removing your shoes, or unpacking your neatly stowed electronics, you’ll enjoy the ease of proceeding through designated TSA PreCheck check points without the hassle, and gain expedited access to your boarding area — usually in under five minutes.

Get Started with TSA PreCheck

TSA PreCheck makes it easy to get through security and on to your flight. If you haven't applied for yours, we can help you get pre-enrolled today. Begin by downloading the Skip app or login to your dashboard and head to services.


Skip is Here to Help. We're here to help. Search the Skip blog, or download the free Skip app on the App Store or Google Play. You'll find help with personalized booking services with TSA and your local DMV. You can even speak with our team via chat.

Yes, assuming they issue you the Known Traveler Number (KTN) before you fly, you can add it to your reservation. As long as it's at least 72 hours (3 days) before the time of your flight, you can add the KTN to your reservation via Delta's website. After that, you'll need to call or visit an agent at the check-in desk.

To do it on Delta's website, go to the "Trip Details" page for your reservation (accessible through "My Trips" from the Delta.com homepage) and scroll down to the "SECURE FLIGHT PASSENGER & CONTACT INFORMATION" section. If it's not already expanded, click the "Open" button on this section to load it.

How to add known traveler number to existing delta reservation

Secure Flight Data Section of Delta.com Trip Details Page

Here, you can enter your KTN in the "Known Traveler Number" field and click "Save" to add it to your reservation. And, of course, make sure that your gender and Date of Birth is correct, too.

Note that upon subsequent visits to this page, the information for the passenger whose Delta account is currently logged in will be displayed, but the fields will appear blank for other passengers in the same reservation, even if the secure flight data has already been saved for those passengers. You can still enter in new information for other passengers, but the existing data for them will not be displayed for privacy reasons.

Can I add TSA PreCheck to an existing reservation Delta?

Existing reservations can also be updated to add your PreCheck number. Find your reservation on Delta's website and then edit your passenger details to update your information.

How can I add my known traveler number to an existing reservation?

Contact your airline by phone or online to add your Known Traveler Number (KTN).

How do I add my KTN number to an existing reservation Delta?

How to add KTN to Delta after Booking the Flights. You can contact your airline by calling them to add your KTN to your existing reservations. On the main page, click on your name on the top right corner. Under 'Basic info,' look for add/update Secure Flight Passenger Data.

Can you add TSA PreCheck number on Delta app?

Store your passport information and TSA PreCheck Known Traveler Number securely in your SkyMiles profile in the Fly Delta app.