Can you add a KTN after booking a flight?

How do I add my Known Traveler Number (KTN) to previous reservations? Contact your airline by phone or online to add your Known Traveler Number (KTN).



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For Existing Reservations You must have been approved for TSA PreCheck before you booked the flight in order for it to be used during a trip.

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If you still do not have a TSA PreCheck indicator on your boarding pass, please call the TSA Contact Center at (866) 289-9673, submit an online form, or contact us at @AskTSA on Twitter and Facebook Messenger.

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In The Case Of Existing Information You can update your TSA PreCheck number or Know Traveler Number even after your bookings. Just go to the official website of Delta Airlines, then find your reservation and edit your passenger information to update your PreCheck details.

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Adding KTN after booking flight
  1. Head to delta.com.
  2. Sign in or tap on your name in the top right and click My Profile.
  3. Under the my information or something similar to that, there should be a spot to put your KTN. You can always use Ctrl/cmd + f too.
  4. Your KTN will automatically work for all future flights too.


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You can also update existing reservations with your TSA PreCheck number. Go to Edit Traveler Information in the Manage Reservations section on the website, at an airport kiosk or in the United app.

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For existing Southwest reservations After you log in to your Southwest account, you can manually edit each flight to add your PreCheck number before check-in or call customer service and ask that they do it for you. You can also add your PreCheck KTN to your Southwest Rapid Rewards member profile.

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If you still do not have a TSA PreCheck indicator on your boarding pass, please call the TSA Contact Center at (866) 289-9673, submit an online form, or contact us at @AskTSA on Twitter and Facebook Messenger.

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If you're eligible for TSA PreCheck, your boarding pass will show TSA PreCheck. If you add your KTN after checking in, you'll need to get a new boarding pass.

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About 1% of all applications received by Global Entry and TSA PreCheck applications are denied.

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If you have both TSA PreCheck and Clear, then you not only go through the TSA PreCheck lane but get to cut the PreCheck line — if there is one. TSA PreCheck lines are typically short. In September 2021, 96% of TSA PreCheck passengers waited less than five minutes, according to the TSA.

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Technically your spouse can't go through the TSA PreCheck lane without their own account. In some instances, however, security may allow them through when it's clear that their boarding passes match yours as the primary account holder.

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Once you complete enrollment and are deemed eligible for the program, wait three to five days for a Known Traveler Number. However, keep in mind that it can take up to 60 days to be approved in some cases. After approval, return to the TSA PreCheck website and click the Check My Service Status link to find your KTN.

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No. The system checks your KTN against the name, gender, and birthdate on the ticket. The system will let you add any number you want, but the boarding pass will never actually show the symbol if the number doesn't match the ticketholder.

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If you want to go through TSA PreCheck with your spouse … To go through the faster, easier TSA PreCheck lane together, you and your spouse must both have a TSA PreCheck indicator on your boarding pass. This usually means you need two separate memberships.

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For existing reservations, this can be done via “My Trips.” You may also add your KTN (Known Traveler Number) and redress number during online check-in. Have your boarding pass ready: TSA PreCheck can be accessed with all Spirit boarding passes. Look for the TSA PreCheck indicator on your boarding pass.

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The fastest and easiest way to enroll in TSA PreCheck® is to start the application online.

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Failure to meet eligibility requirements
U.S. citizens and U.S. lawful permanent residents are eligible for TSA PreCheck and Global Entry. If the identifying information on your application is incorrect or incomplete, then it may be denied.

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Some passengers may randomly receive TSA PreCheck as a way to introduce them to the benefits of being a member. Consider this a marketing effort by the Department of Homeland Security to encourage people to sign up for TSA PreCheck. Military benefits.

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Is Clear better than PreCheck? Since TSA PreCheck is available at more airports and provides expedited security wait times, as well as an easier screening process, TSA PreCheck is better than Clear if you want to only get one.

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