Can a KTN be added to an existing reservation?

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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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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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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For Existing Reservations Log into your flight reservation under the Traveler Info section and add your KTN there. 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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About 1% of all applications received by Global Entry and TSA PreCheck applications are denied.

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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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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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You book with an airline that doesn't participate in TSA PreCheck.
  • China Southern Airlines.
  • China Eastern Airlines.
  • EasyJet.
  • EgyptAir.
  • Norwegian Airlines.
  • Qatar Airways.
  • Ryanair.
  • Iceland Air.


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Get through the line faster with TSA PreCheck™.
TSA PreCheck™ lets you leave your shoes, belt, and light jacket on while you go through security. You can also leave your laptop and your liquids in your bag.

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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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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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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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TSA PreCheck® provides expedited security screening benefits for flights departing from U.S. Airports. Global Entry provides expedited U.S. customs screening for international air travelers when entering the United States. Global Entry members also receive TSA PreCheck® benefits as part of their membership.

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The application fee for TSA PreCheck® is $78 for 5 years.

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Yes, other members of your group can usually go through TSA PreCheck if you have it. However, each person must meet the requirements and be approved for PreCheck separately. To do this, they must complete an enrollment process with the Transportation Security Administration.

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