What is the known traveler number for United Airlines?

Add your Known Traveler Number (KTN) to your United MileagePlus profile and existing reservations. If you have Global Entry, NEXUS or SENTRI, your 9-digit PASS ID is your KTN. It's on the back of your card in the upper-left corner and in your TTP profile.



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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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Once you have been assigned a Known Traveler Number (KTN), you must include this number in the 'KTN' field of each reservation you make with a participating airline.

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Valid Proof of Citizenship
  • U.S. Birth Certificate.
  • U.S. Certificate of Citizenship (N-560 or N-561)
  • U.S. Certificate of Naturalization (N-550 or N-570)
  • U.S. Citizen Identification Card (I-179 or I-197)
  • Consular Report of Birth Abroad (FS-240)
  • Certification of Report of Birth Abroad (DS-1350 or FS-545)


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Store your participation preference, TSA PreCheck® KTN and Passport Number in the airlines mobile app. By opting in, your identity can be verified without presenting a physical ID at bag drop, the security checkpoint, and at the boarding gate.

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While your card isn't required to access Global Entry kiosks at the airport, there are other scenarios in which you'll need it. If you plan to take advantage of Global Entry's access to NEXUS or SENTRI, your Global Entry card will be required.

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Global Entry does not get printed on your boarding pass. Pre?? will be printed on the boarding pass for airlines and airports that participate in the precheck program.

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There are two 9-digit numbers on the back of the Global Entry card. The one on the upper left corner is the Known Traveler Number or PASSID. But on the upper right hand corner there is another 9-digit number, slightly larger than the PASSID.

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Don't wait! ACT NOW before your known traveler number (KTN) expires. That's right, your TSA Pre?® eligibility expires after five years. So if you want to keep enjoying your member benefits, renew now before your membership lapses.

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A $100 one-time fee is required with your Global Entry application and must be paid at time of application submission through the Trusted Traveler Program (TTP) system. You can pay by credit card or through an electronic bank transfer.

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