What is the 9 digit known traveler number?

A KTN is a 9-digit sequence that is unique to you and assigned after you're approved for a trusted traveler program, such as TSA PreCheck or Global Entry.



The 9-digit Known Traveler Number (KTN) is a unique identification number assigned to individuals who have been approved for a U.S. Department of Homeland Security Trusted Traveler Program, such as TSA PreCheck, Global Entry, NEXUS, or SENTRI. For TSA PreCheck members, the number often starts with "TT." For Global Entry, NEXUS, and SENTRI, the KTN is actually your PASS ID, which can be found on the back of your physical membership card in the top-left corner or in your online TTP dashboard. When you enter this 9-digit number into your flight reservation, it triggers the "TSA PRECHK" indicator on your boarding pass, allowing you to use expedited security lanes where you can keep your shoes on and leave electronics in your bag. It is essential that the name on your flight reservation matches the name associated with your KTN exactly to ensure the benefit is applied.

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This nine-digit number usually begins with 10, 13, 14, 15, 16, 50, 70, 80, 95, 98, or 99 and can be found on the back of your NEXUS, SENTRI, or Global Entry card in the upper-left corner or by logging on to the Trusted Traveler Programs website.

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Is a Passport Number the same as a Travel Document Number? Yes, your passport number is a travel document number. You must keep in mind that each travel document has specific number or digits so if you have, for example, a passport card and a passport booklet, the two numbers will be different.

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To receive TSA PreCheck®, you must include your Known Traveler Number (your CBP PASSID for Global Entry, NEXUS, or SENTRI members) in the appropriate field of your airline reservation, and the TSA PreCheck® indicator must be displayed on the boarding pass to access the lanes.

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In summary Redress numbers are intended to correct misidentifications that may lead to security issues for certain travelers, while a Known Traveler Number is a travel perk you can pay for.

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TSA PreCheck enrollment expires five years after the initial approval of your Known Traveler Number (KTN). A lot can happen in five years—if it's been a while since your last trip, or if you've simply forgotten when you were approved, you can check your status anytime.

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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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Many travelers ask where to find the redress number on their Global Entry cards, however, since not all travelers are issued redress numbers they are not typically printed on the Global Entry cards themselves.

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Your Known Traveler Number (KTN) If you have a Global Entry or TSA PreCheck membership (or both), the nine-digit Known Traveler Number is used to identify you when booking travel. When you enter a participating entry point, this number can help you pass through the expedited security lane.

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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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How it Works
  1. Apply Online. Submit an online application in 5 minutes & schedule an appointment at any of 500+ enrollment centers.
  2. Enroll in person. 10-min in-person appointment that includes fingerprinting for a background check.
  3. Travel with Ease.


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Even if you have a TSA PreCheck or a Clear membership, you will need a Real ID-compliant form of identification to make it past airport security. A Global Entry card is considered Real ID–compliant and will be accepted under the new rules.

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Visit the TSA PreCheck website and click on the Check Status button. Enter your full name, date of birth and passport number or your Known Traveler Number (KTN). Review your TSA PreCheck status. You'll know your membership is active if the website displays your current status, expiration date and KTN (if applicable).

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