Where to find your Known Traveler Number online
Your Known Traveler Number (KTN) is a nine-character code assigned to you when you enroll in TSA PreCheck, Global Entry, NEXUS, or SENTRI. You can look it up through the official TSA website or through your trusted traveler program account without paying a fee or contacting anyone.
The fastest way is to log into your account at IdentoGO.com, which is where TSA stores enrollment records for all trusted traveler programs. Use the same login credentials you created when you enrolled. Once logged in, your KTN appears on your account dashboard or in your enrollment confirmation documents. If you enrolled through a different program (Global Entry through U.S. Customs and Border Protection, for example), you may need to log into that program's portal instead.
If you cannot remember your login password, both IdentoGO and CBP offer password reset options on their login pages. You will need access to the email address or phone number you registered with during enrollment.
Key Takeaways
- Your Known Traveler Number is stored in your online account at IdentoGO.com for TSA PreCheck or in your program's portal for Global Entry, NEXUS, or SENTRI.
- Log in with the same username and password you created during enrollment to view your KTN on your account dashboard.
- If you forgot your password, use the password reset link on the login page of whichever program you enrolled in.
- Your KTN also appears on your trusted traveler card, your enrollment confirmation email, and any receipts from your enrollment appointment.
- You do not need to contact TSA or pay a fee to retrieve your KTN — it is always available through your online account.
Check your enrollment confirmation email
When you completed your enrollment appointment, TSA or your program sent you a confirmation email. That email contains your KTN in the body of the message or in an attached document. Search your email inbox for messages from IdentoGO, TSA, or U.S. Customs and Border Protection using keywords like "enrollment confirmation," "Known Traveler Number," or "KTN."
If you cannot find the email, check your spam or promotions folder — enrollment confirmations sometimes land there by mistake. If the email is truly gone, logging into your account online is the next fastest option.
Look on your trusted traveler card
If your card has already arrived, your KTN is printed on the front or back. For TSA PreCheck cards, the number usually appears in the lower right corner. For Global Entry, NEXUS, and SENTRI cards, check the back of the card near the bottom.
If your card has not arrived yet, you can still use your KTN while traveling — you do not have to wait for the physical card. The number itself is what matters at airport security or border crossings, not the card.
What to do if you cannot log in
If you have forgotten both your username and password, start with the password reset option on the login page. You will be asked to verify your identity using information from your enrollment record, such as your date of birth or the last four digits of your Social Security number.
If password reset does not work, you may need to contact the program directly. For TSA PreCheck, call the TSA at 1-855-347-8371. For Global Entry, contact U.S. Customs and Border Protection at 1-877-227-5511. For NEXUS or SENTRI, contact the appropriate border program's customer service line. Have your enrollment confirmation number or the email address you registered with ready when you call.
Using your KTN when you travel
Once you have your KTN, enter it in the "Known Traveler Number" field when you book a flight. Most airline websites have this field on the passenger information page during checkout. Entering it correctly links your reservation to your trusted traveler status, which tells TSA that you are enrolled in a program.
At airport security, TSA will see your status and direct you to the PreCheck lane if one is available. You do not need to show your card or any other document — your KTN in the reservation is enough. For international travel through Global Entry, NEXUS, or SENTRI, you will use your card or a mobile credential at the border, not your KTN.
If your KTN has changed or you need a new one
Your KTN does not change during the life of your enrollment. If you renew your trusted traveler membership, you keep the same number. If you enroll in a different program (for example, upgrading from TSA PreCheck to Global Entry), you will receive a new KTN for that program.
If you believe your KTN was issued in error or you have concerns about your account, contact your program's customer service. They can verify your number and help you troubleshoot any issues with how it appears in airline systems.
Frequently Asked Questions
Can I use my KTN before my card arrives?
Yes. Your KTN is active as soon as your enrollment is approved, even if your physical card is still in the mail. Enter it when you book your flight, and you can use PreCheck at security without the card.
What if I entered my KTN wrong when I booked my flight?
Contact your airline before your flight to correct it. Most airlines allow you to update your reservation online or by phone. TSA checks the reservation system, so fixing it there will restore your PreCheck status for that trip.
Do I need my KTN to renew my trusted traveler membership?
No. When you renew, you log into your account using your username and password, just as you did during enrollment. The system will pull up your existing record and let you pay the renewal fee. Your KTN stays the same.
Is my KTN the same as my TSA PreCheck number?
Yes, if you enrolled in TSA PreCheck. The Known Traveler Number is the official name for the code assigned to any trusted traveler program, including PreCheck, Global Entry, NEXUS, and SENTRI. Each program issues its own KTN.
What if I lost my enrollment confirmation email and cannot log into my account?
Call your program's customer service line with your name and date of birth. They can look up your account, verify your identity, and provide your KTN over the phone or send you a new confirmation email with the number on it.