Your TSA PreCheck number is on your Known Traveler Number (KTN) card, in your TSA account online, or in confirmation emails from when you enrolled

The fastest way to find your TSA PreCheck number is to log into your TSA PreCheck account at universalenroll.dhs.gov. Once you sign in, your Known Traveler Number appears on your account dashboard — this is the nine-digit code you need when booking flights. If you have your physical KTN card in hand, the number is printed on the front. You can also check your email for the confirmation message TSA sent when your enrollment was approved; that message contains your number.

If you cannot locate your number through any of these routes, TSA's customer service team can look it up for you using your name and date of birth. You will need to contact them by phone or through their website, and they will confirm your number within a few minutes.

Key Takeaways

  • Your TSA PreCheck number is a nine-digit Known Traveler Number (KTN) that you enter when booking flights to access PreCheck screening lanes.
  • The easiest way to find it is logging into your account at universalenroll.dhs.gov, where it displays on your dashboard.
  • Your physical KTN card has the number printed on the front, and your enrollment confirmation email also contains it.
  • If you cannot find it yourself, TSA customer service can retrieve your number using your name and date of birth.

Checking Your TSA PreCheck Account Online

Go to universalenroll.dhs.gov and click "Sign In" at the top right. You will need to use a login method — either a username and password you created during enrollment, or a third-party account like Google, Apple, or Microsoft. Once you are logged in, your dashboard shows your Known Traveler Number in large text near the top of the page.

This is the most reliable method because your account is always current. If your PreCheck status has changed — for example, if it expired and you renewed it — the number on your dashboard reflects that. Write down the nine-digit number or take a screenshot so you have it handy when you book your next flight.

Finding Your Number on Your Physical Card

If you received a physical KTN card in the mail after your enrollment was approved, the number is printed on the front in large digits. The card is credit-card sized and usually arrives within two to three weeks of approval. Keep it in your wallet or travel documents so you have it when you need it.

The number on the card is the same as the one in your online account, so either source works when you are booking. If your card is lost or damaged, you can request a replacement through your TSA PreCheck account — go to the "My Account" section and look for the option to order a new card.

Locating Your Number in Enrollment Confirmation Emails

When TSA approved your PreCheck enrollment, they sent you a confirmation email to the address you provided during registration. This email contains your Known Traveler Number and instructions for using it. Search your email inbox for messages from "tsa@tsa.dhs.gov" or "Universal Enrollment" — the confirmation is usually titled something like "TSA PreCheck Enrollment Approved" or "Your Known Traveler Number."

If you cannot find the original email, check your spam or promotions folder — sometimes these messages get filtered. If it is not there, you can retrieve it by logging into your account at universalenroll.dhs.gov and looking for a "View Confirmation" or "read Confirmation" option in your account settings.

Contacting TSA Customer Service for Your Number

If you have tried the methods above and still cannot find your number, TSA's customer service team can retrieve it for you. Call the TSA PreCheck customer service line at 1-855-347-8371 (toll-free). Have your name, date of birth, and the email address you used to enroll ready when you call.

You can also submit a request through the TSA website at tsa.gov — look for the "Contact Us" page and select the option for PreCheck questions. Response times vary, but phone calls are usually answered within a few minutes during business hours. Customer service is available Monday through Friday, 8 a.m. to 10 p.m. Eastern time, and Saturday and Sunday, 9 a.m. to 8 p.m. Eastern time.

What to Do If Your Number Has Changed

Your TSA PreCheck number stays the same for the entire five-year period your enrollment is valid. However, if you renew your PreCheck after it expires, TSA may issue you a new number. When you renew, check your account at universalenroll.dhs.gov or wait for the confirmation email — it will contain your new number if one was issued.

If you are unsure whether your number changed after renewal, log into your account to see the current number. Use the new number when booking flights going forward. Airlines and TSA systems update automatically, so there is no extra step you need to take — just use whichever number is currently active in your account.

Using Your Number When You Book a Flight

When you purchase a plane ticket online or through a travel agent, there is usually a field for your Known Traveler Number. Enter your nine-digit TSA PreCheck number exactly as it appears in your account — no spaces or dashes. The airline's system will verify it with TSA, and if everything matches, your boarding pass will show "TSA PreCheck" in the special handling section.

If you forget to enter your number when booking, you can usually add it later through the airline's website or app, or at the airport check-in counter. However, it is easier to add it during booking so the PreCheck designation appears on your boarding pass from the start. Without the number on your boarding pass, you will not be directed to the PreCheck screening lane at security.

Frequently Asked Questions

What if I forgot my password for the TSA PreCheck website?

Click "Forgot Password" on the login page at universalenroll.dhs.gov. You will be asked to verify your identity using your email address or phone number, and TSA will send you a link to reset your password. Follow the link and create a new password, then log in to view your number.

Can I use my TSA PreCheck number if my card is expired?

Your card is just a physical copy of your number — the number itself is what matters. As long as your PreCheck status is active in TSA's system (you can check this in your online account), your number works at the airport even if the card is old or damaged. The card's expiration date matches your enrollment expiration date, so renew your PreCheck before that date passes.

Is my TSA PreCheck number the same as my driver's license number?

No. Your TSA PreCheck number is a separate nine-digit code that TSA assigns to you during enrollment. It is different from your driver's license number, passport number, or any other identification number. You only use it for TSA PreCheck screening and airline booking.

What if the number on my card does not match the number in my online account?

Contact TSA customer service at 1-855-347-8371 to report the discrepancy. Use the number shown in your online account when booking flights, since that is the one TSA's system recognizes as current. Customer service can investigate why your card shows a different number and send you a corrected card if needed.