Where to Find Your TSA PreCheck Number

Your TSA PreCheck number is a nine-digit identifier printed on your Known Traveler Number (KTN) card, which TSA mails to you after you complete enrollment. The fastest way to find it is to look at the physical card itself — the number appears in the upper right corner. If you cannot locate the card, you can retrieve the number through your TSA account online, by calling TSA directly, or by checking your enrollment confirmation email from when you first signed up.

The number stays the same for the entire five-year validity period of your membership, so once you have it, you can save it in your phone or travel documents for future use. You will need this number when you book flights, check in at the airport, or add it to your airline frequent flyer account.

Key Takeaways

  • Your TSA PreCheck number is printed on the physical KTN card TSA mails to your address after enrollment is complete.
  • You can log into your TSA account at tsa.gov/precheck to view your number without the card.
  • Your enrollment confirmation email contains your number and can be searched if you saved it.
  • The nine-digit number remains the same for all five years of your membership and should be entered when booking flights.
  • If you cannot find your number through any of these methods, TSA customer service can look it up using your name and date of birth.

Checking Your TSA Account Online

The easiest way to retrieve your number without the physical card is through the TSA PreCheck website. Go to tsa.gov/precheck and select "Sign In" in the upper right corner. You will need to log in with your credentials — either a TSA account username and password, or through a third-party login like Google or Apple ID if you set that up during enrollment.

Once logged in, your dashboard will display your membership status and your Known Traveler Number. Write it down or take a screenshot for your records. This method works whether your card is lost, not yet arrived, or straightforward misplaced at home.

Finding the Number in Your Enrollment Email

When you completed your TSA PreCheck enrollment — either online or at an enrollment center — TSA sent you a confirmation email. This email contains your nine-digit number and your membership expiration date. Search your email inbox for messages from tsa.gov or look in your spam folder in case it was filtered there.

If you enrolled several years ago and deleted the email, you can still retrieve it by logging into your TSA account online, which is faster than contacting customer service. However, if you no longer have access to the email account you used for enrollment, calling TSA is your next option.

Calling TSA Customer Service

TSA PreCheck customer service can look up your number over the phone. Call 1-855-347-8371 during business hours (Monday through Friday, 8 a.m. to 10 p.m. Eastern time, and Saturday 9 a.m. to 8 p.m. Eastern time). Have your full name, date of birth, and the email address you used during enrollment ready when you call.

Wait times can be long during peak travel seasons, so calling early in the week or mid-morning often results in shorter holds. TSA will confirm your membership status and provide your number over the phone, which you can write down when ready.

What to Do If Your Card Never Arrived

TSA typically mails your KTN card within two to three weeks after your enrollment is approved. If more than a month has passed and you have not received it, log into your TSA account to confirm your membership is active and your mailing address is correct. If the address is wrong, you can update it and request a replacement card.

You do not need to wait for the physical card to use your TSA PreCheck number — you can start using it when ready after enrollment is approved. Enter your nine-digit number when you book flights or check in at the airport, even if the card has not arrived yet. If you lose the card after it arrives, you can request a replacement through your TSA account for a small fee, or straightforward continue using the number itself.

Adding Your Number to Airline Accounts

Once you have your TSA PreCheck number, add it to your frequent flyer account with each airline you fly. Log into your airline account, find the section for "Known Traveler Number" or "TSA PreCheck," and enter your nine-digit number. This step ensures the airline includes it in your reservation, which tells TSA at the airport that you are enrolled.

You can also enter your number directly when booking a flight — most airline booking pages have a field for it during checkout. Entering it at booking is especially useful if you do not have a frequent flyer account with that airline or prefer not to create one.

Frequently Asked Questions

What if I forgot my TSA account password?

Go to tsa.gov/precheck and click "Sign In," then select "Forgot Password" on the login page. TSA will send a reset link to the email address associated with your account. If you no longer have access to that email, call TSA customer service at 1-855-347-8371 and they can help you regain access to your account.

Can I use my TSA PreCheck number before the physical card arrives?

Yes. Your number is active as soon as your enrollment is approved, which usually happens within three to five business days. You can enter it when booking flights or at airport check-in without the physical card. The card is a convenience, not a requirement.

Is my TSA PreCheck number the same as my frequent flyer number?

No. Your TSA PreCheck number is a nine-digit Known Traveler Number issued by TSA. Your frequent flyer number is a separate identifier issued by each airline. You need to add your TSA PreCheck number to your airline account so the airline knows to include it in your reservation.

What if I have multiple TSA PreCheck memberships?

You should have only one active TSA PreCheck membership at a time. If you enrolled twice by mistake, contact TSA customer service to cancel the duplicate. Using multiple numbers can cause confusion at the airport and may result in your PreCheck benefits not being recognized.

Do I need my TSA PreCheck number to go through security?

No. Your TSA PreCheck benefits are tied to your name and date of birth in the TSA system. Entering your number when you book or check in straightforward tells the airline to flag your reservation so TSA knows you are enrolled. If you forget the number, you can still go through PreCheck security if your name matches your ID and your enrollment is current.