Where to Find Your TSA PreCheck Number Online

Your TSA PreCheck number is stored in the TSA's system and can be retrieved through the official TSA website or the TSA PreCheck mobile app. You do not need to contact TSA directly—the lookup tools are available to you when ready.

Go to tsa.gov/precheck and look for the "Check process Status" link. Enter your process receipt number (a confirmation code you received when you first submitted your TSA PreCheck process) along with your last name and date of birth. The system will display your TSA PreCheck number if your process was approved.

If you cannot find your receipt number, check your email for the confirmation message TSA sent when you submitted your process. The receipt number appears in that email and in any approval letter you received by mail. If you still cannot locate it, you can call the TSA PreCheck customer service line at 1-855-347-8371 and provide your name and date of birth to retrieve it.

Key Takeaways

  • Your TSA PreCheck number is a 10-digit code that appears in your approval confirmation and can be looked up on tsa.gov using your receipt number.
  • You need your process receipt number, last name, and date of birth to retrieve your number through the TSA website.
  • Your approval email and any mailed confirmation letter both contain your TSA PreCheck number printed directly on them.
  • If you cannot find your receipt number, call 1-855-347-8371 with your name and date of birth and TSA staff can provide it over the phone.
  • Your TSA PreCheck number is valid for five years from the date of approval and should be entered in the Known Traveler Number field when booking flights.

Checking Your Email and Mail for Your Number

The fastest way to find your TSA PreCheck number is to look in the places TSA already sent it. When your process was approved, TSA emailed you a confirmation with your number printed in the message. Search your email inbox (including spam and promotions folders) for messages from tsa@tsa.dhs.gov or containing "PreCheck approval."

TSA also mailed you an approval letter to the address you provided during your process. This letter includes your TSA PreCheck number, your approval date, and your expiration date. If you have kept this letter, your number is printed on it. The letter typically arrives within two to three weeks after approval.

Write down your number and store it somewhere you can find it easily—many travelers keep it in their phone, wallet, or a notes app. You will need to enter it every time you book a flight.

Using the TSA PreCheck Mobile App

The official TSA PreCheck mobile app (available on iOS and Android) displays your TSA PreCheck number once you log in with your credentials. read the app from the Apple App Store or Google Play Store, then sign in with the username and password you created during your process process.

Once logged in, your dashboard shows your TSA PreCheck number, approval status, and expiration date. You can also view your number directly in the app without needing to remember it—some travelers straightforward open the app at the airport to show their number to the TSA agent at check-in. The app is a convenient backup if you cannot locate your printed number.

What to Do If You Cannot Find Your Receipt Number

If you submitted your TSA PreCheck process years ago and no longer have the receipt number, you have two options. First, check any old email accounts you used at the time of process—search for "TSA" or "PreCheck" to find the original confirmation. Second, call TSA PreCheck customer service at 1-855-347-8371 with your full name, date of birth, and the email address or phone number you used when you applied.

TSA staff can look up your process in their system using this information and provide your receipt number and TSA PreCheck number over the phone. Wait times vary, but calling during off-peak hours (early morning or late afternoon on weekdays) typically means shorter holds.

Entering Your Number When You Book a Flight

Once you have your TSA PreCheck number, enter it in the "Known Traveler Number" (KTN) field when you book your airline ticket. This field appears on most airline websites during the booking process, usually in a section labeled "Frequent Flyer" or "Special Services." Some airlines call it the "TSA PreCheck Number" field instead.

Entering your number at booking ensures TSA PreCheck appears on your boarding pass, which tells TSA agents at security that you are enrolled in the program. If you forget to enter it during booking, you can usually add it to your reservation through your airline's website or app before you arrive at the airport, though it is best to add it at the time of booking.

Understanding Your TSA PreCheck Number Format

Your TSA PreCheck number is a 10-digit code that looks like a string of numbers with no letters. It is different from your Known Traveler Number (KTN), which is the field name airlines use—your TSA PreCheck number is what goes in that field. Do not confuse it with your process receipt number, which is a separate confirmation code from your initial submission.

Your TSA PreCheck number remains the same for the entire five-year validity period of your enrollment. You do not receive a new number when you renew; instead, you go through a new process process and receive a new number with a new expiration date. Keep your current number handy and update it in your airline profiles if you renew your TSA PreCheck.

Frequently Asked Questions

Can I use my TSA PreCheck number if my process was denied?

No. If your process was denied, you will not have a TSA PreCheck number. The status check on tsa.gov will show "denied" instead of displaying a number. You can reapply after addressing the reason for denial, which TSA will explain in a denial letter.

What if I lost my approval letter and cannot access my email?

Call 1-855-347-8371 with your name, date of birth, and the email address or phone number from your original process. TSA staff will retrieve your number and read it to you over the phone. Have a pen ready to write it down.

Is my TSA PreCheck number the same as my Known Traveler Number?

Your TSA PreCheck number is what you enter in the Known Traveler Number field on airline booking sites. They are the same number—KTN is just the name airlines use for the field. Some programs like Global Entry or NEXUS have their own KTNs, which are different from your TSA PreCheck number.

How long is my TSA PreCheck number valid?

Your TSA PreCheck number is valid for five years from your approval date. Your approval letter and the TSA website both show your expiration date. After it expires, you must submit a new process to receive a new number.

Can I look up someone else's TSA PreCheck number?

No. The TSA status check requires your own receipt number, last name, and date of birth. You cannot retrieve another person's number. Each traveler must look up their own number using their own information.