How to verify your TSA PreCheck status

The fastest way to check your TSA PreCheck status is to log into your account on the official TSA website at tsa.gov. Go to the "Manage Benefits" section, enter your Known Traveler Number (KTN) or the email address you used when you enrolled, and you will see whether your membership is active, pending, or expired. If you do not have online access or prefer to call, you can contact the TSA at 1-855-347-8371 during business hours.

Your airline confirmation email is another quick reference. When you booked a flight, if you entered your KTN at the time of purchase, your boarding pass will display "TSA Pre✓" in the upper right corner. This is the clearest sign that your membership is recognized in the system for that specific flight. If your boarding pass does not show it, your KTN may not have been linked to your reservation, even if your membership is active.

You can also check the TSA PreCheck mobile app, which displays your membership status, expiration date, and KTN in one place. The app is free and available on iOS and Android. This is the most convenient option if you travel frequently and want to confirm your status before heading to the airport.

Key Takeaways

  • Log into tsa.gov with your email or Known Traveler Number to see your membership status, expiration date, and whether renewal is needed.
  • Your boarding pass will print "TSA Pre✓" if your KTN was entered at booking and your membership is active.
  • The TSA PreCheck mobile app shows your status, expiration date, and KTN without needing to visit a website.
  • Call 1-855-347-8371 if you cannot access your account online or need to confirm your status by phone.
  • An expired membership will not appear on your boarding pass, even if you entered your old KTN at booking.

What your Known Traveler Number tells you

Your Known Traveler Number is a nine-character code assigned to you when your TSA PreCheck membership is approved. If you have a KTN, you have active membership. This number stays the same for the life of your membership and does not change when you renew.

When you book a flight, you enter your KTN in the "Known Traveler Number" field during checkout. The airline then passes this number to TSA before your flight. If the number is valid and your membership has not expired, TSA will flag your reservation, and your boarding pass will show the TSA Pre✓ indicator. Without a KTN or with an expired one, you will not receive PreCheck benefits on that flight, even if you have enrolled in the past.

You can find your KTN in several places: your TSA PreCheck card (printed on the front), your enrollment confirmation email, or your account on tsa.gov. Write it down or save it in your phone so you have it ready when you book flights.

Signs your TSA PreCheck has expired

TSA PreCheck membership lasts five years from the date you were approved. After five years, your membership expires and you will no longer see the TSA Pre✓ indicator on your boarding pass, even if you enter your old KTN at booking. The TSA will send you an email reminder about 90 days before expiration, but it is your responsibility to track the date.

If your boarding pass does not show TSA Pre✓ and you know you have enrolled before, your membership has likely expired. You can confirm the expiration date by logging into tsa.gov or checking your TSA PreCheck card, which prints the expiration date on the back. Once expired, you will need to renew your membership to use PreCheck benefits again.

Expired membership does not affect your ability to fly — you will straightforward go through standard security screening instead of the faster PreCheck lane. You can renew your membership at any time, and the renewal process is the same as the original enrollment.

What to do if your boarding pass does not show TSA Pre✓

If your membership is active but your boarding pass does not display TSA Pre✓, the most common reason is that you did not enter your KTN when you booked your flight. Go back to your airline's website, find your reservation, and add your KTN to your profile. Some airlines let you do this up to 24 hours before departure. Once you add it, print a new boarding pass or read it to your phone, and the TSA Pre✓ indicator should appear.

A second reason is that you entered your KTN incorrectly — a single wrong digit will prevent the match. Double-check that you typed it exactly as it appears on your card or in your TSA account. If you are unsure of your KTN, log into tsa.gov to confirm the correct number before you rebook.

If your membership is expired, adding your KTN will not help. You will need to renew your membership first. If your membership is active, your KTN is correct, and you still do not see TSA Pre✓ after updating your reservation, contact your airline's customer service — occasionally a technical delay occurs, and they can manually flag your reservation.

How to find your KTN if you have lost it

Your Known Traveler Number appears in three places. First, check your TSA PreCheck card — it is printed on the front in large numbers. If you no longer have the card, log into your account at tsa.gov using your email address and password, and your KTN will be displayed in the "Manage Benefits" section. Third, check your original enrollment confirmation email from TSA; it contains your KTN.

If you cannot remember the email address you used to enroll, you can still retrieve your KTN by calling the TSA at 1-855-347-8371. Have your driver's license or passport ready, and they will look up your account and provide your number. Once you have it, save it somewhere you can access easily — your phone notes, email, or a document on your computer.

Checking your status before you travel

The best time to verify your TSA PreCheck status is when you book your flight, not the day before travel. This gives you time to add your KTN if you forgot, or to renew your membership if it has expired. Many travelers check their status only after they arrive at the airport and realize their boarding pass does not show TSA Pre✓, which is too late to fix.

If you travel more than once or twice a year, save your KTN in your phone or email so you can enter it automatically at booking. Some airlines also let you save your KTN in your frequent flyer profile, which will populate it on every reservation you make with that airline.

Frequently Asked Questions

Can I use someone else's TSA PreCheck number?

No. Your KTN is tied to your identity and your TSA PreCheck membership. Using someone else's number will not work — the TSA will not recognize the mismatch between the name on your ticket and the KTN, and you will not receive PreCheck benefits. Each person must enroll separately.

What if I have TSA PreCheck but my boarding pass still says standard security?

You likely did not enter your KTN when you booked. Log into your airline account, find your reservation, and add your KTN in the "Known Traveler Number" field. Print a new boarding pass, and it should show TSA Pre✓. If your membership is expired, you will need to renew it first.

Does TSA PreCheck expire if I do not use it?

No. Your membership remains active for five years from your approval date, regardless of how often you fly. You do not need to use it to keep it active. However, once the five-year period ends, your membership expires and you must renew it to continue using PreCheck benefits.

How do I know if my TSA PreCheck is still valid after I renew it?

After you complete your renewal appointment, the TSA will send you a confirmation email with your new expiration date. Log into tsa.gov to confirm your status shows "Active" and check that your new expiration date is five years from the renewal date. Your new card will arrive in the mail within two weeks.