Where to find the TSA PreCheck field in Delta's app

Open the Delta app and go to your profile. Tap the menu icon (three horizontal lines) in the bottom right corner, then select "My Profile" or "Account Settings" depending on your app version. Scroll down until you see a section labeled "Known Traveler Number" or "TSA PreCheck/CLEAR." This is where you enter your TSA PreCheck number.

If you don't see this field when ready, check under "Travel Documents" or "Passport & Travel Info"—Delta moved this section in recent updates. The exact location can shift between the iOS and Android versions, so look carefully through all profile subsections if the first location doesn't have it.

Key Takeaways

  • Your TSA PreCheck number goes in the "Known Traveler Number" field in your Delta app profile, found under Account Settings or Travel Documents.
  • You need your actual TSA PreCheck number, which appears on your physical card and in your TSA account online.
  • Adding it to Delta's app does not automatically add it to your reservation—you must also enter it when you book a flight or edit an existing ticket.
  • Delta shares this information with TSA at check-in, so the number must match exactly what TSA has on file.
  • If you add the number to your profile but it doesn't appear on your boarding pass, contact Delta customer service to verify it was saved correctly.

Finding your actual TSA PreCheck number

Your TSA PreCheck number is printed on the front of your physical TSA PreCheck card, usually in the upper right corner. It is a 10-digit number that starts with numbers or letters depending on your program type.

If you don't have your card handy, log into your TSA account at tsa.gov. Go to "Manage Your Benefits" and sign in with your credentials. Your Known Traveler Number (KTN) will be displayed there. Write it down exactly as it appears—do not add spaces or dashes, even if the card shows them formatted that way.

Adding the number during booking versus your profile

Saving your TSA PreCheck number to your Delta profile is one step, but it does not automatically attach to every ticket you buy. When you book a new flight, Delta will ask for your Known Traveler Number during checkout. You can either enter it again at that moment or, if you saved it to your profile, Delta may pre-fill it for you.

If you already have a reservation without your TSA PreCheck number, you can edit the ticket. Go to "Manage My Bookings" in the Delta app, select your flight, and look for an option to add or edit your Known Traveler Number. This step is separate from having it in your profile.

What happens after you add it

Once your TSA PreCheck number is linked to your Delta reservation, it will appear on your boarding pass. At the airport, TSA will scan your boarding pass and see that you have PreCheck. This tells them you have already passed the TSA PreCheck background check and vetting process, so you can use the expedited security line.

The number must match exactly what TSA has in their system. If there is a typo or mismatch, TSA may not recognize it at the checkpoint, and you will go through standard security screening instead. Double-check the number before you save it.

Troubleshooting if the number doesn't appear on your boarding pass

If you added your TSA PreCheck number to your Delta profile but it is not showing on your boarding pass, the most common cause is that you did not also add it to that specific reservation during booking. Go back to "Manage My Bookings," select the flight, and add the number to the ticket itself.

If you added it to both your profile and your reservation and it still is not appearing, contact Delta customer service. Have your TSA PreCheck card and your reservation number ready. A representative can verify that the number was saved correctly and troubleshoot why it is not displaying on your boarding pass.

TSA PreCheck number versus other travel documents

Your TSA PreCheck number is different from your passport number, driver's license number, or Redress Control Number (RCN). Delta needs your TSA PreCheck number specifically to flag you for expedited screening. Do not confuse it with any other identification number you may have entered into your profile.

If you also have Global Entry, CLEAR, or another TSA Trusted Traveler program, each has its own number. Enter the number for whichever program you actually hold. If you hold multiple programs, you can usually enter more than one number in Delta's system, though TSA will use whichever one is most beneficial for you at the checkpoint.

Keeping your TSA PreCheck number current

TSA PreCheck is valid for five years from the date you were approved. When your membership is about to expire, TSA will send you a renewal notice. If you renew, you will receive a new card with a new number. Update your Delta profile with the new number as soon as you receive your renewed card.

If your card is lost or stolen, contact TSA when ready to report it. You can request a replacement card, which will have a new number. Update Delta with the new number once you receive the replacement.

Frequently Asked Questions

Do I have to add my TSA PreCheck number to Delta's app?

No, but it is the fastest way to may support it is on all your future Delta bookings. You can enter it manually during checkout each time you book, but adding it to your profile saves time and reduces the chance of a typo.

What if I don't have TSA PreCheck yet?

You must explore for and be approved for TSA PreCheck through TSA before you can add the number to Delta. Visit tsa.gov to find an enrollment center near you. The process takes several weeks from process to receiving your card.

Can I use my TSA PreCheck number on other airlines?

Yes. Your TSA PreCheck number works on every airline. You can add it to your profile on American, United, Southwest, and other carriers the same way you do with Delta. TSA recognizes the number regardless of which airline you fly.

Will adding my TSA PreCheck number to Delta cost anything?

No. Adding your number to Delta's app is free. You already paid for TSA PreCheck when you applied for it (the fee varies but is typically around $78 to $85 for five years). Delta does not charge to link it to your account.

What if my TSA PreCheck number is rejected when I try to add it?

Check that you entered it exactly as it appears on your card or in your TSA account—no extra spaces, dashes, or characters. If it is still rejected, contact Delta support. The issue may be a system sync delay between Delta and TSA, which usually resolves within 24 hours.