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

Open the Delta app and tap the menu icon (three horizontal lines) in the bottom right corner. Select My Profile, then tap Passport & Travel Documents. Scroll down until you see the field labeled TSA PreCheck/CLEAR Number. Tap into that field and enter your Known Traveler Number (KTN) — the nine-digit code printed on your TSA PreCheck card or in your approval letter.

If you do not see this field, make sure your Delta app is fully updated. Go to your phone's app store, search for Delta, and check whether an update is available. Older versions of the app may not display the TSA PreCheck field.

Key Takeaways

  • Your TSA PreCheck number is found in the Passport & Travel Documents section under My Profile in the Delta app.
  • You need your Known Traveler Number (KTN), which is a nine-digit code on your TSA PreCheck card or approval letter.
  • Adding your number to the app links it to your Delta frequent flyer account so the airline can display your PreCheck status at check-in.
  • The field may not appear if your app is outdated, so update Delta before looking for it.

What your Known Traveler Number looks like

Your KTN is a nine-digit code that appears on the front of your physical TSA PreCheck card, usually in the upper right corner. If you do not have the card in front of you, you can also find it in your approval email from TSA or by logging into the TSA PreCheck website at universalenroll.dhs.gov and viewing your account details.

Do not confuse your KTN with your passport number or driver's license number — they are different. The KTN is specific to your TSA PreCheck membership and is what airlines need to show your PreCheck status at the airport.

Why Delta needs your TSA PreCheck number

When you add your KTN to the Delta app, you link it to your Delta SkyMiles frequent flyer account. This tells Delta's system that you have TSA PreCheck, so the airline can display your PreCheck status on your boarding pass and check-in confirmation. At the airport, TSA agents scan your boarding pass and see that you are PreCheck-may be able to access, which allows you to go through the expedited security line.

Without your number in the system, TSA may not recognize your PreCheck status even if you have a valid card. The airline acts as the messenger between you and TSA, so linking your number to your Delta account is the critical step.

Saving and confirming your entry

After you type your nine-digit KTN into the field, tap Save or Done (the exact button name depends on your phone's operating system). The app should show a confirmation message or return you to your profile page. Wait a few seconds for the change to sync — do not close the app when ready.

Once saved, your TSA PreCheck number stays in your Delta profile. You do not need to re-enter it for every flight. However, if you renew your TSA PreCheck in the future and receive a new KTN, you will need to come back to this same screen and update it with the new number.

What to do if the field does not appear

If you cannot find the TSA PreCheck field after updating your app, try signing out of Delta and signing back in. Tap the menu icon, scroll to the bottom, and select Sign Out. Then open the app again and log in with your Delta SkyMiles username and password. This refresh sometimes makes the field visible.

If it still does not appear, contact Delta customer service through the app or call 1-800-221-1212. A representative can manually add your TSA PreCheck number to your account if the app field is not working. You will need your KTN and your SkyMiles account number ready when you call.

Adding TSA PreCheck on the Delta website instead

If you prefer not to use the app, you can add your TSA PreCheck number through Delta's website. Go to delta.com, log into your SkyMiles account, and click My Profile. Select Passport & Travel Documents and enter your KTN in the same field. The process is identical to the app, and the information syncs across both platforms.

Whether you add it through the app or the website, your TSA PreCheck status will show on all your Delta boarding passes going forward, as long as your PreCheck membership remains active.

Frequently Asked Questions

Do I need to add my TSA PreCheck number to Delta every time I book a flight?

No. Once you add your KTN to your Delta SkyMiles account, it stays there permanently. Every boarding pass you print or read will show your PreCheck status automatically, unless your PreCheck membership expires.

What happens if I enter the wrong number?

TSA will not recognize an incorrect KTN at the airport, and you will not be able to use the PreCheck line. If you realize you made a mistake, go back to the Passport & Travel Documents section, correct the number, and save it again. The change usually takes effect within a few minutes.

Can I add my spouse's or child's TSA PreCheck number to my Delta account?

No. Each person needs their own Delta SkyMiles account linked to their own TSA PreCheck number. Children under 18 can use PreCheck with a parent or guardian, but the adult's KTN goes on the adult's account and the child's KTN goes on the child's account (if they have one).

Will adding my TSA PreCheck number to Delta cost anything?

No. Linking your existing TSA PreCheck membership to your Delta account is free. You only pay for TSA PreCheck itself when you first enroll or renew it, which is a separate process outside of Delta.