TSA PreCheck is not something Delta sells or controls — you get it directly from TSA, but Delta lets you use it at airport security

TSA PreCheck is a program run by the Transportation Security Administration. You pay a fee to TSA, get a Known Traveler Number (KTN), and then use that number when you book flights with any airline, including Delta. Delta's role is straightforward to let you enter your KTN into your reservation so TSA knows you are coming through security that day. The actual enrollment, background check, and approval all happen between you and TSA.

The process has three steps: enroll with TSA, get your KTN, and add it to your Delta booking. Most people complete enrollment in one appointment, though TSA can take several weeks to finish the background check after that. You do not need to do anything through Delta's website to start — you go to TSA's enrollment site first.

Key Takeaways

  • You enroll and pay the TSA PreCheck fee directly to TSA at a TSA enrollment center or through TSA's online process, not through Delta.
  • After TSA approves you, you receive a Known Traveler Number that you enter into your Delta booking to use PreCheck benefits.
  • The background check can take several weeks after your enrollment appointment, so plan ahead if you have an upcoming trip.
  • You can use your KTN on any airline, not just Delta, for as long as your TSA PreCheck membership is active.

Where to enroll with TSA

Go to tsa.gov/precheck to start. You will see two options: explore online or find an enrollment center near you. The online process lets you fill out your information and pay the fee ($78 to $85, depending on whether you are renewing or enrolling for the first time) without leaving home. After you submit the online form, TSA will tell you which enrollment centers near you have appointments available.

At the enrollment center, a TSA officer will verify your identity, take your fingerprints, and confirm your background check information. This appointment usually takes 10 to 15 minutes. You will need a valid passport, driver's license, or state ID. After the appointment, TSA processes your background check, which typically takes two to four weeks, though it can be longer during busy periods.

Some enrollment centers are at airports, but many are at other locations like post offices or police departments. Check the TSA website for hours and locations in your area — appointment availability varies by location.

What happens after TSA approves you

Once TSA completes your background check and approves you, you will receive an email with your Known Traveler Number (KTN). This is a nine-character code that you will use every time you book a flight. TSA PreCheck is valid for five years from the date of your enrollment appointment, not from the approval date.

You do not need to wait for a physical card in the mail — your KTN is all you need. Some people receive a TSA PreCheck card, but it is optional and not required to use the program. Write down your KTN or save it in your phone so you have it when you book.

How to add your KTN to a Delta booking

When you book a flight on Delta's website or through a travel agent, you will see a field for your Known Traveler Number. Enter your KTN exactly as TSA sent it to you — it is case-sensitive. You can also add it to your Delta SkyMiles profile under "Traveler Information" so it automatically fills in on future bookings.

If you already have a Delta reservation and want to add your KTN, log into your SkyMiles account, find the reservation, and edit it to add your Known Traveler Number. Delta will update TSA's system with your information, and you will be may be able to access for PreCheck screening on that flight.

Make sure your name on your Delta reservation matches your government ID exactly — first name, middle initial, and last name must all be correct, or TSA may not recognize your KTN at security.

What to expect at airport security with TSA PreCheck

When you arrive at the airport, look for the TSA PreCheck lane at security. It is usually marked with blue signage and is separate from the standard security line. In the PreCheck lane, you can leave your shoes, belt, and light jacket on. You can also leave your laptop and liquids bag in your carry-on — you do not have to remove them.

TSA PreCheck is not may provide on every flight or every day. If TSA does not have your KTN in their system when you arrive, you will go through standard screening. This can happen if there is a delay in TSA updating their records after you booked, so arrive early enough that you have time for either line.

Renewing your TSA PreCheck before it expires

Your TSA PreCheck membership lasts five years. About six months before it expires, you can renew it through tsa.gov/precheck. Renewal is faster than initial enrollment — you can renew online without an in-person appointment in most cases, and the fee is the same ($78 to $85). If TSA asks you to come in person for renewal, you will get an appointment at an enrollment center.

If your TSA PreCheck expires before you renew, you will lose your KTN and will not be may be able to access for PreCheck screening until you enroll again. Set a reminder on your phone or calendar a few months before your expiration date so you do not miss the window to renew.

Common mistakes to avoid

The most common error is entering your KTN incorrectly when you book. TSA PreCheck numbers are case-sensitive and must be typed exactly as TSA sent them. If you mistype it, Delta will not flag it as wrong — the reservation will just not link to your TSA PreCheck record, and you will not get PreCheck screening.

Another mistake is booking under a different name than the one on your government ID. TSA matches your reservation name to your ID at security, so if your Delta booking says "Robert" but your ID says "Robert James" or vice versa, TSA will not recognize your KTN. Always use the full legal name that appears on your ID.

Do not assume PreCheck is automatic once you have a KTN. You have to enter it into every reservation. If you book through a third-party site like Kayak or Expedia, you may not see a field for your KTN — in that case, book directly through Delta's website or call Delta to add it after you book.

Frequently Asked Questions

Can I use my TSA PreCheck KTN on airlines other than Delta?

Yes. Your KTN works on any airline that participates in TSA PreCheck, including American, United, Southwest, and others. You enter it the same way — in the Known Traveler Number field when you book. TSA PreCheck is a TSA program, not an airline program, so your membership transfers across all carriers.

What if I do not have my KTN when I book my Delta flight?

You can book without it and add it later. Log into your Delta reservation and edit it to add your Known Traveler Number before you check in. You can also call Delta and ask them to add it to your reservation. Just make sure it is in the system before you arrive at the airport.

Do I have to renew TSA PreCheck in person?

Not usually. Most renewals can be done online through tsa.gov/precheck without an appointment. TSA will tell you during the renewal process if they need you to come to an enrollment center. Renewal is faster than initial enrollment because you have already been vetted once.

What if TSA PreCheck is not showing up at security even though I added my KTN?

Arrive early and ask the TSA officer at the checkpoint. They can look up your KTN manually. Common reasons PreCheck does not show up include a typo in your KTN, a mismatch between your reservation name and your ID, or a delay in TSA's system updating after you booked. The officer can usually resolve it on the spot.

Can I get TSA PreCheck through Delta's website instead of TSA's?

No. Delta does not enroll people in TSA PreCheck or collect fees. You must enroll through tsa.gov/precheck. Delta only lets you enter your KTN into your reservation after you have already been approved by TSA.