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Many travelers are members of the TSA PreCheck or Global Entry trusted traveler programs, which allow for expedited security screening.

Having a Known Traveler Number (KTN) linked to your flight reservations enables access to the faster PreCheck lines.

If you forgot to add your KTN when originally booking with Delta, don’t worry – you can add it to your reservation later on.

If you’re short on time, here’s a quick answer: You can add your KTN to a Delta booking after ticketing by logging into your reservation online or calling Delta reservations directly.

It must be added at least 72 hours before your flight departs.

In this comprehensive guide, we’ll cover everything you need to know about adding your Known Traveler Number to a booked Delta flight, including step-by-step instructions for both the online and phone reservation processes.

Background on TSA PreCheck and Global Entry

Before diving into how to add a Known Traveler Number (KTN) to an existing Delta booking, it’s important to understand the background of TSA PreCheck and Global Entry.

These programs were created to enhance the travel experience for pre-approved passengers, allowing them to expedite the security screening process at airports and customs checkpoints.

What is TSA PreCheck?

TSA PreCheck is a program operated by the Transportation Security Administration (TSA) in the United States.

It allows eligible travelers to go through an expedited security screening process, which includes keeping shoes, belts, and light jackets on, as well as leaving laptops and compliant liquids in carry-on bags.

This program is available for U.S. citizens, U.S. nationals, and lawful permanent residents.

What is Global Entry?

Global Entry is a program operated by U.S. Customs and Border Protection (CBP) that provides expedited clearance for pre-approved, low-risk travelers arriving in the United States.

In addition to the benefits of TSA PreCheck, Global Entry members can also use Automated Passport Control (APC) kiosks when entering the country.

This program is available for U.S. citizens, U.S. lawful permanent residents, and citizens of certain other countries.

Differences Between PreCheck and Global Entry

While both TSA PreCheck and Global Entry offer expedited screening benefits, they are separate programs with distinct purposes.

TSA PreCheck is primarily focused on expediting the security screening process at airports, while Global Entry is designed to streamline the customs process when entering the United States from international destinations.

Global Entry includes all the benefits of TSA PreCheck, making it a more comprehensive option for frequent international travelers.

It’s worth noting that TSA PreCheck is available to a wider range of travelers, including those who may not have a passport or frequently travel internationally.

Global Entry, on the other hand, requires a more thorough application process, including an in-person interview and fingerprinting.

Benefits of Linking KTN to Reservations

Linking your Known Traveler Number (KTN) to your airline reservations, such as your existing Delta booking, allows you to take advantage of the expedited screening benefits offered by TSA PreCheck or Global Entry.

By providing your KTN, you can enjoy shorter lines, reduced wait times, and a more efficient travel experience.

This is particularly beneficial for frequent flyers or those who value convenience and time-saving measures.

It’s important to note that not all airlines participate in TSA PreCheck or Global Entry, so it’s always a good idea to check with your specific airline to ensure they offer these expedited screening options.

Delta Airlines, for example, is a participating airline in TSA PreCheck and allows passengers to add their KTN to their reservations for a smoother travel experience.

When to Add KTN to Delta Reservation

Adding a Known Traveler Number (KTN) to your Delta reservation can help expedite your airport security experience. Here are some important factors to consider regarding when to add your KTN:

Can Be Added After Booking

The good news is that you can add your KTN to your Delta reservation even after you’ve made your booking.

Delta allows passengers to update their reservation details, including adding a KTN, through their website or by contacting their customer service.

So, if you forgot to add your KTN during the booking process, don’t worry – you can still do it later.

Deadline for Adding KTN

While Delta allows you to add your KTN after booking, it’s important to note that there is a deadline for doing so.

In order to ensure a smoother TSA PreCheck or Global Entry experience, Delta recommends adding your KTN at least 72 hours before your flight departure.

This allows sufficient time for the necessary updates to be processed and for TSA to have the most up-to-date information.

Does It Cost Extra?

Adding your KTN to your Delta reservation does not come with an additional cost. It is a complimentary service provided by Delta to help enhance your travel experience.

However, it’s important to note that having a KTN does not guarantee TSA PreCheck or Global Entry eligibility.

These programs have their own eligibility requirements and application processes.

If you’re interested in applying for TSA PreCheck or Global Entry, you can visit the official websites for more information:

Remember, adding your KTN to your Delta reservation can save you time and make your airport security experience more efficient. So, be sure to add your KTN before your flight to enjoy the benefits of expedited screening.

How to Add KTN to Delta Booking Online

Log into Your Delta Account

To add a Known Traveler Number (KTN) to your existing Delta booking, start by logging into your Delta account.

If you don’t have an account, you can easily create one on the Delta website. Logging in will give you access to your reservations and allow you to make any necessary changes.

Find Your Reservation

Once you’re logged in, navigate to the “My Trips” section to find your existing Delta booking. This section will display all your upcoming trips with Delta.

Locate the specific reservation to which you want to add your KTN.

Click “Add Secured Flight Info”

After finding your reservation, click on the option that says “Add Secured Flight Info.” This will take you to a new page where you can input your KTN.

Enter Your KTN and Date of Birth

In the designated fields, enter your Known Traveler Number and your date of birth. Double-check that you have entered the correct information to ensure a smooth process.

Your KTN is a unique identification number issued to individuals who have been approved for TSA PreCheck or another trusted traveler program.

Confirm Addition of KTN

Once you have entered your KTN and date of birth, click on the “Confirm” or “Save” button to add your KTN to your Delta booking.

It’s important to note that not all Delta flights are eligible for TSA PreCheck or other trusted traveler benefits, so the availability of these programs may vary based on the specific flight.

Adding your KTN to your Delta booking can help streamline your airport experience by granting you access to expedited security screening.

By following these steps, you can ensure that your KTN is properly associated with your Delta reservation, giving you the convenience and benefits of TSA PreCheck or other trusted traveler programs.

Adding KTN by Calling Delta

Call Delta Reservations

If you want to add a Known Traveler Number (KTN) to your existing Delta booking, the first step is to call Delta Reservations.

You can easily find the customer service number on Delta’s official website, or simply dial the number provided on your booking confirmation email.

Remember to have your booking confirmation code handy before you make the call.

Provide Booking Confirmation Code

Once you are connected with a Delta representative, provide them with your booking confirmation code.

This code is a unique combination of letters and numbers that identifies your reservation. Sharing this code will allow the agent to access your booking details and make the necessary updates.

Give Agent Your KTN

Inform the Delta agent that you would like to add your Known Traveler Number to your booking.

The agent will ask for your KTN, which is typically a 9-digit number issued by trusted traveler programs such as TSA PreCheck or Global Entry.

Make sure to provide the correct KTN to ensure a seamless experience during your travel.

Verify Name, DOB, and Gender

The Delta agent will verify your name, date of birth, and gender to ensure that the KTN is added to the correct passenger’s profile.

This step is crucial to avoid any mix-ups or confusion during the security screening process. Double-check the information provided by the agent to ensure accuracy.

Receive Confirmation of Update

After all the necessary information has been verified and your KTN has been successfully added to your booking, the

Delta agent will provide you with a confirmation of the update. It’s always a good idea to ask for an email confirmation or jot down the agent’s name and the time of the call for future reference.

Adding a Known Traveler Number to an existing Delta booking is a straightforward process that can save you time and provide a smoother travel experience.

Remember to have your booking confirmation code and KTN ready when you call Delta Reservations, and double-check all the information provided by the agent to ensure accuracy.

Safe travels!

Important Notes About Adding KTN

Must Match Name on Reservation

When adding a Known Traveler Number (KTN) to your existing Delta booking, it is crucial to ensure that the name on your reservation matches exactly with the name associated with your KTN.

Any discrepancies in the spelling or order of your name can lead to complications and may result in the KTN not being recognized by the TSA.

To avoid any issues, double-check your reservation details and make sure they align with your KTN.

Update All Travelers on Reservation

If you are traveling with multiple individuals on the same reservation, it is important to update the KTN for all travelers.

Each passenger needs to have their own KTN linked to their name to benefit from the TSA PreCheck screening.

You don’t want to find yourself in a situation where some members of your group are eligible for expedited security screening while others are not.

Take the time to ensure that all travelers on your reservation have their KTNs correctly added.

Doesn’t Guarantee TSA PreCheck Screening

It is essential to understand that adding a KTN to your Delta booking does not guarantee that you will always receive TSA PreCheck screening.

While having a KTN significantly increases your chances of being selected for expedited screening, it is ultimately determined by the TSA on a case-by-case basis.

There are various factors that the TSA considers when deciding who is eligible for PreCheck, such as flight volume, security requirements, and random selection.

So, while adding your KTN is a step in the right direction, it’s important to be aware that it doesn’t guarantee PreCheck screening every time you travel.

Other Ways to Get TSA PreCheck

If you’re a frequent traveler, you’ll know just how valuable TSA PreCheck can be in speeding up the security screening process at airports.

And while adding a Known Traveler Number to an existing Delta booking is one way to access this perk, there are other avenues you can explore to obtain TSA PreCheck.

Here are some alternatives to consider:

Enroll in CBP Trusted Traveler Program

One of the most straightforward ways to obtain TSA PreCheck is by enrolling in the CBP Trusted Traveler Program.

This program offers several options, including Global Entry, NEXUS, and SENTRI, all of which come with TSA PreCheck eligibility.

By going through the application process and meeting the program’s requirements, you can enjoy expedited security screenings not only at domestic airports but also for international travel.

Look for TSA PreCheck on Boarding Pass

Another way to access TSA PreCheck is by keeping an eye out for it on your boarding pass.

Sometimes, airlines will randomly assign TSA PreCheck status to passengers, even if they haven’t enrolled in the program.

This can be a pleasant surprise when you find the TSA PreCheck indicator on your boarding pass, allowing you to enjoy the benefits without any extra effort.

Pay for TSA PreCheck Application

If you’re not eligible for the CBP Trusted Traveler Program or haven’t been randomly selected for TSA PreCheck, you can still obtain it by applying directly through the TSA.

By paying the application fee and going through the necessary background checks, you can secure your own TSA PreCheck status.

While this option requires a financial investment, it can be worth it for frequent travelers who desire the convenience and time-saving benefits that TSA PreCheck offers.

Remember, TSA PreCheck is just one of the ways to expedite your airport experience.

There are other programs like Clear and Global Entry that offer similar benefits. It’s worth exploring these options to find the best fit for your travel needs.


Having TSA PreCheck can make the airport screening process significantly smoother.

By taking a few minutes to add your Known Traveler Number to an existing Delta reservation, you’ll increase your chances of breezing through security and having less stress on the day of travel.

Following the step-by-step instructions above, you can easily add your KTN whether booking online or over the phone.

Have your confirmation number and personal info ready to go. With some advanced planning, you’ll be ready to take advantage of expedited screening and have an easier trip.

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