
If you are a member of the TSA PreCheck program, you can add your Known Traveler Number (KTN) to your reservation to access expedited security screening at the airport. TSA PreCheck is a program offered by the Transportation Security Administration (TSA) that allows eligible travelers to speed up their screening process at participating U.S. airports and for most international trips. To add your KTN to a new reservation, you can log in to your airline loyalty program account, where your personal information will be automatically populated, including your PreCheck number. If you don't have an account or are not logged in, you can manually add your KTN during the booking process when entering your passenger information. You can also add your KTN to an existing reservation by updating your passenger details on the airline's website or by contacting their customer service. Additionally, you can add your KTN at the airport by informing an attendant, who will print a new ticket with PreCheck.
| Characteristics | Values |
|---|---|
| Can I add KTN at the airport? | Yes, you can add KTN at the airport, but you will need to get a new boarding pass. |
| How to add KTN to an existing reservation? | You can add your KTN to an existing reservation by updating your flight and airline loyalty program profiles. You can also call the airline customer service to update your information. |
| How to add KTN to a new reservation? | You can add your KTN to a new reservation by logging in to your airline account and adding your KTN in the "Secure Traveler" section. You can also add your KTN manually during the booking process when entering your passenger information. |
| What is TSA PreCheck? | TSA PreCheck is an expedited security program that allows eligible travelers to speed up their screening process at participating U.S. airports and for most international trips. |
| How to get TSA PreCheck? | To get TSA PreCheck, you must apply and get approval from the Transportation Security Administration (TSA). You can also get TSA PreCheck if you're enrolled in a Customs and Border Protection (CBP) Trusted Traveler program, such as Global Entry, SENTRI, or NEXUS. |
| Benefits of TSA PreCheck | With TSA PreCheck, you can go through a dedicated screening lane at the airport where you may not need to remove your shoes, jacket, belt, or laptop from your bag. |
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What You'll Learn

Adding KTN to a new reservation
Adding your Known Traveler Number (KTN) to a new reservation can be done in several ways, depending on the airline and your membership status. Here is a step-by-step guide on how to add your KTN to a new reservation:
Delta Airlines:
If you are flying with Delta Airlines, the best way to add your KTN to a new reservation is to log in to your Delta SkyMiles account. This will automatically populate your personal information, including your PreCheck number, when making a new reservation. If you don't have a Delta SkyMiles account or are not logged in, you can still add your KTN manually during the booking process when entering your passenger information.
American Airlines:
For American Airlines, log in to your AAdvantage account and choose "Information and Password." Then, add your PreCheck KTN in the "Secure Traveler" section under the Known Traveler Number field. If you are not an AAdvantage member, you must add your KTN to each reservation when you book.
Southwest Airlines:
Southwest flyers can add their KTN at several steps during the booking process. After choosing your flight dates and times, enter your name in the "Who's Flying?" section. Below that, there is a dropdown menu for "Secure Traveler Information." Click on that button and enter your KTN in the "Known Traveler #" field. This ensures that your KTN is submitted to TSA's Secure Flight system.
United Airlines:
When booking a reservation with United Airlines, your KTN will automatically populate when you are logged in to your United MileagePlus account. If you are not logged in, you can manually add your KTN to a reservation during the booking process. After entering your personal information, click on the "Known Traveler Number and Redress Number" dropdown menu and enter your KTN in the designated field.
General Instructions:
Regardless of the airline, it is recommended to add your KTN or PASS ID to your airline loyalty program profile. This will make it easier to include your KTN when booking future flights or when attaching your loyalty number to a reservation. Remember that even if you have a trusted traveler card, you must still add your KTN to your reservation to access TSA PreCheck lanes. If you add your KTN after checking in, you will need to obtain a new boarding pass.
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Adding KTN to an existing reservation
Adding your Known Traveler Number (KTN) to an existing reservation can save you time and hassle at the airport. If you’re a frequent traveller and have enrolled in a trusted traveller programme like TSA PreCheck or Global Entry, you’ll want to make sure your KTN is associated with your flight reservation. Having a KTN allows you to enjoy expedited security screening, skip the long lines, and keep your shoes and belt on.
American Airlines
Log in and go to "Your Account." Choose "Information and Password," then add your PreCheck number in the KTN field in the "Secure Traveller" section. You can also add TSA PreCheck to your existing reservation on American Airlines. To do so, click on "Manage Trip" for each reservation. Then, click on "Add/Edit Passenger Information" to add your PreCheck number. You can also call American Airlines customer service to have them update your information.
Delta
Log in to your Delta SkyMiles account. This will automatically populate most of your personal information, including adding your PreCheck number to your reservation. Yes, those reservations can also be updated to add your PreCheck number. Find your reservation on Delta's website, then edit your passenger details to update your information.
Southwest
Enter your PreCheck KTN during the booking process. After you've chosen your flight dates and times, you'll enter your name in the "Who's Flying?" section. Below that, there is a dropdown menu for "Secure Traveller Information." Click that button, then enter your PreCheck number in the "Known Traveler #" field. This will make sure that your PreCheck number will be submitted along with your information to TSA's Secure Flight system for processing. Adding TSA PreCheck to an existing Southwest reservation is pretty straightforward. After you log in to your Southwest account, you can manually edit each flight to add your PreCheck number before check-in or call customer service.
United
When booking a reservation, your PreCheck number will automatically populate when you're logged in to your United MileagePlus account. You can also manually add it to a reservation during the booking process. After entering your personal information, click on the "Known Traveler Number and Redress Number" dropdown menu. Enter your PreCheck number in the "Known Traveler Number/PASS ID" field. You can also update existing reservations with your TSA PreCheck number. Go to "Edit Traveler Information" in the "Manage Reservations" section on the website, at an airport kiosk or in the United app.
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KTN eligibility
To be eligible for a Known Traveler Number (KTN), you must be a U.S. citizen, U.S. national or Lawful Permanent Resident (LPR) and cannot have been convicted of certain crimes. If you are already a member of Global Entry, NEXUS, SENTRI or another TSA initiative, you do not need to apply for a KTN.
If you are eligible, you must apply for a KTN and pay an enrollment fee of $76.75. This fee covers your eligibility for five years and includes a background check. Once approved, you will receive your KTN within 3-5 days, although some applications can take up to 60 days.
Children under 17 do not need their own KTN if they are travelling with an adult who has one. The adult and child must be on the same airline reservation, and the adult's boarding pass must have the TSA PreCheck indicator. If the child is on a separate airline reservation, they will need their own KTN.
To participate in TSA PreCheck, you must apply and get approval from the Transportation Security Administration (TSA). TSA PreCheck is also available if you are enrolled in a Customs and Border Protection (CBP) Trusted Traveler program, including Global Entry, SENTRI, or NEXUS.
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KTN application process
The Known Traveler Number (KTN) is a number issued by the Transportation Security Administration (TSA) to members of the TSA PreCheck program. The TSA PreCheck program allows eligible travelers to expedite their security screening process at participating U.S. airports and for most international trips.
To obtain a KTN, you must first apply for the TSA PreCheck program through an authorized enrollment provider, such as CLEAR, IDEMIA, or Telos. You can submit your application online and complete the enrollment process at your chosen provider, which includes fingerprinting, document and photo capture, and payment. The cost of enrollment may vary depending on the provider. Once your application is approved, you will receive your KTN.
After receiving your KTN, you can add it to your airline reservations to access the benefits of TSA PreCheck. When booking a new flight, you can include your KTN during the reservation process when entering your passenger information. If you have an existing reservation, you may be able to update your passenger details to include your KTN, depending on the airline. Alternatively, you can contact the airline's customer service to have them update your information.
Additionally, if you are a member of an airline loyalty program, such as Delta SkyMiles or American Airlines AAdvantage, you can add your KTN to your profile. This will automatically add the TSA PreCheck indicator to your future bookings. However, even with a KTN, you must still ensure that your boarding pass displays the TSA PreCheck logo to access the dedicated screening lane at the airport.
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KTN customer support
KTN, or Known Traveler Number, is a number issued when you are approved for TSA PreCheck, which allows you to go through a dedicated screening lane at the airport where you may not need to remove your shoes, jacket, belt, or laptop from your bag. TSA PreCheck is also available if you're enrolled in a Customs and Border Protection (CBP) Trusted Traveler program, including Global Entry, SENTRI, or NEXUS.
If you have a KTN, you can add it to your airline reservation to ensure the TSA PreCheck indicator appears on your boarding pass. This can be done in a few ways. Firstly, you can log in to your airline account and add your KTN to your profile. This will automatically add it to future bookings. Alternatively, you can add your KTN to individual reservations by editing your passenger information. This can usually be done online, either on the airline's website or app, or by calling the airline's customer service. If you are flying with Delta, you can log in to your Delta SkyMiles account to add your KTN, which will automatically populate your reservation with your personal information. If you are flying with American Airlines, you can add your KTN by clicking on "Manage Trip" and then "Add/Edit Passenger Information".
If you have added your KTN after checking in, you will need to get a new boarding pass. If you are an AAdvantage member, you can opt in to use TSA PreCheck Touchless ID, which allows you to verify your ID using facial recognition instead of your boarding pass or ID.
If you have added your KTN but do not see the TSA PreCheck indicator on your boarding pass, you can reach out to the TSA for assistance. They can be contacted through Twitter (@AskTSA), Facebook Messenger, Apple Business Chat, or by texting "Travel" to 275-872. You can also call the TSA Contact Center at (866) 289-9673 or fill out an online form.
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Frequently asked questions
You can add KTN to a new reservation by logging into your airline loyalty program account, which will automatically populate your personal information. If you don't have an account or are not logged in, you can add your Known Traveler Number manually during the booking process when entering your passenger information.
Yes, you can add KTN to an existing reservation by updating your passenger details on the airline's website. You can also call the airline's customer service to have them update your information.
If you add KTN after checking in, you will need to get a new boarding pass.













