Your Known Traveler Number is on your TSA PreCheck or Global Entry approval letter and in your online trusted traveler account.
Where to find it
Your Known Traveler Number (KTN) is a 9-digit number. For TSA PreCheck, it starts with TT. For Global Entry, it’s your PASSID.
Find it in
- Your approval letter or email.
- Your online account: Global Entry/TTP at ttp.cbp.dhs.gov, or the TSA PreCheck enrollment provider (IDEMIA, Telos).
- Your Global Entry card (PASSID on the back).
Use
Enter it in your airline reservation, loyalty profile or airline app so PreCheck appears on your boarding pass.
Lost
Contact TSA Contact Center at 866-289-9673.
Validity
5 years.
Tip
Add to each booking.
Known Traveler Number types
- The number is also called PASSID, KTN or Trusted Traveler number.
- It is 9 characters long, and it often starts with TT or the digits of the program.
- Global Entry, NEXUS, SENTRI and TSA PreCheck each issue one.
Enter it in your reservation
Add the number in the “Known Traveler Number” box when booking, in the airline profile or in the traveler details. It must match the name on the reservation exactly.
If PreCheck is not on the boarding pass
- Check that the name, date of birth and number match your enrollment.
- Contact the airline to add the number.
- Check whether your flight and airline take part in PreCheck. Most major airlines do.
Where it applies
PreCheck is available at more than 200 US airports and with over 90 airlines according to TSA. Global Entry members also get PreCheck.
Cost
TSA PreCheck costs about 78 dollars for 5 years, and Global Entry is 120 dollars for 5 years. Check current fees on the official site.
Children
Children 12 and under can use PreCheck lanes with a parent who has it. Teens 13 to 17 can use it with a parent if they are on the same reservation.
Security
Never share the number on social media, because it can be linked to your personal data.
Trusted traveler programs and numbers
A Known Traveler Number (KTN) is a unique number issued by TSA or Customs and Border Protection that identifies you in a trusted traveler program. TSA PreCheck numbers usually start with TT, and Global Entry numbers are nine digits. The KTN is printed on the Global Entry card, the PreCheck approval letter, the NEXUS or SENTRI card, and is available in your Trusted Traveler Programs account at ttp.dhs.gov. TSA PreCheck costs 78 USD for 5 years if you apply online or in person with the standard enrollment, and Global Entry costs 120 USD for 5 years and includes PreCheck. Children age 12 and under can use the PreCheck lane when traveling with a parent or guardian who has it.
Adding the number to a trip
Enter the KTN in the field labeled Known Traveler Number or TSA PreCheck on your airline reservation, the frequent flyer profile or at check in. Each airline needs it separately. Check that your name and date of birth match exactly what you used on your application. If the boarding pass does not show the PreCheck indicator, contact the airline to add the number. Not all airlines or flights participate, although over 90 airlines take part in PreCheck. The TSA says the program is not guaranteed on every trip, because some travelers are randomly selected for standard screening. TSA also reports that most PreCheck travelers wait less than 10 minutes.
Based on data from the TSA and US Customs and Border Protection
