Known Traveler Number (KTN)

Use of Known Traveler Number

The KTN can be added to a flight reservation at the time of booking or later when managing the reservation. This automatically assigns the traveler to the expedited security screening lane. As a result, passengers with a KTN are often not required to remove shoes, belts, or electronics during security checks.
The number is linked to the passenger’s travel profile and verified through airline and security databases. Its use integrates the traveler’s information with airport procedures, further improving the efficiency of the screening process.

Programs connected with Known Traveler Number

A KTN is issued as part of several Trusted Traveler Programs, including:

• TSA PreCheck – expedited security screening at U.S. airports,

• Global Entry – faster immigration clearance upon arrival in the United States from abroad,

• NEXUS – designed for frequent travelers between the U.S. and Canada,

• SENTRI – for travelers who regularly cross the U.S.–Mexico border.

Each of these programs offers additional benefits but is linked to the issuance of one common Known Traveler Number, which must be used in flight reservations. These programs were created to make travel more efficient while maintaining a high level of security. A shared feature of all programs is the thorough vetting of participants before assigning a KTN.

Importance of Known Traveler Number for travelers

Having a KTN greatly improves the travel experience by allowing faster passage through security checkpoints. In practice, this means shorter lines, less stress, and more predictability when planning flights.

The number is also important from a security standpoint, as it is issued only after a detailed background check of the traveler. This allows airport authorities to distinguish verified passengers from those who must undergo standard screening.

Summary

The Known Traveler Number (KTN) is a unique identification number granted to participants of expedited security programs such as TSA PreCheck and Global Entry. Its use helps travelers save time and benefit from simplified airport procedures. It has become one of the most valuable tools for frequent travelers within the U.S. and beyond.

With the KTN, the security system gains an effective tool for managing passenger flow. At the same time, passengers benefit from greater flexibility and a smoother travel experience.

👉 If you plan frequent travel to or within the United States, make sure you have a Known Traveler Number. Use our online form at uspassportapplicationonline.com to prepare your documents correctly and take advantage of expedited security programs.