As of early 2026, the cost to obtain a TSA Known Traveler Number (KTN) through the TSA PreCheck® program is $78 for a five-year membership when applying in person at an enrollment center. If you choose to renew your membership online after the initial five years, the high-value "pro-tip" is that the price drops to $70. Alternatively, many travelers opt for Global Entry, which costs $120 but includes a KTN for PreCheck plus expedited customs processing when returning to the U.S. from abroad. A new 2026 update to be aware of: if you lack a REAL ID-compliant license and need to use the "TSA ConfirmID" service at the checkpoint, there is a separate $45 verification fee. For most frequent flyers, the $78 investment for PreCheck is considered essential, as it allows you to keep your shoes on and electronics in your bag, significantly reducing the time and friction of the airport security experience.