The REAL ID Act, passed by Congress in 2005, requires US travelers flying domestically to show TSA agents either a security-enhanced driver's license or ID card or another TSA-approved form of identification, such as a passport.

As of February 1, 2026, the TSA has implemented strict new identity requirements for U.S. air travel. The primary proof of identity is a REAL ID-compliant license (marked with a star) or a U.S. Passport. If you arrive at the airport without an acceptable ID, the TSA now offers a paid alternative called TSA ConfirmID. This service costs $45 and involves a 10-minute digital verification process to attempt to confirm your identity via public records. Other acceptable IDs in 2026 include Global Entry cards, permanent resident cards, and federally recognized tribal photo IDs. Children under 18 traveling with an adult on domestic flights still do not require a photo ID, but for all adults, having a REAL ID or Passport is now the only way to avoid the new "identity verification fee" and potential delays.