Adult passengers (18 and over) are required to show a U.S. federal or state-issued photo ID in order to be allowed to go through the checkpoint and onto their flight.
We understand passengers occasionally arrive at the airport without an ID, due to lost items or inadvertently leaving them at home. Not having an ID, does not necessarily mean a passenger won't be allowed to fly. If passengers are willing to provide additional information, we have other means of substantiating someone's identity, like using publicly available databases.
Passengers who are cleared through this process may be subject to additional screening. Passengers whose identity cannot be verified by TSA may not be allowed to enter the screening checkpoint or onto an airplane.
Acceptable IDs include:
Non-US/Canadian citizens are not required to carry their passports if they have documents issued by the U.S. government such as Permanent Resident Cards. Those who do not should be carrying their passports while visiting the U.S.
This standardization of the list of accepted documents better aligns TSA with other DHS components, including Customs and Border Protection, and REAL ID benchmarks.