Passengers must show a REAL ID or an acceptable alternate form of ID, like a passport. A state-issued driver’s license or ID that is not REAL ID-compliant will not be accepted by the Transportation Security Administration (TSA) as a valid form of identification at airport security checkpoints.

Passengers who do not have acceptable identification can expect to face delays, additional screening and the possibility of not being allowed past the security checkpoint.

For travelers who don’t have a REAL ID or passport, TSA accepts several other forms of identification documents. Travelers can find a full list of acceptable alternate identification online at tsa.gov. The list is subject to change by TSA at any time, so passengers are encouraged to check online before they travel.