I believe it must be a state issued drivers license or ID card, or a military ID card, or a passport. I use my license.
Best to check TSA website
Go to TSA. Gov to find out.
Adult passengers 18 and over must show valid identification at the airport checkpoint in order to travel. Driver's licenses or other state photo identity cards issued by Department of Motor Vehicles (or equivalent)U.S. passportU.S. passport cardDHS trusted traveler cards (Global Entry, NEXUS, SENTRI, FAST)U.S. Department of Defense ID, including IDs issued to dependentsPermanent resident cardBorder crossing cardDHS-designated enhanced driver's licenseFederally recognized, tribal-issued photo IDHSPD-12 PIV cardForeign government-issued passportCanadian provincial driver's license or Indian and Northern Affairs Canada cardTransportation worker identification credentialU.S. Citizenship and Immigration Services Employment Authorization Card (I-766)U.S. Merchant Mariner Credential
Web search for acceptable ID is beat bet.
Best to check online
Look at their website, it mentions which are considered valid forms of ID they allow.
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