"Effective January 22, 2018, air travelers with a driver’s license or identification card issued by a state that does not meet the requirements of the REAL ID Act (unless that state has been granted an extension to comply with the Act) must present an alternative form of identification acceptable to the Transportation Security Administration (TSA) in order to board a commercial domestic flight."

https://travel.state.gov/content/passports/en/news/real-id-not-needed-for-domestic-flights-until-2018.html