It depends on where is the plane flying. The previous answers are valid for domestic flights. A driver's license won't get you very far for international flight. You may also need visa for some countries.
Govt issued ID: Drivers License, Passport, State ID Card -- must have a photo and be issued by the State or Federal Government
A driver's license is sufficient for domestic flights until October 2020. After that point a RealID updated driver's license is required or a passport. RealID must be obtained in person at the DMV.
passport, boarding pass
Government issued License/passport, boarding pass
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