The Falcon 9 rocket lifted off from Vandenberg Space Force Base in Santa Barbara County before 12:30 a.m. Sunday.
It delivered 23 Starlink satellites to orbit. The rocket's first stage booster later landed on a SpaceX droneship.
SpaceX is also set to launch a cargo craft toward the International Space Station. The launch from Florida is set for 8:02 a.m. Sunday.