United Airlines will begin service from L.A./Palmdale Regional Airport to San Francisco on June 7, officials announced Monday. It will mark the return of commercial passenger service to the terminal adjacent Air Force Plant 42, following a brief period of limited service that ended a year ago. The twice-daily roundtrip flights will provide passengers with connections to more than 200 United domestic flights from the airline's San Francisco hub, as well as numerous flights throughout Asia, Mexico, Canada, London and Sydney, United spokeswoman Robin Urbanski said. Los Angeles World Airports, the city agency that owns and operates the Palmdale, Los...