 Trans Sierra Airlines, a commuter air carrier, was serving the airport in 1971 with four daily flights to Los Angeles (LAX) and two daily flights to San Jose (SJC) operated with Cessna 402 twin prop aircraft.Trans Sierra then changed its name to Sierra Pacific Airlines which in 1972 was operating 44-passenger seat Convair 440 propliner service to Los Angeles (LAX) and Burbank (BUR).By the mid 1970s, Sierra Pacific Airlines was operating nonstop flights to Los Angeles (LAX), Las Vegas (LAS), Reno (RNO) and Fresno (FAT) as well as one stop direct service to Burbank (BUR) with Convair 580 turboprops and Handley Page Jetstream commuter propjets.