Flights to San Francisco started in 1969, but were stopped by 1980. On May 1, 1986, Pacific Southwest Airlines (PSA) started flights from Buchanan Field to Los Angeles International Airport. PSA offered several round trips each day using airplanes that had 100 seats. In 1987, USAir took over those flights after buying PSA. That year, USAir said that it was stopping most of the West Coast flights that it got from PSA. This included Concord, where flights ended in 1992.