Pacific Air Lines was a regional airline (then called a "local service" air carrier as defined by the federal Civil Aeronautics Board) on the West Coast of the United States which began scheduled passenger operations in the mid 1940s under the name Southwest Airways. The company was essentially a feeder airline, primarily linking smaller communities in California with larger cities such as Los Angeles and San Francisco. Flights were also operated to Portland, Oregon and eventually reached Las Vegas and Reno in Nevada.