Southwest Airlines (USA)
- Country: United States
- Type: Transportation
- Website: www.southwest.com
- Update: 05-01
Southwest Airlines (USA) is the originator of low-cost airlines in the civil aviation world and the second largest airline in the United States in terms of passengers carried. Founded on June 18, 1971, the airline is headquartered in Dallas, Texas, and its key airports are Dallas Love Field Airport, Houston Hobby Airport, Nashville International Airport, and Las Vegas McCarran International Airport.