Southwest Airlines Co. (LUV) is a major passenger airline known for its extensive domestic network and near-international service. The company operates scheduled air transportation across the United States and to several nearby international destinations with a uniform fleet of Boeing 737 aircraft, while also offering ancillary services such as loyalty programs and online travel tools. Southwest is headquartered in Dallas, Texas, and has a market cap of around $21.5 billion. Shares of this leading airlin ...