Southwest’s Boeing 737-700s: What Are The Type’s Top Routes At The Carrier?

Southwest Airlines started operating Boeing 737s on June 18, 1971, to serve three cities in Texas: Houston, Dallas, and San Antonio. By 1989, the airline had inched past the billion-dollar revenue mark, making it a significant player in the airline industry. This low-cost carrier, headquartered in Dallas, Texas, already operates in 121 cities across the United States of America.