United Airlines is Southwest's biggest rival. United Airlines was founded in 1926, and is headquartered in Chicago, Illinois. Like Southwest, United Airlines also works within the Passenger Airlines & Freight sector. United Airlines generates $29.6B more revenue vs. Southwest.
American Airlines is one of Southwest's top competitors. American Airlines's headquarters is in Fort Worth, Texas, and was founded in 1926. Like Southwest, American Airlines also works within the Passenger Airlines & Freight sector. American Airlines generates 197% of Southwest's revenue.