Southwest Airlines base in Dallas Love Field, Texas is the worlds largest low cost airline. The airline was established last 1967 where they started operating Boeing 727 and Boeing 737.

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Southwest is the preferred airline of Americans and is actually a good move for the company because they provide two check-in bags free of charge as well as offering complimentary non-alcoholic drinks and snacks. Most of their hubs are base in Dallas Love Field, Chicago Midway, Houston Hobby, Los Angeles, Las Vegas, Orlando FL., Baltimore-Washington DC, Denver CO., Phoenix TX., Atlanta GA.,  andNashville TN.

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As of 2017, Southwest has a total of 723 aircraft composed of Boeing 737-300, 737-700, and 737-800.