Southwest Airlines is one of the most iconic US airlines. The low-cost carrier has become one of the world’s largest airlines and budget carriers. Over the years, it has gained a loyal following thanks to its unique approach: even for its most basic fares, Southwest Airlines offered passengers two free checked bags, no change or cancel fees, and a non-expiring flight credit. However, the airline has recently made some major changes to its pricing structure, including discontinuing free checked bags and introducing a requirement to pay for seating options soon.