Southwest Airlines Co

Southwest Airlines flies passengers across the U.S. (and select international destinations) using an all-Boeing 737 fleet of roughly 800 planes. Revenue comes from ticket sales, ancillary fees, and a co-branded credit card program. The airline has historically targeted leisure travelers with low fares, open seating, and a point-to-point route network rather than a hub-and-spoke model. It is transitioning away from its longtime open-seating model toward assigned seats and tiered fare categories—including a basic economy option—to better compete with legacy carriers and gain visibility on travel aggregator platforms.