Southwest Airlines (LUV -2.11%) was the original discounter, but it is now one of the industry titans and no longer a maverick start-up. The Dallas-based airline remains the only major carrier never to land in bankruptcy court, and its streamlined operations have a track record of profitability even when rivals struggle.
Southwest's pristine reputation has taken a few hits in recent years. The airline had a high-profile schedule meltdown during the 2022 holiday season, and issues with its aging IT infrastructure led to another systemwide grounding of planes in 2023. The company was the target of activist pressure in 2024, which led Southwest to modernize its systems, begin assigning seats, and add fees for checked bags.
But even if this is not the Southwest of old, the airline is, by and large, a reliable operator that remains a cost leader. It also has the industry's best balance sheet, making it an investor favorite for its resilience.