Southwest Airlines is generally considered a high-quality choice for domestic travel, though it is currently undergoing the most significant identity shift in its 50-year history. Traditionally beloved for its "Bags Fly Free" policy and open-seating "cattle call," the airline has officially transitioned to a traditional assigned-seating model as of January 2026. This change has been met with mixed reviews; while many travelers appreciate the predictability of a reserved seat, others have noted slower boarding processes as passengers navigate the new group system. Despite these growing pains, Southwest maintains a strong reputation for customer service and operational reliability, frequently ranking near the top of industry lists for on-time performance. They continue to offer a more generous change and cancellation policy than most "legacy" carriers, allowing for no-cost adjustments up to 10 minutes before departure. If you value friendly staff, the ability to check two bags for free, and a robust network of secondary airports, Southwest remains a top-tier option, provided you are comfortable with their modernized, more "mainstream" boarding and seating procedures.