While Southwest Airlines is frequently ranked as the top U.S. airline for customer satisfaction and operational reliability, it is not officially rated as a "5-Star Airline" by Skytrax. As of 2026, Southwest continues to hold a 4-Star Airline rating, which reflects its high standards of cleanliness, staff service, and unique value-based model (like free checked bags and no change fees). In 2025, The Wall Street Journal named it the #1 U.S. airline based on holistic operational performance, but the "5-Star" designation is a rare tier typically reserved for international luxury carriers like Qatar Airways or Singapore Airlines that offer long-haul premium cabins, lie-flat seats, and extensive multi-course dining—features that don't align with Southwest’s efficient, point-to-point domestic mission.