According to 2025 U.S. Department of Transportation data, United Airlines has a slightly higher "mishandled baggage" rate compared to Delta and Southwest, often recording roughly 6 to 7 mishandled bags per 1,000 passengers. While "losing" a bag forever is rare (less than 7% of missing bags are never found), "mishandling" includes delays, damage, or pilferage. United’s higher rate is often attributed to the complexity of its major "hub-and-spoke" networks in cities like Chicago (ORD), Newark (EWR), and Denver (DEN), where short connection times and severe winter weather increase the risk of a bag not making it onto a connecting flight. In 2026, United has heavily promoted its real-time bag tracking in the mobile app to give passengers peace of mind. While the statistics might look concerning, the vast majority of "lost" bags on United are actually just "delayed" and are reunited with their owners within 24 to 48 hours.