United Airlines, along with several other major U.S. carriers, experienced significant operational disruptions on November 27, 2025, amidst a wave of nationwide travel difficulties. A total of 53 flights were canceled and 1,318 were delayed across major airports in states including Illinois, Colorado, and New York. The chaos particularly impacted Chicago O'Hare International Airport, a major hub for United. United Airlines specifically saw a notable number of disruptions across its network. At Chicago O'Hare, the airline recorded 2 cancellations and 167 delays. At another of its key hubs, Newark Liberty International Airport, United faced 3 cancellations and 38 delays. These issues contributed to frustrating travel plan changes for thousands of passengers, highlighting significant strain on the national air traffic system.