The Federal Aviation Administration (FAA) imposed a ground stop at O’Hare International Airport in Chicago, USA, on September 17, 2026. The halt lasted nearly two hours, suspending all flight operations at the airport during this period.
O’Hare International Airport recorded the highest number of flight cancellations globally on the same day. The stoppage disrupted schedules across multiple airlines, leading to widespread cancellations and operational disturbances at the airport.
