Chicago O’Hare International Airport encountered a substantial number of flight disruptions on June 21, 2026, with a total of 340 flights delayed and 9 flights cancelled. These interruptions significantly affected air travel operations at one of the country’s busiest hubs on that day.
The disruptions involved multiple airlines including United Airlines, Republic Airlines, American Airlines, and Jazz Aviation. Flights affected by the delays and cancellations serviced routes across the United States as well as international destinations such as Canada, Germany, France, and Japan.
