On August 9, 2026, severe thunderstorms forced FAA ground stops at Chicago O’Hare and Midway airports, making O’Hare the most-delayed airport globally that day; United Airlines canceled roughly five times more flights than American. By August 11, arrival delays had fallen to about 15 minutes, indicating recovery.
The FAA issued updates throughout the event at faa.gov. Major weather disruptions like these can have cascading effects on infrastructure nationwide. For context on storm-driven disruptions, see reports on storm-driven disruptions affecting other regions.