Over 900 flights were grounded on June 30, 2026, at London Heathrow and Gatwick due to severe thunderstorms. The weather caused extensive cancellations and delays affecting thousands of travelers.
Chicago O’Hare Airport experienced extensive delays and cancellations on June 30, 2026, with over 300 flights delayed. Airlines affected included SkyWest, Republic, and United Airlines.
On June 30, 2026, 55 flight cancellations and 638 delays were reported at major US airports including JFK and Boston Logan. Disruptions affected JetBlue, Delta, and American Airlines and routes to key international destinations.