Severe thunderstorms on June 30, 2026, resulted in the grounding of over 900 flights across London’s two busiest airports, Heathrow and Gatwick. The intense weather caused significant disruption to flight operations throughout the day.
Both Heathrow and Gatwick experienced widespread cancellations and delays due to the adverse conditions. Thousands of passengers were affected as airlines adjusted schedules in response to the violent summer storms impacting southern England.
