On June 30, 2026, more than 900 flights were grounded at London Heathrow and Gatwick airports following the onset of intense summer thunderstorms across the region. The disruptions affected two of the UK’s busiest airports and led to significant interruptions in scheduled air traffic throughout the day.
Flight Disruptions Triggered by Severe Weather
The violent thunderstorms that swept over London caused extensive cancellations and delays, creating challenges for thousands of passengers at both Heathrow and Gatwick. The weather conditions forced airport authorities and airlines to suspend or postpone numerous departures and arrivals as a safety precaution amid the storm.
These disruptions contributed to widespread travel difficulties
on June 30, with the storm-related flight groundings impacting operations at both major London airports.
