Multiple flights were cancelled Monday morning, November 9, 2026, at London’s Heathrow and London City airports due to dense fog. By 6:30 a.m., seven flights from Heathrow and three from London City had been called off, affecting key London hubs.
Yellow Weather Warning and Reduced Visibility Due to Fog
A yellow weather warning issued by the Met Office was active until 11 a.m., covering London and most of the South East. The fog reduced visibility to 50 metres or less. Met Office operational meteorologist Niamh Murray explained the weather conditions: “With autumn and winter and getting fog during this time of year, we get much longer nights, and that
allows temperatures to fall away. We get a longer period of cooling and also the temperatures are much lower, so they’re much closer to the temperature that we need for the air to become saturated and therefore form fog.” The light winds and clear skies contributed to the dense fog lingering into the morning.
Impact on Flights and Travel Conditions
The thick fog caused disruption at the two major London airports, with a total of ten flights cancelled before 7 a.m. Travelers faced delays and cancellations on routes to and from Heathrow and London City airports. The poor visibility also affected road travel conditions across the
region.
Official Safety Advice and Related Road Incident
AA president Edmund King advised drivers to adapt their speed, maintain increased distance, avoid following the rear lights of preceding vehicles, and allow extra travel time. He stated, “Fog can transform a familiar road in a matter of minutes, so drivers need to be prepared to adapt their speed and leave more room between themselves and the vehicle ahead.” The seriousness of fog-related hazards was exemplified by a collision involving over 30 vehicles on the M20 motorway in Kent between junctions 8 and 9 on Saturday evening. The crash, which occurred under foggy conditions, resulted in the motorway closing
for nearly 12 hours and left two people seriously injured.
