Poor visibility caused by thick fog is disrupting flights across the UK for a second day
Heathrow airport said around 45 flights had been cancelled, and others affected include London City, Manchester, Leeds Bradford, Glasgow and Cardiff, BBC reported.
The fog descended as the UK recorded its hottest November day with a temperature of 22.4C (72.3F) being reached in mid Wales. The Met Office has issued a yellow weather warning for England and Wales with foggy conditions expected to make driving conditions slow.
Foggy conditions in Europe are also having a knock-on effect on UK flights.
The Met office said: “Visibility will be poor, below 100m at times and the fog will last through the morning rush causing hazardous conditions and further potential disruption.”
Drivers are advised to slow down, keep their distance from the vehicle in front and use the correct lights.
British Airways said it was expecting cancellations at many UK airports.
“The airport authorities and air traffic control have again requested airlines to reduce their schedules on Monday to maintain safety… If your flight has been cancelled please do not travel to the airport,” a statement said.
A spokeswoman for Heathrow airport said there would be extra passenger ambassadors in the terminals to provide assistance for those travelling.
The fog may linger into the afternoon for some eastern parts of England and southern Scotland.