Fog was affecting flights from airports in the south of England this morning.
Heathrow, London City and Southampton airports were all suffering from heavy flight delays due to the bad weather. Eurocontrol described the conditions as “not good”.
Heathrow said 40 flights had been cancelled this morning.
London City said: “Due to low visibility this morning flights to/from the airport are experiencing disruptions.”
Passengers were advised to call their airlines for more information.
The fog is expected to clear at 10am.