An arrivals board at Heathrow Terminal 5 showing some delayed and cancelled flights. Picture: Steve Parsons/PA Wire

Further cancellations at Heathrow are inevitable because of the weather, a spokesman for the airport has said.

Hundreds of flights at the airport have been cancelled since Friday, many because of low visibility due to the snow.

A spokesman for Heathrow said: “The airfield at Heathrow is fully operational with all runways, taxiways and stands clear.

“The schedule for today has been reduced by 10 per cent in order to cope with the low visibility conditions expected from 4pm this afternoon.

“Low visibility means that, for safety reasons, there needs to be a bigger gap between aircraft.

“Because Heathrow runs at almost 100 per cent capacity there is no slack in the system and flights unfortunately have to be cancelled.

“Further cancellations are inevitable given the adverse weather conditions at other airports around Europe.”

Heathrow has more than 200 extra customer services staff working at the airport today to help passengers, and is asking people to check the status of their flight with their airline before they leave for the airport.