Disruption is continuing at Gatwick Airport for a fourth day after heavy fog affected flights in one of the busiest periods of the year. Some restrictions due to adverse weather remain in place, the airport said.

Flight restrictions remain in place at Gatwick Airport for a fourth day because of fog, disrupting travel plans for thousands of passengers. More than 20 flights planned for the West Sussex airport on Monday were cancelled in advance and passengers are being warned of delays throughout the day.

Flights to everywhere from Belfast and Tenerife to Kraków, Poland, and Accra, Ghana, have been delayed by as much as an hour and a half this morning. Live arrivals boards also show slight delays to incoming flights. According to the monitoring website FlightStats, the delays are ‘excessive and increasing’.

Fog is continuing to disrupt flights at Gatwick Airport with restrictions imposed to maintain safety. On what is expected to be the airport's busiest day of the Christmas period, it said some flights "may be delayed throughout the day" due to "poor visibility" and apologised to customers.

Between Boxing Day and Sunday, of the 29 flights to Gatwick, 10 were cancelled and many of the rest of the flights were heavily delayed due to fog at Guernsey and later around Gatwick, which was particularly badly affected on Sunday.

It follows two days of disruption at the UK’s busiest airports, with Saturday’s flights at Stansted Airport affected by the murky conditions, while live departure boards showed delays at Heathrow, Luton, Gatwick and Manchester Airports.

Tens of thousands of passengers have had their Christmas travel disrupted in recent days as thick fog has descended on airports.

Poor weather is disrupting services at Gatwick Airport with a number of easyJet flights "now unable to operate as planned", the airline has said with delays in place this evening

Disruption caused by thick fog is expected to continue at Gatwick Airport until the end of the day on Sunday, the airport’s busiest day of the holiday period. At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

More than 20 flights in and out of Gatwick airport were cancelled in advance of Monday (30 December) due to the knock-on effect from poor weather

More than 20 flights planned for the West Sussex airport on Monday were cancelled in advance and passengers are being warned of delays throughout the day.