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.

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

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.

Thousands of passengers at Gatwick Airport are facing delays for a fourth day in a row after severe fog led to widespread disruption over the Christmas period. More than 20 flights set to leave the airport today have been cancelled in advance while passengers have been told to expect delays.

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.

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. Nats, the UK’s main air traffic control provider, said temporary air restrictions were in place for the remainder of the day because of low visibility in airfields affected by fog.

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.

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.

Disruption caused by thick fog is expected to continue at some airports around London on Sunday. Flights at Stansted Airport were affected by the weather conditions on Saturday, while live departure boards showed delays at Heathrow, Luton and Manchester Airports.