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.

Travellers face further disruption at UK airports including Gatwick, Heathrow and Manchester due to thick fog which is set to persist today says the Met Office

More than 1,000 flights were delayed at London Heathrow and Gatwick on Friday as fog created travel chaos for UK airports.

Over 100 flights from Heathrow were cancelled due to bad weather on Sunday, with another 80 expected to face severe delays throughout today – mostly short-haul domestic flights

Travelers flying to or from the U.K. faced further disruptions Saturday as thick fog and low visibility restricted air traffic on one of the year's busiest weekends. Gatwick Airport in London warned that some flights may be delayed throughout Saturday and apologized for the inconvenience.

Flight restrictions remain in place at Gatwick Airport for a fourth day because of fog, disrupting travel plans for thousands of passengers.

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.

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.

Thick fog has stopped flights from taking off on one of the busiest travel days of the year. Flights from Gatwick airport have been delayed and cancelled over the last two days due to low visibility.