Travellers from London airports faced further delays a day after fog grounded 140 flights and left more than 1,000 people stranded overnight at Heathrow.
Travellers from London airports faced further delays a day after fog grounded 140 flights and left more than 1,000 people stranded overnight at Heathrow.
The airport has cancelled 29 flights as a knock-on from Sunday's problems but said the situation would improve later because the fog had already lifted.
The airport has cancelled 64 flights as a knock-on from Sunday's problems but said the situation would improve later because the fog had already lifted.
Gatwick has cancelled six incoming and six outgoing flights, while London City has cancelled six outgoing ones.
Gatwick has cancelled seven incoming and seven outgoing flights. London City has cancelled six outgoing flights.
Passengers are being urged to check with their airport before travelling.
Passengers are being urged to check with their airport before travelling.
Stranded for Christmas
Stranded for Christmas
On the railways, more than 200 passengers are stranded on the overnight sleeper from Euston to Inverness at Carstairs near Glasgow, after the train hit what Network Rail described as "material" on the track.
On the railways, more than 200 passengers are stranded on the overnight sleeper from Euston to Inverness at Carstairs near Glasgow, after the train hit what Network Rail described as "material" on the track.
On the roads, the low visibility had caused accidents and tailbacks on Sunday as people attempted to drive home for Christmas, but both the RAC and the AA said the roads were now quiet without any major accidents.
On the roads, the low visibility had caused accidents and tailbacks on Sunday as people attempted to drive home for Christmas, but both the RAC and the AA said the roads were now quiet without any major accidents.
The flights cancelled from Heathrow on Monday were due to depart from terminals one and four to destinations including Newcastle, Dublin, Glasgow, Edinburgh, Aberdeen, Paris, Barcelona, Rome and New York.
The flights cancelled from Heathrow on Monday were due to depart from terminals one and four to destinations including Newcastle, Dublin, Glasgow, Edinburgh, Aberdeen, Paris, Barcelona, Rome and New York.
BA's flights are at capacity now, so we're actually telling people to leave - we're giving them vouchers to stay in hotels Greg Ward, operations director, BA
BA's flights are at capacity now, so we're actually telling people to leave - we're giving them vouchers to stay in hotels Greg Ward, operations director, BA
An airport spokesperson said the flights were all due to leave by 1400 GMT.
An airport spokesperson said the flights were all due to leave by 1400 GMT.
But Greg Ward, operations director for BA at Heathrow Airport, said all of the airline's flights were now booked, and perhaps as many as 200 people would have to spend Christmas in hotels.
But Greg Ward, operations director for airport operator BAA at Heathrow, said perhaps as many as 200 people would have to spend Christmas in hotels.
He told BBC News: "BA's flights are at capacity now, so we're actually telling people to leave - we're giving them vouchers to stay in hotels - and to re-book online or over the phone."
He told BBC News: "BA's flights are at capacity now, so we're actually telling people to leave - we're giving them vouchers to stay in hotels - and to re-book online or over the phone."
Mr Ward said their chances of even getting home on Christmas Day on a BA flight were slim, and that many were taking flights with other airlines.
Mr Ward said their chances of even getting home on Christmas Day on a BA flight were slim, and that many were taking flights with other airlines.
He said: "People are obviously upset...but actually in fairness a lot of people understand it's not got anything to do with the airlines or the airport."
He said: "People are obviously upset...but actually in fairness a lot of people understand it's not got anything to do with the airlines or the airport."
The only thing I could get was from the vending machine. So I had a hard floor and a bag of crisps Andrew Coiley, passenger stranded at Heathrow
The only thing I could get was from the vending machine. So I had a hard floor and a bag of crisps Andrew Coiley, passenger stranded at Heathrow
But two of the 1,000 people stranded at Heathrow overnight were extremely unhappy with the lack of facilities made available to them.
But two of the 1,000 people stranded at Heathrow overnight were extremely unhappy with the lack of facilities made available to them.
Andrew Coiley, on his way home from Seoul to Belfast, had his connecting flight cancelled and spent the night on the floor of Terminal 1.
Andrew Coiley, on his way home from Seoul to Belfast, had his connecting flight cancelled and spent the night on the floor of Terminal 1.
He told BBC News: "By that time there was nothing to eat. The only thing I could get was from the vending machine. So I had a hard floor and a bag of crisps."
He told BBC News: "By that time there was nothing to eat. The only thing I could get was from the vending machine. So I had a hard floor and a bag of crisps."
Another stranded traveller was Tibor Mezei, from Hungary.
Another stranded traveller was Tibor Mezei, from Hungary.
I'm here with luggage and a two-year-old, and honestly there's been zero information Tibor Mezei, passenger stranded at Heathrow
I'm here with luggage and a two-year-old, and honestly there's been zero information Tibor Mezei, passenger stranded at Heathrow
It is the second Christmas Eve in a row he has been stuck at Heathrow, on both occasions he has been on his way from Los Angeles to Budapest.
It is the second Christmas Eve in a row he has been stuck at Heathrow, on both occasions he has been on his way from Los Angeles to Budapest.
He told BBC News: "It's just unbelievable. No-one can give me instructions. I'm here with luggage and a two-year-old, and honestly there's been zero information."
He told BBC News: "It's just unbelievable. No-one can give me instructions. I'm here with luggage and a two-year-old, and honestly there's been zero information."
At London City Airport, the website listed one cancellation to Edinburgh, with the five others to European destinations.
At London City Airport, the website listed one cancellation to Edinburgh, with the five others to European destinations.
Gatwick Airport said six outgoing domestic and short-haul flights have been cancelled, in addition to six incoming flights.
Gatwick Airport said six outgoing domestic and short-haul flights have been cancelled, in addition to six incoming flights.
Stansted Airport reported being very busy, but with only minor delays.
Stansted Airport reported being very busy, but with only minor delays.
Passenger bottle-neck
Passenger bottle-neck
Airports across other parts of the UK were also largely keeping flights on schedule.
Airports across other parts of the UK were also largely keeping flights on schedule.
Bristol Airport was extremely busy, but with flights getting away on time, and there were no major delays or cancellations at Birmingham International Airport or East Midlands Airport.
Bristol Airport was extremely busy, but with flights getting away on time, and there were no major delays or cancellations at Birmingham International Airport or East Midlands Airport.
There were no delays or cancellations reported at Cardiff International Airport or Belfast International Airport.
There were no delays or cancellations reported at Cardiff International Airport or Belfast International Airport.
However Manchester Airport said two BA flights were cancelled earlier due to the repercussions of cancellations around London.
However Manchester Airport said two BA flights were cancelled earlier due to the repercussions of cancellations around London.
Four flights were also cancelled from Edinburgh Airport for the same reasons - two destined for Heathrow, one for London City Airport and one for Birmingham.
Four flights were also cancelled from Edinburgh Airport for the same reasons - two destined for Heathrow, one for London City Airport and one for Birmingham.
Improving conditions
Improving conditions
Glasgow Airport had one flight cancelled in the morning, also to Heathrow. There were no other delays at either airport, a spokeswoman said.
Glasgow Airport had one flight cancelled in the morning, also to Heathrow. There were no other delays at either airport, a spokeswoman said.
A Heathrow spokeswoman said the knock-on delays are caused by a combination of the backlog of passengers waiting to board flights, and the fact that when a plane is unable to leave an airport, the plane scheduled to arrive behind it is held at the airport it was due to depart from.
A BAA spokesman said the cancellations on Monday were the result of aircraft and crew being in the wrong places following the problems caused by the fog.
After Sunday's cancellations, airlines said they had offered customers alternative flights or refunds.
After Sunday's cancellations, airlines said they had offered customers alternative flights or refunds.
Forecasters are expecting the treacherous conditions to ease as the fog continues to clear, giving way to milder, wetter weather over the coming days - with rain likely across the UK.
Forecasters are expecting the treacherous conditions to ease as the fog continues to clear, giving way to milder, wetter weather over the coming days - with rain likely across the UK.
Have you been caught up in delays? Are you stuck at an airport? What are you planning to do as a result?
Have you been caught up in delays? Are you stuck at an airport? What are you planning to do as a result?
