CHRISTMAS TRAVEL CHAOS CONTINUES !

Restrictions have been put on flights because of poor visibility. Christmas travellers are enduring a third day of misery as thick fog causes more flight cancellations and delays.
More than 300 flights have been cancelled at Heathrow, including all British Airways domestic flights, with 40,000 people expected to be affected.
BA said it planned to start operating domestic services to and from Heathrow from noon on Saturday.
Train firms have laid on extra services to cope and the roads were generally flowing smoothly on Friday morning.
BA's services from Heathrow to both Paris and Brussels will begin again on Christmas Eve, having been axed because of weather conditions.
The airline also said it hoped to operate 95% of its services on Saturday, including 87% of short-haul flights, and plans a full Heathrow service on Sunday.
Low visibility had caused air traffic control to place restrictions on flights landing and taking off at Heathrow, where 300 passengers slept at the airport overnight.
TRAVEL ADVICE
British Airways customers should contact 0800 727 800 or check the www.britishairways.com website to see if their flight is still operating
There is regular travel information on BBC News 24, BBC Radio Five Live and the BBC's local radio and regional TV news.
This website will have updated advice and there are links to the BBC's travel and weather web sites below.
Travel advice at-a-glance
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One traveller waiting for news of their flight at Heathrow said: "I've been here basically since Wednesday night, and I got rebooked three times and all my flights have been cancelled so far.
"So right now it's Friday morning and I don't know how much longer I'm going to stay here."
The BBC's Lucy Wilkins at Heathrow Airport said queues of people continued to file into the heated marquees set up in Terminal One, hoping to have their cancelled flights rescheduled.
Some were optimistic they may leave soon, while others were resigned to a long wait for news of their onward journey.
BA transported about 3,000 passengers to UK destinations from Heathrow by coach on Thursday.
And the airline was laying on similar services again to Newcastle, Manchester, Aberdeen, Glasgow and Edinburgh on Friday.
Thomsonfly departures from Coventry Airport have been switched to Birmingham due to fog, which has also caused disruption at Cardiff and Southampton airports.
Other regional airports have suffered knock-on effects from Heathrow.
Geoff Want, BA's director of ground operations, apologised to customers and said that the airline was "working around the clock" to try to get people to their destinations.
The airline has announced that passengers whose flights have been cancelled are entitled to a full refund.
A spokesman said BA "felt it was the right thing to do".
Backlog
BMI, Heathrow's second-busiest airline, has cancelled eight flights so far, adding to the 40 scrapped on Thursday.
Chief executive Tim Bye said if necessary the airline would fly on Christmas Day to get people back home.
We have fundamental capacity constraints at Heathrow
Simon Baugh, BAA
Why fog causes air chaos
Little cheer at Heathrow
But Simon Baugh, from airports operator BAA, told BBC Radio 4's Today programme that the main problem at Heathrow was one of capacity.
He added: "It's the world's busiest international airport, we only have two runways, if you compare our main competitors in Europe, Frankfurt has three, Paris has four, Amsterdam has five.
"We have fundamental capacity constraints at Heathrow."
Extra runway
With flights cancelled, many travellers have turned to trains to complete their journeys.
Avoid BA, avoid BAA. Never seen anything less organised
Andrew, Richmond
Virgin Trains and GNER, which both run services between London and Scotland, have announced they will be offering extra trains.
Network Rail said there were still some seats available on other services and advised passengers to contact National Rail Enquiries.
Edward Funnell, spokesman for the Association of Train Operating Companies, told Today that rail services would cope.
"Many of the long-distance operators lay on extra services and we believe we will be able to cater for air passengers who wish to transfer to the trains, to get people away and home today but also tomorrow and Sunday."
Eurostar said its services to Europe were running as usual, but passengers were also warned to contact the company before travelling to check if seats were available.
Road jams
Meanwhile forecasters at the BBC's Weather Centre said forecasters were now "reasonably confident" visibility would improve around Heathrow on Saturday, as the fog moved north.

Motorists are being warned to expect delays on the roads
Most of England and Wales has been affected, with only the north of England, the south coast and parts of Cornwall escaping the fog on Friday.
People who have opted to travel by car could also face jams on major routes as last-minute Christmas-shoppers and people travelling home for the festive break head for the roads.
However, it was a quiet start to Friday, according to road information company Trafficmaster, with roads flowing normally.
The RAC said an estimated 18m people were expected to be driving over the next few days with the rush hour on Friday expected to start at 2pm and last until 7pm.

BBC NEWS REPORT.