Major disruption

Belgium also closed its motorways to truck traffic after there was a peak of 600 km of traffic jams at the height of the rush hour on Monday morning in the Wallonia region.

An iced-over train is seen parked in the railyard at Malmo central station December 20, 2010. [Agencies]

In the United Kingdom, British Airways said the severe weather continued to cause significant disruption to operations and further travel chaos was possible on forecasts of more snow.

Only one of two runways at London Heathrow, the world's busiest international airport, was operating after the snowstorm paralyzed the airport over the weekend, stranding thousands.

Other UK airports were open, but many flights were canceled or subject to long delays, and many passengers spent a second night at an airport terminal.

"There is the risk of further snow across parts of southern Britain tonight and through tomorrow," said Met Office Chief Forecaster Steve Willington.

The severe weather has hit retailers at the height of Christmas trading. Britain's biggest department store chain, John Lewis, said sales fell more than 10 percent on Saturday, while France's Auchan said its business was being affected.

Some online retailers are not accepting new orders or are cancelling existing ones because of delivery problems, according to industry body IMRG.

Northern France was also covered by heavy snow, disrupting road and rail traffic as Parisians braved clogged highways to reach their holiday destinations.

Air travel was reduced at Paris's two main airports, with Orly airport shutting down briefly and stranded travelers still camping out in the waiting areas at Charles de Gaulle.

Train travel between Paris, London and Brussels on the Eurostar line was disrupted, partly because of speed restrictions, the company said on its website, adding that sales were closed for travel up to and including December 24.

In Poland, hard hit by the cold snap, six people froze to death on Sunday night, raising the death toll to 114 in the last month.

Heavy snow snarled Warsaw traffic again on Monday. Warsaw airport was open but was receiving far fewer passengers than usual because of flight cancellations in western Europe.