Britain said on yesterday it was relaxing night flying restrictions at London's Heathrow airport for the next four days to help it clear a backlog of flights hit by severe icy and snowy weather in recent days.
Transport Secretary Philip Hammond said operating hours at the airport would be extended until 1 am and arrivals for repatriation flights would be allowed throughout the night.
The airport, operated by Spanish-owned BAA, told passengers not to turn up at its terminals one and three because of overcrowding on Monday.
"The immediate focus at Heathrow must be maximising the number of flights with the available infrastructure," Hammond told parliament.
"In order to do this I have agreed with BAA this morning the relaxation of restrictions on night flights for the next four days," Hammond added.
British Airways, the largest operator at Heathrow, said the airport would only be using one of its two runways on Tuesday meaning the airport would be operating at significantly reduced capacity.