There is disruption at London's two main airports - Heathrow and Gatwick - and at smaller airports across the UK.Eurostar is running a restricted service out of London.
Gatwick Airport reopened at 0600 GMT after closing overnight, but passengers were told to expect further disruption. Heathrow Airport is operating no more than a third of all flights until at least 0600 GMT on Wednesday. Airport operator BAA said Heathrow's south runway would remain closed on Tuesday and advised people not to travel to the airport unless their airline had confirmed the booking. It also warned passengers to expect delays and cancellations, possibly up to Christmas Day.
British Airways said it was suffering "significant disruption" in and out of Heathrow, especially to its short-haul schedules. Source: www.bbc.co.uk