London Heathrow airport is warning travellers to be wary of delays and cancellations, with British Airways telling travelers via its Twitter feed they can claim a refund or rebook their journey, rather than flying on December 11 or 12.
All flights to Gibraltar have arrived today despite snow-storms there and strong winds here.
The Twitter account of British Airways, believed to be the worst affected airline, received a deluge of messages from customers unhappy about long waits but also no response on their customer service phone line.
While the snow was worst in parts of Wales and the Midlands, the biggest effect was felt in South East England - and in particular at Heathrow airport, the busiest in Europe.
British Airways will be hoping for weather like this at Heathrow, as opposed to the freezing conditions experienced over the last few days. Reuters reported that the regional airport of Eindhoven was shut completely on Monday, canceling all flights.
Belfast International Airport's spokeswoman said 16 Easyjet flights had been cancelled so far on Sunday.
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Three New York services were cancelled as well as two each to Dubai and Toronto, with many Asian flights also cancelled.
Dozens of flights were cancelled in the United Kingdom on Monday due to heavy snowfall, which also disrupted other transport and led to closure of schools.
A BA spokesperson told The Independent: "We're very sorry that some of our customers' travel plans have been affected by severe adverse weather conditions. Like other airlines, we are experiencing some delays and cancellations". "As soon as it's safe we'll start operations again".
A Heathrow spokesperson said: 'Weather across the United Kingdom and Europe is resulting in some passengers experiencing disruption to their journeys. "Airlines are responsible for ensuring their flights are fully de-iced before they are operated and this is resulting in some delays and cancellations". We apologise for any inconvenience but safety is our number one priority.
Following the temporary closure of Birmingham Airport on Sunday due to snow, an Emirates Airline jet bound for Birmingham was forced instead to land at Manchester Airport.