More than 5,000 flights within, into or out of the US have already been cancelled for Monday.

New York City has banned non-essential travel as a major storm brings heavy snow to large parts of the eastern US.

The travel ban began at 21:00 local time on Sunday (02:00 GMT Monday) and runs until to 12:00 local time (17:00 GMT) on Monday.

It's the first time in nine years that New York City has been under a blizzard warning.

Blizzards are winter storms where heavy snowfall or blowing snow combines with winds over 35mph (56km/h) to create visibility of less than a quarter of a mile (402m) for three hours or more, according to the National Weather Service.

More than 5,000 flights within, into or out of the US have already been cancelled for Monday.

Winter storm warnings stretch from North Carolina to northern Maine, with warnings also in place in parts of eastern Canada.

Across the US, more than 200,000 homes and businesses are without power.

It's not just flights in the US that are affected by the storm - lots of flights in the UK heading across the Atlantic have been cancelled or delayed.

A number of departures from Heathrow to cities including Boston, New York and Philadelphia are cancelled through Monday morning and afternoon.