More than 5,000 flights have been cancelled as a "potentially historic blizzard" bears down on the US north-east coast.
New York, Boston and Philadephia are expected to be deluged by heavy snow from later today.
Widespread disruption has been forecast — Boston Logan airport will reportedly close this evening until Wednesday and flights to the region are likely to be cancelled or delayed over the next few days.
British Airways today cancelled seven flights from London Heathrow to New York and one to Boston and said passengers should expect delays tomorrow. Check your BA flight status here.
Virgin Atlantic has cancelled three London to New York flights today, as well as one tomorrow morning, and two flights to Boston. Check your Virgin Atlantic flight status here.
BA said in a statement: "Heavy snow is forecast to fall over the east coast of the US. We anticipate that some flights to and from the US will be disrupted.
"Many flights may need to have de-icing treatment on their wings, engines and fuselage, before they are cleared for take-off and this might also lead to some flight delays throughout the day."
The majority of the services disrupted so far are domestic flights in the US, with United Airlines already cancelling 481 flights for Tuesday, while Jet Blue has cancelled 461 and Express Jet 267. Rebooking options for United passengers can be read here.
New York City Mayor Bill de Blasio has warned residents to potentially expect "the biggest snowstorm in the history of this city".