Transatlantic flights today face disruption from severe winter snow storms in the US today, British Airways warned.

The worst affected airports are expected to be Boston, New York JFK and Newark although other airports may also see more limited snowfalls, according to the airline.

“There are severe snow storms forecast across the east coast of the USA, and as a result flights to and from the region will be affected on Thursday,” BA said.

“We will look to use larger aircraft where we can to help accommodate extra customers who are not able to travel on Thursday as a result of the cancelled services.”

Passengers are being offered the option to change bookings free of charge up until Sunday in a policy which also applies to partner carrier American Airlines and Iberia on affected US east coast routes.

The alert came as BA stressed that passengers will be able to fly to their destinations through a second wave of strike action by cabin crew.

The latest three-day walkout started today by Unite members of mixed fleet cabin crew, which represents one of the airline’s five cabin crew fleets.

BA said the majority of flights from Heathrow will operate as normal, while flights at Gatwick and London City airport will be unaffected.