British Airways expects to merge less than one per cent of Heathrow flights due to a second wave of cabin crew strike action next week.

The airline stressed that all passengers would fly to their destinations during the industrial action in a dispute over pay on February 9-11.

The latest statement mirrored BA’s advice for a three-day walkout by mixed fleet cabin crew members of the Unite union which is due to start on Sunday.

BA said the “vast majority” of flights from Heathrow would operate as normal while services at Gatwick and London City airport would be unaffected.

“To enable all customers to travel we will be merging a very small number of flights at Heathrow – less than one per cent of total flights planned,” the airline added.

“This will mean some customers will travel slightly earlier or later in the day than originally booked. We are contacting those customers with the options available to them.”

BA said: “Our pay offer for mixed fleet cabin crew is consistent with deals agreed with more than 90% of British Airways colleagues, including many Unite members.

“More than 9,000 cabin crew, represented by a different Unite branch, this week voted overwhelmingly to accept the deal.

“The offer also reflects pay awards given by other companies in the UK and will ensure that rewards for mixed fleet remain in line with those for cabin crew at our airline competitors.”