The majority of flights to and from London Heathrow will operate as normal.
The dispute concerns about 4,000 staff #8211; some 15% of BA#8217;s cabin crew #8211; who have joined the airline since 2010 on #8220;mixed fleet#8221; contracts and who do not feel they are paid enough. About 2,500 of them are Unite members.
But BA said it would be merging a #8220;very small number#8221; of flights to and from Heathrow.
That means some customers will travel slightly earlier or later.