A general strike in Spain has been called for Wednesday 14 November. British Airways is doing all it can to minimise the disruption to customers as a result of the action.
Those due to fly to or from Spain on Wednesday can rebook to an alternate date free of charge up to November 28.
BA is also looking at putting on larger aircraft to help as many customers as possible on flights to Madrid and Barcelona.
There is a possibility of some disruption to other European destinations including Portugal, France, Italy and Greece.
Customers are being advised to check ba.com for the latest flight information.