The Unite union has announced a fresh wave of strikes starting on May 18.
The union, which conducted a fresh ballot on industrial action last week, has said a total of 20 days of strikes are planned over a 23 day period.
The right to take industrial action expires one month after a ballot, so Unite had to announce fresh walkouts before June 6.
The latest industrial action will disrupt travel plans over the busy May bank holiday and half term periods. The strikes will end as the Fifa World Cup starts in South Africa.
The walkouts, part of an the ongoing dispute over cabin crew pay and conditions, are planned to take place in four groups of five days with just one day in between.
Weekend reports speculated this was what Unite bosses were planning as it would cause maximum disruption to BA’s contingency plans.
The confirmed dates of the strikes are:
- May 18 to 22
- May 24 to 28
- May 30 to June 3
- June 5 to 9