Ryanair's RYA.I Portuguese cabin staff will go on strike for three days in late June, Portugal's union of civil aviation personnel, SNPVAC, said on Tuesday 14 June.
The workers, demanding compliance with Portuguese law and better working conditions, will walk out on 24, 25 and 26 June, SNPVAC said in a statement.
"This mobilisation is not only an opportunity to put the spotlight on multiple attacks on workers' dignity and to make this reality known but also a moment to show unity and solidarity against dumping", the union added.
Ryanair did not immediately reply to a Reuters request for comment.
The announcement came a day after Ryanair's Spanish cabin announced a six-day strike planned for late June and early July.
French cabin crew at Ryanair went on strike on Sunday 12 June and Monday 13 June demanding better pay and working conditions, a union representative said earlier, adding that more than 40 flights had to be cancelled.
Ryanair's Italian Staff To Join Strikes Planned For 25 June
The above news was followed by news that Unions representing staff and cabin crew for Ryanair RYA.I in Italy have called a 24-hour strike for 25 June, coinciding with walkouts the budget airline is facing the same day in other parts of Europe.
Unions FILT-CGIL and UIL Trasporti said that they were seeking improved pay and conditions after staging a four-hour stoppage earlier in June.
Ryanair workers in Spain and Portugal have announced strikes for late June and the Italian unions said they also expected stoppages in France and Belgium.
Labour unrest and staff shortages in Europe are causing headaches for travellers heading into the peak summer season, with airports and airlines clamouring to find more workers, minimize cancelled flights and reduce delays.
Ryanair ranked first for the number of passengers travelling to and from Italy last year as Alitalia shrunk its network before handing over to smaller ITA Airways.