Further cancellations are likely, the low-cost airline warned.
The SNCTA union of air traffic controllers told the French Civil Aviation Authority (DGCA) that the strike would take place on April 8 and 9.
“Disruption is expected over the whole country,” the DGCA said.
The Authority has asked airlines to cut their schedules for flights to and from France on April 8 by 40%.
The SNCTA says it is unhappy about offers made by the state on new working conditions and retirement plans.
The union has also called on its members to go on strike between April 16-18 and April 29- May 2.
“We sincerely apologize to all customers affected by this unwarranted strike action and we call on the EU and French authorities to take measures to prevent any further disruption,” said Ryanair in a statement.
“It’s grossly unfair that thousands of European travelers will once again have their travel plans disrupted by the selfish actions of a tiny number of French ATC [air traffic control] workers.”
Ryanair is offering to transfer customers’ tickets to other flights or provide refunds.
Air France says that it expects to operate almost all its long-haul flights and 60% of its medium-haul flights to and from Paris Charles de Gaulle airport.
Travelers booked on short- and medium-haul Air France flights on April 8 or April 9 can choose to travel between April 10 and April 15 instead, it said.
“Expect cancellations and major delays,” warned the European Organization for the Safety of Air Navigation on Twitter.
Image source: Wikimedia Commons President-elect Donald Trump celebrated his election victory at the Ultimate Fighting…
Millions of voters across the US chose to return Donald Trump to the White House…
Donald Trump declares victory in the US election as he addresses jubilant supporters in Florida.…
Stocks around the world are rising as Donald Trump appears to be on the cusp…
Donald Trump has won Pennsylvania, North Carolina and Georgia and taken a lead over Kamala…
Quincy Jones, the celebrated musician and producer who worked with Michael Jackson, Frank Sinatra, Ray…