British low-cost airline EasyJet has cancelled hundreds of flights as the second day of strike action by French air traffic controllers took its toll.
The airline did not operate 331 flights after cancelling 248 on April 8.
Some passengers have been stranded in European cities after Easter breaks, prompting Easyjet to operate five “rescue” flights on April 10.
The additional flights will run from London’s Luton to Paris, Paris to Barcelona, Barcelona to Luton, London’s Gatwick to Madrid, and Marrakech to Gatwick.
A spokesman said the “unnecessary” strike had caused “considerable and disproportionate disruption for passengers and airlines across Europe”.
Rival Ryanair said it had been forced to cancel more than 500 flights over the last two days.
“We again call on the EU [European Union] and French authorities to act now and prevent thousands of travelers being held to ransom by these French [air traffic control] workers,” the Irish low-cost airline said.
Air France said it was operating one-in-four flights to and from Orly airport in Paris, about 40% to and from cities in the rest of France, and 50% of medium-haul flights to and from Paris-Charles de Gaulle airport.
No long-haul Air France flights were affected on April 9.
Air traffic controllers are planning further industrial action from April 16 to 18 and from April 29 to May 2 – both key holiday periods.
Roger Rousseau, head of the SNCTA union that represents French air traffic controllers, said: “We can assure our passengers that we are doing everything possible to limit the inconvenience of this strike on them.”
Among the issues upsetting members is that the retirement age will be raised from 57 to 59.