Paris - AFP
Up to a third of flights were cancelled at French airports on Monday as air traffic controllers entered a second day of strikes.
Low-cost airline Ryanair deplored what it said was the 41st strike by French air traffic controllers since 2009.
Around 140 passengers spent the night in Paris's Orly airport where half of flights were cancelled on the first day of strikes on Sunday.
Authorities Monday asked airlines to cut a third of flights at Orly and Marseille airports, and 20 percent at Lyon, Nice and Beauvais near Paris.
The striking union, which represents around a fifth of air traffic controllers, is campaigning against job cuts and the lack of investment in new technology.
Air France said journeys out of Paris's other main airport, Charles De Gaulle, were not facing cancellations, but last-minute delays were possible.
EasyJet said it had cancelled 90 flights and that more disruptions were possible.