France's civil aviation authority says flights in and out of Paris' two main airports are being canceled due to a strike by air traffic controllers.
The DGAC aviation authority says 15 percent of flights to and from Charles de Gaulle airport and half of flights to and from Orly airport are to be canceled Thursday, day two of the strike.
The agency has recommended that travelers contact their airlines to get flight information.
The strike is expected to end Friday morning.
Air traffic controllers are protesting job cuts and reforms that they fear could change their status as French civil servants.
The airports have also seen delays in recent days linked to snow.