A French air traffic control strike is affecting all flights to and from France today.
The strike started at 5pm yesterday and will continue until 4am tomorrow morning, according to Dublin Airport.
Aer Lingus and Ryanair are among the airlines that have cancelled flights as a result of the industrial action, which is part of a wider national strike by public sector workers.
Passengers are being urged to check their flight information with their airline before arriving at the airport.
A French air traffic control strike starting 17.00 this evening will continue until 04.00 Wed May 23. A number of European flights to/from @DublinAirport have been cancelled. Passengers are advised to check latest flight info with their airline before coming to the airport.
— Dublin Airport (@DublinAirport) May 21, 2018
Aer Lingus has said that passengers flying today can opt to change their flights to tomorrow, Thursday or Friday, "regardless of whether their flight is operating or not."
Ryanair passengers can apply for a refund or change their cancelled flight for free.
Don't forget to check your flight info before you leave.