Aer Lingus and Ryanair had to cancel a number of flights across their schedule today as a result of a strike by French air traffic controllers.
Ryanair was the worst affected with a total of 222 cancelled flights.
Both airlines are advising customers to check their website for updates and a list of cancelled flights.
Ryanair cancelled flights between Dublin and Nice, and between Dublin and a variety of destinations in Spain.
Aer Lingus cancelled flights between Dublin and Paris, Lyon and Nice.
Aer Lingus said it is closely monitoring the situation as the strike may cause delays or further cancellations, and may indirectly impact their Spanish and Portuguese schedule.
Aer Lingus and Ryanair have offered affected customers the option to change their dates of travel free of charge.
The air traffic controllers' strike was part of a wider public sector worker protest against President Emmanuel Macron's plans to cull jobs and toughen pay conditions.
Civil servants, teachers and nurses marched through cities across France, from Toulouse in the south to Strasbourg in the east, before the day's biggest rally in Paris.
It is the first time in a decade that all unions representing more than 5 million public workers have rallied behind a protest call.
