Strike action by French air traffic controllers is likely to affect flights to, from and over France today.
Aer Lingus and Ryanair are among airlines that have cancelled flights in response to the industrial action, which is taking place as part of a national strike by public sector workers.
Intending passengers are advised to check the status of their flights.
Ryanair flights to Carcassonne, Biarritz, and Ibiza have been cancelled this morning.
French public sector staff are joining rail workers in striking to protest at reforms proposed by President Emmanuel Macron, with the country braced for possible major disruption.
The stoppages are part of a series of demonstrations by public sector employees against Mr Macron, who has pledged to reduce public spending, trim jobs and overhaul large parts of the vast French state.
All unions representing civil servants have backed today's strike, a rare show of unity that was last seen around ten years ago.
Their walk-out, which will affect schools, public kindergartens, flights and some energy infrastructure, is the third stoppage since Mr Macron's election in May 2017.