Most affected will be flights to France itself, but also suffering disruption will be services to Spain and Portugal in particular.
Some flights out of Dublin today have already been cancelled and travellers have been advised to stay in touch with their airline for the latest updates.
French air traffic controllers are striking until 6am on Friday. Ryanair, easyJet and British Airways have all cancelled flights with many more delayed.
The 35-hour walk out by French controllers and engineers working for DSNA, the national air-navigation provider, is part of a wider national protest by public servants against President Emmanuel Macron’s plans to reform working conditions. Travel chaos comes as a large number of aircraft normally overfly France resulting in delays and cancellations.
However, French authorities have stipulated a minimum service level of 50 per cent of overflights while others will be able to avoid French airspace.
Switzerland is helping by opening up additional airspace for aircraft to pass through – but this will result in a build-up of delays.
