PASSENGERS are being warned hundreds of flights are set to be cancelled or delayed due to the first French air traffic control strike of the summer.

The walkout will take place from 7pm local time today, Wednesday, until 6am on Friday.

The 35-hour strike from controllers and engineers working for DSNA, the national air-navigation provider, is part of a wider national protest by public servants in France against President Macron’s plans to reform their working conditions.

Due to the number of flights which normally fly over France, national reports have warned of widespread delays and cancellations.

The French authorities have stipulated a minimum service level of 50 per cent of overflights – those which do not land or take off in France – and some flights will be able to avoid French airspace.

Switzerland is also opening up additional airspace sectors to take some of the strain, while extra traffic is expected on routes west of French airspace for links such as from the UK to the Canary Islands and Morocco.

Easyjet, Ryanair and British Airways are among the airlines affected.

An Easyjet spokesman added: "Like all airlines, our flights to and from France, as well as those flying in French airspace, could be affected.

"Also flights that do not operate through France may still be affected as 65% of easyJet flights operate through French air space and may be delayed before arriving for your flight.

"We expect that there could possibly be delays and cancellations due to the industrial action, therefore we advise all customers to check the status of their flight on our flight tracker either on our mobile app or website.

"Although this situation is outside of our control we would like to apologise to any affected passengers for the inconvenience caused."

Affected customers will be contacted directly by the company if their flight is cancelled.

You can track your Easyjet flight by clicking here

Ryanair also apologised for the inconvenience and said passengers on cancelled flights would be advised of their options of a free move or a refund by email and text.

A spokesman added: "If you have not received an email or text then we expect your flight to operate as scheduled.

"If your flight is delayed, you will be sent an email and SMS on the day of your flight with the updated scheduled times of departure."

British Airways added they would be using larger aircraft, where possible, on other services to help affected customers.