A warning of “widespread demonstrations” as part of ongoing strike action across France has been issued for today (Thursday).

All modes of transport could be involved as part of a continuing industrial dispute across the country over state pension reforms.

An easyJet alert suggested flights may be affected until 6.30am on Friday as part of the latest action which has been taking place since Tuesday.

The airline said: “Some air traffic control staff are joining the strike action and therefore like all airlines, our flights to and from French airports, as well as those flying in French airspace, could be affected.

“We expect that there will be delays and some disruption 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.”

Air France said: “We expect some disruptions on our short and medium haul flights schedule. We plan to cover our entire long-haul flight schedule.”

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The FCO said in updated travel advice: “Strike action continues across France. Widespread demonstrations are planned across France on Thursday 16 January.

“You should avoid demonstrations and follow the advice of the local authorities.”

The ongoing guidance on “significant” points out that transport and public services are primarily affected, with ongoing cancellations and severe delays to train, metro, bus and tram services.

“Industrial action by hauliers on some major roads may also cause blockages or delays to road travel,” the FCO added.

“If you’re due to travel to or within France, check the website of your chosen operator for the latest information before you set off.

“In the event of any disruption to Channel crossings, information about alternative routes and operators is available via this interactive map.

“As part of the ongoing industrial action, wider demonstrations are planned across France. Avoid demonstrations wherever possible and follow the advice of the local authorities.”

The warning follows strikes in December which disrupted many air and rail services across the country.