Ryanair has cancelled a number of flights tomorrow due to the upcoming French air traffic controller strike.
The strike is due to take place at 6pm tonight, and will end at 5am on March 23.
Unions are striking in response to the changes in proposed labour suggested by French president Emmanuel Macron.
Which airlines are affected? Travel advice and flight cancellations explained.
Ryanair tweeted: “We regret to advise customers that due to an air traffic control strike in France on 22nd March 2018, we have been forced to cancel some flights.
“Affected customers have been notified via SMS and email.”
Some of the flights affected are to France, with passengers travelling from London Stansted to Bergerac, Pointers and Toulouse just some of those affected.
Flights that are travelling over France are also expected to be affected, with the following currently cancelled:
London Stansted
FR8382: Alicante 06:30
FR295: Toulouse 07:10
FR8162: Malaga 07:20
FR1886: Lisbon 11:50
FR8592: Bergerac 12:25
FR9044: Barcelona 12:45
FR2634: Zaragoza 13:15
FR8976: Alicante 15:00
FR9014: Barcelona 15:50
FR8474: Poitiers 13:50
FR8321: Valencia 17:55
FR8164: Malaga 18:50
FR1082: Toulouse 19:00
FR9814: Barcelona 20:05
London Luton
FR3452: Murcia 16:25
Ryanair has called on the French Government to take action against the ATC unions in a bid to prevent customers being affected.
Kenny Jacobs said: “Yet again, thousands of European consumers will have their travel plans disrupted by a tiny group of French ATC unions going on strike this week.”
Other airlines are warning passengers of cancelled or delayed flights.
EasyJet issued a statement saying: “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 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.
British Airways has also warned passengers of disruption and has cancelled over seven flights for today.
The airline has allowed passengers to change their journey if travelling to France or Spain up to March 27.
It is hoping to use larger aircraft to cover the flights that have been cancelled.
Eurostar has cancelled some journeys, with two trips to Paris cancelled on Thursday and one on Friday.
Rail journeys could be affected for over three months as rail workers also join the strike.
