French Air Traffic Controller Strike Causes Flight Cancellations at Paris CDG and Marseille Airports
Why It MattersA pre-notification regime that forces unions to declare strike intent two days ahead lets regulators size cancellations precinctly, keeping disruption contained to specific airports rather than cascading nationwide.
What happened
France's civil aviation authority, the Direction générale de l'aviation civile (DGAC), called on airlines to reduce flights after air traffic controllers joined a broader public sector strike affecting schools, hospitals, fire stations and other services across the country. The DGAC said the reductions were needed to limit disruption and ensure the safety of air operations, and announced the measures late Monday evening.
Paris Roissy Charles-de-Gaulle and Marseille-Provence are the hardest-hit airports. At Charles-de-Gaulle, approximately 5% of flights will be cancelled between 07:00 and 20:00. At Marseille-Provence, up to 25% of scheduled flights between 16:00 and midnight face cancellation. Additional delays and cancellations are expected at Strasbourg, Nantes, Limoges, Tarbes-Lourdes-Pyrénées and Pau-Pyrénées airports. Passengers were advised to check for updates via airline apps and airport websites.
Under a 2023 law, air traffic controllers, who are civil servants covered by strike motions, must notify the DGAC of their intention to strike no later than noon two days before the planned action. This notice allows the authority to organise a strike roster and calculate the number of required flight cancellations. One union, FGF-FO, holds an extended strike motion running until December 31.
Industry impact & what to watch
This action sits within a recurring cycle of French public sector strikes reaching into air traffic control, where controllers' civil-servant status ties their industrial action to broader national walkouts rather than aviation-specific disputes alone. The 2023 notification law is doing visible work here: by requiring unions to declare intent two days ahead, the DGAC can pre-calculate cancellations by airport and time window instead of scrambling reactively, which is why this disruption is notably less severe than previous targeted controller strikes that produced mass cancellations across France.
Because French airspace covers some of Europe's busiest air corridors, even localized ground cancellations can ripple into overflight delays for carriers with no French departure or arrival at all. Whether this stays contained depends on whether other unions join FGF-FO's extended motion running to December 31 — combined action across unions is what has historically pushed disruption beyond the current handful of airports.
