Given the social and political context in France, to say that this autumn promises to be "lively" is almost an understatement. Bloquons-tout" ("Let's block everything") is one of the social movements marking the month of September, with several calls for strikes, notably on transport lines.
As the fateful date approaches, it's becoming increasingly clear what disruptions are expected on lines in the Paris region. On Monday, September 8, 2025, SNCF announced that two lines in particular would be affected: the R line of the Transilien, which links Gare de Lyon to Montargis via Melun and Fontainebleau, and the RER D, which connects Creil, Chantilly, Saint-Denis, Melun, Juvisy, Corbeil-Essonne and Viry-Châtillon, among others, via Gare du Nord and Châtelet-les-Halles. In addition, there's the RER B line to Charles-de-Gaulle airport, the RER C line to Versailles, the J lineto Houilles, Pontoise and Giverny, and the L line to Suresnes, Bougival and Cergy.
Further details on train frequencies should be available by 5pm on Tuesday September 9, 2025 at the latest. However, the SNCF is already advising travellers to limit their journeys. Although some Internet users are already wondering whether the strike will be extended, for the time being it will only concern Wednesday, September 10, 2025. Another strike is scheduled for September 18, 2025.
Strike on September 18, 2025: what RATP and SNCF disruptions are expected in Paris and the Île-de-France region?
A large-scale interprofessional mobilization will affect Paris and the Île-de-France region this Thursday, September 18, 2025. The four majority RATP unions and three SNCF organizations are calling for "a black day" of mobilization. [Read more]
Details of disruptions on the RER B:
- Expect 1 train out of 2 in the north and 2 trains out of 3 in the south of the line. The interconnection at Gare du Nord will be maintained. No change of train necessary.
- As a reminder, traffic will be interrupted between Gare du Nord and Aéroport Charles de Gaulle 2/ Mitry-Claye from 10:45pm due to works
Details of disruptions on the RER D:
- On the Creil - Corbeil route: expect 1 train out of 3 On the Goussainville - Melun route: expect 1 train out of 2On the Corbeil - Malesherbes route: expect 1 train out of 5 only between 6am and 9am, then between 5pm and 8pmOn the Juvisy - Melun route via Ris Orangis: no trains running
- Please note that no replacement buses will be running during the day or evening. On Thursday September 11th, traffic will remain disrupted on the South RER D line between Juvisy and Malesherbes/Melun via Ris Orangis.
Details of disruptions on line L:
- Expect 2 trains out of 3 .
Details of disruptions on line R :
- Paris Gare de Lyon - Montereau via Moret: schedule 1 train out of 3 only between 6am and 9am then between 5pm and 9:45pm
- Paris Gare de Lyon - Montargis: schedule 1 train out of 3 only between 6am and 9am then between 5pm and 6pm
- Melun - Montereau via Héricy: schedule 1 train out of 3 only between 6am and 9am then between 5pm and 7pm
No replacement buses will be provided.
Awaiting information on other lines.
Strike on September 18, 2025: what RATP and SNCF disruptions are expected in Paris and the Île-de-France region?
