RER A: works and closures

Due to engineering works, RER A service will be suspended on the following dates:

• March 3 to 7, 2025
  No RER A service between Nanterre-Préfecture and Achères-Ville / Poissy from 10 p.m.
• March 10 to 14, 2025
  Service changes between Nanterre-Préfecture and Cergy-Le Haut from 10 p.m.: due to works, trains to Cergy–Le Haut will exceptionally run via Poissy. Please remain on board at Poissy station to continue to Cergy–Le Haut.
• March 15 to 16, 2025
  No RER A service between Maisons-Laffitte and Poissy from Saturday 10 p.m. to Sunday 6:30 a.m.
• March 17 to 21, 2025
  March 24 to 28, 2025
  No RER A service between Sartrouville and Cergy-Le Haut / Poissy from 10:15 p.m.
• March 22 to 23, 2025
  No RER A service between Maisons-Laffitte and Poissy.
• March 29 to 30, 2025
  No RER A service between Nanterre-Préfecture and Cergy-Le Haut / Poissy.

• Consult the X account @RER_A or the website.
• To plan your travel in advance and see your journey time, please consult the itinerary planner.
• Consult the  map.
• Consult the list of others stations with works and closures in progress.

This page is regularly updated to reflect works and closures on the line.