Paris CDG Rail Access, RER B Late Closures Nov 17-Dec 12

Evening rail access between central Paris and Paris Charles de Gaulle Airport (CDG) will be limited for almost a month while the RER B undergoes planned maintenance. From Monday, November 17, to Friday, December 12, weeknights from about 1045 p.m. local time, trains will not run between Paris Gare du Nord and Aéroport Charles de Gaulle 2-TGV or Mitry-Claye, with replacement buses extending journeys. Additional weekend night closures apply north of Aulnay-sous-Bois on November 8-9, 15-16, and 22-23 from roughly 1100 p.m., also with buses. Travelers arriving late into CDG should pad transfers, or switch to coach or taxi options for the city.

What is changing for late-evening trips

RATP and the RER B line operator say that, on weekdays from November 17 to December 12, all trains halt after about 1045 p.m. between Gare du Nord and CDG/Mitry while crews work overnight, with normal service resuming the following mornings. During this window, replacement buses cover the affected section. On three November weekends, night service also stops between Aulnay-sous-Bois and CDG after about 1100 p.m., again with buses bridging the gap.

Replacement buses and how to board them

For the main weeknight works, RER B directs passengers bound for CDG1 or Mitry-Claye to board substitute buses from the Gare du Nord bus station. A separate shuttle serves intermediate stations between La Courneuve-Aubervilliers and Le Blanc-Mesnil from La Plaine-Stade de France. On the November weekend closures north of Aulnay, buses link all stations up to CDG1; use the free CDGVAL to move between CDG terminals if needed. Roissybus to Opéra is another airport-to-city option during the works.

First and last trains during works

RER B's engineering posters list "last theoretical trains" before the nightly shutdown. In practice, southbound trains from CDG2 toward Paris run until just before 1100 p.m., and northbound departures from Gare du Nord toward CDG/Mitry are scheduled around the 1030 p.m. mark during the affected periods. Check the posted "Horaires des derniers trains" for your exact station before you travel, since last-train minutes vary by branch.

Guidance for tight long-haul arrivals

If your long-haul arrives after about 9:30 p.m., plan for longer total time to reach Paris. When the RER B is closed, the most predictable alternatives are Roissybus to Opéra, licensed taxis from official ranks, or prebooked coaches. If you still prefer rail, confirm whether your arrival falls on a weekend north-end closure or a weekday full shutdown, then check the last-train minutes and the bus boarding points before clearing customs. Paris Aéroport maintains a summary page for RER B access and substitutions during works, and lists airport-city alternatives.

Background

The RER B is the principal suburban rail line linking central Paris with CDG, with branches to Aéroport Charles de Gaulle 2-TGV and to Mitry-Claye. Modernisation works have been staged across autumn and early winter, with late-evening closures targeted to limit daytime disruption. Tourism and city guides also repeat the dates and the 10:45 p.m. cutoff as a traveler alert, but the RER B blog and RATP's live traffic pages remain the authoritative sources for night-by-night details.

Final thoughts

If you are landing late into CDG during November and early December, assume the RER B may not be running and plan your city transfer around buses, Roissybus, or a taxi. The nightly shutdown protects daytime reliability, however it adds time and complexity to late arrivals. Recheck the closure dates, last-train minutes, and bus boarding points on the day you travel.

Sources

• Les Travaux à venir sur le RER B
• Info trafic RER line B
• RER B, works and closures
• Getting to Charles de Gaulle Airport by RER B
• Travaux accès RER B, Paris Aéroport
• RER B disruptions, Paris je t'aime
• Transport disruptions in Paris, Sortir à Paris