RER B traffic disruptions

Here we list the major works and events that could affect your journey on RER line B (North part).
This page is updated regularly with the latest information.

Transport & DirectionsRER B (Paris by train)Maps & Journey Planner

Planned closures and service changes

October 01-02
Planned works RER B
October 01-02
No service between CDG Airport and Aulnay-sous-Bois

Rail replacement bus service between CDG Roissypole bus station < > Aulnay.
Passengers using Terminals 1 & 2 should take the CDGVAL shuttle train to-from Terminal 3-Roissypole.

Warning
To get to CDG Airport, you must take the trains to Mitry-Claye and then take the rail replacement bus.
Please allow extra time for your journey.

We suggest to use Roissybus instead (see Alternative route below).

October 03-November 18
Planned works RER B
Monday to Friday from 22:45
No service between CDG Airport and Paris-Gare du Nord

Rail replacement bus service between CDG Roissypole bus station < > Gare du Nord.
Passengers using Terminals 1 & 2 should take the CDGVAL shuttle train to-from Terminal 3-Roissypole.
Please allow extra time for your journey.

We suggest to use Roissybus instead (see Alternative route below).

October 08-09
Planned works RER B
October 08-09
No service between Aulnay-sous-Bois and Paris-Gare du Nord

Rail replacement bus service between Aulnay-sous-Bois (RER B) < > Stade de France Saint-Denis (RER D).

Warning
Please take the rail replacement bus between Aulnay-sous-Bois and Stade de France Saint-Denis and then take the RER D trains between Stade de France Saint-Denis and Gare du Nord or Châtelet-Les Halles.
Please allow extra time for your journey.

We suggest to use Roissybus instead (see Alternative route below).

Alternative route

In case of major traffic disruption or closure due to maintenance works on RER line B, we suggest to use Roissybus instead.
Roissybus runs non-stop between Paris-Opéra and CDG Airport in approx. 60 minutes.

You can catch Roissybus at CDG Terminals 1, 2, 3 ; in Paris 11 rue Scribe, nearby Auber station, just one stop away to-from Châtelet-Les Halles with RER line A.