RER Line A

St-Germain-en-Laye • Poissy • Cergy

Boissy-St-Léger • Marne la Vallée

Throughout its 109km of track and 46 stations, the RER A serves 7 departments and 41 cities. The termini of the RER A are, to the west of Paris, the stations of Cergy-Le Haut, Poissy, and Saint-Germain-en-Laye, and to the east of Paris, the stations of Boissy-Saint-Léger and Marne-la-Vallée–Chessy. The latter provides access to Disneyland Paris.

The line officially took the name RER A in 1977 when the central section between Auber and Nation was put into service, thus connecting the western and eastern suburbs. Between the stations of Cergy-Le Haut and Houilles-Carrières-sur-Seine, the line shares its tracks with the L line of the Transilien network.

All stations on the RER A line are wheelchair accessible.

To stay informed, you can follow the RER A's information and updates on its dedicated Twitter account as well as on the RER A blog (

Works 2023

RER line A map

Click on the map to enlarge.
RER line route A

RER line A traffic info

Timetable for RER line A

Look up all schedules of all RER lines by selecting a stop.

Stay informed in real-time about disruptions on this line

RER line A Twitter

RER line A stations

Did you know?

1977Start of Service
309,4MYearly travelers
847 672Validated tickets per day

Accessibility of RER A line

The guide for all stations on line A, downloadable below, allows you to find, for each station, information about accessibility, services, and facilities adapted to different types of disabilities.

To help you on your journey, you can also consult these two guides for an easier trip:

Other lines in Île-de-France

Frequently Asked Questions

  • How many stations are there on RER line A?

    There are 46 stations on RER line A.

  • How can I find out which RATP stations and stops are accessible to wheelchair users?

    For the RER, the 65 stations operated by RATP are accessible to people with reduced mobility (PMR) and are equipped with elevators to the platforms. All bus lines in Paris are accessible to wheelchair users, as well as line 14 of the metro.

  • How can I download the Bonjour RATP application?

    You can download the Bonjour RATP application by following the links on the Bonjour RATP website or from your phone's app store (Google Play for Android phones and the App Store for iPhones).

  • How long is a Ticket t+ valid for the metro, bus, RER, or tram?

    The Ticket t+ is valid on all metro lines, as well as trams, buses, and RER trains operating within Paris. It costs 1.90€ per unit. In the metro or RER, it is valid for 1 hour and 30 minutes without exiting. On the bus or tram, a single Ticket t+ is valid for the entire journey. It allows transfers between buses and/or trams for 1 hour and 30 minutes from the first validation.