To use the RER train system to get you into central Paris via its line 3 route you first have to use the Orlyval shuttle train service from the airport to the RER station 'Antony'
The Orlyval / 'Paris by train' signs are well situated and easy to follow.
The Orlyval is the shuttle service connecting Paris's Orly Airport with the city's RER transit network and is chosen by by many as the most reliable way to travel to and from Orly airport and Paris. There a regular service from Orly to Antony RER station, from 6 a.m. to 11 p.m. every day of the week.
These automated, driver-less trains run all day and every four minutes during morning and evening peak periods.
This method of getting to CDG Paris may not suit everyone as the trains can be busy at peak times and handling luggage and young children might prove difficult - although it can be a good option for budget travellers and those who don't mind hauling their luggage through turnstiles and up some escalators.
You can buy your ticket for the journey at the Orlyval ticket booth within the airport then use the escalator/elevator up to the the elevated Orlyval train station.
Orly to CDG airport € 19.65 € 11.70
ORLYVAL runs every 5 to 7 minutes, from 06:00 to 23:35.
The ticket is valid for the Orlyval and RER train journey to Charles de Gaulle airport.
It is a short train journey ( 8 mins ) to 'Antony' station, you have to use your ticket to get through the barriers as you arrive. If you have bulky items there is normally an attendant on hand.
Once at Antony the RER trains are well sign-posted.
From the Antony RER station, you take the train B3 in the direction of Aéroport Charles de Gaulle' and not the ones marked to 'Mitry Claye'.
The line has hubs at St.Michel - Notre Dame, Chatelet-Les Halles and Gare du Nord if you want to change on to the metro system further into the city and your ultimate destination. You can reach central Paris in under half an hour.
There are two stations at Charles de Gaulle, Paris - 'Aeroport Charles de Gaulle1' at the 'Roissypole' complex for terminal 1 and terminal 3 and ' Aeroport Charles de Gaulle 2 TGV' for Terminal 2
At Roissy Charles de Gaulle Airport:
Getting from train station 'Aéroport Charles de Gaulle 1' (TI -T3) to terminal 1 click here...
Getting from train station 'Aéroport Charles de Gaulle1' (TI -T3) to terminal 3 click here...
Getting from train station 'Aéroport Charles de Gaulle 2 TGV' (T2) to terminal 2 click here...