From Charles de Gaulle Airport by RER B train (80-90 mins)
(By train is the fastest route, especially at rush hours).
From Terminal 1: Follow the signs : RER, RoissyRail, Paris by Train. The Green shuttle bus to the Terminal 1 RER train station leaves from the lower “boutiques” level of terminal 1. The shuttle bus ride to the station is free and takes about 5 minutes (frequency: about every 10 mins).
From Terminal 2 : The Terminal 2 RER train station is below Terminal 2, situated between Halls C/D and E/F : Follow the signs : Gare TGV - RER, RoissyRail, Paris by Train.
From Terminal 3 : The RER station is a short walk (300m 5-10 mins) : Follow the signs : Gare TGV, RER B, RoissyRail, Paris by train. Plan of terminal :
Tickets are on sale at the entrance to each of the 2 RER train stations.
Charles de Gaulle Airport to Gif sur Yvette = 11.50 Euros
All day, except from 16h to 18h, every second train goes all the way from the airport to Gif sur Yvette (frequency: every 15 mins).
The train terminus is indicated on a panel hanging above the platform : choose “Direction St. Remy les Chevreuse”.
If you take a train whose terminus is not St. Remy les Chevreuse, change at Luxembourg, Port Royal or Denfert Rochereau to a following train on the same platform - these stations are less crowded than the other city centre stations at the Gare du Nord, Chatelet and St Michel.
(The airport to Luxembourg station takes 42 mins.)
From Orly Airport: shuttle train “OrlyVal” to Antony, then RER-B train to Gif (40 mins).
Orly South terminal (Sud) Exit K
Orly West terminal (Ouest) Exit J or W
Tickets are on sale in the airport terminal, close to the exit door. Orly Airport to Gif sur Yvette = 9.45 Euros
The shuttle train will take you to the RER-B station Antony (10 mins).
Change here for an RER-B train, Direction St. Remy les Chevreuse. The train terminus and stations served are indicated on a panel hanging above the platform : every second train will go all the way to Gif.