Travel to Orsay
From the airport
LAL is located on the Université d’Orsay Paris-Sud Campus, 25 kilometers south-west of Paris. The easiest way to reach the Orsay campus is by taking the RER B line to the Orsay-Ville station (35 minutes from Châtelet, around 3.45 Euros for a single ticket and 1 hour from Charles de Gaulle).
From Terminal 1: The RER station is not located inside Terminal 1.
Take the CDGVAL light rail (5 minutes journey) to « Terminal 3-Roissypole ».
CDGVAL station for Terminal 1 is located at level 2;
From Terminal 3: The RER station is not located inside Terminal 3.
Look for « Paris by train » signs (follow the signposted footpaths).
RER station is 400 meters away from the terminal (5 minutes journey by walk) .
At the RER station, take the RER B going to Saint-Rémy-lès-Chevreuse (and not to Robinson), getting off at Orsay-Ville. The price for a RER ticket from Roissy-Charles de Gaulle to Orsay-ville is 13 Euros.
Take the Orlyval at the price of 11,10 Euros (Automatic rail link connecting to RER line B) to the Antony station and then transfer to the RER B going to Saint-Rémy-lès-Chevreuse (and not to Robinson) and get off at Orsay-Ville.
Please do not mistake the RER B station « Orsay-Ville » for the Paris metro station « Musée d’Orsay ». From Paris, you must buy a ticket specifically for « Orsay-Ville ». A Paris metro ticket is not sufficient !.
It comes as a card with a coupon attached and opens the doors to the whole Ile-de-France network : Metro, RER, Buses, Trams, SNCF overland suburban trains. How about a few destinations ? – Disneyland Resort Paris (zone 5), the Château de Versailles (zone 4), Orsay-Ville (zone 5) or the airports at Charles de Gaulle (zone 5) and Orly (zone 4). The pass becomes valid from the first day of use (and not when you buy it). Once you have bought your ParisVisite pass, fill in the card with your name and first name. Take care to write the serial number of the card on the coupon and add your planned start date. The card and coupon must be kept together and produced for inspection when requested. The price for Five days (Zones 1-5) is 57,75 €.
The main train stations (Gare du Nord, Gare de l’Est and Gare de Lyon are connected to the Metro/RER system going to Orsay-Ville. Consult the preceding paragraph for fares (coupons etc).
If you leave Paris from « Porte d’Italie » or « Porte d’Orléans », take the A6 autoroute in the direction of Lyon ; on the autoroute, after 10 km, follow in the direction of « Bordeaux » ; after another 10km, take the Orsay exit and follow panels to reach Orsay and « Faculté d’Orsay ». After this, look up in a local map to find LAL.
If you leave Paris from « Pont de Sèvres », take the N118 in the direction of « Bordeaux », after 30 km, exit at Orsay. Then, follow « Faculté d’Orsay » or find the RER-B train station « Orsay-Ville ». After this, look up in a local map to find LAL.
In principle, going to Orsay from Paris in the morning is « against the flow » : « pros » do the trip in 30 mn ! (Speed is limited to 110 km/h on autoroute, 90 km/h on national roads, 50 km/h in town).
Exit station and to the left take the pedestrian tunnel that crosses back under the railway (follow the students) go down « Rue E. Desjobert », following the « Orsay University » arrow. At the bottom of the hill, turn left « Rue de Launay » and go straight following the road that crosses the Orsay campus. The main LAL entrance (building 200) is on the left, around 10 minutes walk from railway station.