How to get from Les Ulis to Chessy by RER and bus?

From Les Ulis to Chessy by RER and bus

To get from Les Ulis to Chessy in Paris, you’ll need to take one bus line and 2 RER lines: take the 4603 bus from Rond-Point de Mondétour station to Gare D'Orsay-Ville station. Next, you’ll have to switch to the B RER and finally take the A RER from Châtelet Les Halles station to Marne-La-Vallée Chessy station. The total trip duration for this route is approximately 1 hr 43 min. The RER and bus schedule from Les Ulis may change. We recommend you check the updated RER and bus schedule to Chessy on the Moovit app.

103min
Walk to bus station
Bus - 46034603
RER - B
RER - B
RER - A
RER - A
Walk to Chessy
Leaves from Rond-Point de Mondétour

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Rond-Point de Mondétour
    510 m • 7 min
  • 2
    Bus - 46034603
    Wait for bus
    4603
    Gare D'Orsay-Ville
  • 3
    Ride to bus station
    Ride to bus station
    Gare D'Orsay-Ville
    6 min
  • 4
    Walk to RER station
    Walk to RER station
    Orsay Ville
    30 m • 1 min
  • 5
    RER - B
    Wait for RER
    B
    Aéroport Charles de Gaulle 2 (Terminal 2)
  • 6
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    36 min
  • 7
    RER - A
    Wait for RER
    A
    Marne-La-Vallée Chessy
  • 8
    Ride to RER station
    Ride to RER station
    Marne-La-Vallée Chessy
    42 min
  • 9
    Walk to Chessy
    Walk to
    Chessy
    250 m • 4 min
*Duration based on 8am traffic

Alternative route from Les Ulis to Chessy by RER and bus via 4609, B and A

To get from Les Ulis to Chessy in Paris, you’ll need to take one bus line and 2 RER lines: take the 4609 bus from Rond-Point de Mondétour station to Gare du Guichet station. Next, you’ll have to switch to the B RER and finally take the A RER from Châtelet Les Halles station to Marne-La-Vallée Chessy station. The total trip duration for this route is approximately 1 hr 45 min. The RER and bus schedule from Les Ulis may change. We recommend you check the updated RER and bus schedule to Chessy on the Moovit app.

105min
Walk to bus station
Bus - 46094609
RER - B
RER - B
RER - A
RER - A
Walk to Chessy
Leaves from Rond-Point de Mondétour

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Rond-Point de Mondétour
    510 m • 7 min
  • 2
    Bus - 46094609
    Wait for bus
    4609
    Christ de Saclay
  • 3
    Ride to bus station
    Ride to bus station
    Gare du Guichet
    8 min
  • 4
    Walk to RER station
    Walk to RER station
    Le Guichet
    250 m • 4 min
  • 5
    RER - B
    Wait for RER
    B
    Aéroport Charles de Gaulle 2 (Terminal 2)
  • 6
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    33 min
  • 7
    RER - A
    Wait for RER
    A
    Marne-La-Vallée Chessy
  • 8
    Ride to RER station
    Ride to RER station
    Marne-La-Vallée Chessy
    42 min
  • 9
    Walk to Chessy
    Walk to
    Chessy
    250 m • 4 min
*Duration based on 8am traffic
The Most Popular Urban Mobility App in Paris.
All local mobility options in one app

Public transit directions from Les Ulis to Chessy

The distance between Les Ulis, Paris and Chessy, Paris is approximately 65.74 km, which can typically be travelled in 103 min. Moovit will show you the directions from Les Ulis to Chessy by RER and bus, so no matter how you choose to travel in Paris – you will always have plenty of easy options.

RER And Bus schedule from Les Ulis to Chessy

To check the RER and bus schedule from Les Ulis to Chessy using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Les Ulis) and destination (Chessy), then select the desired date and time of travel. Moovit will show all available RER and bus routes, estimated travel times, and any required transfers. You can view detailed departure and arrival times for each RER and bus, as well as real-time updates for delays or changes. Use this information to plan your trip and stay up to date with the latest RER and bus schedules.

Related Routes

Alternative route from Les Ulis to Chessy by RER and bus via 4609, B and A

To get from Les Ulis to Chessy in Paris, you’ll need to take one bus line and 2 RER lines: take the 4609 bus from Rond-Point de Mondétour station to Gare du Guichet station. Next, you’ll have to switch to the B RER and finally take the A RER from Châtelet Les Halles station to Marne-La-Vallée Chessy station. The total trip duration for this route is approximately 1 hr 45 min. The RER and bus schedule from Les Ulis may change. We recommend you check the updated RER and bus schedule to Chessy on the Moovit app.

105min
Walk to bus station
Bus - 46094609
RER - B
RER - B
RER - A
RER - A
Walk to Chessy
Leaves from Rond-Point de Mondétour

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Rond-Point de Mondétour
    510 m • 7 min
  • 2
    Bus - 46094609
    Wait for bus
    4609
    Christ de Saclay
  • 3
    Ride to bus station
    Ride to bus station
    Gare du Guichet
    8 min
  • 4
    Walk to RER station
    Walk to RER station
    Le Guichet
    250 m • 4 min
  • 5
    RER - B
    Wait for RER
    B
    Aéroport Charles de Gaulle 2 (Terminal 2)
  • 6
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    33 min
  • 7
    RER - A
    Wait for RER
    A
    Marne-La-Vallée Chessy
  • 8
    Ride to RER station
    Ride to RER station
    Marne-La-Vallée Chessy
    42 min
  • 9
    Walk to Chessy
    Walk to
    Chessy
    250 m • 4 min
*Duration based on 8am traffic

Questions & Answers

  • What is the fastest way to get from Les Ulis to Chessy?

    The fastest way takes 103 minutes, using Bus line 4603, RER line B, RER line A.

  • What is the alternative route to get from Les Ulis to Chessy?

    The alternative route takes 105 minutes, using Bus line 4609, RER line B, RER line A.

  • Is there a direct bus between Les Ulis and Chessy in Paris?

    No, you’ll have to take one bus line and 2 RER lines in total. The total travelling time is 1 hr 43 min.

  • Which bus line goes from Les Ulis to Chessy in Paris?

    The 4603 bus line goes from Rond-Point de Mondétour station near Les Ulis to Gare D'Orsay-Ville station. From there you’ll have to take 2 RER lines till Gare D'Orsay-Ville station near Chessy in Paris.

  • How long does it take to travel from Les Ulis to Chessy in Paris by bus and RER?

    The total travel time between Les Ulis and Chessy in Paris by bus and RER is about 1 hr 43 min.

  • Where do I get on the bus near Les Ulis to get to Chessy in Paris?

    Get on the 4603 bus from the Rond-Point de Mondétour stop near Les Ulis in Paris.

  • Where do I get off the bus when travelling between Les Ulis and Chessy in Paris?

    Get off the bus at the Gare D'Orsay-Ville station, which is closest to Chessy in Paris.

Popular Routes