How to get from Cergy to Saclay by RER and bus?

From Cergy to Saclay by RER and bus

To get from Cergy to Saclay in Paris, you’ll need to take 2 RER lines and one bus line: take the A RER from Cergy Préfecture station to Châtelet Les Halles station. Next, you’ll have to switch to the B RER and finally take the 9 bus from Gare du Guichet station to Christ de Saclay station. The total trip duration for this route is approximately 2 hr 6 min. The RER and bus schedule from Cergy may change. We recommend you check the updated RER and bus schedule to Saclay on the Moovit app.

126min
Walk to RER stationRER - A
RER - A
RER - B
RER - B
Bus - 99
Walk to Saclay
Leaves from Cergy Préfecture

Step by Step

  • 1
    Walk to RER station
    Walk to RER station
    Cergy Préfecture
    830 m • 11 min
  • 2
    RER - A
    Wait for RER
    A
    Boissy-Saint-Léger
  • 3
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    41 min
  • 4
    RER - B
    Wait for RER
    B
    Saint-Rémy-Lès-Chevreuse
  • 5
    Ride to RER station
    Ride to RER station
    Le Guichet
    40 min
  • 6
    Walk to bus station
    Walk to bus station
    Gare du Guichet
    250 m • 4 min
  • 7
    Bus - 99
    Wait for bus
    9
    Christ de Saclay
  • 8
    Ride to bus station
    Ride to bus station
    Christ de Saclay
    14 min
  • 9
    Walk to Saclay
    Walk to
    Saclay
    160 m • 3 min
*Duration based on 8am traffic

Alternative route from Cergy to Saclay by RER and bus via A, B and 91-06

To get from Cergy to Saclay in Paris, you’ll need to take 2 RER lines and one bus line: take the A RER from Cergy Préfecture station to Châtelet Les Halles station. Next, you’ll have to switch to the B RER and finally take the 91-06 bus from Gare de Massy-Palaiseau station to Christ de Saclay station. The total trip duration for this route is approximately 2 hr 14 min. The RER and bus schedule from Cergy may change. We recommend you check the updated RER and bus schedule to Saclay on the Moovit app.

134min
Walk to RER stationRER - A
RER - A
RER - B
RER - B
Bus - 91-0691-06
Walk to Saclay
Leaves from Cergy Préfecture

Step by Step

  • 1
    Walk to RER station
    Walk to RER station
    Cergy Préfecture
    830 m • 11 min
  • 2
    RER - A
    Wait for RER
    A
    Boissy-Saint-Léger
  • 3
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    41 min
  • 4
    RER - B
    Wait for RER
    B
    Saint-Rémy-Lès-Chevreuse
  • 5
    Ride to RER station
    Ride to RER station
    Massy - Palaiseau
    30 min
  • 6
    Walk to bus station
    Walk to bus station
    Gare de Massy-Palaiseau
    400 m • 6 min
  • 7
    Bus - 91-0691-06
    Wait for bus
    91-06
    Christ de Saclay
  • 8
    Ride to bus station
    Ride to bus station
    Christ de Saclay
    30 min
  • 9
    Walk to Saclay
    Walk to
    Saclay
    140 m • 2 min
*Duration based on 8am traffic
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Public transit directions from Cergy to Saclay

The distance between Cergy, Paris and Saclay, Paris is approximately 65.46 km, which can typically be travelled in 126 min. Moovit will show you the directions from Cergy to Saclay 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 Cergy to Saclay

To check the RER and bus schedule from Cergy to Saclay using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Cergy) and destination (Saclay), 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 Cergy to Saclay by RER and bus via A, B and 91-06

To get from Cergy to Saclay in Paris, you’ll need to take 2 RER lines and one bus line: take the A RER from Cergy Préfecture station to Châtelet Les Halles station. Next, you’ll have to switch to the B RER and finally take the 91-06 bus from Gare de Massy-Palaiseau station to Christ de Saclay station. The total trip duration for this route is approximately 2 hr 14 min. The RER and bus schedule from Cergy may change. We recommend you check the updated RER and bus schedule to Saclay on the Moovit app.

134min
Walk to RER stationRER - A
RER - A
RER - B
RER - B
Bus - 91-0691-06
Walk to Saclay
Leaves from Cergy Préfecture

Step by Step

  • 1
    Walk to RER station
    Walk to RER station
    Cergy Préfecture
    830 m • 11 min
  • 2
    RER - A
    Wait for RER
    A
    Boissy-Saint-Léger
  • 3
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    41 min
  • 4
    RER - B
    Wait for RER
    B
    Saint-Rémy-Lès-Chevreuse
  • 5
    Ride to RER station
    Ride to RER station
    Massy - Palaiseau
    30 min
  • 6
    Walk to bus station
    Walk to bus station
    Gare de Massy-Palaiseau
    400 m • 6 min
  • 7
    Bus - 91-0691-06
    Wait for bus
    91-06
    Christ de Saclay
  • 8
    Ride to bus station
    Ride to bus station
    Christ de Saclay
    30 min
  • 9
    Walk to Saclay
    Walk to
    Saclay
    140 m • 2 min
*Duration based on 8am traffic

Questions & Answers

  • What is the fastest way to get from Cergy to Saclay?

    The fastest way takes 126 minutes, using RER line A, RER line B, Bus line 9.

  • What is the alternative route to get from Cergy to Saclay?

    The alternative route takes 134 minutes, using RER line A, RER line B, Bus line 91-06.

  • Is there a direct RER between Cergy and Saclay in Paris?

    No, you’ll have to take 2 RER lines and one bus line in total. The total travelling time is 2 hr 6 min.

  • Which RER line goes from Cergy to Saclay in Paris?

    The A RER line goes from Cergy Préfecture station near Cergy to Boissy-Saint-Léger station. From there you’ll have to take one RER line and one bus line till Boissy-Saint-Léger station near Saclay in Paris.

  • How long does it take to travel from Cergy to Saclay in Paris by RER and bus?

    The total travel time between Cergy and Saclay in Paris by RER and bus is about 2 hr 6 min.

  • Where do I get on the RER near Cergy to get to Saclay in Paris?

    Get on the A RER from the Cergy Préfecture station near Cergy in Paris.

  • Where do I get off the RER when travelling between Cergy and Saclay in Paris?

    Get off the RER at the Boissy-Saint-Léger stop, which is closest to Saclay in Paris.

Popular Routes