How to get from Osny to Champlan by RER and bus?

From Osny to Champlan by RER and bus

To get from Osny to Champlan in Paris, you’ll need to take one bus line and 2 RER lines: take the 1206 bus from Réservoir station to Gare de Cergy Saint-Christophe RER station. Next, you’ll have to switch to the A RER and finally take the B RER from Châtelet Les Halles station to Palaiseau station. The total trip duration for this route is approximately 2 hr 15 min. The RER and bus schedule from Osny may change. We recommend you check the updated RER and bus schedule to Champlan on the Moovit app.

135min
Walk to bus station
Bus - 12061206
RER - A
RER - A
RER - B
RER - B
Walk to Champlan
Leaves from Réservoir

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Réservoir
    190 m • 3 min
  • 2
    Bus - 12061206
    Wait for bus
    1206
    Cergy Le Haut RER
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Cergy Saint-Christophe RER
    14 min
  • 4
    Walk to RER station
    Walk to RER station
    Cergy Saint-Christophe
    50 m • 1 min
  • 5
    RER - A
    Wait for RER
    A
    Marne-La-Vallée Chessy
  • 6
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    43 min
  • 7
    RER - B
    Wait for RER
    B
    Saint-Rémy-Lès-Chevreuse
  • 8
    Ride to RER station
    Ride to RER station
    Palaiseau
    27 min
  • 9
    Walk to Champlan
    Walk to
    Champlan
    1.71 km • 22 min
*Duration based on 8am traffic

Alternative route from Osny to Champlan by RER and bus via 1242, A and B

To get from Osny to Champlan in Paris, you’ll need to take one bus line and 2 RER lines: take the 1242 bus from Lycée station to Gare de Cergy Préfecture - Quai B station. Next, you’ll have to switch to the A RER and finally take the B RER from Châtelet Les Halles station to Palaiseau station. The total trip duration for this route is approximately 2 hr 30 min. The RER and bus schedule from Osny may change. We recommend you check the updated RER and bus schedule to Champlan on the Moovit app.

150min
Walk to bus station
Bus - 12421242
RER - A
RER - A
RER - B
RER - B
Walk to Champlan
Leaves from Lycée

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Lycée
    420 m • 6 min
  • 2
    Bus - 12421242
    Wait for bus
    1242
    Gare de Cergy Préfecture - Quai B
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Cergy Préfecture - Quai B
    21 min
  • 4
    Walk to RER station
    Walk to RER station
    Cergy Préfecture
    150 m • 3 min
  • 5
    RER - A
    Wait for RER
    A
    Marne-La-Vallée Chessy
  • 6
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    39 min
  • 7
    RER - B
    Wait for RER
    B
    Saint-Rémy-Lès-Chevreuse
  • 8
    Ride to RER station
    Ride to RER station
    Palaiseau
    27 min
  • 9
    Walk to Champlan
    Walk to
    Champlan
    1.71 km • 22 min
*Duration based on 8am traffic
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Public transit directions from Osny to Champlan

The distance between Osny, Paris and Champlan, Paris is approximately 64.51 km, which can typically be travelled in 135 min. Moovit will show you the directions from Osny to Champlan 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 Osny to Champlan

To check the RER and bus schedule from Osny to Champlan using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Osny) and destination (Champlan), 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 Osny to Champlan by RER and bus via 1242, A and B

To get from Osny to Champlan in Paris, you’ll need to take one bus line and 2 RER lines: take the 1242 bus from Lycée station to Gare de Cergy Préfecture - Quai B station. Next, you’ll have to switch to the A RER and finally take the B RER from Châtelet Les Halles station to Palaiseau station. The total trip duration for this route is approximately 2 hr 30 min. The RER and bus schedule from Osny may change. We recommend you check the updated RER and bus schedule to Champlan on the Moovit app.

150min
Walk to bus station
Bus - 12421242
RER - A
RER - A
RER - B
RER - B
Walk to Champlan
Leaves from Lycée

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Lycée
    420 m • 6 min
  • 2
    Bus - 12421242
    Wait for bus
    1242
    Gare de Cergy Préfecture - Quai B
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Cergy Préfecture - Quai B
    21 min
  • 4
    Walk to RER station
    Walk to RER station
    Cergy Préfecture
    150 m • 3 min
  • 5
    RER - A
    Wait for RER
    A
    Marne-La-Vallée Chessy
  • 6
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    39 min
  • 7
    RER - B
    Wait for RER
    B
    Saint-Rémy-Lès-Chevreuse
  • 8
    Ride to RER station
    Ride to RER station
    Palaiseau
    27 min
  • 9
    Walk to Champlan
    Walk to
    Champlan
    1.71 km • 22 min
*Duration based on 8am traffic

Questions & Answers

  • What is the fastest way to get from Osny to Champlan?

    The fastest way takes 135 minutes, using Bus line 1206, RER line A, RER line B.

  • What is the alternative route to get from Osny to Champlan?

    The alternative route takes 150 minutes, using Bus line 1242, RER line A, RER line B.

  • Is there a direct bus between Osny and Champlan in Paris?

    No, you’ll have to take one bus line and 2 RER lines in total. The total travelling time is 2 hr 15 min.

  • Which bus line goes from Osny to Champlan in Paris?

    The 1206 bus line goes from Réservoir station near Osny to Cergy Le Haut RER station. From there you’ll have to take 2 RER lines till Cergy Le Haut RER station near Champlan in Paris.

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

    The total travel time between Osny and Champlan in Paris by bus and RER is about 2 hr 15 min.

  • Where do I get on the bus near Osny to get to Champlan in Paris?

    Get on the 1206 bus from the Réservoir stop near Osny in Paris.

  • Where do I get off the bus when travelling between Osny and Champlan in Paris?

    Get off the bus at the Cergy Le Haut RER station, which is closest to Champlan in Paris.

Popular Routes