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

From Longjumeau to Osny by RER and bus

To get from Longjumeau to Osny in Paris, you’ll need to take 2 bus lines and one RER line: take the N21 bus from Division Leclerc station to Châtelet station. Next, you’ll have to switch to the A RER and finally take the 1206 bus from Saint-Christophe RER station to Réservoir station. The total trip duration for this route is approximately 3 hr 35 min. The RER and bus schedule from Longjumeau may change. We recommend you check the updated RER and bus schedule to Osny on the Moovit app.

215min
Walk to bus stationBus - N21
Bus - N21
RER - A
RER - A
Bus - 12061206
Walk to Osny
Leaves from Division Leclerc

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Division Leclerc
    1.64 km • 21 min
  • 2
    Bus - N21N21
    Wait for bus
    N21
    Châtelet
  • 3
    Ride to bus station
    Ride to bus station
    Châtelet
    77 min
  • 4
    Walk to RER station
    Walk to RER station
    Châtelet Les Halles
    680 m • 9 min
  • 5
    RER - A
    Wait for RER
    A
    Cergy Le Haut
  • 6
    Ride to RER station
    Ride to RER station
    Cergy Saint-Christophe
    42 min
  • 7
    Walk to bus station
    Walk to bus station
    Saint-Christophe RER
    50 m • 1 min
  • 8
    Bus - 12061206
    Wait for bus
    1206
    Gare de Pontoise
  • 9
    Ride to bus station
    Ride to bus station
    Réservoir
    17 min
  • 10
    Walk to Osny
    Walk to
    Osny
    50 m • 1 min
*Duration based on 8am traffic

Alternative route from Longjumeau to Osny by RER and bus via N21, A and 1242

To get from Longjumeau to Osny in Paris, you’ll need to take 2 bus lines and one RER line: take the N21 bus from Division Leclerc station to Châtelet station. Next, you’ll have to switch to the A RER and finally take the 1242 bus from Gare de Cergy Préfecture - Quai H station to Lycée station. The total trip duration for this route is approximately 3 hr 57 min. The RER and bus schedule from Longjumeau may change. We recommend you check the updated RER and bus schedule to Osny on the Moovit app.

237min
Walk to bus stationBus - N21
Bus - N21
RER - A
RER - A
Bus - 12421242
Walk to Osny
Leaves from Division Leclerc

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Division Leclerc
    1.64 km • 21 min
  • 2
    Bus - N21N21
    Wait for bus
    N21
    Châtelet
  • 3
    Ride to bus station
    Ride to bus station
    Châtelet
    77 min
  • 4
    Walk to RER station
    Walk to RER station
    Châtelet Les Halles
    680 m • 9 min
  • 5
    RER - A
    Wait for RER
    A
    Cergy Le Haut
  • 6
    Ride to RER station
    Ride to RER station
    Cergy Préfecture
    38 min
  • 7
    Walk to bus station
    Walk to bus station
    Gare de Cergy Préfecture - Quai H
    80 m • 2 min
  • 8
    Bus - 12421242
    Wait for bus
    1242
    Clinique Sainte Marie
  • 9
    Ride to bus station
    Ride to bus station
    Lycée
    22 min
  • 10
    Walk to Osny
    Walk to
    Osny
    360 m • 5 min
*Duration based on 8am traffic
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Public transit directions from Longjumeau to Osny

The distance between Longjumeau, Paris and Osny, Paris is approximately 71.62 km, which can typically be travelled in 215 min. Moovit will show you the directions from Longjumeau to Osny 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 Longjumeau to Osny

To check the RER and bus schedule from Longjumeau to Osny using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Longjumeau) and destination (Osny), 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 Longjumeau to Osny by RER and bus via N21, A and 1242

To get from Longjumeau to Osny in Paris, you’ll need to take 2 bus lines and one RER line: take the N21 bus from Division Leclerc station to Châtelet station. Next, you’ll have to switch to the A RER and finally take the 1242 bus from Gare de Cergy Préfecture - Quai H station to Lycée station. The total trip duration for this route is approximately 3 hr 57 min. The RER and bus schedule from Longjumeau may change. We recommend you check the updated RER and bus schedule to Osny on the Moovit app.

237min
Walk to bus stationBus - N21
Bus - N21
RER - A
RER - A
Bus - 12421242
Walk to Osny
Leaves from Division Leclerc

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Division Leclerc
    1.64 km • 21 min
  • 2
    Bus - N21N21
    Wait for bus
    N21
    Châtelet
  • 3
    Ride to bus station
    Ride to bus station
    Châtelet
    77 min
  • 4
    Walk to RER station
    Walk to RER station
    Châtelet Les Halles
    680 m • 9 min
  • 5
    RER - A
    Wait for RER
    A
    Cergy Le Haut
  • 6
    Ride to RER station
    Ride to RER station
    Cergy Préfecture
    38 min
  • 7
    Walk to bus station
    Walk to bus station
    Gare de Cergy Préfecture - Quai H
    80 m • 2 min
  • 8
    Bus - 12421242
    Wait for bus
    1242
    Clinique Sainte Marie
  • 9
    Ride to bus station
    Ride to bus station
    Lycée
    22 min
  • 10
    Walk to Osny
    Walk to
    Osny
    360 m • 5 min
*Duration based on 8am traffic

Questions & Answers

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

    The fastest way takes 215 minutes, using Bus line N21, RER line A, Bus line 1206.

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

    The alternative route takes 237 minutes, using Bus line N21, RER line A, Bus line 1242.

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

    No, you’ll have to take 2 bus lines and one RER line in total. The total travelling time is 3 hr 35 min.

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

    The N21 bus line goes from Division Leclerc station near Longjumeau to Châtelet station. From there you’ll have to take one bus line and one RER line till Châtelet station near Osny in Paris.

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

    The total travel time between Longjumeau and Osny in Paris by bus and RER is about 3 hr 35 min.

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

    Get on the N21 bus from the Division Leclerc stop near Longjumeau in Paris.

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

    Get off the bus at the Châtelet stop, which is closest to Osny in Paris.

Popular Routes