How to get from Santeny to Montesson by RER and bus?

From Santeny to Montesson by RER and bus

To get from Santeny to Montesson in Paris, take the 3121 bus from Libération station to Gare de Boissy-Saint-Léger station. Next, take the A RER from Boissy-Saint-Léger station to Le Vésinet - Le Pecq station. The total trip duration for this route is approximately 1 hr 27 min. The RER and bus schedule from Santeny may change. We recommend you check the updated RER and bus schedule to Montesson on the Moovit app.

87min
Walk to bus station
Bus - 31213121
RER - A
RER - A
Walk to Montesson
Leaves from Libération

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Libération
    10 m • 1 min
  • 2
    Bus - 31213121
    Wait for bus
    3121
    Gare de Boissy-Saint-Léger
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Boissy-Saint-Léger
    11 min
  • 4
    Walk to RER station
    Walk to RER station
    Boissy-Saint-Léger
    70 m • 1 min
  • 5
    RER - A
    Wait for RER
    A
    Saint-Germain-En-Laye
  • 6
    Ride to RER station
    Ride to RER station
    Le Vésinet - Le Pecq
    57 min
  • 7
    Walk to Montesson
    Walk to
    Montesson
    960 m • 13 min
*Duration based on 8am traffic

Alternative route from Santeny to Montesson by RER and bus via 451 and A

To get from Santeny to Montesson in Paris, take the 451 bus from Le Marais station to Gare de Boissy-Saint-Léger station. Next, take the A RER from Boissy-Saint-Léger station to Le Vésinet - Le Pecq station. The total trip duration for this route is approximately 1 hr 49 min. The RER and bus schedule from Santeny may change. We recommend you check the updated RER and bus schedule to Montesson on the Moovit app.

109min
Walk to bus station
Bus - 451451
RER - A
RER - A
Walk to Montesson
Leaves from Le Marais

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Le Marais
    350 m • 5 min
  • 2
    Bus - 451451
    Wait for bus
    451
    Gare de Boissy-Saint-Léger
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Boissy-Saint-Léger
    30 min
  • 4
    Walk to RER station
    Walk to RER station
    Boissy-Saint-Léger
    90 m • 2 min
  • 5
    RER - A
    Wait for RER
    A
    Saint-Germain-En-Laye
  • 6
    Ride to RER station
    Ride to RER station
    Le Vésinet - Le Pecq
    57 min
  • 7
    Walk to Montesson
    Walk to
    Montesson
    960 m • 13 min
*Duration based on 8am traffic
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Public transit directions from Santeny to Montesson

The distance between Santeny, Paris and Montesson, Paris is approximately 50.24 km, which can typically be travelled in 87 min. Moovit will show you the directions from Santeny to Montesson 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 Santeny to Montesson

To check the RER and bus schedule from Santeny to Montesson using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Santeny) and destination (Montesson), 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 Santeny to Montesson by RER and bus via 451 and A

To get from Santeny to Montesson in Paris, take the 451 bus from Le Marais station to Gare de Boissy-Saint-Léger station. Next, take the A RER from Boissy-Saint-Léger station to Le Vésinet - Le Pecq station. The total trip duration for this route is approximately 1 hr 49 min. The RER and bus schedule from Santeny may change. We recommend you check the updated RER and bus schedule to Montesson on the Moovit app.

109min
Walk to bus station
Bus - 451451
RER - A
RER - A
Walk to Montesson
Leaves from Le Marais

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    Le Marais
    350 m • 5 min
  • 2
    Bus - 451451
    Wait for bus
    451
    Gare de Boissy-Saint-Léger
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Boissy-Saint-Léger
    30 min
  • 4
    Walk to RER station
    Walk to RER station
    Boissy-Saint-Léger
    90 m • 2 min
  • 5
    RER - A
    Wait for RER
    A
    Saint-Germain-En-Laye
  • 6
    Ride to RER station
    Ride to RER station
    Le Vésinet - Le Pecq
    57 min
  • 7
    Walk to Montesson
    Walk to
    Montesson
    960 m • 13 min
*Duration based on 8am traffic

Questions & Answers

  • What is the fastest way to get from Santeny to Montesson?

    The fastest way takes 87 minutes, using Bus line 3121, RER line A.

  • What is the alternative route to get from Santeny to Montesson?

    The alternative route takes 109 minutes, using Bus line 451, RER line A.

  • Is there a direct bus between Santeny and Montesson in Paris?

    No, you’ll have to take one bus line and one RER line in total. The total travelling time is 1 hr 27 min.

  • Which bus line goes from Santeny to Montesson in Paris?

    The 3121 bus line goes from Libération station near Santeny to Gare de Boissy-Saint-Léger station. From there you’ll have to take one RER line till Gare de Boissy-Saint-Léger station near Montesson in Paris.

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

    The total travel time between Santeny and Montesson in Paris by bus and RER is about 1 hr 27 min.

  • Where do I get on the bus near Santeny to get to Montesson in Paris?

    Get on the 3121 bus from the Libération stop near Santeny in Paris.

  • Where do I get off the bus when travelling between Santeny and Montesson in Paris?

    Get off the bus at the Gare de Boissy-Saint-Léger station, which is closest to Montesson in Paris.

Popular Routes