How to get from Gressy to Poissy by RER and bus?

From Gressy to Poissy by RER and bus

To get from Gressy to Poissy in Paris, you’ll need to take one bus line and 2 RER lines: take the 7720 bus from La Rosée station to Gare de Roissypole - Aéroport Cdg1 Terminal 3 (C4) station. Next, you’ll have to switch to the B RER and finally take the A RER from Châtelet Les Halles station to Poissy station. The total trip duration for this route is approximately 1 hr 57 min. The RER and bus schedule from Gressy may change. We recommend you check the updated RER and bus schedule to Poissy on the Moovit app.

117min
Walk to bus station
Bus - 77207720
RER - B
RER - B
RER - A
RER - A
Leaves from La Rosée

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    La Rosée
    1.66 km • 22 min
  • 2
    Bus - 77207720
    Wait for bus
    7720
    Gare de Roissypole - Aéroport Cdg1 Terminal 3 (C4)
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Roissypole - Aéroport Cdg1 Terminal 3 (C4)
    15 min
  • 4
    Walk to RER station
    Walk to RER station
    Aéroport Cdg 1 (Terminal 3)
    240 m • 4 min
  • 5
    RER - B
    Wait for RER
    B
    Massy - Palaiseau
  • 6
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    32 min
  • 7
    RER - A
    Wait for RER
    A
    Poissy
  • 8
    Ride to RER station Poissy
    Ride to RER station
    Poissy
    34 min
*Duration based on 8am traffic

Alternative route from Gressy to Poissy by RER and bus via 2120, B and A

To get from Gressy to Poissy in Paris, you’ll need to take one bus line and 2 RER lines: take the 2120 bus from La Rosée station to Gare de Mitry - Claye station. Next, you’ll have to switch to the B RER and finally take the A RER from Châtelet Les Halles station to Poissy station. The total trip duration for this route is approximately 1 hr 59 min. The RER and bus schedule from Gressy may change. We recommend you check the updated RER and bus schedule to Poissy on the Moovit app.

119min
Walk to bus station
Bus - 21202120
RER - B
RER - B
RER - A
RER - A
Leaves from La Rosée

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    La Rosée
    1.66 km • 22 min
  • 2
    Bus - 21202120
    Wait for bus
    2120
    Gare de Mitry - Claye
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Mitry - Claye
    7 min
  • 4
    Walk to RER station
    Walk to RER station
    Mitry - Claye
    50 m • 1 min
  • 5
    RER - B
    Wait for RER
    B
    Robinson
  • 6
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    36 min
  • 7
    RER - A
    Wait for RER
    A
    Poissy
  • 8
    Ride to RER station Poissy
    Ride to RER station
    Poissy
    34 min
*Duration based on 8am traffic
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Public transit directions from Gressy to Poissy

The distance between Gressy, Paris and Poissy, Paris is approximately 72.8 km, which can typically be travelled in 117 min. Moovit will show you the directions from Gressy to Poissy 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 Gressy to Poissy

To check the RER and bus schedule from Gressy to Poissy using the Moovit app, first download and open the app on your smartphone. Enter your starting point (Gressy) and destination (Poissy), 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 Gressy to Poissy by RER and bus via 2120, B and A

To get from Gressy to Poissy in Paris, you’ll need to take one bus line and 2 RER lines: take the 2120 bus from La Rosée station to Gare de Mitry - Claye station. Next, you’ll have to switch to the B RER and finally take the A RER from Châtelet Les Halles station to Poissy station. The total trip duration for this route is approximately 1 hr 59 min. The RER and bus schedule from Gressy may change. We recommend you check the updated RER and bus schedule to Poissy on the Moovit app.

119min
Walk to bus station
Bus - 21202120
RER - B
RER - B
RER - A
RER - A
Leaves from La Rosée

Step by Step

  • 1
    Walk to bus station
    Walk to bus station
    La Rosée
    1.66 km • 22 min
  • 2
    Bus - 21202120
    Wait for bus
    2120
    Gare de Mitry - Claye
  • 3
    Ride to bus station
    Ride to bus station
    Gare de Mitry - Claye
    7 min
  • 4
    Walk to RER station
    Walk to RER station
    Mitry - Claye
    50 m • 1 min
  • 5
    RER - B
    Wait for RER
    B
    Robinson
  • 6
    Ride to RER station
    Ride to RER station
    Châtelet Les Halles
    36 min
  • 7
    RER - A
    Wait for RER
    A
    Poissy
  • 8
    Ride to RER station Poissy
    Ride to RER station
    Poissy
    34 min
*Duration based on 8am traffic

Questions & Answers

  • What is the fastest way to get from Gressy to Poissy?

    The fastest way takes 117 minutes, using Bus line 7720, RER line B, RER line A.

  • What is the alternative route to get from Gressy to Poissy?

    The alternative route takes 119 minutes, using Bus line 2120, RER line B, RER line A.

  • Is there a direct bus between Gressy and Poissy in Paris?

    No, you’ll have to take one bus line and 2 RER lines in total. The total travelling time is 1 hr 57 min.

  • Which bus line goes from Gressy to Poissy in Paris?

    The 7720 bus line goes from La Rosée station near Gressy to Gare de Roissypole - Aéroport Cdg1 Terminal 3 (C4) station. From there you’ll have to take 2 RER lines till Gare de Roissypole - Aéroport Cdg1 Terminal 3 (C4) station near Poissy in Paris.

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

    The total travel time between Gressy and Poissy in Paris by bus and RER is about 1 hr 57 min.

  • Where do I get on the bus near Gressy to get to Poissy in Paris?

    Get on the 7720 bus from the La Rosée stop near Gressy in Paris.

  • Where do I get off the bus when travelling between Gressy and Poissy in Paris?

    Get off the bus at the Gare de Roissypole - Aéroport Cdg1 Terminal 3 (C4) station, which is closest to Poissy in Paris.

Popular Routes