The average train between Montesson and Sannois takes 56 min and the fastest train takes 42 min. The train runs at least 4 times per hour from Montesson to Sannois. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 15 minutes between Montesson and Sannois. The earliest departure is at 12:20 AM at night, and the last departure from Montesson is at 11:47 PM which arrives into Sannois at 12:50 AM. All services require a transfer at Nanterre Université and take an average of 56 min. The schedules shown below are for the next available departures.


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1h • 2 changesWant to know about travelling from Montesson to Sannois? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct train from Montesson to Sannois. However, there are services departing from Le Vésinet - Le Pecq station and arriving at Sannois station via Nanterre Université station and Asnières-sur-Seine station. The journey, including transfers, takes approximately 56 min.
Montesson to Sannois train services, operated by Réseau Express Régional (RER Paris), depart from Le Vésinet - Le Pecq station.
Montesson to Sannois train services, operated by Transilien – SNCF Voyageurs, arrive at Sannois station.
The distance between Montesson and Sannois is 10.4 km. The road distance is 13 km.
You can take a train from Le Vésinet - Le Pecq to Sannois via Nanterre Université and Asnières-sur-Seine in around 48 min.