The average bus between Clamart and Osny takes 3h 9m and the fastest bus takes 2h 4m. There is a bus service every few hours from Clamart to Osny. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run hourly between Clamart and Osny. The earliest departure is at 6:37 AM in the morning, and the last departure from Clamart is at 9:18 PM which arrives into Osny at 7:05 AM. All services require a transfer at Saint-Quentin - Gare P. Delouvrier W and take an average of 3h 9m. The schedules shown below are for the next available departures.


2h 10m • 2 changes

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3h 9m • 2 changes

2h 48m • 2 changes

3h 2m • 2 changes

2h 32m • 2 changesWant to know about travelling from Clamart to Osny? 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 bus from Clamart to Osny. However, there are services departing from Division Leclerc station and arriving at Gare de Cergy Préfecture - Quai O station via Saint-Quentin - Gare P. Delouvrier W station. The journey, including transfers, takes approximately 3h 9m.
Clamart to Osny bus services, operated by Lignes Île-de-France Ouest, depart from Division Leclerc station.
Clamart to Osny bus services, operated by Lignes Île-de-France Ouest, arrive at Gare de Cergy Préfecture - Quai O station.
The distance between Clamart and Osny is 33.2 km. The road distance is 43 km.
You can take a bus from Division Leclerc to William Thornley via Saint-Quentin - Gare P. Delouvrier W, Saint-Quentin - Gare routière Paul Delouvrier, Gare de Cergy Préfecture - Quai O, and Gare de Cergy Préfecture - Quai H in around 2h 52m.