The average bus between Osny and Les Ulis takes 3h 42m and the fastest bus takes 2h 39m. There is a bus service every few hours from Osny to Les Ulis. 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 Osny and Les Ulis. The earliest departure is at 6:12 AM in the morning, and the last departure from Osny is at 8:51 PM which arrives into Les Ulis at 8:24 AM. All services require a transfer at Gare de Cergy Préfecture - Quai B and take an average of 3h 42m. The schedules shown below are for the next available departures.



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3h 31m • 3 changesWant to know about travelling from Osny to Les Ulis? 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 Osny to Les Ulis. However, there are services departing from Gare de Cergy Préfecture - Quai O station and arriving at Christ de Saclay station via Saint-Quentin - Gare routière Paul Delouvrier station. The journey, including transfers, takes approximately 3h 42m.
Osny to Les Ulis bus services, operated by Lignes Île-de-France Ouest, depart from Gare de Cergy Préfecture - Quai O station.
Osny to Les Ulis bus services, operated by Lignes Île-de-France Ouest, arrive at Christ de Saclay station.
The distance between Osny and Les Ulis is 43.9 km. The road distance is 57 km.
You can take a bus from William Thornley to Mairie des Ulis - Place de la Liberté via Gare de Cergy Préfecture - Quai B, Gare de Cergy Préfecture - Quai O, Saint-Quentin - Gare routière Paul Delouvrier, Saint-Quentin - Gare Routière des Prés, and Christ de Saclay in around 3h 38m.