The average bus between Trappes and Orsay takes 1h 36m and the fastest bus takes 1h 12m. There is an hourly bus service from Trappes to Orsay. 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 Trappes and Orsay. The earliest departure is at 12:45 AM at night, and the last departure from Trappes is at 8:44 PM which arrives into Orsay at 10:03 PM. All services require a transfer at Saint-Quentin - Souterrain quai K and take an average of 1h 36m. The schedules shown below are for the next available departures.


1h 54m • 2 changes


1h 26m • 2 changes


1h 24m • 2 changes


1h 27m • 2 changes


7h 33m • 2 changes


2h 10m • 2 changes


2h 13m • 2 changes


2h 14m • 2 changes


5h 26m • 2 changes


1h 28m • 2 changes


1h 37m • 2 changes


1h 14m • 2 changes
Want to know about travelling from Trappes to Orsay? 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 Trappes to Orsay. However, there are services departing from Trappes station and arriving at Orsay station via Christ de Saclay. The journey, including transfers, takes approximately 1h 36m.
Trappes to Orsay bus services, operated by Saint-Quentin-en-Yvelines, depart from Saint-Quentin - Gare Routière des Prés station.
Trappes to Orsay bus services, operated by Saint-Quentin-en-Yvelines, arrive at Mairie - Hôpital - Orsay RER station.
The distance between Trappes and Orsay is 15.2 km. The road distance is 30 km.
You can take a bus from Chambre de Commerce et d'Industrie to Mairie - Hôpital - Orsay RER via Saint-Quentin - Souterrain quai K, Saint-Quentin - Gare Routière des Prés, and Christ de Saclay in around 1h 34m.