The average train between Brussels and Orsay takes 2h 19m and the fastest train takes 2h 7m. There is a train service every few hours from Brussels 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.
Trains run hourly between Brussels and Orsay. The earliest departure is at 6:33 AM in the morning, and the last departure from Brussels is at 10:13 PM which arrives into Orsay at 12:28 AM. All services require a transfer, and take on average 2h 19m. The schedules shown below are for the next available departures.

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2h 17m • 1 changeWant to know about travelling from Brussels 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 train from Brussels to Orsay. However, there are services departing from Brussel-Zuid / Bruxelles-Midi station and arriving at Orsay - Ville station via Paris Nord station. The journey, including transfers, takes approximately 2h 19m.
Brussels to Orsay train services, operated by Eurostar, depart from Brussel-Zuid / Bruxelles-Midi station.
Brussels to Orsay train services, operated by Réseau Express Régional (RER Paris), arrive at Orsay - Ville station.
The distance between Brussels and Orsay is 285.5 km. The road distance is 326 km.
You can take a train from Brussel-Zuid / Bruxelles-Midi to Orsay - Ville via Paris Nord in around 2h 13m.