The average bus between Cachan and Boulogne-Billancourt takes 57 min and the fastest bus takes 39 min. The bus runs at least 5 times per hour from Cachan to Boulogne-Billancourt. 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 every 15 minutes between Cachan and Boulogne-Billancourt. The earliest departure is at 12:29 PM in the afternoon, and the last departure from Cachan is at 8:46 PM which arrives into Boulogne-Billancourt at 9:42 PM. All services require a transfer, and take on average 57 min. The schedules shown below are for the next available departures.

54 min • 1 change

55 min • 1 change

57 min • 1 change

59 min • 1 change
Want to know about travelling from Cachan to Boulogne-Billancourt? 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 Cachan to Boulogne-Billancourt. However, there are services departing from Cachan station and arriving at Boulogne-Billancourt station via Porte d'Orléans. The journey, including transfers, takes approximately 57 min.
Cachan to Boulogne-Billancourt bus services, operated by Pompadour, depart from Wilson - Provigny station.
Cachan to Boulogne-Billancourt bus services, operated by Pompadour, arrive at Hôtel de Ville station.
The distance between Cachan and Boulogne-Billancourt is 8.2 km. The road distance is 10 km.
You can take a bus from Wilson - Provigny to Hôtel de Ville via Porte d'Orléans in around 56 min.