The average bus between Terminal 1 and Montrouge takes 2h and the fastest bus takes 1h 32m. The bus runs at least 2 times per hour from Terminal 1 to Montrouge. 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 30 minutes between Terminal 1 and Montrouge. The earliest departure is at 6:10 AM in the morning, and the last departure from Terminal 1 is at 10:35 PM which arrives into Montrouge at 12:20 AM. All services require a transfer, and take on average 2h. The schedules shown below are for the next available departures.

2h 1m • 1 change

1h 52m • 1 change

2h 3m • 1 change

2h 1m • 1 change
Want to know about travelling from Terminal 1 to Montrouge? 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 Terminal 1 to Montrouge. However, there are services departing from Terminal 1 station and arriving at Montrouge station via Porte de la Chapelle. The journey, including transfers, takes approximately 2h.
Terminal 1 to Montrouge bus services, operated by Express Roissy, depart from CDG T1 - RoissyBus station.
Terminal 1 to Montrouge bus services, operated by Express Roissy, arrive at Porte d'Orléans station.
The distance between Terminal 1 and Montrouge is 27.5 km. The road distance is 37 km.
You can take a bus from CDG T1 - RoissyBus to Porte d'Orléans via Porte de la Chapelle in around 1h 56m.