The average bus between Guyancourt and Issou takes 3h 16m and the fastest bus takes 1h 59m. There is a bus service every few hours from Guyancourt to Issou. 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 Guyancourt and Issou. The earliest departure is at 12:44 AM at night, and the last departure from Guyancourt is at 9:05 PM which arrives into Issou at 5:17 AM. All services require a transfer at Saint-Quentin - Gare Routière des Prés and take an average of 3h 16m. The schedules shown below are for the next available departures.


2h 46m • 2 changes

2h 48m • 2 changes

3h 5m • 2 changes

3h 6m • 2 changes

6h 31m • 2 changes

2h 57m • 2 changes

2h 28m • 2 changes

2h 11m • 2 changes

6h 21m • 2 changes

2h 57m • 2 changes

2h 28m • 2 changes

2h 11m • 2 changes

6h 21m • 2 changes

2h 57m • 2 changes

2h 28m • 2 changes

2h 11m • 2 changes

6h 21m • 2 changes

2h 57m • 2 changes

2h 28m • 2 changes

2h 11m • 2 changes

6h 21m • 2 changes

2h 57m • 2 changes

2h 28m • 2 changes

2h 11m • 2 changesWant to know about travelling from Guyancourt to Issou? 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 Guyancourt to Issou. However, there are services departing from Saint-Quentin - Gare routière Paul Delouvrier station and arriving at Lavoir / Issou - Porcheville station via Gare Routière de Mantes-la-Ville - Quai 26 station. The journey, including transfers, takes approximately 3h 16m.
Guyancourt to Issou bus services, operated by Lignes Île-de-France Ouest, depart from Saint-Quentin - Gare routière Paul Delouvrier station.
Guyancourt to Issou bus services, operated by Réseau de bus du Mantois, arrive at Lavoir / Issou - Porcheville station.
The distance between Guyancourt and Issou is 31.5 km. The road distance is 43 km.
You can take a bus from Le Château to Lavoir / Issou - Porcheville via Saint-Quentin - Gare Routière des Prés, Saint-Quentin - Gare routière Paul Delouvrier, Gare Routière de Mantes-la-Ville - Quai 26, and Gare de Mantes-la-Jolie - Quai 11 in around 3h 6m.