The average bus between Guyancourt and Cergy takes 1h 38m and the fastest bus takes 1h 18m. There is a bus service every few hours from Guyancourt to Cergy. 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 Cergy. The earliest departure is at 12:54 AM at night, and the last departure from Guyancourt is at 8:36 PM which arrives into Cergy at 9:58 PM. All services require a transfer at Saint-Quentin - Gare Routière des Prés and take an average of 1h 38m. The schedules shown below are for the next available departures.

1h 39m • 1 change

1h 37m • 1 change

1h 39m • 1 change

1h 44m • 1 change

5h 55m • 1 change

1h 26m • 1 change

1h 29m • 1 change

1h 29m • 1 change

1h 18m • 1 change

1h 24m • 1 change

1h 29m • 1 change

1h 36m • 1 change
Want to know about travelling from Guyancourt to Cergy? 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 Cergy. However, there are services departing from Guyancourt station and arriving at Cergy station via Gare de Cergy Préfecture - Quai O. The journey, including transfers, takes approximately 1h 38m.
Guyancourt to Cergy bus services, operated by Saint-Quentin-en-Yvelines, depart from Saint-Quentin - Gare routière Paul Delouvrier station.
Guyancourt to Cergy bus services, operated by Saint-Quentin-en-Yvelines, arrive at Gare de Cergy Préfecture - Quai O station.
The distance between Guyancourt and Cergy is 29.3 km. The road distance is 51 km.
Lignes Île-de-France Ouest operates a bus from Saint-Quentin - Gare routière Paul Delouvrier to Gare de Cergy Préfecture - Quai O hourly. Tickets cost €2–3 and the journey takes 1h 8m.