The average bus between Helsinki and Sastamala takes 4h 42m and the fastest bus takes 3h 35m. The bus service runs several times per day from Helsinki to Sastamala. 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 4 hours between Helsinki and Sastamala. The earliest departure is at 12:50 AM at night, and the last departure from Helsinki is at 11:20 PM which arrives into Sastamala at 7:35 AM. All services require a transfer, and take on average 4h 42m. The schedules shown below are for the next available departures.

3h 35m • 1 change

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Arrives next day

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4h 30m • 1 change

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9h 40m • 1 change

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Want to know about travelling from Helsinki to Sastamala? 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 Helsinki to Sastamala. However, there are services departing from Helsinki station and arriving at Sastamala station via 2. The journey, including transfers, takes approximately 4h 42m.
Helsinki to Sastamala bus services, operated by OnniBus, depart from 29 station.
Helsinki to Sastamala bus services, operated by OnniBus, arrive at Vammala linja-autoasema station.
The distance between Helsinki and Sastamala is 171.2 km. The road distance is 232 km.
You can take a bus from 29 to Vammala linja-autoasema via Tampereen Linja-autoasema in around 3h 56m.