Most international flights into Finland arrive at the Helsinki-Vantaa International Airport, which is located about 110 km from Forssa and about 20 minutes from downtown Helsinki.
From the Helsinki-Vantaa International airport there are several bus connections to Forssa central bus station (one way ticket €15 – 17). Taking a bus is by far the easiest way to reach Forssa.
It is possible to arrive by ferry via Stockholm (SWE), Travemünde (GER) or Tallinn (EST) to Helsinki. From the ferry terminal you can take a tram or a bus (€1 – 2) to the Helsinki central bus station and then take a bus to Forssa (possible transportation lines to the central bus station depend on the ferry terminal you arrive at).
If you are planning to stay in Helsinki prior to your arrival in Forssa, you might have to use the public transportation in Helsinki to get around.
When arriving by car, you should take the motorway E 12 from Helsinki and turn onto highway number 2 (on your right) to Forssa from the motorway