Very good place to start finding information about travelling to Vaasa is the tourism portal.
Vaasa Airport (VAA) is located 6 km south of the venue. Everyday you will have several flights from Helsinki and Stockholm. Other option for travellers coming to Vaasa is Helsinki-Vantaa (410 km) international airport.
Please contact Jussi Luopajärvi before 8.6.2015 if you need transportation services.
One option to travel from Helsinki airport to Vaasa is by train. Train station is around 5 kilometers from the track. See http://www.vr.fi/eng/ for more information.When buying a train ticket, check if change of the train is needed (normally at Tampere and/or Seinäjoki).