Tampere is the closest airport and a car ride from there with some of the Finns should be easily arranged.
Helsinki is also possible airport, but car rides may be more difficult. It all depends on how many drivers are coming from Helsinki. Gwurzel and his wife took a train from Helsinki to Tampere last year (about 2 hours ride).
I believe Snefens (and Teufel?), from Denmark, are also planning on coming next spring
