If you do not live in Finland we recommend you to take the plane from your next large airport to Helsinki.
From Helsinki Airport you can take a train to Tampere. You will have to change the train once or twice (depending on the train you will take).
Duration: about 2 hours
Costs: 10-20€ (approximately, one direction)
The trains are leaving at least once an hour.
You can check the schedule and buy a ticket here: https://www.vr.fi/cs/vr/en/frontpage Please check the schedule when booking the flight, in order to make sure that you don’t miss the last train. *Ryanair offers flights from Bremen and Budapest directly to Tampere.