Sad to hear this as Finland needs more low cost routes, not less. Strange as well, since Ryanair seem to be booming just up the road at Tampere.
I visit friends in Finland back in Summer 2009 and found this the more convenient option even though I was travelling to the Helsinki Metro Area. Timings and price couldn't be beat by Easyjet for the dates I wanted to travel. And altough it looks far on the map between the two cities, and theirs and air service between the two airports, it's not actually that long.
There's a good motorway connection and if I remember right, we done the trip in less than 2 hours. Nothing compared to some of the distances you have to travel for decent air connections in the North West of Ireland!