One of the smallest airports I ever flew to or from - I guess it has 2 gates, not sure even about that. However, very comfortable.
Security was a breeze, considering the size of the airport. However, don't forget to put all the liquid toiletries out in a separate bag - they are very strict about it.
Plenty of comfortable seating in the waiting area. You can get food and drink at a tiny cafe and then observe the fields and the trees until your plane will arrive.
Note that the airport is located over a good distance from the downtown of Kuopio, so you need to allow for about 30 minutes drive over mostly empty roads (not sure if they ever get traffic there). The taxi ride to/from downtown will cost you about 40 euro. read more