I'm probably one of the few on here who has actually flown into Lappeenranta, near the Finnish border with Russia (even looked at renting a PA28 from the local aero club for a jolly but that's another matter). A few years ago it was on the Golden Air network in Finland, with about 6 SF340s to Helsinki a day, then they gave it up and there was nothing for a while.
Fly Lappeenranta (a sort of local Chamber of Commerce-type initiative) started up and chartered an SF340 themselves for just 4 a day, but don't seem to have had much success, probably because they don't have the interline arrangements with Finnair that Golden Air had. So they are downsizing again, to a Jetstream.
Typical loads a few years ago on the Saabs were about a dozen passengers, in fact never more, and I guess have gone down since, which would fit the Jetstream nicely. Hope the crews manage to enjoy Lappeenranta hotac - have to say it's no Las Vegas !