Finncomm Airlines provides the fastest connection from Turku to Kittilä. From Kittilä it is easy to get for example to Levi & Ylläs ski resorts.
Timetables for next winter will be published in fall.
Holidays with accommodation here
Flights between Helsinki and Turku are operated by Finncomm Airlines and marketed by Finnair: http://www.finnair.fi/