Daily flights between Helsinki and Ivalo operated by Finnair and Norwegian. The transfer of groups of 1-4 persons from the airport to Nellim takes about 50 minutes and costs 85 euros (one way). We can arrange on request transport services between the airport and Nellim. In our Ready made activity-packages airport transfers are included. 
From Rovaniemi there is a bus or train connection with the terminal in Ivalo, from there you can take a taxi to get to Nellim, because there is no public transportations to Nellim. You can check buss schedule from http://www.matkahuolto.fi/en/ and trains from http://www.vr.fi/en/index.html.
The first snow normally falls around the middle of October and from mid-November the snow cover is thick enough to allow for winter activities. As for the Lake Inari, it is usually from December that the ice is thick enough to allow for winter activities on the ice. However, given that weather conditions vary from year to year, it is advisable to check by visiting the Weather Services site such as http://www.foreca.fi , http://www.yr.no/ or http://en.ilmatieteenlaitos.fi/
A set of winter equipment is available including: 
Overall, boots, wool socks, gloves, a balaclava and a hat. You must bring thermal underwear, a fleece jacket or wool sweater, also lighter clothing (the temperatures are not always that cold) and winter socks (e.g. wool mix socks). On cold weather clothing, it is recommended to avoid cotton as material. Please see the video : Thank’s for Kathy Farrell, this video is really helpfull!
Nellim is small village between two wilderness regions. Village is located on the shore of the huge Lake Inari that is known to be the third biggest lake in Finland. Village of Nellim is called as a village of three cultures, because it’s population is formed by Skolt Sami, Inari Sami and finnish people. In the village there is no markets, gasoline stations or other public services. Mainly closest everything is in Ivalo, 42km away from Nellim. When you plan your trip to Nellim, we hope you remember this fact. In Nellim you only have endless forests and beautiful nature, the true wilderness around you. If you want to know more about the village of Nellim, check out the website of this modest northern village http://nelliminkyla.fi/