Travelling from Helsinki to Lapland
Route planner and additional information: http://www.journey.fi/en/
OnlyInLapland.com: Lapland - The North of Finland: http://www.onlyinlapland.com/
Group tours from Helsinki to Lapland
Kontiki: http://www.kontikifinland.com/holidays
By airplane
Finnair flies from Helsinki to Enontekiö, Ivalo, Kemi, Kittilä, Kuusamo, Oulu and Rovaniemi. Finnair is Santa's official airline. See http://www.finnair.com. There are daily connections year round from Helsinki to Lapland. Flight times from Helsinki to destinations in Lapland:
Ivalo (near Hotel & Igloo Village Kakslauttanen) 1 h 35 min
Kemi/Tornio 1 h 10 min
Kittilä 1 h 45 min
Rovaniemi 1 h 20 min
Check also possible quick getaways!
Norwegian (low cost airline) flies from Helsinki to Rovaniemi, Ivalo and Kittilä (cheap flights): http://www.norwegian.com
SAS (former Blue1) flies from Helsinki to Kittilä and Kuusamo: http://www.flysas.com/en/fi/
Search flight connections and timetables in Finland and to/from Finland: http://www.finavia.fi/en/helsinki-airport/timetable-search/
By bus
Eskelisen Lapin Linjat (routes Helsinki-Rovaniemi-Nordkapp and Helsinki-Rovaniemi-Tromsa): http://www.eskelisen.fi/en/index.php
Matkahuolto: http://www.matkahuolto.com/en/
By train
Train connections Helsinki - Kolari (995 kilometers, about 13 hours) and Helsinki- Rovaniemi (900 kilometers, about 9-10 hours, night trains are slower) several times a day. All night trains have sleeper cabins with beds. On the way from Helsinki to Lapland you will see beautiful Finnish landscape. Trains are the cheapest way to travel to Lapland. It is also possible to take your car with you to and from Lapland on the so called "car train". For more details and timetables https://www.vr.fi/cs/vr/en/connections_in_lapland and https://www.vr.fi/cs/vr/en/frontpage . You can also buy tickets online.