The easiest way to get to Hostel Tikka is to use the local bus.
Bus Number 8 drives frequently just in front of the hostel route center-arctic circle-center. On weekdays there is also busline 10 which bus stops are nearby.
More information to the bus routes and timetables you can find from the website www.linkkari.fi/In-English
There is no bus connection to the airport.
There are many taxiservices in Rovaniemi. Here you can find links to their web pages