Finland is available from Tromsø by bus.
From June to September there is one daily bus at 07.30 (7.30am) from Tromsø to Finland. The main destinations are Kilpisjärvi (approx. 3.5 hours), Rovaniemi (approx. 10 hours) and Oulu (approx. 14 hours).
At other times of the year, no bus service is available via Kilpisjärvi. An alternative is travelling by bus to Narvik and train to Haparanda, then by bus to Rovaniemi, Kemi and Oulu.
There is one daily bus departure year-round from Karasjok in Finnmark County to Rovaniemi (Finland). Unfortunately there is no direct bus connection from Tromsø to Karasjok (approx. 8 hours). It is possible to travel from Tromsø to Karasjok via Alta, by staying overnight in Alta.