With Plane: The Flight to Kiruna Airport and from Kiruna with rental-car or bus.
Kiruna - Lannavaara about one and a half hour drive.
Flights that are trafficing Kiruna Airport are SAS and Norwegian.
With car from south on E10: In Svappavaara turn towards Karesuando on E45 when arrival in Vittangi keep following signs towards Karesuando. After about 45 km you will arrive in Nedre Soppero after the bridge turn right towards Lannavaara 9 km.
With car from north, Finland or Norway on E8: In Karresuvanto (in Finland) turn towards Gällivare E45 over the bridge. After about 65 km on E45 you will arrive in Nedre Soppero turn left towards Lannavaara 9 km.