SAS + Widerøe
SAS fly directly from Oslo Gardemoen (OSL) to Harstad/Narvik Evenes (EVE) six days a week. You can also chose to transfer at a smaller airport through Widerøe and fly to Stokmarknes (SKN), Andenes (ANX) or airports furter south such as Svolvær (SVJ). Via the Star Allience both SAS and Widerøe offer flights from all over the world.See ticketprices and flighttimes at www.sas.no or www.widerøe.no
The low fare company Norwegian fly directly from Oslo Gardemoen (OSL) to Harstad/Narvik Evenes (EVE). In the summer they also fly directly from Oslo Gardemoen (OSL) to Andenes (ANX). Norwegian flies from major cities all over Europe. See ticketprices and flight times at www.norwegian.no.
Competition is fierce, so check the airline websites for cheap tickets. Seasonal discounts (summer, winter, etc. ) are often available. The earlier you book, the greater the chance of finding a low-cost fare.
From outside of Norway
If you are travelling to Northern Norway from outside of Norway you will almost always have to fly via Oslo. There are over 250 flights a week from Oslo to Northern Norway, and around 100 international airports have direct flights to Oslo, which should make for a quick and seamless transfer at Oslo Gardemoen.
Which airport in Oslo?
Please note that there are several airports in the Oslo area. Almost all flights to Northern Norway depart from Oslo Airport Gardermoen (OSL) . Several low-cost airlines operate out of Sandefjord Lufthavn Torp (TRF) . This airport is quite a long way from Oslo Airport Gardermoen. Make sure you check which airport you are flying into before you book any cheap tickets!