Go through your results for flights to Harstad in Norway with Netflights. Although Norwegian usually has the best prices, it's best to double check what's available for your travel dates.
Flexible on dates? Conducting your search by month allows you to compare prices to Harstad throughout the year. Accommodation prices will also be higher at this time of year.
But if you're struggling to find flights to Harstad that work for you, try looking at other airports in Norway.
For even more options, check what other airports you could fly to Harstad from. You might be able to make a saving by going from a different airport or city.