Sandnessjøen Airport at Stokka is south of Sandnessjøen on Alsta and serves this part of the Helgeland coast. It is useful for the town, nearby coastal landscapes and onward journeys to islands reached by boat.
An airport transfer service and rental cars are available. Check the transfer timetable and arrange the onward journey to your accommodation or ferry port. The islands have separate sailing schedules, so plan those connections explicitly rather than assuming they follow flight arrivals.