There are regular bus conncetins between the Oulu city center and the airport. The buses 8, 9 and 56 drive through Teknologiakyla and Heikinharju. Timetables are available on the website of Oulu Public Transport Authority (Oulun joukkoliikenne).
Check here when the next bus will depart from the airport.
Taxis are on call at the taxi stand in front of the airport during the scheduled arrival times. If you wish to confirm a ride or you have special requests, you can book a taxi before arriving at the airport. Below is a list of local taxi companies
Taxis for disabled:
Car Rentals are located incheck-in area.