Oulu is served by Oulu Airport, the second largest airport in Finland by passenger volume. It is located in the neighbouring municipality of Oulunsalo, 15 kilometers (9 mi) from the city centre.
The Port of Oulu is one of the busiest harbors on the Bithynian Bay. It includes four separate harbor areas: Vihreäsaari oil and bulk docks, Nuottasaari docks, Oritkari docks, and the Toppila docks.
The shortest travel time from Oulu railway station to Helsinki Central railway station is 5 h 44 mins, operated by VR. Other destinations include, for instance, Kolari, Rovaniemi, Seinäjoki and Tampere.
The most important road in Oulu is highway 4 (E8/E75) that runs from Helsinki to Utsjoki via Lahti, Jyväskylä, Oulu, Kemi and Rovaniemi. Other highways running to and from Oulu are highway 20 to Kuusamo and highway 22 to Kajaani.
Oulu Airport is the busiest in the country after Helsinki, and the Helsinki-Oulu sector is the country's most popular domestic flight with frequent services (almost 20 flights per day each way) on Finnair, Blue1 and Norwegian. A fully flexible return economy ticket might cost more than €200 but a non-changeable one-way ticket can go as low as €20 or a return ticket for less than €50 when bought months in advance. Norwegian is often cheapest, but airlines compete on price for this route so be sure to check others. There are also some services to Riga, Rovaniemi, Tampere, Turku and Kemi.
The terminal has recently been expanded and now has jet bridges to get you in the planes without having to walk in the freezing cold tarmac. The airport has an automatic map dispenser that provides free maps, but sometimes it doesn't work.
Bus 19 (~€5) connects the airport to the city center in 30 minutes. Buses operate quite frequently from 06:25 to about 21:00 on weekdays. After 21:00 buses operate infrequently to 01:30. A taxi will cost you around €30 for the same distance
