From the Airport you can reach the city center with the local trains I and P. The journey time between the airport and the city centre (Central Railway Station) is approximately half an hour. A regional ticket costs 5 euros and can be purchased from Helsinki Region Transport (HSL) ticket machines and onboard trains from a ticket sales carriage.
Bus 615 (“Lentoasema-Rautatientori”) is operated by Helsinki Region Transport (HSL). A regional ticket costs 5 euros and can be purchased from Helsinki Region Transport (HSL) ticket machines or from the driver. At night you can also take the 415N night bus.
More information and timetables of all public transport to and from the airport at HSL, Helsinki Region Transport website! More information on eg. buying your tickets and location of the bus stops at Finavia website!
The Finnair City Bus operates between the airport and city centre (Elielinaukio) every 20 minutes and takes around 30 minutes. A single ticket costs 6.20 euros when purchased online in advance or 6.30 euros from the driver.
You can also travel conveniently between the airport and the city centre by taxi, which will cost around 35-40 euros. The taxi stands are located in front of both of the terminals at Helsinki-Vantaa airport. The journey time is around 30 minutes.