Vantaa Airport is about 15kms from Helsinki city centre. Taxis cost about euro 25-30 though there are shared taxis which can be cheaper. Finnair runs a coach service to most of the large hotels for 5 euro but the cheapest way is public transport bus (no 615) which costs less than 5 euro per person.
To book the shared taxi you can contact phone 0600 555 555 to make a booking for a taxi minivan for up to 4 people.
All domestic and international flights land Helsinki-Vantaa International Airport which is situated 15 kilometres to the north of the city of Helsinki.
The international and domestic terminals are separate but connected by a walkway.
The cheapest way to travel from the city to the airport or vice versa is to use public bus number 615. It takes around 40 minutes and costs 3,40 €.
The second cheapest alternative is to use Finnair's own bus which will stop in major hotel and costs 5,20 €. I use Finnair's bus almost always when I have to go to the airport.
Taxis to the city centre will cost 25 € and up. There are also shared airport taxis (minivan) which will cost less (18 €).
Here are the alternatives to get from/to HKI's airport.
1. The cheapest way is to go by public buss. Buss number 615 leaves right outside the terminal on a regular basis (check ytv.fi for the timetable). Takes your approx. 40 min. to get to HKI's city centre (railwaystation). Costs: 3.40Euro.
2. Finnair city buss: Leave almost from the same point as the public buss. Pro: It only makes one stop before arriving at the city. Costs: 4.90 Euro.
3. Yello line taxi: Group taxi. Pros: the bring you right in front of where you want to be. One-two persons far is 20Euros. You have to wait a few moments before they leave and you might have to share the taxi buss with some other passengers. And if you are very unlucky, you are the last one they will drop off :) Location: When you get into the arrivals hall (after "customs") go straight to the right.
4: Regular taxi. Most expensive though fastest. Location, right outside of the arrivals hall.
You can have 2 buses from the airport to downtown: we took the Finnair one, which is more expensive but it was leaving few minutes before the other one.
Superfunny driver, a little bit "acid" inside :-)))
Chek the webpage and you can have all the details you may need.
Helsinki's airport is one of the nicest airports I know... and surveys have underlined my opinion quite a few times in the last years.
There are some good shops (make sure to get some bear or reindeer salami before going home, what a souvenir!), everything is close to another and people are really friendly. The only problem is that there are only two small non smoking areas in the whole place and the air in there is incredibly terrible!
As the airport is not in Helsinki but in Vantaa it's quite far away from Helsinki city centre. A taxi will cost you around € 30 but there's a Finnair Shuttle Bus which costs only 4,90 and it'll take you only 25 minutes to get to to Helsinki main station with it.
The Helsinki airport is located in Vantaa, quite close to the city centre.
If you are taking a domestic flight you are using Terminal 1 and international flights leaves from Terminal 2. Terminal 2 is actually also called terminal 3 and 4 depending on which check in area you enter. But don't worry about going to the wrong place, the airport isn't that big so you will not need many minutes walk to get to the right place.