How to get from the Helsinki-Vantaa airport into Helsinki city centre quickly and without paying too much for it? Bonus question: how about if the flight arrives in the wee hours (say, at 03:00 am)?
I have a 24 hr layover in Helsinki. I am traveling in a US passport. Can I leave the airport, check into a hotel, and take a bus into the city?
Is it realistic to do a quick visit to Helsinki, if I have 5h waiting time between flights? If so, what kind of transport should I take and what is the landmark mostly worth seeing?