Arlanda Express, Stockholm
Arlanda is the biggest airport in Sweden and you can go almost anywhere in the world from here. To get from Arlanda to Stockholm City, you can go by the new high-speed-train (120 Skr, 20 min) or by bus (60Skr, 50 min)
SL - Subway and buses. Cheap, pretty reliable and the only way to avoid the terrible traffic jams.
The best and fastest way to get to Stockholm City. It takes 20 minutes to get to Stockholm City. For timetable and price wisit the website (In english).