If you have your accommodation in Stockholm arranged by Nordita, you can also check the following directions between the airports, the hotels and Nordita:
Nordita is in the campus of AlbaNova University Center, within walking distance from the main campus areas of the three universities in northern Stockholm: Stockholm University, KTH-Royal Institute of Technology and Karolinska Institutet.
Going by bus to Stockholm takes about one hour. Tickets for the Airport Coaches (Flygbussarna) can be bought on their website: www.flygbussarna.se or on board with any major credit card. Note that cash is not accepted!
By Arlanda Express train (see www.arlandaexpress.com) it takes only 20 minutes but costs twice as much as the bus fare.
To Nordita it is now a 10-15 min walk (see the directions on the map). When you come up to the street level from the subway, you will have the main street Valhallavägen on your left hand side, making an S-bend towards the left, around a small park. You should follow that street and continue slightly downhill until you reach a hot-dog stand Tullfritt, at the bottom of a steep street Roslagstullsbacken. Nordita is at the top of that street, across the roundabout.
Instead of walking, you can take the bus no. 61 from just outside the subway exit (50 m ahead, along the sidewalk) to the last station Ruddammen.
Going in the other direction, from Nordita to the Central Station, you should take a red line subway in the direction T-Centralen or Fruängen to central station.
Taking a taxi from Arlanda to anywhere in central Stockholm will cost approximately 450-500 SEK. Make sure to ask for the fixed Arlanda-Stockholm price! Taking a taxi anywhere within central Stockholm will cost approximately 150 SEK. Taxis accept all major credit cards.
Some taxi companies are:
Some airlines fly to Skavsta airport in Nyköping, southwest of Stockholm. Take the Airport Coaches (Flygbussarna) at the airport to the City Terminalen, and follow instructions above as for travel from Arlanda airport (Note that Skavsta airport buses do not pass S:t Eriksplan).
Nordita is situated in three buildings on the AlbaNova campus. The Nordita East building, Roslagstullsbacken 23, is a small yellow building, just to the right of the entrance to the white main building of AlbaNova, and the Nordita West building, Roslagstullsbacken 17, and Nordita South building, Roslagstullsbacken 11, are to the left. If you have received no further instructions you should go to the Nordita East building, press the door bell and ask for Anastasios Mentesidis or Elizabeth Yang.
Here you can read more about traveling in Stockholm: