Flybussarna is a dedicated airport bus service which can be caught from terminal no. 5; a bus departs from every 10-15 minutes for the city and takes upto 45 minutes to reach the city terminal in Norrmalm district.
This service continues from 5 am morning till 1 am night daily. One may get its ticket little cheaper by booking online.
Ticket can be purchased by card on the bus but can also be bought from the branches of 7-Eleven and Pressbyrån inside the airport.
119 SEK One Way 215 SEK Return (open ticket)
Website: <a href="http://www.flygbussarna.se/en" target="_blank">Flybussarna</a>