The Arlanda Express is the recommended method of getting from Arlanda International Airport to Stockholm's Central Station.
At the airport: signage within the airport was visible and intuitive. After clearing customs and immigration in Terminal Five, we were able to quickly reach the Arlanda North station and use one of the self-service kiosks to buy a ticket.
Tickets: Adult tickets cost 190SEK, while children 7 and under are free. If you arrive on a weekend or a holiday, Arlanda Express offers the trip for 200SEK for two adults and up to four children.
The trip: As advertised, the trip takes just 20 minutes. The train ride itself was smooth. One note of caution: some seats face backwards and this may cause some discomfort to people prone to motion sickness. Also, if you have motion problems, don't sit next to a window, as you will experience just how quickly the train moves!
Arrival at Stockholm Centralstation: The Arlanda Express arrival location is designed with the traveler in mind. There is no need to navigate escalators or elevators to reach the taxi stands, which is nice. However, it is also connected to the main train station, with convenient connections to the T-bana and key bus routes.
Official Arlanda Express Website