Flight Stockholm Arlanda Airport departs from Stockholm Stockholm Arlanda Airport at 13:50 and arrives at Reykjavik Keflavík International Airport at 15:10.
The flighttime is about 3h 20m. The distance travelled ("as the bird flies"): 4530 Km. So the average speed is roughly 1359 Km.
There is an 2 hour time difference between Stockholm and Reykjavik