Flight Helsinki Vantaa Airport departs from Helsinki Helsinki Vantaa Airport at 16:05 and arrives at Reykjavik Keflavík International Airport at 16:55.
The flighttime is about 3h 50m. The distance travelled ("as the bird flies"): 5304 Km. So the average speed is roughly 1384 Km.
There is an 3 hour time difference between Helsinki and Reykjavik