Finnair made this announcement on the first flight to SEA on June 1:
Our inaugural flight to Seattle/Tacoma (SEA) was celebrated with a ribbon-cutting departure ceremony at Helsinki Airport (HEL).
With this new direct flight, we are excited to be able to offer excellent transfer connections to the West Coast and Canada through our partner Alaska Airlines.
Finnair arrives in SEA (below).
Meanwhile SEA celebrate the first departure to HEL.
Finnair aircraft photo gallery: