For the moment it looks like a strong blossoming synergy is going on between North West KLM Royal Dutch Airlines, Continental Airlines, Delta Air Lines, Alaska Airlines, Horizon Air and Hawaiian Airlines
The latest news involving this particular group of airlines was released today:
Simultaneously, Northwest announced that its 755 airport self-service check-in kiosks, located at 188 airports, are also able to provide customers with boarding passes on itineraries involving both Northwest and the six partner airlines.
Since NorthWest and Continental already do codeshare with Alaska/Horizon, I think is just a matter of time before Delta will join this very lucrative structure. As a direct result of this, yes Seattle could become over night a very large market for Delta without the necessity of building up a new hub at SeaTac airport.
It's very true that NW
flies Amsterdam out of SEA
but not every one gets a convenient connection flight out of Schiphol. There are a bunch of exclusive destinations served either by AMS
or GDG. On top of that an option to choose between airlines and destinations will always be enticing and engaging for travelers looking for new experiences.
I don't see any reasons why Air Canada would be willing to serve Paris from Vancouver. They seem to stick to their old pattern of feeding Toronto and Montreal with passengers originating in Vancouver.
Direct non-stop Vancouver to Paris by Air France? Slim chances. Not enough SkyTeam (or partners) feeding-structure in place at Vancouver International. Besides Air France already had a bad experience flying to Vancouver few years back. KLM and Martinair are both serving Vancouver in the summer time