Vancouver YVR is still your best bet for low priced flights to Europe this summer where departures to cities like Paris are priced hundreds of dollars lower than other west coast airports in June.
American Airlines offers codeshare tickets using Alaska Airlines and British Airways from Vancouver YVR – CDG Paris, France.
Vancouver to Paris round trip flying British Airways June 18-25, 2015.
$915.51 CAD ($728.21 USD) ticketed on American Airlines as codeshare flights.
Flight distance is 10,083 miles, disregarding 500-mile minimums for three segments.
July departures are about $100 more on the low fare dates available for July flights on Star Alliance carriers including Air Canada and United.
Vancouver to Paris round trip flying Air Canada/United and Air France/Delta departing in July and August are available for around $800.
Vancouver to Paris round trip flying Air France/Delta August 2-13, 2015.
$978.91 CAD ($778.65 USD) ticketed on Delta Airlines.
A short train ride from Seattle to Vancouver or a separately purchased ticket or frequent flyer award to Vancouver YVR puts sub-$800 USD airfare in reach to Paris for departures from June to August compared to Seattle airfare, which is over $1,400 USD every departure date in July.