Originally Posted by
AC*SE
YVR is another option. A380 in the summer, arrive around 7pm well outside prime hours for Canadian immigration and customs. Excellent airport hotel (Fairmont YVR).
Flights to PDX operate on small aircraft with US preclearance.
I've flown PDX to YVR on the Horizon dba Alaska Dash 8, it was enormous fun especially the aborted takeoff, I would thoroughly recommend the YVR connection. Immigration into Canada and into the US will both take place in Vancouver. Just allow enough time for this - or a couple of days and do it properly, Vancouver is a wonderful city.
If paying your own way to Portland, Alaska flights offer Avios but no tier points, this applies also when booked on an AA code