In October and early November I had two commutes through SEA to ANC.

One week I was bumped off of 6 flights, the next week I was bumped off of 7 flights. Unequivocally I will NEVER commute through SEA again.

There are tons of revenue stand-by's, non-revs, and tons of jumpseaters. Also, Alaska's w/b system ends up with weight restrictions often on that route. Add to that Alaska jumpseaters and NW jumpseaters take priority. AS jumpseaters are obvious; however, because NW is some sort of a code share partner with AS, after you've been bumped all day and waiting around 12 hours, a NW guy can show up 15 minutes prior to departure and get listed ahead of you (and there are a lot of NW guys that commute SEA-ANC).

Furthermore, of the dozen times I've commuted through SEA, I have always, 100% of the time, been on the actual jumpseat. I appreciate the AS guys helping out when they can; however, based on my experience I would strongly recommend avoiding Alaska Airlines and Seattle.