Each Wednesday, between 11:00am-1:00pm PST, Alaska Airlines holds a “Fast-Dash Sale”. During this Alaska Airlines flash sale you can get some great deals on flights; if they happen to have a route you are interested in.
For example, today’s flash sale has the following deals:
SEA-FAT – $54
SEA-SMF – $54
BOI-SJC – $54
SJC-LIH – $153
It seems that they usually have at least one flight on sale out of Seattle.
Typically the Alaska Airlines flash sale is announced through their Twitter account or by going directly through this link to their sale site.