Through October 26, Alaska is offering a $50 discount code for new Mileage Plan members that are residents of California. The discount code is good for a minimum of a $100 fare departing California, for travel between September 5 and November 10, 2012, and isn’t transferable.
For what it’s worth, Alaska has some great fares from Oakland to Hawaii this fall, starting at just $168 one-way. Knocking an extra $50 off sure wouldn’t hurt!
(Tip of the hat to Gary)