If your comming from Spokane, check out Lake roosevelt, I used to deer hunt up on Mt Bisby, over looked lake roosevelt, always tons of birds in there. Also, the pot-holes are legendary, Lake moses ect.... Out far west, the hood canal is great for your designer birds, old-squaw and harlequin, plenty of scoters also. Even farther out west, in Ocean shores, theres an awesome early goose area, look up the Ocean Shores airport, its just a tiny, cesna, one-strip puddle jumper airport but the geese are thick in there for the early season with plenty of camp grounds all around to stay at. Not too many people know about this place or go there. The few times I went, we never saw another party out there. All routes are nicely marked for hunters to go to and from through the airport. The airport is just a shack, some hangers, and a runway. Theres lots of places, but I never found a major flyway or anything, it was either completly bust or a quick limmit, one extreme to another, but many places being close together, if one wasn't producing, we'd go to another really quick.
