There is a last-minute special on Continental Airlines between Anchorage and Seattle. The cost is $253 a.i. (all-in, including taxes and fees). Travel outbound (in either direction) on Sat., Apr. 19. Return on Mon. or Tue., Apr. 21 or Apr. 22. This is a great deal! 

When you go to Seattle, you'd be smart to get a copy of the Seattle TourSaver. It's the 2-for-1 book with all the cool stuff in Seattle: tours, activities, admissions, etc.