It looks like Trampled By Turtles are a possibility with no Seattle date. trampledbyturtles.com/shows/. They're not your typical Sasquatch fare but they have played Coachella in the past and this tour they're doing a lot more typical indie venues like the 9:30 Club.
This isn't super sexy but it's something. The Wooden Sky is skipping Seattle in April. Also going for them: they're Canadian and the Windish Agency does their booking; and Windish typically sends a bunch of their artists to Sasquatch. Tour listings and free track at ifidontcomehome.com/.