Seattle has more money so it has more art. They are far down on the great art chain of being. But they have their own art fair child of the Allen family.
Seattle galleries, some Portland ones, and a few national/international galleries present. It is privatey curated by the individual for-profit galleries, unlike a nonprofit group show.
Portland galleries Atler, PDX Contemporary, Russo-Lee are there. Portland artist Sharita Towne has an offsite event. Forest For the Trees has a residency in Seattle so they are hosting an after party. Converge 45 is hosting an event. That and more is at https://seattleartfair.com/2023-around-town/.
Many of our Portland projects offer free passes on request. If you want to experience a commercial art fair, this is probably the closest. It's about a quarter mile walk from Amtrak.
The Seattle Art Fair https://seattleartfair.com at Lumen Field Event Center, 800 Occidental Ave S, Seattle Thurs 6PM-9, Fri/Sat 11AM-7, Sun 11-6 $65 to Free