Kelowna is a beautiful city. The first time I went was for a little touring show, I think arranged by Orser. Maybe Husky Skate the Nation? It was a short flight from Seattle.
For people who want to do both, if there are affordable flights from Victoria to Kelowna, a stop in Victoria on the way might be a better trip than spending more time in Seattle: you can see a lot more in Victoria in a short amount of time, and the Clipper leaves from downtown Seattle and arrives close to the downtown center of Victoria. The Clipper also has packages with hotels in Victoria, although prices should be check against other sites and the hotels themselves.