We live in the San Juan Islands and travel to SeaTac. Have used Kenmore as well as the airporter shuttle. It's a 3 hour excursion when you factor connections or land and ferry travel. But we also will fly out of Bellingham often which is a much shorter trip for us. The Bellingham Marina is worth checking out as is Cap Sante Marina in Anacortes. IMO very nice towns with terrific access to all the beautiful islands.