Hotels near Washington State Convention & Trade Center are always on sale with CheapOair! Situated at 800 Convention Pl, Seattle Washington State Convention & Trade Center is one of the popular convention centers of the city. Opened in June 18, 1988, this convention center is spread across 71,000 square feet that provides the room necessary to service to groups that had become too large to utilize the original convention center. It is also good for the economy as it has brought nearly four billion dollars to the state’s economy through taxes paid by the out-of-state visitors. Find great deals on cheap hotels near Washington State Convention & Trade Center, and count on CheapOair for all of your travel booking needs!