Planes
Seattle-Tacoma International Airport provides commercial flights to all destinations. From link light rail line 1 you’ll want the SeaTac/Airport station
Kenmore Air provides scheduled seaplane flights from South Lake Union to regional destinations including Victoria, BC and the San Juan Islands. They also provide local sight-seeing tours
Boats
The Victoria Clipper provides scheduled service from Pier 69 to Victoria, BC. They also provide local whale-watching tours
Trains
Amtrak provides frequent routes to Portland, OR, daily routes to Vancouver, BC, and scheduled service to Chicago, Los Angeles, and the rest of the national network. From bus route 7 you’ll want the stop at S Jackson St & 5th Ave S. From light rail line 1 you’ll want the International District/Chinatown station
Buses
Greyhound provides daily routes to Portland, OR, Vancouver, BC and Port Angeles, WA and connections to the national network. From light rail line 1 you’ll want the Stadium station