By plane
Seattle-Tacoma International Airport, IATA: SEA, called "SeaTac" by locals, connects Seattle to all regions of the world, with especially frequent transpacific routes. Competition is fierce and fares are low on service to the San Francisco Bay Area and Southern California.
By ship
Washington State Ferries (http://www.wsdot.wa.gov/f...) connect downtown Seattle to Bainbridge Island, to Bremerton, and to Vashon Island, and connects West Seattle to Vashon Island and to Southworth Kitsap Peninsula. All ferries are for both vehicles and passenger except the ferry between downtown Seattle and Vashon Island.
High Speed Catamaran Passenger ferries (http://www.victoriaclippe...) connect Seattle to Victoria, British Columbia Canada
By car
The major interstates are I-5, running north-south through Seattle to Snohomish County and Pierce County, and I-90, running east from Seattle through Bellevue and Issaquah to Snoqualmie Pass and Kittitas County. The notoriously congested I-405 splits off from I-5 at Tukwila in the south and Lynnwood in the north, serving Bellevue and the other cities of the Eastside. SR-167 is an alternate route from Tacoma to the south county, while SR-18 is a high speed bypass from north of Tacoma to I-90 east of Issaquah.