Access the Washington State Ferry schedules and rates at http://www.wsdot.wa.gov/ferries/schedules/current/index.cfm

From I-5 take the West Seattle Bridge Exit (#163).  Cross the West Seattle Bridge and follow signs to the Vashon Ferry.  The street will become Fauntleroy Avenue, which takes you directly to the ferry dock.  It is past Lincoln Park on the right-hand side.  If there is a line for the ferry pull behind the other cars at the end of the line - do not cut in line! See ¹ & ² below.

From the Kitsap Penninsula - Southworth Ferry

On Highway 16, take the Sedgewick Road Exit and follow to the Southworth Ferry Dock. See ¹ & ² below.

From Tacoma - Pt. Defiance Ferry

From I-5 take the Highway 16 Exit West (south of Tacoma Dome and north of Tacoma Mall.)  Get off Highway at 6th Avenue Exit.  Take a left at the light onto 6th Avenue.  Take the next right at the light onto Pearl Street.  Follow Pearl Street to the ferry dock (about 3 miles.)  Purchase a round trip ticket at the toll booth.  When you dock on Vashon Island, turn left onto Vashon Island Highway.  Follow about 5 miles to a flashing red light.  Turn right at this light onto S.W. Burton Drive. See ² below.

¹ Purchase a roundtrip ticket to Vashon Island at the toll booth.  When you dock at Vashon Island, you will exit the ferry and be on the Vashon Island Highway.  Follow this road for about 9 miles.  Along the way you will pass through 4 flashing red lights.  At the 4th flashing red light, turn left onto S.W. Burton Drive.