What is the best way to get to the airport?

I'm traveling this summer and I have to Airport (including Seattle-Tacoma Airport). Would not it be better to take a taxi or rental car (my knowledge of the car hire is limited by the way).

If you're somewhere in the Seattle-Tacoma There are several options at the airport. Sound Transit and King County Metro operates two bus routes that are suitable. Shuttle Express is reasonably priced service that picks you up at home or hotel and drop you off at the airport. http://www.soundtransit.org http://transit.metrokc.gov http://www.shuttleexpress.com

Seatac Limo