There are several options for transportation to and from SeaTac airport. Choose the one that suites you best!

Shuttle Express is a van service that will bring you to our door and is convenient for the price. They can be contacted on arrival at 206-622-1424. Follow the signs in the airport to shuttles and buses. $16-23 per person/$21-29 for two people depending on where you are dropped off.

If you have a large group arriving together, ask them about group rates. It is a very inexpensive option; the more people you have with you, the cheaper it is per person.
www.shuttleexpress.com

Public Transportation (the bus)
Public transportation is the cheapest route, but a little more inconvenient depending on where you are staying. If you are staying downtown, then you can take the bus directly there. If you are staying in another area of Seattle (Capitol Hill, Ballard, Queen Anne), then you will need to transfer to the appropriate bus line.

The following public transportation services are available to and from Seattle-Tacoma International Airport. Public transit bus routes serve the Airport outside Door 6 by baggage carousel #1, on the Baggage Claim (lower) level. Metro Transit
1-800-542-7876
1-206-BUS-TIME (287-8463, automated schedule info.)
$1.25-$2.00 One Way / Single Fare / 1 or 2 Zone(s)
Sundays and Holidays, All Day Pass - $2.50

The King County Metro website has a great tool called trip planner. Once you insert where you are coming and from and where you want to go, it will let you know the best routes to take with the bus.
http://tripplanner.metrokc.gov/

Metro Route 194 - Daily airport service to and from downtown Seattle and to and from Federal Way. Departure times: every 30 minutes in both directions.
Travel time: 30 minutes.
Metro Route 174 - Daily airport service to and from downtown Seattle and to and from Federal Way. Departure times: every 30 minutes in both directions.
Travel time: 45 minutes.

Taxi cabs and Limousines
Taxi cabs and limousines meet travelers on the third floor of the Parking Garage. To arrange for a taxi or limo, use one of the curbside phones, Information Boards, or visit the Ground Transportation Center, located on the third floor of the Parking Garage.

Cabs (STITA)
Available on the third floor of the Parking Garage. Sedans, station wagons and large vans are available.

Call (206) 246-9999, or use the curbside phones on Baggage Claim Level.

Limousine (STILA)
Stationed at the Airport, picks up passengers on the third floor of the Parking Garage.
To arrange for a limousine, call (206) 431-5904, use curbside phones, or go to the Ground Transportation Booth, on the third floor of the Parking Garage.

Evergreen Towncar Service is a limousine service that should be arranged in advance by calling 1-800-363-6966.

Rental Cars
If you want to have your own transportation to and from the weekends events, here are some rental car companies to choose from. Again, I recommend booking your rental car through www.expedia.com, www.orbitz.com or www.travelocity.com for the most competitive rates.

Nine rental car companies have information counters in the Baggage Claim area, and five have car pick-up and drop-off at the airport on the first floor of the garage across from the Main Terminal. In addition, off-airport rental car companies provide courtesy van service to the airport.

On-site counter and cars
Alamo: (206) 431-7588
1-800-462-5266
www.alamo.com
Avis: 1-800-331-1212
www.avis.com
Budget: 1-800-435-1880
www.budgetrentacar.com
Hertz: 1-800-654-3131
www.hertz.com
National: 1-800-328-4567
www.nationalcar.com

On-site counter, off-site cars
Advantage: 1-800-777-5500
(206) 824-0161
www.arac.com
Dollar: (206) 433-5825
www.dollar.com
Enterprise: (206) 248-9013
www.enterprise.com
Thrifty: (206) 246-7565
www.thrifty.com
Seattle, WA 98122
Reservations:(800) 590-1801