Five major cruise lines currently operate weekly service out of Seattle on nine premier vessels. Norwegian Cruise Line and Celebrity

• Celebrity Cruises
  Celebrity offers 3 and 4 day Pacific Northwest itineraries. For sales information please contact your local travel agent or call (800) 722-5941.
• Holland America Line (HAL)
  Holland America Line offers seven-day cruises from Seattle to Alaska on the ms Amsterdam, ms Oosterdam and the ms Noordam. Holland America passengers depart from the Terminal 30 Cruise Terminal located at the south end of Seattle's downtown waterfront. For sales information please contact your local travel agent or call (877) 932-4259.
• Norwegian Cruise Line (NCL)
  Norwegian Cruise Line has made Seattle its homeport for seven-day summer cruises to Alaska on board the Norwegian Star and Norwegian Pearl. Passengers depart from the Bell Street Pier Cruise Terminal at Pier 66 on Saturdays and Sundays. For sales information please contact your local travel agent or call (800) 327-7030.
• Princess Cruises
  Princess Cruises offers seven-day cruises from Seattle to Alaska, on board the Golden Princess and the Sun Princess. Princess Cruises depart Saturdays and Sundays from the Terminal 30 Cruise Facility located at the south end of Seattle's downtown waterfront. For sales information please contact your local travel agent or call (800) 421-1700.
• Royal Caribbean (RCCL)
  Royal Caribbean offers seven-day cruises to Alaska on the Vision of the Seas departing Terminal 30 every Friday. For sales information please contact your local travel agent or call (866) 562-7625.

Airport transportation to cruise ships

There is an article about arriving and departing that lists all your options of getting into Seattle from the airport.  Usually the towncars are a nice option as they are flat rate and won't vary based on traffic delays.  In addition there is direct cruise ship service from Seatac airport via Graylineofseattle.com.  They offer a direct service from baggage claim to the cruise ships.  If your arriving on the day of your cruise this option will take you direct to your  ship if its Holland American or Princess.  These leave from Terminal 30.  NCL and others (Celebrity) leave from Pier 66 and are not served by this option.  While this is a nice service be aware of the following.  You must bring your baggage to door 00 in baggage claim.  This can be a considerable walk if you arrive on United.  It won't be bad if your on Delta or American as its much closer.  The other downside is the cost is per person of $18.  If you have even two people it may be more economical to use a taxi or towncar.  It will be about the same price and you don't have to deal with a 'group' departure time etc.  If you call #55 from a phone in baggage claim a towncar or limo will come direct to the door closest to you in baggage claim.  For cabs you must bring yourself and your luggage over the skybridge into the parking garage.