Seattle - Airport to Pier

We booked an Inside Passage cruise leaving Seattle at 4:00 p.m. (on the Diamond). Our flight arrives at 12:15 p.m. Will this flight schedule give us enough time to make it to the pier with time to spare or will we be cutting it close? The ship's info says passengers must be on board by 3:30 p.m. Never having been to Seattle, I'm not sure if we'll have plenty of time to meet this deadline, or if we should consider arriving a day early. I'd appreciate your thoughts. Thanks.

Yes - we landed at the same time last year in SEA for Diamond and were in great shape.
Just hope your plane isn't delayed too much!

[marybeth]

You're about 30 minutes from Seatac to downtown. Assuming no flight delays you should be just fine.

I was just in Seattle visiting my son....you should have "plenty" of time....it's only about 30 to 35 minutes away from the airport....