HAL offers the Seattle 3 1/2 hour excursion for those whose planw leaves after 2pm, our plane leaves Seattle at 2:05. Has anyone done this excursion? when did they drop you off at the airport? The other option can we leave our luggage at the port until we are ready to take the shuttle to the airport?
Just thinking out loud, it sounds like you could take the tour, but I don't have personal knowledge. These days it takes longer to clear ships coming into port. An NCL ship will let you stay onboard until you are ready to go.
If you left the ship at 10:00, you would be at the airport at 11:00 - that is pretty close to the recommended arrival time of two hours in advance of your flight.
The seatac airport is a pretty good distance from the docks, as I recall.
I am the editor, but I also speculate, ask questions and play devil's advocate. I reserve the right to change my mind.