Seattle Airport Hotel
 

Need a last minute hotel that is VERY convenient to the airport. Our departure flight is very early.

Anything on International Boulevard should work for you. Check TripAdvisor to get something decent.

There's a Wyndham (used to be, may be something else now) DIRECTLY across Int'l Blvd from the entrance. Nice enough place and you can easily walk over if you want to.

The Marriott and the Doubletree are probably the nicest but pretty much all the chains are represented and they are all right there.

This used to be good Priceline territory. Check out the hotels you might get near the airport by researching at biddingfortravel.com