Ahh yes, the bus to Sea-tac.
http://transit.metrokc.gov
The 194 to Seattle takes you from Sea-tac to downtown with only a couple of stops. It stops in the bus tunnel in downtown. The bus stop at the airport is on the baggage claim level on the south end of the terminal. It runs about twice an hour. The 174 also goes to downtown but stops FREQUENTLY between the airport and downtown. I've taken these routes before so if you need anymore info that you can't find on the website, email me.
And fares aren't simply $1.25; they are confusing (and I don't pay attention to fares because I have a pass). For example, a peak hour trip (3-6pm) from the airport to downtown is $2. Read the fare info online.
[This message has been edited by whlinder (edited 05-10-2002).]