Getting to and from the Airport to Downtown
Taxi service costs around $45 one way.
There is Link Light Rail from the airport to Westlake Station near the Convention Center. Click here for more information. Here is a video on how to get from baggage claim to Link Light Rail at the airport.
There are three app-based rideshare providers at Sea-Tac airport: Uber, Lyft and Wingz.The majority of Lyft, Uber, and Wingz cars pick-up on the 3rd floor of the airport parking garage.
Getting to and from the Washington State Convention Center
Please go to this link for information.
General Transportation Information
Visit Seattle provides answers to most questions here.