What is the best transportation from Seattle airport to the Amtrak station?

I arrive at Seatac 2 hours and a window to catch a train Regular Amtrak to Seattle to Portland. I have baggage. There are practical options eonomical taxi? Thanks for your help.

Allronix seems a good alternative. Just do not follow Amy's advice. Amtrak is not going to Tukwila – transit probe only (local train) to go. My advice would be a taxi, despite the costs. It will take you straight there and you do not have to worry about problems with baggage out of the tension and a bus.

Amazing Steam SP&S 700 Holiday Express Train