How to get from the Uni of Oregon to Portland airport?

On this Saturday afternoon, I need to ge from the Uni of Oregon, Eugene OR to Portland airport (PDX). Are there any bus or any other public transportation running from U of O to Portland?|||Use the Greyhound bus to downtown Portland, then walk (or jump on the bus) South from the Greyhound Terminal to the MAX (lightrail) line and ride the RED line to the PDX terminal.