City University of Seattle to University of Oregon buses and trains from $41

Here are some trips other travelers have found on Routefriend.
$41
6h 15m
0 stops
Amtrak
$46
8h 45m
2 stops
Greyhound Amtrak
$51
6h 40m
1 stop
Amtrak
$52
11h 34m
2 stops
Greyhound Amtrak