Howard University to Western Michigan University buses and trains from $102

Here are some trips other travelers have found on Routefriend.
$102
21h 39m
3 stops
Megabus Greyhound
$106
22h 20m
2 stops
Amtrak
$131
22h 9m
3 stops
Amtrak Greyhound
$147
23h 24m
3 stops
Megabus Amtrak