George Washington University to Fairleigh Dickinson University-Metropolitan buses and trains from $24

Here are some trips other travelers have found on Routefriend.
$24
5h 25m
2 stops
BoltBus NJTransit
$67
5h 9m
3 stops
Amtrak NJTransit
$87
4h 52m
2 stops
Amtrak NJTransit
$91
4h 10m
2 stops
Amtrak NJTransit
$101
4h 52m
2 stops
Amtrak NJTransit
$122
4h 10m
2 stops
Amtrak NJTransit
$138
6h 51m
3 stops
Amtrak NJTransit