Hartford, CT to Washington, DC buses and trains from $52

Or, see buses and trains from Washington, DC to Hartford, CT.
Here are some trips other travelers have found on Routefriend.
$52
7h 55m
1 stop
Amtrak BoltBus
$63
6h 10m
0 stops
Amtrak
$79
5h 36m
1 stop
Amtrak Amtrak