Hartford, CT to Philadelphia, PA buses and trains from $42

Or, see buses and trains from Philadelphia, PA to Hartford, CT.
Here are some trips other travelers have found on Routefriend.
4h 52m
1 stop
Amtrak GotoBus
5h 57m
1 stop
Amtrak GotoBus
4h 12m
0 stops
6h 49m
2 stops
Amtrak NJTransit
4h 1m
1 stop
Amtrak Amtrak
5h 18m
1 stop
Amtrak BoltBus