Stamford, CT to Portland, ME buses and trains from $66

Or, see buses and trains from Portland, ME to Stamford, CT.
Here are some trips other travelers have found on Routefriend.
$66
6h 19m
2 stops
Metro-North Amtrak
$68
5h 24m
1 stop
Amtrak
$68
7h 19m
2 stops
Metro-North Amtrak