Endicott College to Niagara University buses and trains from $74

Or, see buses and trains from Niagara University to Endicott College.
Here are some trips other travelers have found on Routefriend.
12h 30m
1 stop
Greyhound Amtrak
12h 40m
1 stop
14h 39m
1 stop
17h 49m
3 stops
Amtrak Greyhound