Auburn, NY to Niagara University buses and trains from $28

Or, see buses and trains from Niagara University to Auburn, NY.
Here are some trips other travelers have found on Routefriend.
$28
3h 37m
0 stops
Amtrak
$80
6h 37m
2 stops
Amtrak Greyhound
$118
15h 21m
1 stop
GotoBus Amtrak