Oshkosh, WI to Chicago, IL buses and trains from $26

Or, see buses and trains from Chicago, IL to Oshkosh, WI.
Here are some trips other travelers have found on Routefriend.
$26
21h 15m
1 stop
Greyhound
$26
1d 3h
2 stops
Greyhound
$26
3h 55m
0 stops
Greyhound
$26
4h 5m
1 stop
Greyhound
$46
5h 24m
1 stop
Amtrak
$34
4h 25m
1 stop
Greyhound Megabus
$46
3h 34m
1 stop
Greyhound Amtrak
$49
4h 50m
1 stop
Greyhound Amtrak
$49
5h 0m
1 stop
Greyhound Amtrak
$50
5h 34m
1 stop
Greyhound Amtrak
$50
5h 24m
1 stop
Greyhound Amtrak
$?
3h 55m
1 stop
Amtrak Greyhound
$?
4h 15m
1 stop
Amtrak Megabus
$?
1d 2h
3 stops
Amtrak Greyhound
$?
9h 50m
2 stops
Amtrak Greyhound
$?
9h 59m
3 stops
Greyhound Amtrak