The closest airport is Dane County Regional Airport (Madison). Next closest is Milwaukee, and the Chicago airports (O'Hare and Midway) are also fairly close.
Badger Coaches runs regular trips between the Milwaukee airport and Madison.
From the Chicago airports, Van Galder offers frequent buses to Madison.
Simply pick your start and end points from the drop-down lists below, or click on the last item to enter a different location. Then click "Go." After a few seconds, a map and directions will appear below.
For even more detail or alternate routes, you can then click on "View Larger Map."