By bus
Greyhound Bus Lines
Greyhound offers service into Oshkosh from many cities in the region. The stop at the airport terminal is a couple of kilometers south of downtown.
Fox Valley Shuttle
Runs about 8 scheduled trips between Milwaukee airport, Oshkosh, and other cities. Allow 2 hours to get to MKE. Picks up here only if they have a paid reservation here. Discount for booking online.
By plane
Oshkosh does not have any commercial air service, but Wittman Regional Airport (http://www.wittmanairport.com) KOSH can support any private aircraft that wish to land. If you plan to fly in here during Airventure, you will find yourself among tens of thousands of other aircraft doing the same thing. You absolutely must get the Airventure NOTAM from the Airventure website and follow it carefully.
Regional commercial air service is available in Appleton ATW which is 20 minutes north. In some cases it may be worthwhile to use Milwaukee MKE, 90 minutes south, or Green Bay GRB, an hour to the north, and come the rest of the way by road.