Dane County Regional Airport, also known as Truax Field, is a civil-military airport located 6 nautical miles northeast of downtown Madison, Wisconsin. In the Federal Aviation Administration National Plan of Integrated Airport Systems for 2023–2027, it is one of two airports in Wisconsin that is categorized as a small-hub primary commercial ser…Dane County Regional Airport, also known as Truax Field, is a civil-military airport located 6 nautical miles northeast of downtown Madison, Wisconsin. In the Federal Aviation Administration National Plan of Integrated Airport Systems for 2023–2027, it is one of two airports in Wisconsin that is categorized as a small-hub primary commercial service facility; the other is Appleton International Airport. It is the second busiest of eight commercial airports in Wisconsin in terms of passengers served, after Milwaukee Mitchell International Airport.