FSX – Manitowoc County Airport (KMTW), Manitowoc, Wisconsin, USA. Manitowoc Airport is a county owned, public use airport located two miles northwest of the downtown Manitowoc, a city in Manitowoc County, Wisconsin, United States. It is categorized it as a general aviation facility. Changes include re-aligned the taxiways, added parking, added buildings, added AWOS on 118.0. By Tony Vienonen.