1965, the airline was flying one route between Appleton and Chicago-O'Hare with four round trips on weekdays and two round trips on Saturdays and Sundays operated with the British-manufactured Dove twin prop aircraft.

By the mid 1970s, Air Wisconsin was flying two small commuter turboprop airliner types, the de Havilland Canada DHC-6 and Fairchild Metroliner, and was operating