KPHN St Clair County International Airport is a flight simulator airport at Port Huron, Michigan, United States. It has an elevation of 643 ft and a longest runway of 5,068 ft (Hard) with ILS.

Runways: 10 3,952 ft (H) · 28 3,952 ft (H) · 04 5,068 ft (H - ILS) · 22 5,068 ft (H)