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St. Clair County International Airport (PHN/KPHN) is a county-owned public airport located about three miles southwest of Port Huron, Michigan, near the Blue Water Bridge and the Canadian border. It primarily serves general aviation, business, and charter aircraft with two paved runways and a small terminal/FBO complex. Its international designation and proximity to Ontario make it a convenient gateway for southeast Michigan's Thumb region.
💡 Local Tip
Frequent visitors call the FBO ahead for after-hours fuel and gate access, and they check NOTAMs for runway or customs closures—especially on weekends when local training traffic picks up.
🚖 Getting There
PHN is accessed by car via I-94/US-69 and Wadhams Road; there is no direct public transit to the terminal. Taxis, rideshares, and shuttle services are limited, so pre-book ground transport if you need a ride. Downtown Port Huron and the Blue Water Bridge to Sarnia, Ontario, are about 10 to 15 minutes away.
❓ Frequently Asked Questions
Q: Does PHN have commercial airline service?
A: No, St. Clair County International Airport is primarily a general aviation airport; travelers usually connect through Detroit Metropolitan (DTW) or Flint Bishop (FNT) for scheduled flights.
Q: How far is the airport from downtown Port Huron?
A: It is roughly 3 to 5 miles southwest of downtown Port Huron, about a 10-minute drive.
Q: Is U.S. Customs available at PHN?
A: The airport has international capabilities for general aviation, but customs hours and availability can vary; pilots should confirm with U.S. Customs and Border Protection before arriving from Canada or another country.
Q: What on-site services can pilots and passengers expect?
A: FBO services typically include fuel, hangars, tie-downs, a pilot lounge, and restrooms; rental cars and courtesy cars may be limited, so arrange ground transportation in advance.
AI-generated content · Generated Oct 1, 2026 · deepseek-v4.1-flash