St. Clair County International
PHN · KPHN · Port Huron, Michigan · St Clair County · map
St. Clair County International is a public-use airport owned by Saint Clair County, 5 miles southwest of Port Huron, Michigan, 650 feet above sea level. It has 2 runways; the longest, 04/22, is 5,104 feet of asphalt. It has fuel (100LL avgas, Jet A with additive).
The airport
- Codes
- FAA PHN · ICAO KPHN
- Kind
- Airport · open to the public · publicly owned
- Owner
- Saint Clair County
- Elevation
- 650 feet above sea level
- Control tower
- No control tower
- Attended
- every day, 8:00 am to 5:00 pm
- Lights
- runway lights see the remarks below; beacon sunset to sunrise
- Fuel
- 100LL avgas, Jet A with additive
- Repairs
- airframe: major repairs; engine: major repairs
- Parking
- hangar, tiedown
- Notes
- landing fee · customs available
- On the chart
- Detroit sectional
- Magnetic variation
- 7W
- In the FAA's files since
- November 1951
Runways 2
For understanding the field, not for navigation.
| Runway | Length × width | Surface | Lights |
|---|---|---|---|
| 04/22 | 5,104 × 100 ft | Asphalt, good | High-intensity lights |
| 10/28 | 4,000 × 75 ft | Asphalt, good | Medium-intensity lights |
- Runway 04: ILS, PAPI, four lights on the left, medium-intensity approach lights with runway alignment lights (MALSR), tree 49 ft high 592 ft from the end
- Runway 22: PAPI, four lights on the left, tree 76 ft high 1,870 ft from the end
- Runway 10: PAPI, four lights on the left, tree 71 ft high 1,386 ft from the end
- Runway 28: PAPI, four lights on the left, tree 57 ft high 1,173 ft from the end
Radio frequencies
| Common traffic advisory (CTAF) · UNICOM | 123.05 | |
| Approach and departure | 119.6 | |
| Phn and aWOS-3P | 118.375 | |
| Algonac and center (remote transmitter) High | 126.525 |
Automated weather (AWOS-3P), by phone 810-364-7787.
Wind map live wind over the area, from Windy.com
Colours show wind speed, the moving lines its direction; drag the time bar for the coming days. Map and forecast by Windy.com.
Aircraft registered in Port Huron from the FAA register
8 aircraft are registered to owners in Port Huron, Michigan: 8 piston singles. Not every one of them is based at this airport; the based-aircraft count above is the FAA's figure for this airport alone.
Individuals are counted, never named. All aircraft registered in Michigan.
Accidents and incidents at or near this airport NTSB records · 17 since 1982, 3 fatal
Cases the NTSB recorded with this as the nearest airport, newest first. Each opens the full report in plain English.
Nearby within 30 nautical miles
The FAA's remarks as written in the airport file
- Deer and large birds on and in the vicinity of airport.
- Activate approach lights (MALSR) runway 04; runway end identifier lights runway 22, 10, and 28; PAPI runway 10 and 28; high-intensity runway lights runway 04/22; medium-intensity runway lights runway 10/28 - the common traffic frequency. PAPI runway 04 and 22 operates continuously.
- Commercial and corporate landing fee waived with fuel purchase.
- Unatndd major holidays.
Facts from the FAA's airport file effective October 1, 2026, written out in plain English; weather from the National Weather Service's aviation weather service; registered aircraft from the FAA register as of October 5, 2026; accidents from the NTSB's public database. Owners are shown only when they are an organisation; no person is named. Check the official sources before a flight: this page is for understanding an airport, not for planning one.