# St Clair County International Airport (PHN / KPHN)

**St Clair County International Airport** (IATA: PHN, ICAO: KPHN) is a small airport in Port Huron, Michigan, United States. It opened in Nov 1951. It has 2 runways; the longest is 5,104 ft (1,556 m).

Web page: https://dromopedia.com/airports/kphn

## At a glance

- IATA / ICAO: PHN / KPHN
- FAA: PHN
- Type: Small airport
- Serves: Port Huron, Michigan, United States
- Opened: Nov 1951
- Elevation: 650 ft / 198 m
- Coordinates: 42.9110, -82.5289
- Runways: 2
- Longest runway: 5,104 ft / 1,556 m
- Instrument procedures: 3 approaches
- Time zone: UTC-5/-4 · America/Detroit
- Wikipedia: https://en.wikipedia.org/wiki/St._Clair_County_International_Airport (5 languages)
- Wikidata: https://www.wikidata.org/wiki/Q10847213
- Weather station: KPHN
- Ident: KPHN

## Timeline

- Nov 1951: St Clair County International Airport opens.

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| 04/22 | 5,104 ft / 1,556 m | 100 ft / 31 m | Asphalt | 036° / 216° | yes |
| 10/28 | 4,000 ft / 1,219 m | 75 ft / 23 m | Asphalt | 095° / 275° | yes |

## Rankings

Ranked among 48,075 open airports; = marks a shared place.

| Measure | Value | World | Region | Country |
| --- | --- | --- | --- | --- |
| Longest runway | 5,104 ft / 1,556 m | =6,109 of 29,858 | =2,035 in North America | #1,649 in US |
| Elevation | 650 ft / 198 m | #24,372 of 43,403 | #11,682 in North America | #9,718 in US |
| Age | Opened 1951 | =3,751 of 15,079 | =2,596 in North America | =2,536 in US |
| Runways | 2 | =715 of 29,978 | =435 in North America | =391 in US |

## Radio frequencies

| Type | Description | MHz |
| --- | --- | --- |
| A/D | SELFRIDGE APP/DEP | 119.600 |
| AWOS | AWOS 3 | 118.375 |
| UNIC | CTAF/UNICOM | 123.050 |

## Nearby airports

- [MI41](https://dromopedia.com/airports/mi41.md) Crystal Airport · 5.5 mi / 8.8 km
- [US-8396](https://dromopedia.com/airports/us-8396.md) Lenox Airport · 7.1 mi / 11 km
- [5Y5](https://dromopedia.com/airports/5y5.md) David's Landing Airport · 7.8 mi / 13 km
- [CA-0471](https://dromopedia.com/airports/ca-0471.md) Colinville Field · 9.1 mi / 15 km
- [D99](https://dromopedia.com/airports/mi99.md) Robertson Field · 10 mi / 16 km
- [39G](https://dromopedia.com/airports/39g.md) Avoca Airport · 11 mi / 18 km

## Sources

- [FAA NASR](https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/): US airport data: FAA National Airspace System Resources (Public Domain (US Government))
- [NOAA Aviation Weather Center](https://aviationweather.gov/data/api/): Weather data: NOAA Aviation Weather Center (Public Domain (US Government))
- [OurAirports](https://ourairports.com/data/): Airport data from OurAirports (Public Domain)
- [Wikidata](https://www.wikidata.org): Structured data from Wikidata (CC0 1.0)
- [timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder): Time zone boundaries © OpenStreetMap contributors, timezone-boundary-builder (ODbL 1.0)
- Every figure with its source: https://dromopedia.com/airports/kphn/data