St Clair County International Airport
Daylight today(Sep 1, 2026, local time)
About 13h 11m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About St Clair County International Airport
St. Clair County International Airport is a public airport owned by the government of St. Clair County, Michigan, United States. It is located in Kimball Township, five miles (8 km) southwest of the central business district (CBD) of Port Huron. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a regional reliever airport facility.
Summary from Wikipedia licensed under CC BY-SA.
Live weather
KPHNNOTAMs
KPHNReference only — not an official briefing. Always obtain a certified briefing (e.g. 1800wxbrief.com / your AIS) before flight.
NOTAM data via the FAA NOTAM system.
Live departures & arrivals
Flight data by AeroDataBox. Times are estimates — not for navigation; confirm with the airline.
Where you can fly from here
Current scheduled routes & daily frequency by AeroDataBox. Approximate — confirm bookable schedules with the airline.
Live traffic nearby
Aircraft currently within ~40 nm, from live ADS-B. Positions are approximately real-time — not for navigation.
Live ADS-B by adsb.lol & the OpenSky Network. Not for navigation.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (2)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| 04 / 22 | 5,104 ft / 1,556 m | 100 ft | Asp | Lighted | Open |
| 10 / 28 | 4,000 ft / 1,219 m | 75 ft | Asp | Lighted | Open |
Radio frequencies (3)
| Type | Description | Frequency |
|---|---|---|
| A/D | SELFRIDGE APP/DEP | 119.600 MHz |
| AWOS | AWOS 3 | 118.375 MHz |
| UNIC | CTAF/UNICOM | 123.050 MHz |
Instrument procedures & charts
Instrument approaches (3)
Takeoff & alternate minimums (2)
Showing 5 of 5 FAA procedures on this overview. Always fly the current, official chart. Full charts page.
Nearby airports
Great-circle distance and true bearing from St Clair County International Airport.
Frequently asked questions
What is the ICAO code for St Clair County International Airport?
The ICAO code for St Clair County International Airport is KPHN, and its IATA code is PHN.
Where is St Clair County International Airport located?
St Clair County International Airport is small airport located in Port Huron, United States, at an elevation of 650 ft (198 m).
How many runways does St Clair County International Airport have?
St Clair County International Airport has 2 runways, the longest being 5,104 ft / 1,556 m.
What time zone is St Clair County International Airport in?
St Clair County International Airport is in the America/Detroit time zone (UTC-04:00).
What is the magnetic variation at St Clair County International Airport?
The magnetic variation (declination) at St Clair County International Airport is approximately 8° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near St Clair County International Airport?
The nearest airport to St Clair County International Airport is Crystal Airport (MI41), about 4.8 nm to the s, followed by Lenox Airport and David's Landing Airport.
Is the information on this page suitable for flight planning?
No. St Clair County International Airport data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.