KPHN
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KPHN — St Clair County International Airport

St Clair County International Airport

Non-ToweredPort Huron, MI • 650' MSL

KPHN WeatherLive METAR & TAF

Wind Component

KPHN Runways2 runways

KPHN has 2 runways. The longest is 4/22 at 5,104 ft × 100 ft (asphalt).

4/22Lighted5,104 ft × 100 ftAsphalt
10/28Lighted4,000 ft × 75 ftAsphalt

FAA NASR data, cycle 2026-09-03

KPHN Field Data

KPHN field elevation is 650 ft MSL. The standard traffic pattern altitude at KPHN is 1,650 ft MSL (1,000 ft AGL). Fuel available at KPHN: 100LL, Jet A+.

Field elevation650 ft MSL
Pattern altitude1,650 ft MSL1,000 ft AGL · standard
Fuel100LL, Jet A+Availability — call for price
Control towerNon-towered

FAA NASR data, cycle 2026-09-03

KPHN Frequencies

CTAF 123.05 MHz — KPHN is non-towered; self-announce position and intentions on CTAF.

AWOS118.375
Approach/Departure119.6
CTAF123.05
UNICOM123.05

Airports Near KPHNwithin 50 nm

MI41Crystal AirportSt. Clair, MI · 2,700' runway4.8 nmSUS-8396Lenox AirportColumbus, MI · 645' MSL6.1 nmSW5Y5David's Landing AirportSt Clair, MI · 2,500' runway6.8 nmSD99Robertson FieldRichmond, MI · 2,300' runway8.7 nmSW39GAvoca AirportAvoca, MI · 2,105' runway9.5 nmNWMI01Fasel FieldAvoca, MI · 2,300' runway11 nmNW2E2Sharpe's StripEmmett, MI · 2,700' runway11 nmWNW76GMarine City AirportMarine City, MI · 3,100' runway12 nmSSWMI15Wards Long Acres AirportFair Haven, MI · 1,700' runway12 nmSSWKMTCSelfridge Air National Guard Base AirportMount Clemens, MI · Towered22 nmSWKDETColeman A. Young Municipal AirportDetroit, MI · Towered37 nmSWKPTKOakland County International AirportPontiac, MI · Towered42 nmWSW
All Michigan airports

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Frequently Asked About KPHN

Is KPHN (St Clair County International Airport) a towered airport?

No, KPHN is a non-towered airport. The CTAF frequency is 123.05 MHz.

What is the AWOS frequency for KPHN?

The AWOS frequency at KPHN (St Clair County International Airport) is 118.375 MHz.

How long is the runway at KPHN?

KPHN has 2 runways (4/22, 10/28). The longest runway is 5,104 feet.

Which runway is longest at KPHN?

Runway 4/22 is the longest at KPHN — 5,104 ft × 100 ft, asphalt.

What is the traffic pattern altitude at KPHN?

KPHN uses the standard traffic pattern altitude of 1,000 feet AGL — about 1,650 feet MSL at a field elevation of 650 feet.

Does KPHN have fuel?

Yes. KPHN (St Clair County International Airport) has 100LL, Jet A+ available. Call the field for hours, self-serve availability and price.

What is the elevation of KPHN?

KPHN (St Clair County International Airport) has a field elevation of 650 feet MSL.

Where is KPHN located?

KPHN (St Clair County International Airport) is located in Port Huron, MI.