Airports / KPHN / St Clair County International AirportIATA PHNGood ground coverage
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📍 Port Huron⬆ 650 ft2 runways
KPHN · PHN

St Clair County International Airport

42.91100°N
-82.52890°W
ARR / DAY
3
▼ 51.0%
DEP / DAY
6
▼ 37.7%

St Clair County International Airport (KPHN/PHN) is a small general aviation airport located in Port Huron, MI, 34 mi north east of Sterling Heights. It features 2 runways with the longest being 5,104 feet. SkyMeter has observed roughly 3 arrivals and 6 departures per day on average over the last 7 days.

Safety incidents

Last 7 days · 2 total

REVIEW →
↻
Go-arounds
0
✕
Rejected takeoffs
0
△
Unstable approaches
2
↺
Return to field
0

Current weather

From CYZR, 13 mi away — KPHN does not publish METAR

46m ago
Temp
68°F
Wind
3 kts
330°
Visib
10+ km
Ceil
—
METAR CYZR 080300Z AUTO 33003KT 9SM CLR 20/19 A3006 RMK SLP181 DENSITY ALT 1200FT

Runways

2 installed

5,104 FT MAX
04/22
5,104 ft × 100
ASP● LITHIGH
10/28
4,000 ft × 75
ASP● LITMED

Runway intelligence

Which runway carries the operations, observed over the last 30 days

04
45% of ops
166 land · 92 TO
10
27% of ops
98 land · 18 TO
22
18% of ops
67 land · 135 TO
28
10% of ops
36 land · 77 TO
Runway 04 carries 45% of operations (166 landings, 92 takeoffs) over the last 30 days. The next most-used is 10 at 27%.

Approach quality

Per-runway unstable-approach, go-around, and long-rollout rates

04 166 landings
UA 19%
10 98 landings
UA 19%
22 67 landings
UA 9%
28 36 landings
UA 11%
Approaches to 04 show a 19% unstable-approach rate (31 UA events from 166 landings).Phase B will add wind-correlation: which crosswind band produces most UA events.

Traffic behavior

When the field is busy — hourly + weekday vs weekend

Daily avg
15.2
flights/day · 457 total
Busy hour (local)
3pm
also 8pm · 6pm
Day vs night
68%
06:00–20:00 local
Traffic concentrates around 3pm–6pm local, averaging 15.2 flights/day. Weekend volume runs 1.0× weekday (15.6 vs 15.8 daily).

Aircraft character

What's actually flying here — top types over the last 30 days

85 · 28%
41 · 13%
29 · 10%
23 · 8%
21 · 7%
12 · 4%
Activity is led by (28% of 305 flights). Top three types: , , .

Communications Frequencies

2026-06-11
Type Freq (MHz) Hours
CTAF 123.050 —
APCH 119.600 —
APCH 391.900 —
UNICOM 123.050 —
AWOS 118.375 —
OTHER 126.525 —
ALGONAC 126.525 —
OTHER 285.525 —
ALGONAC 285.525 —
Airport operations
ARTCC:
ZOB
Mag var:
7° W
Fuel:
100LL, A+

Hourly traffic

Avg movements per hour · local time · last 30 days

12a 1a 2a 3a 4a 5a 6a 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p 8p 9p 10p 11p

Pilot & community notes

1 comment from OurAirports — click to expand

1
Tony
07/21/2007
Clear US Customs here going to the USA
A nice convenient little airport to clear US Customs if you are heading West from Southern Ontario.
© SkyMeter · All flight data subject to ODbL attribution · Updated 03:46 UTC