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
6
▼ 42.6%
DEP / DAY
6
▼ 51.6%

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 6 arrivals and 6 departures per day on average over the last 7 days.

Safety incidents

Last 7 days · 0 total

NORMAL
↻
Go-arounds
0
✕
Rejected takeoffs
0
△
Unstable approaches
0
↺
Return to field
0

Current weather

Latest METAR observation

18m ago
Temp
48°F
Wind
0 kts
0°
Visib
8047 m
Ceil
—
METAR KPHN 230956Z AUTO 00000KT 5SM BR CLR 09/08 A3015 RMK AO2

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
43% of ops
397 land · 270 TO
10
23% of ops
211 land · 44 TO
22
23% of ops
208 land · 278 TO
28
11% of ops
104 land · 179 TO
Runway 04 carries 43% of operations (397 landings, 270 takeoffs) over the last 30 days. The next most-used is 10 at 23%.

Approach quality

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

04 397 landings
UA 13%
10 211 landings
UA 15%
22 208 landings
UA 9%
28 104 landings
UA 10%
Approaches to 04 show a 13% unstable-approach rate (53 UA events from 397 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
18.2
flights/day · 546 total
Busy hour (local)
3pm
also 2pm · 1pm
Day vs night
75%
06:00–20:00 local
Traffic concentrates around 1pm–3pm local, averaging 18.2 flights/day. Weekend volume runs 1.1× weekday (20.8 vs 18.1 daily).

Aircraft character

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

105 · 31%
45 · 13%
29 · 9%
21 · 6%
15 · 4%
15 · 4%
Activity is led by (31% of 337 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 10:14 UTC