Airports US 29C
Small Airport
29C
29C

🇺🇸 Grindstone Air Harbor Airport

Port Austin, US-MI, US 640 ft America/Detroit
Updated Dec 4, 2025

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29C in 20 seconds
Grindstone Air Harbor Airport serves Port Austin, US.
AirportRoutes · updated Dec 4, 2025
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Where is Grindstone Air Harbor Airport located?

Grindstone Air Harbor Airport is located in Port Austin, US, at an elevation of 640 ft. Its IATA code is — and ICAO code is 29C.