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The Pilots Desk
Small airport

Knox County Airport

ICAO K4I3Local 4I3🇺🇸 Mount Vernon
Coordinates
40.3287°N, 82.5238°W
Elevation
1,191 ft (363 m)
Type
Small airport
Region
US-OH
Time zone
New York(UTC-04:00)
Magnetic variation
7.6° W

Daylight today(Sep 2, 2026, local time)

Civil dawn
06:31
Sunrise
06:59
Sunset
20:02
Civil dusk
20:30

About 13h 3m 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 Knox County Airport

Knox County Airport is five miles southwest of Mount Vernon, in Knox County, Ohio.

Summary from Wikipedia licensed under CC BY-SA.

Live traffic nearby

Aircraft currently within ~40 nm, from live ADS-B. Positions are approximately real-time — not for navigation.

Loading live traffic…

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 (1)

RunwayLengthWidthSurfaceLightingStatus
10 / 285,504 ft / 1,678 m100 ftAspLightedOpen

Radio frequencies (5)

TypeDescriptionFrequency
A/DCOLUMBUS APP/DEP120.200 MHz
AWOSAWOS 3118.425 MHz
CLDCLNC DEL119.450 MHz
RDODAYTON RDO116.700 MHz
UNICCTAF/UNICOM123.050 MHz

Instrument procedures & charts

Cycle 2608 · effective Aug 6, 2026 – Sep 3, 2026 Not for navigation — confirm currency on the official FAA source.

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 Knox County Airport.

Wikipedia Live tracking (FR24) Open in Maps
🇺🇸 More airports in United States📘 Flying in the United States: a pilot's guide

Frequently asked questions

Where is Knox County Airport located?

Knox County Airport is small airport located in Mount Vernon, United States, at an elevation of 1,191 ft (363 m).

How many runways does Knox County Airport have?

Knox County Airport has 1 runway, the longest being 5,504 ft / 1,678 m.

What time zone is Knox County Airport in?

Knox County Airport is in the America/New York time zone (UTC-04:00).

What is the magnetic variation at Knox County Airport?

The magnetic variation (declination) at Knox County Airport is approximately 7.6° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.

What airports are near Knox County Airport?

The nearest airport to Knox County Airport is Wynkoop Airport (K6G4), about 2.5 nm to the nne, followed by Chapman Memorial Field and Bob Jenkins.

Is the information on this page suitable for flight planning?

No. Knox County Airport data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.