1
Runway
5
Frequencies
6
Procedures
1
NOTAM
Quick Facts
ICAO
K4I3
FAA
4I3
Elevation
1,191 ft MSL
Runways
1
Frequencies
5
Tower
No
Fuel
100LL,A+
Coordinates
40.329, -82.524
Airport Information
Facility Type
AIRPORT
Elevation
1,191 ft MSL
Control Tower
No
Fuel Types
100LL,A+
Traffic Pattern
808 ft MSL
ARTCC
INDIANAPOLIS
Coordinates
40.3287, -82.5238
Ownership
Public
Hours of Operation
Current Weather
METAR K4I3 131955Z AUTO 30020G29KT 10SM FEW036 BKN060 17/09 A2984 RMK AO2 PK WND 31029/50
Flight Category
VFR
Wind
300° at 20 kt G29
Visibility
10+ SM
Temperature
17°C
Dewpoint
9°C
Altimeter
1010.60 inHg
Cloud Cover
BKN
Observed 2026-05-13 19:55Z
Runways
| ID | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 10/28 | 5,504 ft | 100 ft | ASP | - |
Frequencies
| Type | Frequency | Name |
|---|---|---|
| A/D | 120.2 | COLUMBUS APP/DEP |
| ATIS | 118.425 | AWOS 3 |
| CLD | 119.45 | CLNC DEL |
| RDO | XXX.XXX | DAYTON RDO |
| UNIC | XXX.XXX | CTAF/UNICOM |
Active NOTAMs
4I3 26/002
2026-05-15 05:00 – 2026-05-15 10:00
IFR Procedures
1 STARs, 2 Runway, 3 Approaches
Nearby Airports in Ohio
0D7
ADA
ADA — 949 ft
K0D7
Ada Airport
Ada — 949 ft
83OH
Adams Strip
Pleasant Hill — 973 ft
83OH
ADAMS STRIP
PLEASANT HILL — 973 ft
50OH
Aerodrome Les Noyers
Jamestown — 1,085 ft
50OH
AERODROME LES NOYERS
JAMESTOWN — 1,085 ft
55OI
AERO FLIGHT CENTER
EAST PALESTINE — 1,140 ft
55OI
Aero Flight Center Airport
East Palestine — 1,140 ft
Nearest airports
- 0D7 — ADA
ADA
- K0D7 — Ada Airport
Ada
- 83OH — Adams Strip
Pleasant Hill
- 83OH — ADAMS STRIP
PLEASANT HILL
- 50OH — Aerodrome Les Noyers
Jamestown
Ohio airports
K4I3 Operational Overview
Location & Facility
Knox County Airport (K4I3) is a publicly owned airport open to the public located in Mount Vernon, Ohio, United States. The field sits at an elevation of 1,191 feet above mean sea level (MSL) at coordinates 40.3287°N, 82.5238°W.
Runways
Knox County Airport has 1 runway. The longest runway (10/28) measures 5,504 feet by 100 feet with a asp surface.
Communications & Operations
Knox County Airport is a non-towered (pilot-controlled) field. ATIS is available on 118.425 MHz. A total of 5 communication frequencies are published for this facility.
Services & Fuel
Knox County Airport offers 100LL,A+ fuel. Pilots planning fuel stops should confirm availability with the FBO, as hours and pricing may vary.
Instrument Procedures
Knox County Airport has 6 published instrument flight procedures, including 1 approach. These procedures are updated on the 28-day AIRAC cycle. Sign up for AeroCopilot to view full procedure charts with waypoint maps and altitude profiles.
Current Conditions
The current flight category at Knox County Airport is VFR (Visual Flight Rules — good flying conditions). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations. There is currently 1 active NOTAM for this facility.
Frequently Asked Questions
What is K4I3?
K4I3 is the ICAO identifier for Knox County Airport, a public-use airport located in Mount Vernon, Ohio, United States.
How many runways does Knox County Airport have?
Knox County Airport (K4I3) has 1 runway. See the runway table above for dimensions and surface types.
What is the elevation of K4I3?
The field elevation of Knox County Airport is 1,191 feet above mean sea level (MSL).
Is fuel available at K4I3?
Yes, Knox County Airport offers 100LL,A+ fuel.
What are the current weather conditions at K4I3?
The current flight category at Knox County Airport is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at K4I3?
There are currently 1 active NOTAM for Knox County Airport. Sign up for AeroCopilot to read decoded NOTAM text and AI interpretations.
How do I access complete data for K4I3?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for Knox County Airport.
Where is Knox County Airport located?
Knox County Airport (K4I3) is located in Mount Vernon, Ohio, United States, at an elevation of 1,191 ft MSL.