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KDEC

DEC

Decatur Airport · Decatur

Key Facts

Technical summary and operational standards.

ILS Approach StatusILS FREQUENCIES VERIFIED ✅
Field Elevation
682 ft / 208 m
Transition Altitude
18,000 ft
Primary Channel
TWR 118.90 MHz (TWR)
Runway Summary
06/248,496 ftPEMLIGHTED
12/306,799 ftPEMLIGHTED
18/365,299 ftAsphaltLIGHTED

Mission Briefing & Tools

Direct calculators and pre-filled resources for this airport.

TOD CALC
Plan Descent
CROSSWIND
Check Limits
VDP CALC
Visual Point
CONVERTER
QNH / Fuel
SkyVector FlightAware Live METAR Satellite

Less math, more flying. Did this save your approach? 🛬

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Briefing for Decatur Airport (KDEC), United States. This facility features 3 active runways with an elevation of 682 ft. Verified ILS frequencies are available for precision approaches.Maintain a Transition Altitude of 18,000 ft for altimeter reset.

Airport Details

Full geographical and organizational metadata.

Full Name
Decatur Airport
ICAO / IATA
KDEC / DEC
Municipality
Decatur
Country
Region
US-IL
GPS Coordinates
Transition Altitude
18,000 ft
Official Website
—
Wikipedia

Runways & ILS Approach Data

Detailed dimensions and verified landing frequencies.

Runway 06 / 24
ILSLIGHTED
Length: 8,496 ft / 2,590 m
Surface: PEM
Heading: 59.1° / 239.1°
RWY 06
110.90 MHz
ID: DEC | CRS: 60°
RWY 24
No ILS
Runway 12 / 30
LIGHTED
Length: 6,799 ft / 2,072 m
Surface: PEM
Heading: 119° / 299°
RWY 12
No ILS
RWY 30
No ILS
Runway 18 / 36
LIGHTED
Length: 5,299 ft / 1,615 m
Surface: Asphalt
Heading: 179.1° / 359.1°
RWY 18
No ILS
RWY 36
No ILS

Communication Frequencies

ATC and advisory channels.

A/D CHAMPAIGN APP/DEP
132.85 MHz
ATIS ATIS
126.35 MHz
CTAF CTAF
118.90 MHz
GND GND
121.75 MHz
RDO ST LOUIS RDO
122.30 MHz
TWR TWR
118.90 MHz
UNIC UNICOM
122.95 MHz

Nearby Airports

Alternatives in the vicinity.

KCMI ILS
University of Illinois Willard Airport
55 km
KSPI ILS
Abraham Lincoln Capital Airport
69 km
KBMI ILS
Central Illinois Regional Airport at Bloomington-Normal
72 km
KPIA ILS
General Wayne A. Downing Peoria International Airport
116 km
KHUF ILS
Terre Haute Regional Airport, Hulman Field
140 km

Data Source: OurAirports · Technical Briefing Jan 2026
ILS Data Source: AIP / FAA NASR Cycle Verified