Decatur, Illinois
KDEC Decatur
Decatur (KDEC) is a towered, public-use airport in Decatur, Illinois, at 681.9 ft MSL. It has 3 runways: 06/24 (8,496 by 150 ft, asphalt and concrete), 12/30 (6,799 by 150 ft, asphalt and concrete), 18/36 (5,298 by 150 ft, asphalt). CTAF 118.9.
FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.
Airport
At a glance
- Identifiers
- ICAO KDEC, FAA DEC
- Location
- Decatur, Illinois (Macon County). 4 NM E of the city center
- Elevation
- 681.9 ft MSL
- Position
- 39.8346° N, 88.8657° W
- Control tower
- Yes (ATCT)
- Sectional chart
- St Louis
- Magnetic variation
- 1° W (2000)
- Fuel
- 100LL, Jet A
- Ownership
- Publicly owned, open to the public
- Attendance
- MON-FRI ALL; SAT SUN 0700-2130
3 runways
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 06/24 | 8,496 × 150 ft | Asphalt and Concrete, good condition | High intensity |
| 12/30 | 6,799 × 150 ft | Asphalt and Concrete, good condition | Medium intensity |
| 18/36 | 5,298 × 150 ft | Asphalt, good condition | Medium intensity |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 06 | Left traffic | None listed | ILS/DME | None listed | 8,496 ft |
| 24 | Left traffic | 4-box VASI, left | None listed | None listed | 8,496 ft |
| 12 | Left traffic | None listed | None listed | None listed | 6,799 ft |
| 30 | Left traffic | 4-light PAPI, left | None listed | None listed | 6,799 ft |
| 18 | Left traffic | 4-light PAPI, left | None listed | None listed | 5,298 ft |
| 36 | Left traffic | 4-box VASI, left | None listed | None listed | 5,298 ft |
VHF
Frequencies
- ATIS
- 126.35
- "Decatur". Hours 0600-2200
- CTAF
- 118.9
- UNICOM
- 122.95
- Tower
- 118.9
- "Decatur". Hours 0600-2200
- Ground
- 121.75
- "Decatur". Hours 0600-2200
- Approach / departure
- 132.85
- "Champaign"
Weather station
- ASOS DEC
- No frequency listed
Before you go
Brief KDEC in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Decatur, in the app on iPhone and iPad.
Not for navigation. Verify with current FAA charts and the Chart Supplement before flight.
Source: FAA NASR 28-day subscription, cycle effective Oct 29, 2026. Airport data changes every 28 days and NOTAMs can override it at any time.