Ennis, Montana
KEKS Ennis Big Sky
Ennis Big Sky (KEKS) is a non-towered, public-use airport in Ennis, Montana, at 5,432.6 ft MSL. Its runway is 16/34 (7,600 by 100 ft, asphalt). Right traffic for runway 16. CTAF 122.8.
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 KEKS, FAA EKS
- Location
- Ennis, Montana (Madison County). 6 NM SE of the city center
- Elevation
- 5,432.6 ft MSL
- Position
- 45.2757° N, 111.6489° W
- Control tower
- No, non-towered
- Sectional chart
- Great Falls
- Magnetic variation
- 12° E (2015)
- Fuel
- 100LL, Jet A-1, Jet A-1+
- Ownership
- Publicly owned, open to the public
- Attendance
- Daily 0700-1700
1 runway
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 16/34 | 7,600 × 100 ft | Asphalt, excellent condition | Medium intensity |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 16 | Right traffic | 4-light PAPI, left | None listed | None listed | Not listed |
| 34 | Not stated | 4-light PAPI, left | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 122.8
- Actvt Mirl Rwy 16/34 - Ctaf. Papi Rwy 16 & 34 Opr Consly.
- UNICOM
- 122.8
- Approach / departure
- 118.975
- "Big Sky"
Weather station
- AWOS-3P EKS
- 119.85
Before you go
Brief KEKS in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Ennis Big Sky, 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.