Harlem, Montana
48S Harlem
Harlem (48S) is a non-towered, public-use airport in Harlem, Montana, at 2,643 ft MSL. It has 2 runways: 11/29 (4,100 by 75 ft, asphalt), 15/33 (1,933 by 120 ft, turf). CTAF 122.9.
FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.
Airport
At a glance
- Identifiers
- FAA 48S
- Location
- Harlem, Montana (Blaine County). 3 NM N of the city center
- Elevation
- 2,643 ft MSL
- Position
- 48.5663° N, 108.7740° W
- Control tower
- No, non-towered
- Sectional chart
- Billings
- Magnetic variation
- 16° E (1985)
- Ownership
- Publicly owned, open to the public
- Attendance
- Unattended
2 runways
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 11/29 | 4,100 × 75 ft | Asphalt, good condition | Medium intensity |
| 15/33 | 1,933 × 120 ft | Turf, poor condition | Not listed |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 11 | Left traffic | None listed | None listed | None listed | Not listed |
| 29 | Left traffic | 2-light PAPI, left | None listed | None listed | Not listed |
| 15 | Left traffic | None listed | None listed | None listed | Not listed |
| 33 | Left traffic | None listed | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 122.9
- Actvt Mirl Ry 11/29 & Papi Ry 29 - Ctaf.
Before you go
Brief 48S in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Harlem, 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.