Eckhart International (1S1)
Non-towered public-use airport serving Porthill, Idaho, at 1,758 ft elevation.
Elevation1,758 ft
ControlNon-towered
Longest runway3,650 ft
Magnetic variation20° E
Live weather
Forecast (TAF)
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Frequencies
| CTAF | 122.8 |
|---|---|
| UNICOM | 122.8 |
Runways
| Runway | Size | Surface | Lights |
|---|---|---|---|
| 15/33 | 3,650 × 175 ft | Turf |
No fuel listed. Sectional: Great Falls.
Runway diagram
Drawn to scale from FAA runway-end data, true north up. Not for navigation: use the official FAA airport diagram and Chart Supplement.
Nearby airports
65SBoundary County18 NM SE67SPriest Lake Usfs31 NM SW66SCavanaugh Bay31 NM SWKSZTSandpoint42 NM S1S6Priest River51 NM SS77Magee70 NM S
Before you fly here
- Read the FAA Chart Supplement entry for 1S1: traffic pattern, CTAF/UNICOM, hours, fuel and remarks.
- Check NOTAMs and get a weather briefing at 1800wxbrief.com.
- Study the airport diagram and the sectional around 1S1 for airspace and terrain.
- More detail: AirNav · SkyVector
Airport data from the FAA National Airspace System Resource (NASR) subscription effective Oct 1, 2026; magnetic variation as published for 1985. Weather is live from aviationweather.gov. Always confirm with current official sources before flight. This guide is a study aid.