Grasmere (U91)
Non-towered public-use airport serving Grasmere, Idaho, at 5,144 ft elevation.
Elevation5,144 ft
ControlNon-towered
Longest runway2,750 ft
Magnetic variation16° E
High elevation. At 5,144 ft, density altitude on a warm day can be thousands of feet higher. Check performance with the density altitude calculator.
Live weather
Forecast (TAF)
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Frequencies
| CTAF | 122.9 |
|---|
Runways
| Runway | Size | Surface | Lights |
|---|---|---|---|
| 05/23 | 2,750 × 150 ft | Dirt |
No fuel listed. Sectional: Salt Lake City.
Nearby airports
3U0Murphy Hot Springs32 NM SEU89Glenns Ferry Municipal42 NM NEU76Mountain Home Municipal46 NM NU03Buhl Municipal50 NM E1U3Murphy59 NM NWKGNGGooding Municipal59 NM NE
Before you fly here
- Read the FAA Chart Supplement entry for U91: 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 U91 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.