# West Mountain Airport (3ID9)

**West Mountain Airport** (FAA: 3ID9) is a small airport in Cascade, Idaho, United States. It opened in Apr 2026. It has one runway, 2,400 ft (732 m) long, grass.

Web page: https://dromopedia.com/airports/3id9

## At a glance

- FAA: 3ID9
- Type: Small airport
- Serves: Cascade, Idaho, United States
- Opened: Apr 2026
- Elevation: 4,842 ft / 1,476 m
- Coordinates: 44.5342, -116.1124
- Runways: 1
- Longest runway: 2,400 ft / 732 m
- Time zone: UTC-7/-6 · America/Boise
- Weather station: KMYL
- Ident: 3ID9

## Timeline

- Apr 2026: West Mountain Airport opens.

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| 14/32 | 2,400 ft / 732 m | 45 ft / 14 m | Grass |  |  |

## Rankings

Ranked among 48,075 open airports; = marks a shared place.

| Measure | Value | World | Region | Country |
| --- | --- | --- | --- | --- |
| Longest runway | 2,400 ft / 732 m | =21,418 of 29,858 | =9,745 in North America | =8,429 in US |
| Elevation | 4,842 ft / 1,476 m | #2,245 of 43,403 | #1,192 in North America | #929 in US |
| Age | Opened 2026 | =14,961 of 15,079 | =12,077 in North America | =11,933 in US |
| Runways | 1 | =4,364 of 29,978 | =2,583 in North America | =2,326 in US |

## Nearby airports

- [ICS](https://dromopedia.com/airports/ku70.md) Cascade Airport · 5.5 mi / 8.9 km
- [US-0011](https://dromopedia.com/airports/us-0011.md) Cascade Reservoir Private Strip · 7.9 mi / 13 km
- [U84](https://dromopedia.com/airports/u84.md) Donald D. Coski Memorial Airport · 13 mi / 21 km
- [ID76](https://dromopedia.com/airports/us-5907.md) Elk Ridge Airport · 14 mi / 22 km
- [44ID](https://dromopedia.com/airports/44id.md) Boulder Creek Airstrip · 14 mi / 23 km
- [ID31](https://dromopedia.com/airports/us-7377.md) Bens Ranch Airport · 15 mi / 23 km

## Sources

- [FAA NASR](https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/): US airport data: FAA National Airspace System Resources (Public Domain (US Government))
- [NOAA Aviation Weather Center](https://aviationweather.gov/data/api/): Weather data: NOAA Aviation Weather Center (Public Domain (US Government))
- [OurAirports](https://ourairports.com/data/): Airport data from OurAirports (Public Domain)
- [timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder): Time zone boundaries © OpenStreetMap contributors, timezone-boundary-builder (ODbL 1.0)
- Every figure with its source: https://dromopedia.com/airports/3id9/data