# Lemhi County Airport (SMN / KSMN)

**Lemhi County Airport** (IATA: SMN, ICAO: KSMN) is a medium airport in Salmon, Idaho, United States. It opened in Apr 1940. It has one runway, 5,510 ft (1,679 m) long, asphalt. In 2020 it handled 373 passengers.

Web page: https://dromopedia.com/airports/ksmn

## At a glance

- IATA / ICAO: SMN / KSMN
- FAA: SMN
- Type: Medium airport
- Serves: Salmon, Idaho, United States
- Opened: Apr 1940
- Elevation: 4,044 ft / 1,233 m
- Coordinates: 45.1222, -113.8820
- Runways: 1
- Longest runway: 5,510 ft / 1,679 m
- Instrument procedures: 3 approaches, 2 departures
- Passengers: 373 (2020)
- Time zone: UTC-7/-6 · America/Boise
- Website: http://lemhicountyairport.com/
- Wikipedia: https://en.wikipedia.org/wiki/Lemhi_County_Airport (7 languages)
- Wikidata: https://www.wikidata.org/wiki/Q6521132
- Weather station: KSMN
- Ident: KSMN

## Timeline

- Apr 1940: Lemhi County Airport opens.

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| 17/35 | 5,510 ft / 1,679 m | 75 ft / 23 m | Asphalt | 188° / 008° | yes |

## Passengers per year

| Year | Passengers | Source |
| --- | --- | --- |
| 2018 | 441 | BTS T-100 Segment |
| 2019 | 419 | BTS T-100 Segment |
| 2020 | 373 | BTS T-100 Segment |

## Routes

1 destination in 1 country. From the airport's Wikipedia article.

### Year-round (1)

- [BOI](https://dromopedia.com/airports/kboi.md) Boise Air Terminal/Gowen Field · United States · 158 mi / 254 km · Gem Air

## Airlines

The figure is how many destinations each airline flies from SMN, as the routes above have them. Hubs from Wikidata.

### Passenger (1)

- [Gem Air](https://dromopedia.com/airlines/gem-air) · 1

## Rankings

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

| Measure | Value | World | Region | Country |
| --- | --- | --- | --- | --- |
| Passengers | 373 (2020) | #3,469 of 3,974 | #920 in North America | #674 in US |
| Longest runway | 5,510 ft / 1,679 m | =5,342 of 29,858 | =1,607 in North America | #1,268 in US |
| Elevation | 4,044 ft / 1,233 m | #3,457 of 43,403 | #1,850 in North America | #1,469 in US |
| Age | Opened 1940 | =1,114 of 15,079 | =366 in North America | =338 in US |
| Runways | 1 | =4,364 of 29,978 | =2,583 in North America | =2,326 in US |

## Radio frequencies

| Type | Description | MHz |
| --- | --- | --- |
| AWOS | AWOS 3 | 135.075 |
| CNTR | SALT LAKE CITY CNTR | 132.400 |
| RDO | BOISE RDO | 122.550 |
| UNIC | CTAF/UNICOM | 122.800 |

## Nearby airports

- [ID52](https://dromopedia.com/airports/us-1217.md) 40 Acre Airstrip · 4.6 mi / 7.4 km
- [ID50](https://dromopedia.com/airports/us-7561.md) Flying Coyote Ranch Airport · 9.6 mi / 16 km
- [ID89](https://dromopedia.com/airports/us-12721.md) Big Flat Airport · 11 mi / 17 km
- [US-6859](https://dromopedia.com/airports/us-6859.md) Twin Peaks Ranch Airport · 13 mi / 21 km
- [35ID](https://dromopedia.com/airports/35id.md) Bluebird Airport · 14 mi / 23 km
- [8ID8](https://dromopedia.com/airports/8id8.md) Lewis and Clark Airstrip · 16 mi / 26 km

## Sources

- [BTS T-100 Segment](https://www.transtats.bts.gov/Tables.asp?QO_VQ=EEE&QO_anzr=Nv4%20Pn44vr45): US traffic: Bureau of Transportation Statistics, T-100 Segment (Public Domain (US Government))
- [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)
- [Wikidata](https://www.wikidata.org): Structured data from Wikidata (CC0 1.0)
- [Wikipedia: “Lemhi County Airport”](https://en.wikipedia.org/w/index.php?title=Lemhi_County_Airport&oldid=1363053350), revision of 7 Jul 2026 (CC BY-SA 4.0)
- [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/ksmn/data