Despite the county name, Lemhi County Airport (IATA: SMN, ICAO: KSMN) is a single-runway general aviation field serving the small town of Salmon in eastern Idaho. It is the only all-weather runway within roughly 50 miles, valued by air taxis, backcountry outfitters and pilots reaching the Frank Church Wilderness. There are no scheduled airline or commercial cargo services here. Urgent airfreight is trucked in via the airline airports at Missoula (MSO, ~150 mi) or Idaho Falls (IDA, ~160 mi), with Salt Lake City (SLC) as the nearest major cargo hub.

Frequently Asked Questions

What is the IATA code of Lemhi County Airport?▼

The IATA code of Lemhi County Airport is SMN. This three-letter code is used for unique airport identification in international air transport.

Where is Lemhi County Airport located?▼

Lemhi County Airport is located in Salmon, US.

What is the ICAO code of Lemhi County Airport?▼

The ICAO code of Lemhi County Airport is KSMN. This four-letter code is used internationally in aviation.

What is the elevation of Lemhi County Airport?▼

Lemhi County Airport is at an elevation of 1232 meters (4043 ft) above sea level.

Location & Weather

45.12223, -113.88196

1232 m ü. NN

Transit time routes from Salmon

Los Angeles → Shanghai Los Angeles → Shenzhen Los Angeles → Guangzhou Los Angeles → Hong Kong Los Angeles → Tokyo Los Angeles → Busan

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Last updated: 28 June 2026

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This airport is a record in the Global Cargo Airport Dataset.

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