Lemhi County Airport

Lemhi County Airport (KSMN) is a medium airport in Salmon, ID. Pilots and dispatchers reference it by ICAO code KSMN or IATA code SMN. It sits in North America.

Lemhi County Airport is a regional commercial airport that doubles as a busy private-aviation base. Operators benefit from full instrument approaches and an FBO infrastructure scaled for regular jet traffic, often without the congestion of the nearest major hub.

The longest runway measures 5,510 ft (1,679 m), a midsize and super-midsize-class field. Representative aircraft that operate comfortably here include the Citation Longitude, Challenger 350, and Gulfstream G280. In practice this comfortable for most midsize and super-mid charter equipment.

Lemhi County Airport sits at 4,043 ft above sea level. Hot-and-high conditions can meaningfully reduce takeoff performance in summer — planners should factor density altitude into payload and fuel decisions.

Local operations run on America/Boise. Scheduled airline service is light enough that it rarely interferes with charter movements, though planners should still expect to coordinate with the handling agent for international turnarounds.

SkyAccess inventory for KSMN updates continuously as operators publish new empty legs and one-way repositioning trips. Pricing on each leg is available with a free account, and an inventory alert will email you the moment a leg appears on the route you care about.

Regional fields like KSMN are a meaningful share of US private aviation — closer to the trip's actual origin or destination than the nearest major hub, with shorter ramp-to-cabin times that are the main reason owners and brokers prefer them.

Lemhi County Airport is a public airport located four miles (6 km) south of the central business district (CBD) of Salmon, a city in Lemhi County, Idaho, USA. The airport covers 259 acres (105 ha) and has one runway.