Lemhi County Airport (SMN / KSMN) is a medium-sized airport serving Salmon, Idaho. It sits 4,043 feet above sea level and has 1 runway, the longest 5,510 feet. The nearest other airport with scheduled service is BTM (Bert Mooney Airport), 88 miles north-east.
Within 200 miles, straight-line. A slightly farther airport is sometimes the shorter drive — check both before you book.
Airport, runway and elevation figures come from the OurAirports open database. Routes are calculated to the airport's map reference point, which at a large airport may sit a few minutes from your specific terminal.
Leave home drive time + 2 hours before a domestic departure from SMN, or drive time + 3 hours before an international one.
Those buffers cover bag drop, security and the walk to the gate, but not getting from your car to the terminal — at a medium-sized airport like SMN, allow another 15–30 minutes to park and ride in, or 30–45 if you are returning a rental car. The drive estimate above is free-flow and does not model live traffic. Full guide to timing your departure →
It depends on your starting point. Enter your address in the calculator on this page and you'll get a road-distance driving estimate to Lemhi County Airport.
Lemhi County Airport uses the IATA code SMN and the ICAO code KSMN. It is classified as a medium-sized airport and sits at 4,043 feet above sea level.
Within 200 miles: BTM (88 mi), MYL (110 mi), SUN (114 mi), MSO (124 mi). Distances are straight-line, so compare the actual drive times before choosing — a closer airport is not always a shorter drive.
Work backwards from your departure time: subtract two hours for a domestic flight (three for international), then subtract your drive time to SMN. The calculator on this page does that arithmetic for you once you enter your starting address, and adds the parking and shuttle time you should allow on top.