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SMN to KLS: distance & flight time
Salmon (Lemhi County Airport) → Kelso (Southwest Washington Regional Airport)
441 mi
710 km · 383 nm
1h 26m
estimated nonstop flight time
-1h
time difference · heading west
See live SMN→KLS fares Phone-only fares on this route — call free
Flight time details
441 miles nonstop takes roughly 1h 26m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- SMN — Lemhi County Airport · Salmon, United States
- KLS — Southwest Washington Regional Airport · Kelso, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near SMN
- BTM · Bert Mooney Airport88 mi away
- MYL · McCall Municipal Airport110 mi away
- SUN · Friedman Memorial Airport114 mi away
- MSO · Missoula International Airport124 mi away
Near KLS
- PDX · Portland International Airport39 mi away
- CLS · Chehalis Centralia Airport39 mi away
- HIO · Portland Hillsboro Airport40 mi away
- TTD · Portland Troutdale Airport46 mi away
Frequently asked questions
How far is SMN from KLS?
The flight distance from Salmon (SMN) to Kelso (KLS) is 441 miles (710 km, 383 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SMN to KLS?
A nonstop flight takes about 1h 26m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Salmon and Kelso?
Kelso is 1 hour behind Salmon.
What is the cheapest way to fly from SMN to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SMN–KLS that never appear on search engines, with no booking fees.