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MSO to KLS: distance & flight time
Missoula (Missoula International Airport) → Kelso (Southwest Washington Regional Airport)
422 mi
679 km · 367 nm
1h 23m
estimated nonstop flight time
-1h
time difference · heading west
See live MSO→KLS fares Phone-only fares on this route — call free
Flight time details
422 miles nonstop takes roughly 1h 23m 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
- MSO — Missoula International Airport · Missoula, 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 MSO
- FCA · Glacier Park International Airport97 mi away
- BTM · Bert Mooney Airport101 mi away
- HLN · Helena Regional Airport102 mi away
- SMN · Lemhi County 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 MSO from KLS?
The flight distance from Missoula (MSO) to Kelso (KLS) is 422 miles (679 km, 367 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from MSO to KLS?
A nonstop flight takes about 1h 23m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from MSO to KLS?
Nonstop service on MSO–KLS depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 23m nonstop estimate.
What is the time difference between Missoula and Kelso?
Kelso is 1 hour behind Missoula.
What is the cheapest way to fly from MSO to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on MSO–KLS that never appear on search engines, with no booking fees.
Why are some MSO to KLS fares phone-only?
Consolidator contracts let us sell certain MSO–KLS tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.