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KLS to MSO: distance & flight time
Kelso (Southwest Washington Regional Airport) → Missoula (Missoula International Airport)
422 mi
679 km · 367 nm
1h 23m
estimated nonstop flight time
+1h
time difference · heading east
See live KLS→MSO fares Phone-only fares on this route — call free
Flight time details
422 miles nonstop takes roughly 1h 23m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- MSO — Missoula International Airport · Missoula, 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 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
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
Frequently asked questions
How far is KLS from MSO?
The flight distance from Kelso (KLS) to Missoula (MSO) is 422 miles (679 km, 367 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to MSO?
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.
What is the time difference between Kelso and Missoula?
Missoula is 1 hour ahead of Kelso.
What is the cheapest way to fly from KLS to MSO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–MSO that never appear on search engines, with no booking fees.