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KLS to YSM: distance & flight time
Kelso (Southwest Washington Regional Airport) → Fort Smith (Fort Smith Airport)
1,059 mi
1,705 km · 920 nm
2h 46m
estimated nonstop flight time
+1h
time difference · heading north
See live KLS→YSM fares Phone-only fares on this route — call free
Flight time details
1,059 miles nonstop takes roughly 2h 46m gate to gate, flying north. 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
- YSM — Fort Smith Airport · Fort Smith, Canada
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 YSM
- YPY · Fort Chipewyan Airport92 mi away
- YFR · Fort Resolution Airport99 mi away
- YBE · Uranium City Airport125 mi away
- YHY · Hay River / Merlyn Carter Airport142 mi away
Frequently asked questions
How far is KLS from YSM?
The flight distance from Kelso (KLS) to Fort Smith (YSM) is 1,059 miles (1,705 km, 920 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to YSM?
A nonstop flight takes about 2h 46m 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 Fort Smith?
Fort Smith is 1 hour ahead of Kelso.
What is the cheapest way to fly from KLS to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–YSM that never appear on search engines, with no booking fees.