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KLS to ISN: distance & flight time
Kelso (Southwest Washington Regional Airport) → Williston (Sloulin Field International Airport)
913 mi
1,470 km · 794 nm
2h 27m
estimated nonstop flight time
+2h
time difference · heading east
See live KLS→ISN fares Phone-only fares on this route — call free
Flight time details
913 miles nonstop takes roughly 2h 27m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- ISN — Sloulin Field International Airport · Williston, 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 ISN
- SDY · Sidney - Richland Regional Airport41 mi away
- YEN · Estevan Airport78 mi away
- OLF · L M Clayton Airport89 mi away
- GDV · Dawson Community Airport90 mi away
Frequently asked questions
How far is KLS from ISN?
The flight distance from Kelso (KLS) to Williston (ISN) is 913 miles (1,470 km, 794 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to ISN?
A nonstop flight takes about 2h 27m 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 Williston?
Williston is 2 hours ahead of Kelso.
What is the cheapest way to fly from KLS to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–ISN that never appear on search engines, with no booking fees.