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ISN to KLS: distance & flight time
Williston (Sloulin Field International Airport) → Kelso (Southwest Washington Regional Airport)
913 mi
1,470 km · 794 nm
2h 27m
estimated nonstop flight time
-2h
time difference · heading west
See live ISN→KLS fares Phone-only fares on this route — call free
Flight time details
913 miles nonstop takes roughly 2h 27m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- ISN — Sloulin Field International Airport · Williston, 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 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
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 ISN from KLS?
The flight distance from Williston (ISN) to Kelso (KLS) is 913 miles (1,470 km, 794 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to KLS?
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 Williston and Kelso?
Kelso is 2 hours behind Williston.
What is the cheapest way to fly from ISN to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–KLS that never appear on search engines, with no booking fees.