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CLS to ISN: distance & flight time
Chehalis (Chehalis Centralia Airport) → Williston (Sloulin Field International Airport)
908 mi
1,461 km · 789 nm
2h 26m
estimated nonstop flight time
+2h
time difference · heading east
See live CLS→ISN fares Phone-only fares on this route — call free
Flight time details
908 miles nonstop takes roughly 2h 26m 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
- CLS — Chehalis Centralia Airport · Chehalis, 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 CLS
- OLM · Olympia Regional Airport21 mi away
- SEA · Seattle Tacoma International Airport62 mi away
- GRF · Gray Army Air Field34 mi away
- KLS · Southwest Washington Regional Airport39 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 CLS from ISN?
The flight distance from Chehalis (CLS) to Williston (ISN) is 908 miles (1,461 km, 789 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CLS to ISN?
A nonstop flight takes about 2h 26m 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 CLS to ISN?
Nonstop service on CLS–ISN 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 2h 26m nonstop estimate.
What is the time difference between Chehalis and Williston?
Williston is 2 hours ahead of Chehalis.
What is the cheapest way to fly from CLS to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CLS–ISN that never appear on search engines, with no booking fees.
Why are some CLS to ISN fares phone-only?
Consolidator contracts let us sell certain CLS–ISN 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.