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CLS to ONO: distance & flight time
Chehalis (Chehalis Centralia Airport) → Ontario (Ontario Municipal Airport)
343 mi
552 km · 298 nm
1h 22m
estimated nonstop flight time
+1h
time difference · heading southeast
See live CLS→ONO fares Phone-only fares on this route — call free
Flight time details
343 miles nonstop takes roughly 1h 22m gate to gate, flying southeast. 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
- CLS — Chehalis Centralia Airport · Chehalis, United States
- ONO — Ontario Municipal Airport · Ontario, 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 ONO
- BOI · Boise Air Terminal/Gowen Field50 mi away
- BKE · Baker City Municipal Airport69 mi away
- MYL · McCall Municipal Airport75 mi away
- MUO · Mountain Home Air Force Base88 mi away
Frequently asked questions
How far is CLS from ONO?
The flight distance from Chehalis (CLS) to Ontario (ONO) is 343 miles (552 km, 298 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CLS to ONO?
A nonstop flight takes about 1h 22m 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 ONO?
Nonstop service on CLS–ONO 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 1h 22m nonstop estimate.
What is the time difference between Chehalis and Ontario?
Ontario is 1 hour ahead of Chehalis.
What is the cheapest way to fly from CLS to ONO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CLS–ONO that never appear on search engines, with no booking fees.
Why are some CLS to ONO fares phone-only?
Consolidator contracts let us sell certain CLS–ONO 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.