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CLS to HLN: distance & flight time
Chehalis (Chehalis Centralia Airport) → Helena (Helena Regional Airport)
521 mi
839 km · 453 nm
1h 36m
estimated nonstop flight time
+1h
time difference · heading east
See live CLS→HLN fares Phone-only fares on this route — call free
Flight time details
521 miles nonstop takes roughly 1h 36m gate to gate, flying east. 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
- HLN — Helena Regional Airport · Helena, 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 HLN
- BTM · Bert Mooney Airport51 mi away
- GTF · Great Falls International Airport67 mi away
- BZN · Gallatin Field70 mi away
- LVM · Mission Field97 mi away
Frequently asked questions
How far is CLS from HLN?
The flight distance from Chehalis (CLS) to Helena (HLN) is 521 miles (839 km, 453 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CLS to HLN?
A nonstop flight takes about 1h 36m 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 HLN?
Nonstop service on CLS–HLN 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 36m nonstop estimate.
What is the time difference between Chehalis and Helena?
Helena is 1 hour ahead of Chehalis.
What is the cheapest way to fly from CLS to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CLS–HLN that never appear on search engines, with no booking fees.
Why are some CLS to HLN fares phone-only?
Consolidator contracts let us sell certain CLS–HLN 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.