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KLS to HLN: distance & flight time
Kelso (Southwest Washington Regional Airport) → Helena (Helena Regional Airport)
521 mi
839 km · 453 nm
1h 36m
estimated nonstop flight time
+1h
time difference · heading east
See live KLS→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
- KLS — Southwest Washington Regional Airport · Kelso, 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 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 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 KLS from HLN?
The flight distance from Kelso (KLS) 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 KLS 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.
What is the time difference between Kelso and Helena?
Helena is 1 hour ahead of Kelso.
What is the cheapest way to fly from KLS to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–HLN that never appear on search engines, with no booking fees.