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KLS to DUC: distance & flight time
Kelso (Southwest Washington Regional Airport) → Duncan (Halliburton Field)
1,531 mi
2,464 km · 1,331 nm
3h 28m
estimated nonstop flight time
+2h
time difference · heading southeast
See live KLS→DUC fares Phone-only fares on this route — call free
Flight time details
1,531 miles nonstop takes roughly 3h 28m gate to gate, flying southeast. 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
- KLS — Southwest Washington Regional Airport · Kelso, United States
- DUC — Halliburton Field · Duncan, 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 DUC
Frequently asked questions
How far is KLS from DUC?
The flight distance from Kelso (KLS) to Duncan (DUC) is 1,531 miles (2,464 km, 1,331 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to DUC?
A nonstop flight takes about 3h 28m 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 Duncan?
Duncan is 2 hours ahead of Kelso.
What is the cheapest way to fly from KLS to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–DUC that never appear on search engines, with no booking fees.