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USN to KLS: distance & flight time
Ulsan (Ulsan Airport) → Kelso (Southwest Washington Regional Airport)
5,228 mi
8,413 km · 4,543 nm
10h 43m
estimated nonstop flight time
-16h
time difference · heading northeast
See live USN→KLS fares Phone-only fares on this route — call free
Flight time details
5,228 miles nonstop takes roughly 10h 43m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.
The two airports
- USN — Ulsan Airport · Ulsan, South Korea
- KLS — Southwest Washington Regional Airport · Kelso, 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 USN
- KPO · Pohang Airport (G-815/K-3)28 mi away
- PUS · Gimhae International Airport37 mi away
- TAE · Daegu Airport44 mi away
- CHF · Jinhae Airbase/Airport (G-813/K-10)48 mi away
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
Frequently asked questions
How far is USN from KLS?
The flight distance from Ulsan (USN) to Kelso (KLS) is 5,228 miles (8,413 km, 4,543 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USN to KLS?
A nonstop flight takes about 10h 43m 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 Ulsan and Kelso?
Kelso is 16 hours behind Ulsan.
What is the cheapest way to fly from USN to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USN–KLS that never appear on search engines, with no booking fees.