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KLS to ICN: distance & flight time
Kelso (Southwest Washington Regional Airport) → Seoul (Incheon International Airport)
5,241 mi
8,434 km · 4,554 nm
10h 45m
estimated nonstop flight time
+17h
time difference · heading northwest
See live KLS→ICN fares Phone-only fares on this route — call free
Flight time details
5,241 miles nonstop takes roughly 10h 45m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 17-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- ICN — Incheon International Airport · Seoul, South Korea
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 ICN
- GMP · Gimpo International Airport20 mi away
- SWU · Suwon Airport34 mi away
- SSN · Seoul Air Base (K-16)36 mi away
- OSN · Osan Air Base41 mi away
Frequently asked questions
How far is KLS from ICN?
The flight distance from Kelso (KLS) to Seoul (ICN) is 5,241 miles (8,434 km, 4,554 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to ICN?
A nonstop flight takes about 10h 45m 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 KLS to ICN?
Nonstop service on KLS–ICN 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 10h 45m nonstop estimate.
What is the time difference between Kelso and Seoul?
Seoul is 17 hours ahead of Kelso.
What is the cheapest way to fly from KLS to ICN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–ICN that never appear on search engines, with no booking fees.
Why are some KLS to ICN fares phone-only?
Consolidator contracts let us sell certain KLS–ICN 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.