Need help booking?
Unpublished phone-only deals available
KLS to GMP: distance & flight time
Kelso (Southwest Washington Regional Airport) → Seoul (Gimpo International Airport)
5,224 mi
8,407 km · 4,539 nm
10h 43m
estimated nonstop flight time
+16h
time difference · heading northwest
See live KLS→GMP fares Phone-only fares on this route — call free
Flight time details
5,224 miles nonstop takes roughly 10h 43m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- GMP — Gimpo 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 GMP
- ICN · Incheon International Airport20 mi away
- SSN · Seoul Air Base (K-16)19 mi away
- SWU · Suwon Airport25 mi away
- OSN · Osan Air Base35 mi away
Frequently asked questions
How far is KLS from GMP?
The flight distance from Kelso (KLS) to Seoul (GMP) is 5,224 miles (8,407 km, 4,539 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to GMP?
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 Kelso and Seoul?
Seoul is 16 hours ahead of Kelso.
What is the cheapest way to fly from KLS to GMP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–GMP that never appear on search engines, with no booking fees.