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KOS to ICN: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Seoul (Incheon International Airport)
2,336 mi
3,760 km · 2,030 nm
5h 3m
estimated nonstop flight time
+2h
time difference · heading northeast
See live KOS→ICN fares Phone-only fares on this route — call free
Flight time details
2,336 miles nonstop takes roughly 5h 3m gate to gate, flying northeast. 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
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- 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 KOS
- PQC · Phu Quoc International Airport37 mi away
- PNH · Phnom Penh International Airport106 mi away
- VKG · Rach Gia Airport110 mi away
- KZC · Kampong Chhnang Airport132 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 KOS from ICN?
The flight distance from Sihanoukville (KOS) to Seoul (ICN) is 2,336 miles (3,760 km, 2,030 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to ICN?
A nonstop flight takes about 5h 3m 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 Sihanoukville and Seoul?
Seoul is 2 hours ahead of Sihanoukville.
What is the cheapest way to fly from KOS to ICN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–ICN that never appear on search engines, with no booking fees.