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USM to ICN: distance & flight time
Ko Samui (Samui Airport) → Seoul (Incheon International Airport)
2,534 mi
4,078 km · 2,202 nm
5h 26m
estimated nonstop flight time
+2h
time difference · heading northeast
See live USM→ICN fares Phone-only fares on this route — call free
Flight time details
2,534 miles nonstop takes roughly 5h 26m 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
- USM — Samui Airport · Ko Samui, Thailand
- 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 USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 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 USM from ICN?
The flight distance from Ko Samui (USM) to Seoul (ICN) is 2,534 miles (4,078 km, 2,202 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to ICN?
A nonstop flight takes about 5h 26m 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 Ko Samui and Seoul?
Seoul is 2 hours ahead of Ko Samui.
What is the cheapest way to fly from USM to ICN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–ICN that never appear on search engines, with no booking fees.