What is the cheapest month to fly from Koh Samui to Seoul?

Based on current 6-month forward fare data, October 2026 is the cheapest month to fly from Koh Samui (USM) to Seoul (ICN), with fares starting from $278.

What is the lowest current fare from USM to ICN?

The lowest currently-listed fare from Koh Samui (USM) to Seoul (ICN) is $278 on 2026-10-25.

Is there a direct flight from Koh Samui to Seoul?

There is currently no non-stop service from USM to ICN. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Koh Samui to Seoul

Cheapest current fares: $278 in October 2026 on connecting flights.

Last updated August 10, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Koh Samui (USM) to Seoul (ICN). Refreshed daily.

Koh Samui (USM) → Seoul (ICN)

October 2026 $278
August 2026 $346

Frequently asked questions

What is the cheapest month to fly from Koh Samui to Seoul?

Based on current 6-month forward fare data, October 2026 is the cheapest month to fly from Koh Samui (USM) to Seoul (ICN), with fares starting from $278.
What is the lowest current fare from USM to ICN?

The lowest currently-listed fare from Koh Samui (USM) to Seoul (ICN) is $278 on 2026-10-25.
Is there a direct flight from Koh Samui to Seoul?

There is currently no non-stop service from USM to ICN. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.