Cheap flights from Seoul to Koh Samui

One-way fares from $209 · SEL → USM · prices found by travellers in the last 48 hours

Compare all dates Koh Samui → Seoul
Cheapest fare
$209

Trinity Airways · Fri, Nov 27

Cheapest month
November

from $209

Direct flights
Not recently

Usually 1+ stop

Quickest trip
6h 55m

4,120 km

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Cheapest month to fly from Seoul to Koh Samui

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $209
  2. December 2026 $230
  3. January 2027 $231
  4. June 2027 $254
  5. July 2027 $256

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

Trinity Airways
Depart19:50 Fri, Nov 27ICN → USM 7h 30m · 1 stop
$209one way, per person
View deal
Scoot
Depart11:25 Sat, Nov 28ICN → USM 8h 45m · 1 stop
$232one way, per person
View deal
Shandong Airlines
Depart15:25 Wed, Nov 11ICN → USM 8h 10m · 2 stops
$260one way, per person
View deal
Vietnam Airlines
Depart23:55 Sun, Nov 15ICN → USM 8h 10m · 2 stops
$287one way, per person
View deal
China Eastern
Depart11:50 Sat, Nov 14ICN → USM 9h 10m · 3 stops
$296one way, per person
View deal
Shandong Airlines
Depart14:00 Fri, Nov 13ICN → USM 8h 15m · 2 stops
$298one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Koh Samui

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in Koh SamuiCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in Koh SamuiTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in Koh SamuiPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in Koh SamuiCompare rental cars from major brands on EconomyBookings Compare cars →

Stay connected

eSIM for ThailandMobile data from the moment you land, by Airalo Get eSIM →

About flights from Seoul to Koh Samui

Seoul (SEL) and Koh Samui (USM) are about 4,120 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 6h 55m. Over the next few months, one-way fares start from $209, and November 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Seoul to Koh Samui?

The cheapest one-way fare we've seen recently is $209 with Trinity Airways, departing Friday, November 27, 2026. Over the coming months, the lowest fare in each month ranges from $209 to $256.

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

November 2026 currently has the lowest fares, from $209 one way.

Are there direct flights from Seoul to Koh Samui?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Seoul to Koh Samui?

The quickest journey we've seen takes about 6h 55m. Seoul and Koh Samui are around 4,120 km apart.

Which airlines fly from Seoul to Koh Samui?

Recent fares on this route were with Trinity Airways, Scoot, Thai Vietjet Air, Shandong Airlines, Vietnam Airlines and China Eastern.

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