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Flights from Seoul to Koh Samui

Cheapest airlines flights from Seoul to Koh Samui

Fly from Seoul to Koh Samui with 3 carriers, including Thai Airways, Thai AirAsia X, and Jeju Air. T'Way Air offers the cheapest flights from Seoul to Koh Samui.
Thai Airways logo Thai Airways Thai AirAsia X logo Thai AirAsia X Jeju Air logo Jeju Air

Find cheap flights from Seoul to Koh Samui

Find cheap Seoul to Koh Samui flights. One way flights from US$136, round trip flights from US$321 (next 3 months).

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Seoul to Koh Samui Flight Information

The distance between Seoul and Koh Samui is approximately 4,112.8 km. The most popular month to fly to Koh Samui is March. The off-season for travel is May.

Cheapest one-way flight price US$136
Cheapest round-trip ticket price US$321
Off-season for travel May
Peak season for travel March
Flight distance 4,112.8 km
Popular airline Thai Airways

When is the cheapest time to book flights from Seoul to Koh Samui?

Best time for cheap flights from Seoul to Koh Samui are between Aug 24 and Aug 31 with one way fares from US$135

Cheapest flights
From price
Search
  • 13 20
  • 20 27

  • Aug

    27 3
  • 3 10
  • 10 17
  • 17 24
  • 24 31

  • Sep

    31 7
  • 7 14
  • 14 21
  • 21 28

  • Oct

    28 5
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from Seoul (SEL) to Koh Samui (USM) the cheapest?

    Airlines adjust prices for flights from Seoul to Koh Samui based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Seoul (SEL) to Koh Samui (USM) cost?

    According to Trip.com's data, the lowest price is around $577.

How to find a cheap flight from Seoul to Koh Samui

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seoul to Koh Samui. Book your flights at the right time and save more.
1
Being flexible with your dates to get the cheapest Seoul to Koh Samui ticket.
Tap "Date" on flight search bar to scan through the calender for Seoul to Koh Samui airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Sat, Aug 30 at US$136 for one-way flights.
2
Compare cheap Seoul to Koh Samui flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Seoul to Koh Samui. The cheapest airline operating is T'Way Air.
3
Set up a Price Alert
By setting up a Price Alert for your Seoul to Koh Samui route, you can easily track the price of your airline tickets from Seoul to Koh Samui without manually checking every day.
4
Don't miss cheap Seoul to Koh Samui flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights for cheap flights. If registering a free membership, you can receive more deals for your flights.
5
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
6
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com free app and search for cheap flight tickets from Seoul to Koh Samui to get exclusive deals for you.

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