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Cheap flights from Seoul to Koh Samui

One-way from $223, found by travellers in the last 7 days. The live price is checked when you book.

Departure
Return
Prices for nearby dates
Sat, Jul 31Any priceSun, Aug 1$286Mon, Aug 2Any priceTue, Aug 3$223Wed, Aug 4Any priceThu, Aug 5Any priceFri, Aug 6Any priceSat, Aug 7Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Booking opens on Aviasales, which shows baggage, fare rules and the live price.

Cheapest
$223
Thai Vietjet Air, flight VZ 851Found 6 days ago, 1 adult
Check live price
10:10amSeoulTue, Aug 3
Travel time 6h 55m, 1 stopICNUSM
3:05pmKoh SamuiTue, Aug 3
$224
Thai Vietjet Air, flight VZ 851Found 6 days ago, 1 adult
Check live price
10:10amSeoulFri, Jul 23
Travel time 6h 55m, 1 stopICNUSM
3:05pmKoh SamuiFri, Jul 23
$228
Scoot, flight TR 843Found 3 days ago, 1 adult
Check live price
11:25amSeoulWed, Jan 13
Travel time 8h 50m, 1 stopICNUSM
6:15pmKoh SamuiWed, Jan 13
$229
Scoot, flight TR 843Found 3 days ago, 1 adult
Check live price
11:25amSeoulMon, Dec 14
Travel time 8h 40m, 1 stopICNUSM
6:05pmKoh SamuiMon, Dec 14
$231
Scoot, flight TR 843Found 5 days ago, 1 adult
Check live price
11:25amSeoulMon, Nov 30
Travel time 8h 40m, 1 stopICNUSM
6:05pmKoh SamuiMon, Nov 30

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in ThailandTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Koh Samui, booked ahead at a fixed price.
    See options
  • Things to do in Koh SamuiPopular tours from $30.07 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for Thailand from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Delayed or cancelled? See which passenger rights cover this route.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu12345678910111213141516171819202122232425–26–27$28128–29$28130$26931$277

November 2026

MoTuWeThFrSaSu1$2752$2763$2704–5$2766–7$2328–9–10–11–12–13$27414$26715$26116$27617–18–19–20–21–22–23–24–25–26–27–28–29–30$231

December 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9–10–11–12$27713$33414$22915$33916$27717$33618$40019$35220–21–22–23–2425262728293031
$232 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Dec 14, $229.

Lowest fares by month

In the fares found this week, August 2027 has the lowest: from $223 one-way, against $269 in October. Pick a month to see its cheapest date.

  1. Oct$269
  2. Nov$231
  3. Dec$229
  4. Jan$228
  5. Febno fares yet
  6. Marno fares yet
  7. Aprno fares yet
  8. Mayno fares yet
  9. Junno fares yet
  10. Jul$224
  11. Aug$223
  12. Sepno fares yet
$0$100$200$300OctNovDecJanFebMarAprMayJunJul$223AugSep
Show as a table
MonthCheapest one-wayDateStops
October$269Fri, Oct 302 stops
November$231Mon, Nov 301 stop
December$229Mon, Dec 141 stop
January 2027$228Wed, Jan 131 stop
February 2027—
March 2027—
April 2027—
May 2027—
June 2027—
July 2027$224Fri, Jul 231 stop
August 2027$223Tue, Aug 31 stop
September 2027—

Fares and weather by month

The lowest one-way fare found for each month, next to the weather in Koh Samui. Average daily high and low and monthly precipitation, 1991–2020 normals.

Oct2026NovDecJan2027FebMarAprMayJunJulAugSep
Lowest fare$269$231$229$228–––––$224$223–
High °C31°30°29°29°29°30°32°33°33°32°32°32°
Low °C24°24°24°24°25°25°26°26°25°25°25°25°
Precipitation mm2954452631276411683132134117102118

Source: Ko Samui on Wikipedia, CC BY-SA 4.0.

Questions travellers ask

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

In the fares found this week, August 2027 has the lowest: from $223 one-way, against $269 in October.

What is the weather in Koh Samui in August 2027?

In August 2027, the cheapest month to fly, the average daily high in Koh Samui is 32 °C and the low 25 °C.

Are there direct flights from Seoul to Koh Samui?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

Which day of the week is cheapest to fly?

In the fares we have, Monday departures are the cheapest, with a typical lowest fare of $254. Sunday is the priciest at about $286.

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