To Ko Samui

Cheap Flights from Seoul to Ko Samui

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Seoul

RatePunk searches hundreds of travel sites at once for deals on flights to Ko Samui

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Seoul to Ko Samui

Explore current cheapest deals departing from Seoul to Ko Samui

Round trip

Sort by: Cheapest

October 18 - October 27

Cheapest

ICN - Ko Samui

$346

$322

Round trip

November 14 - November 17

Cheapest

Best

ICN - Ko Samui

$360

$322

Round trip

October 11 - October 20

ICN - Ko Samui

$345

$339

Round trip

October 18 - October 25

ICN - Ko Samui

$348

$351

Round trip

November 7 - November 15

ICN - Ko Samui

$353

$351

Round trip

September 6 - September 22

Earliest

ICN - Ko Samui

$315

$352

Round trip

October 14 - October 25

ICN - Ko Samui

$336

$352

Round trip

October 12 - October 18

ICN - Ko Samui

$348

$352

Round trip

September 7 - September 13

ICN - Ko Samui

$346

$353

Round trip

September 7 - September 12

ICN - Ko Samui

$354

$353

Round trip

Unlock all 500+ flight deals to Ko Samui and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Seoul to Ko Samui

For travelers planning cheap flights from Seoul to Ko Samui, September stands out as the most affordable month, with a median fare of just $187. Other cost-effective options include March, where the median fare is $246, and October, with a median of $299. These months offer significantly lower prices compared to the overall typical fare for this route.

Fares for flights from Seoul to Ko Samui typically range from $331–$503, with a median of $408. Right now, current fares are below the typical level for this route. Only 8% of recent fares were classified as a good price, indicating that finding exceptional deals can be challenging. New deals appear almost daily, suggesting frequent opportunities to find competitive pricing.

When flying from Seoul to Ko Samui, most itineraries connect at least once, as 0% of recent fares were for direct flights. For connecting itineraries, the typical number of stopovers is 2. This means you should expect to make multiple stops on your journey.

A typical journey from Seoul to Ko Samui, including connections, takes approximately 17h 30m. Given that most itineraries involve at least one stopover, this duration reflects the time spent in transit and during connections. The total travel time can vary depending on the specific layovers and airlines chosen.

The distance between Seoul and Ko Samui is 4078 km, classifying this as a long-haul route. This considerable distance contributes to the longer flight times and the necessity for connecting flights, making it an extended travel experience.

How much is a round trip from Seoul to Ko Samui

Regular price: $296 - $593

Prices for flights from Seoul to Ko Samui are currently within the regular range.

The regular price range for flights from Seoul to Ko Samui is between $296 and $593. The current lowest deal is $322 with Scoot, for travel from Oct 18 to Oct 27.

now $322

Low $296

High $593

The cheapest time to fly from Seoul to Ko Samui

The cheapest month to fly from Seoul to Koh Samui is September, with a median price of $187. The most expensive month is April, with a median price of $495. Prices are generally lower from January to October.

September

Cheapest

Flights from $187

April

Most Expensive

Flights from $495

Jan

Feb

Mar

Apr

May

Jun

Jul

Sep

Oct

Direct flights from Seoul to Ko Samui

Scoot

Singapore Airlines

Last-minute flights going from Seoul to Ko Samui

Sat, Jun 20

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$475

$413

One-way

Sun, Aug 23

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$384

$410

One-way

Sun, Aug 23

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$400

$410

One-way

Tue, Sep 1

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Singapore Airlines

$320

$425

One-way

Tue, Sep 1

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Singapore Airlines

$330

$425

One-way

Tue, Sep 1

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Singapore Airlines

$331

$431

One-way

Biggest price drops on these dates for flights from Seoul to Ko Samui

3 nights

Jun 20 - Jun 23

$475 → $413

13%

3 nights

Nov 14 - Nov 17

$360 → $322

11%

9 nights

Oct 18 - Oct 27

$346 → $322

9 nights

Oct 11 - Oct 20

$345 → $339

Popular Airports to fly from Seoul to Ko Samui

Seoul - Ko Samui route insights

💸 Price insights

Recent fares are below the typical level.

Recent fares from Seoul to Ko Samui are below the typical level, with a median price of $408.

📅 Best time to fly

Fly in September for the best prices.

Historically, September offers the lowest median price at $187, compared to the route's overall median.

⏱️ Flight duration

Flights are typically 17h 30m long.

The median flight duration from Seoul to Ko Samui is 17 hours and 30 minutes, with 2 stopovers.

✈️ Airlines & availability

Scoot and Singapore Airlines offer deals.

Scoot and Singapore Airlines have historically offered deals on flights from Seoul to Ko Samui.

🏆 Airline highlight

Scoot offers deals for $322.

A recent deal from Scoot was found for $322, departing October 18 and returning October 27.

🎯 Booking tip

Deals appear frequently for this route.

Historically, deals for flights from Seoul to Ko Samui appear frequently, about 0.5 deals per day.

Seoul main airports to depart from

Incheon International (ICN)

Cheapest

Fly from Incheon International for a potentially cheaper option to Ko Samui.

📍 ~50 km from Seoul city center (reachable by car or train)

💸 Flights from ~$322

Gimpo International (GMP)

Consider Gimpo International for your journey from Seoul to Ko Samui.

📍 ~20 km from Seoul city center (reachable by car or train)

💸 Flights from ~$530

Ko Samui main airports to arrive at

Samui (USM)

Cheapest

Samui Airport is the most convenient arrival airport for your trip to Ko Samui.

📍 ~6 km from Ko Samui (reachable by car)

💸 Flights from ~$322

Airports nearby Ko Samui used as alternative

Surat Thani International (URT)

Consider this airport for its well-established ferry and bus transfer infrastructure to Ko Samui.

📍 ~135 km from Ko Samui (requires a ferry crossing and bus transfer)

💸 Flights from ~$382

Krabi (KBV)

Cheapest

This major regional hub offers more international connections and good availability of low-cost carriers.

📍 ~160 km from Ko Samui (requires a ferry crossing and land transfer)

💸 Flights from ~$242

Phuket International (HKT)

Phuket International provides the largest international flight network in Southern Thailand for alternatives.

📍 ~200 km from Ko Samui (requires ferry and land transport)

💸 Flights from ~$314

Nakhon Si Thammarat (NST)

A viable mainland alternative for domestic Thai flights, often serving as a backup to Surat Thani.

📍 ~100 km from Ko Samui (requires ferry and land transport)

💸 Flights from ~$357

Chumphon (CJM)

An alternative for travelers heading towards Northern or Central Thailand mainland regions.

📍 ~165 km from Ko Samui (requires ferry and land transport)

💸 Flights from ~$431

Business & First Class Flight Deals to Ko Samui

68% AI deal score

$2,022

From ICN

Elite

Jul 29

Ko Samui, Thailand

68% AI deal score

$2,127

From ICN

Elite

Jul 02

Ko Samui, Thailand

68% AI deal score

$2,311

Frequently Asked Questions About Flights to Ko Samui

To find cheaper flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking platforms can also help you discover better deals. Looking into flights with layovers may sometimes offer lower fares.

Booking flights in advance, often several months before your intended departure, can sometimes result in lower prices. However, prices can fluctuate, so monitoring fares over time may help you identify a good booking window. Weekday bookings might also offer different pricing.

Comparing nearby airports can sometimes uncover more affordable flight options or different schedules. While it may add to your ground travel, the potential savings on airfare can be significant. Always factor in the additional time and cost of transportation to and from alternative airports.

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Cheap Flights from Seoul to Ko Samui

Today’s best flight deals from Seoul to Ko Samui

Unlock all 500+ flight deals to Ko Samui and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Seoul to Ko Samui

How much is a round trip from Seoul to Ko Samui

The cheapest time to fly from Seoul to Ko Samui

Direct flights from Seoul to Ko Samui

Last-minute flights going from Seoul to Ko Samui

Biggest price drops on these dates for flights from Seoul to Ko Samui

Popular Airports to fly from Seoul to Ko Samui

Seoul - Ko Samui route insights

Recent fares are below the typical level.

Fly in September for the best prices.

Flights are typically 17h 30m long.

Scoot and Singapore Airlines offer deals.

Scoot offers deals for $322.

Deals appear frequently for this route.

Seoul main airports to depart from

Ko Samui main airports to arrive at

Airports nearby Ko Samui used as alternative

Business & First Class Flight Deals to Ko Samui

Best Elite deals to Ko Samui

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Frequently Asked Questions About Flights to Ko Samui

How can I find cheap flights from Seoul to Ko Samui?

How can I find cheap flights from Seoul to Ko Samui?

When should I book flights from Seoul to Ko Samui?

When should I book flights from Seoul to Ko Samui?

Should I compare nearby airports for flights from Seoul to Ko Samui?

Should I compare nearby airports for flights from Seoul to Ko Samui?

Are direct flights from Seoul to Ko Samui always the best option?

Are direct flights from Seoul to Ko Samui always the best option?

Can flexible travel dates help on Seoul to Ko Samui flights?

Can flexible travel dates help on Seoul to Ko Samui flights?

What extra costs should I check before booking Seoul to Ko Samui flights?

What extra costs should I check before booking Seoul to Ko Samui flights?

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