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

Direct flights offer convenience by reducing travel time and avoiding layovers. However, they are not always the most budget-friendly choice. Flights with one or more stops can sometimes be significantly cheaper, making them a good option if you prioritize savings over speed.

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

Yes, having flexible travel dates can significantly increase your chances of finding cheaper flights. Prices often vary depending on the day of the week, time of year, and demand. Adjusting your departure or return by a few days may lead to substantial savings.

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

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight services. Some airlines may also charge for printing boarding passes at the airport. Being aware of these additional fees can help you budget accurately for your trip.

Flights From Seoul

To Ko Samui

Cheap Flights from Seoul to Ko Samui

Browse current best options from Seoul. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Seoul

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

Prices updated today

462 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 15, 2026.)

Today’s best flight deals from Seoul to Ko Samui

Explore current cheapest deals departing from Seoul to Ko Samui

2027-01-13 – 2027-01-17
SEL - Ko Samui
69% AI deal score
$384
$416
Round trip
2027-01-20 – 2027-01-24
SEL - Ko Samui
69% AI deal score
$384
$416
Round trip
2026-11-11 – 2026-11-17
SEL - Ko Samui
68% AI deal score
$330
$417
Round trip
2026-10-21 – 2026-10-27
SEL - Ko Samui
68% AI deal score
$340
$418
Round trip
2026-10-14 – 2026-10-17
SEL - Ko Samui
69% AI deal score
$360
$418
Round trip
2026-10-04 – 2026-10-17
SEL - Ko Samui
68% AI deal score
$315
$418
Round trip
2026-10-18 – 2026-10-27
SEL - Ko Samui
68% AI deal score
$326
$418
Round trip
2026-10-11 – 2026-10-17
SEL - Ko Samui
69% AI deal score
$343
$418
Round trip
2027-02-03 – 2027-02-07
SEL - Ko Samui
68% AI deal score
$330
$418
Round trip
2027-02-01 – 2027-02-07
SEL - Ko Samui
68% AI deal score
$326
$418
Round trip

Seoul to Ko Samui: Overview

Insights for flights from Seoul to Ko Samui

For travelers planning cheap flights from Seoul to Ko Samui, the most affordable month to fly is typically September, with a median fare of $187. Other cost-effective options include March, where the median fare is $246, and October, with a median of $299. These months offer more budget-friendly opportunities compared to other times of the year.

Fares for flights from Seoul to Ko Samui typically range from $298–$408, with a median price of $347. Right now, current fares are above the typical level for this route. Only 9% of recent fares were classified as a good price, indicating that finding a particularly low fare can be challenging.

Most itineraries for flights from Seoul to Ko Samui are connecting flights, as 0% of recent fares were non-stop. When connecting, the typical number of stopovers is 1. This means you should expect at least one stop on your journey.

A typical journey from Seoul to Ko Samui, including connections, takes approximately 17h 30m. This duration accounts for the layovers and transfers often involved in reaching Ko Samui from Seoul, reflecting the nature of connecting itineraries on this route.

The distance between Seoul and Ko Samui is 4078 km, classifying this as a long-haul route. This considerable distance contributes to the overall journey time and the need for connecting flights.

How much is a round trip from Seoul to Ko Samui

Regular price: $281 - $621

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 $281 and $621. The current lowest deal is $368 with Scoot, for travel from Oct 18-Oct 27.

now $368

Low $281

High $621

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

Coyne Aviation

T'way Air

Last-minute flights going from Seoul to Ko Samui

Fri, Sep 18

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Vietjet Air

$472

$528

One-way

Sat, Sep 19

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$476

$464

One-way

Sun, Sep 20

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$412

$442

One-way

Sun, Sep 20

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$442

One-way

Sun, Sep 20

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$445

$453

One-way

Mon, Sep 21

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$432

$442

One-way

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

3 nights

Sep 20 - Sep 23

$445 → $433

4 nights

Sep 20 - Sep 24

$442 → $443

3 nights

Sep 21 - Sep 24

$435 → $442

4 nights

Sep 21 - Sep 25

$432 → $442

Popular Airports to fly from Seoul to Ko Samui

Seoul - Ko Samui route insights

💸 Price insights

Recent fares are above the typical level

Recent fares for Seoul to Ko Samui are above the typical level at $368.

📅 Best time to fly

September is historically cheapest at $187

Historically, September is the cheapest month to fly from Seoul to Ko Samui, at $187.

⏱️ Flight duration

Connecting flights average 17h 30m

Flights from Seoul to Ko Samui typically involve connecting flights, averaging 17h 30m.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are dominant on this route, with deals appearing frequently.

🏆 Airline highlight

Scoot offers many deals

Scoot has 54 recent deals for flights from Seoul to Ko Samui.

🎯 Booking tip

Good prices are uncommon

Historically, only 9% of recent fares from Seoul to Ko Samui were considered good prices.

Seoul main airports to depart from

Incheon International (ICN)

Cheapest

Fly from Incheon International for flights from Seoul to Ko Samui, with prices from $407.

📍 ~48 km from Seoul city center (reachable by car or train).

💸 Flights from ~$407

Gimpo International (GMP)

Gimpo International is an alternative departure airport for flights from Seoul to Ko Samui.

📍 ~17 km from Seoul city center (reachable by car or train).

💸 Flights from ~$556

Ko Samui main airports to arrive at

Samui (USM)

Cheapest

Samui Airport is ideal for direct access to Ko Samui and its surrounding attractions.

📍 ~7 km from Ko Samui (reachable by car)

💸 Flights from ~$432

Airports nearby Ko Samui used as alternative

Surat Thani International (URT)

This airport is a primary mainland gateway for Ko Samui travelers, offering significantly lower flight costs.

📍 ~135 km from Ko Samui (requires a ferry crossing and bus transfer, approx. 3-4 hours total)

💸 Flights from ~$284

Business & First Class Flight Deals to Ko Samui

Discover luxury on the budget with premium cabin class on flights from Seoul to Ko Samui.

Elite

Best Elite deals to Ko Samui

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From ICN

Elite

Dec 09

Ko Samui, Thailand

90% AI deal score

$1,887

$1,082

Save $805

Shandong Airlines, +1

Business Class

From ICN

Elite

Oct 27

Ko Samui, Thailand

89% AI deal score

$1,719

$1,009

Save $710

Arcus-Air Logistic, +1

Business Class

From ICN

Elite

Oct 27

Ko Samui, Thailand

89% AI deal score

$1,740

$1,009

Save $731

Arcus-Air Logistic, +1

Business Class

From ICN

Elite

Dec 05

Ko Samui, Thailand

89% AI deal score

$1,771

$1,013

Save $758

Arcus-Air Logistic, +1

Business Class

From ICN

Elite

Dec 07

Ko Samui, Thailand

89% AI deal score

$1,797

$1,082

Save $715

Shandong Airlines, +1

Business Class

From ICN

Elite

Dec 06

Ko Samui, Thailand

89% AI deal score

$1,785

$1,082

Save $703

Shandong Airlines, +1

Business Class

From ICN

Elite

Dec 10

Ko Samui, Thailand

89% AI deal score

$1,857

$1,085

Save $772

Shandong Airlines, +1

Business Class

From ICN

Elite

Dec 08

Ko Samui, Thailand

89% AI deal score

$1,851

$1,085

Save $766

Shandong Airlines, +1

Business Class

From ICN

Elite

Nov 12

Ko Samui, Thailand

88% AI deal score

$1,632

$1,017

Save $615

Arcus-Air Logistic, +1

Business Class

From ICN

Elite

Nov 25

Ko Samui, Thailand

88% AI deal score

$1,636

$1,017

Save $619

Arcus-Air Logistic, +1

Business Class

From ICN

Elite

Nov 12

Ko Samui, Thailand

88% AI deal score

$1,618

$1,017

Save $601

Arcus-Air Logistic, +1

Business Class

From ICN

Elite

Oct 24

Ko Samui, Thailand

88% AI deal score

$1,719

$1,082

Save $637

Shandong Airlines, +1

Business Class

Frequently Asked Questions About Flights to Ko Samui

To find cheap flights, consider being flexible with your travel dates and comparing prices across different airlines and booking sites. Setting up price alerts can also help you monitor fare changes and book when prices are lower. Looking into flights with layovers may also present more affordable options.

Booking flights in advance often provides better prices, though the ideal booking window can vary. Generally, purchasing tickets several weeks or months before your intended departure date may result in more savings. Prices can fluctuate, so monitoring them is key.

Comparing nearby airports can sometimes uncover more affordable flight options or different schedules. While not always applicable, expanding your search to include airports a short distance from your origin or destination may provide additional choices. Always factor in the cost and time of ground transportation.

Seoul to Ko Samui: Overview

Insights for flights from Seoul to Ko Samui

How much is a round trip from Seoul to Ko Samui

Regular price: $281 - $621

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 $281 and $621. The current lowest deal is $368 with Scoot, for travel from Oct 18-Oct 27.

now $368

Low $281

High $621

The cheapest time to fly from Seoul to Ko Samui

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

Coyne Aviation

T'way Air

Last-minute flights going from Seoul to Ko Samui

Fri, Sep 18

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Vietjet Air

$472

$528

One-way

Sat, Sep 19

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$476

$464

One-way

Sun, Sep 20

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$412

$442

One-way

Sun, Sep 20

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$442

One-way

Sun, Sep 20

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$445

$453

One-way

Mon, Sep 21

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$432

$442

One-way

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

3 nights

Sep 20 - Sep 23

$445 → $433

4 nights

Sep 20 - Sep 24

$442 → $443

3 nights

Sep 21 - Sep 24

$435 → $442

4 nights

Sep 21 - Sep 25

$432 → $442

Popular Airports to fly from Seoul to Ko Samui

Seoul - Ko Samui route insights

💸 Price insights

Recent fares are above the typical level

Recent fares for Seoul to Ko Samui are above the typical level at $368.

📅 Best time to fly

September is historically cheapest at $187

Historically, September is the cheapest month to fly from Seoul to Ko Samui, at $187.

⏱️ Flight duration

Connecting flights average 17h 30m

Flights from Seoul to Ko Samui typically involve connecting flights, averaging 17h 30m.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are dominant on this route, with deals appearing frequently.

🏆 Airline highlight

Scoot offers many deals

Scoot has 54 recent deals for flights from Seoul to Ko Samui.

🎯 Booking tip

Good prices are uncommon

Historically, only 9% of recent fares from Seoul to Ko Samui were considered good prices.

Seoul main airports to depart from

Incheon International (ICN)

Cheapest

Fly from Incheon International for flights from Seoul to Ko Samui, with prices from $407.

📍 ~48 km from Seoul city center (reachable by car or train).

💸 Flights from ~$407

Gimpo International (GMP)

Gimpo International is an alternative departure airport for flights from Seoul to Ko Samui.

📍 ~17 km from Seoul city center (reachable by car or train).

💸 Flights from ~$556

Ko Samui main airports to arrive at

Samui (USM)

Cheapest

Samui Airport is ideal for direct access to Ko Samui and its surrounding attractions.

📍 ~7 km from Ko Samui (reachable by car)

💸 Flights from ~$432

Airports nearby Ko Samui used as alternative

Surat Thani International (URT)

This airport is a primary mainland gateway for Ko Samui travelers, offering significantly lower flight costs.

Ko Samui, Thailand

88% AI deal score

$1,719

$1,082

Save $637

Shandong Airlines, +1

Business Class

Frequently Asked Questions About Flights to Ko Samui

Cheap Flights from Seoul to Ko Samui

Today’s best flight deals from Seoul to Ko Samui

Seoul to Ko Samui: Overview

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 above the typical level

September is historically cheapest at $187

Connecting flights average 17h 30m

Connecting flights are dominant

Scoot offers many deals

Good prices are uncommon

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

Dec 09

Oct 27

Oct 27

Dec 05

Dec 07

Dec 06

Dec 10

Dec 08

Nov 12

Nov 25

Nov 12

Oct 24

Frequently Asked Questions About Flights to Ko Samui

How can I find cheap 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?

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

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

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

Related routes

More routes from Seoul

Flights to Ko Samui from other cities

Seoul to Ko Samui: Overview

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 above the typical level

September is historically cheapest at $187

Connecting flights average 17h 30m

Connecting flights are dominant

Scoot offers many deals

Good prices are uncommon

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

Dec 09

Oct 27

Oct 27

Dec 05

Dec 07

Dec 06

Dec 10

Dec 08

Nov 12

Nov 25

Nov 12

Oct 24

Frequently Asked Questions About Flights to Ko Samui

How can I find cheap 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?