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

Direct flights offer convenience and save time, but they are not always the cheapest option. Flights with layovers can often be more affordable, especially if you are willing to spend extra time in transit. Consider your budget and time constraints when making a choice.

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

Yes, being flexible with your travel dates can significantly impact flight prices. Flying on weekdays or during off-peak seasons usually results in lower fares compared to weekends or holidays. Adjusting your departure or return by a few days may reveal cheaper options.

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

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. These additional fees can add up, so factor them into your total travel budget.

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 2 days ago

444 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Aug 9, 2026.)

Today’s best flight deals from Seoul to Ko Samui

Explore current cheapest deals departing from Seoul to Ko Samui

2026-08-30 – 2026-09-23
SEL - Ko Samui
72% AI deal score
$340
$389
Round trip
2026-08-30 – 2026-09-20
SEL - Ko Samui
72% AI deal score
$344
$390
Round trip
2026-09-20 – 2026-09-23
SEL - Ko Samui
69% AI deal score
$356
$393
Round trip
2026-09-06 – 2026-09-13
SEL - Ko Samui
69% AI deal score
$343
$393
Round trip
2026-10-21 – 2026-10-27
SEL - Ko Samui
69% AI deal score
$341
$393
Round trip
2026-10-18 – 2026-10-27
SEL - Ko Samui
69% AI deal score
$328
$393
Round trip
2026-10-21 – 2026-10-29
SEL - Ko Samui
69% AI deal score
$329
$393
Round trip
2027-01-20 – 2027-01-24
SEL - Ko Samui
71% AI deal score
$404
$393
Round trip
2026-08-30 – 2026-09-22
SEL - Ko Samui
72% AI deal score
$344
$394
Round trip
2026-08-30 – 2026-09-21
SEL - Ko Samui
72% AI deal score
$344
$394
Round trip

Seoul to Ko Samui: Overview

Insights for flights from Seoul to Ko Samui

For travelers looking for 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. Planning your trip during these months can lead to significant savings.

Fares for this route typically range from $298 to $408, with a median price of $347. Right now, current fares are significantly 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 at present. New deals appear almost daily, so consistent monitoring may be beneficial.

Most itineraries for flights from Seoul to Ko Samui connect at least once. There are currently no direct flights from Seoul to Ko Samui, as 0% of recent fares were non-stop. For connecting itineraries, the typical number of stopovers is 1, which is important to consider when planning your travel time.

A typical journey from Seoul to Ko Samui, including connections, takes approximately 17h 30m. This duration accounts for the necessary stopovers, as direct flights are not available on this route. Travelers should factor in this extended travel time when making their plans.

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

How much is a round trip from Seoul to Ko Samui

Regular price: $302 - $609

Prices are currently within the regular range.

The regular price range for flights from Seoul to Ko Samui is typically between $302 and $609. The current lowest deal is $350 with Scoot, for travel from Oct 26-Oct 28.

now $350

Low $302

High $609

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

Last-minute flights going from Seoul to Ko Samui

Mon, Aug 3

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$406

$434

One-way

Mon, Aug 3

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$481

$448

One-way

Mon, Aug 3

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$482

$452

One-way

Sun, Aug 9

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$448

$400

One-way

Mon, Aug 10

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$447

$412

One-way

Mon, Aug 17

⌛ Last-Minute

ICN - Ko Samui

Seoul (ICN) - Ko Samui (USM)

Scoot

$428

$413

One-way

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

2 nights

Aug 9 - Aug 11

$448 → $400

11%

1 night

Aug 10 - Aug 11

$447 → $412

2 nights

Aug 3 - Aug 5

$481 → $448

1 night

Aug 3 - Aug 4

$482 → $452

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 $350.

📅 Best time to fly

Fly in September for the best prices

Historically, September is the cheapest month to fly, with a median price of $187.

⏱️ Flight duration

Expect a flight duration of 17h 30m

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

✈️ Airlines & availability

Connecting flights are typical for this route

This route typically involves connecting flights, with a median of 1 stopover.

🏆 Airline highlight

Scoot offers a recent deal

A recent deal from Scoot was found for $350, departing October 26 and returning October 28.

🎯 Booking tip

Deals appear frequently

Deals for flights on this route appear frequently, offering more opportunities to save.

Seoul main airports to depart from

Incheon International (ICN)

Cheapest

Incheon International Airport offers the cheapest flights from Seoul to Ko Samui.

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

💸 Flights from ~$322

Gimpo International (GMP)

Gimpo International Airport is an alternative departure option for flights to Ko Samui.

📍 ~18 km from Seoul (reachable by car or train)

💸 Flights from ~$530

Ko Samui main airports to arrive at

Samui (USM)

Cheapest

Samui Airport is a 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)

Surat Thani International is a useful alternative, being the closest mainland airport to Ko Samui.

📍 ~100 km from Ko Samui (requires a ferry crossing and bus transfer, approx. 3-4 hours total)

💸 Flights from ~$382

Business & First Class Flight Deals to Ko Samui

88% AI deal score

$1,907

$1,194

Save $713

Frequently Asked Questions About Flights to Ko Samui

To find cheaper flights, consider being flexible with your travel dates and times. Using flight comparison sites can help you compare prices from various airlines and online travel agencies. Look out for deals and promotions that airlines may offer periodically.

Booking flights in advance, often several months before your intended departure, can sometimes result in lower prices. However, last-minute deals can also appear, so it's wise to monitor prices. Prices may fluctuate, so checking regularly can be beneficial.

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

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: $302 - $609

Prices are currently within the regular range.

The regular price range for flights from Seoul to Ko Samui is typically between $302 and $609. The current lowest deal is $350 with Scoot, for travel from Oct 26-Oct 28.

now $350

Low $302

High $609

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