$172 Cheap Flights from Seoul (ICN) to Samui Intl. Airport (USM)

View $172 flight on Mon, May 11, 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Samui Intl. Airport (USM)

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Cheap Flights from Seoul to Samui Intl. Airport (ICN-USM)

Prices were available within the past 7 days and start at $172 for one-way flights and $417 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Mon, Apr 20 - Fri, Apr 24
ICN
Seoul
USM
Koh Samui
$417 Roundtrip, found 4 days ago
$417
Roundtrip
found 4 days ago
Select Singapore Airlines flight, departing Mon, Apr 20 from Seoul to Koh Samui, returning Fri, Apr 24, priced at $417 found 4 days ago
Singapore Airlines
Fri, Mar 27 - Tue, Mar 31
ICN
Seoul
USM
Koh Samui
$438 Roundtrip, found 2 hours ago
$438
Roundtrip
found 2 hours ago
Select Singapore Airlines flight, departing Fri, Mar 27 from Seoul to Koh Samui, returning Tue, Mar 31, priced at $438 found 2 hours ago
Scoot
Tue, Sep 8 - Wed, Sep 23
ICN
Seoul
USM
Koh Samui
$443 Roundtrip, found 17 hours ago
$443
Roundtrip
found 17 hours ago
Select Scoot flight, departing Tue, Sep 8 from Seoul to Koh Samui, returning Wed, Sep 23, priced at $443 found 17 hours ago
Singapore Airlines
Mon, Apr 20 - Fri, Apr 24
ICN
Seoul
USM
Koh Samui
$448 Roundtrip, found 4 days ago
$448
Roundtrip
found 4 days ago
Select Singapore Airlines flight, departing Mon, Apr 20 from Seoul to Koh Samui, returning Fri, Apr 24, priced at $448 found 4 days ago
Scoot
Tue, Sep 8 - Wed, Sep 23
ICN
Seoul
USM
Koh Samui
$472 Roundtrip, found 17 hours ago
$472
Roundtrip
found 17 hours ago
Select Scoot flight, departing Tue, Sep 8 from Seoul to Koh Samui, returning Wed, Sep 23, priced at $472 found 17 hours ago
Singapore Airlines
Fri, Mar 27 - Tue, Mar 31
ICN
Seoul
USM
Koh Samui
$472 Roundtrip, found 2 hours ago
$472
Roundtrip
found 2 hours ago
Select Singapore Airlines flight, departing Fri, Mar 27 from Seoul to Koh Samui, returning Tue, Mar 31, priced at $472 found 2 hours ago
Scoot
Thu, Mar 12 - Tue, Mar 17
ICN
Seoul
USM
Koh Samui
$476 Roundtrip, found 3 days ago
$476
Roundtrip
found 3 days ago
Select Scoot flight, departing Thu, Mar 12 from Seoul to Koh Samui, returning Tue, Mar 17, priced at $476 found 3 days ago
EVA Airways
Mon, Apr 20 - Fri, Apr 24
ICN
Seoul
USM
Koh Samui
$659 Roundtrip, found 4 days ago
$659
Roundtrip
found 4 days ago
Select EVA Airways flight, departing Mon, Apr 20 from Seoul to Koh Samui, returning Fri, Apr 24, priced at $659 found 4 days ago
Cathay Pacific
Wed, Nov 19 - Wed, Nov 26
ICN
Seoul
USM
Koh Samui
$809 Roundtrip, found 1 day ago
$809
Roundtrip
found 1 day ago
Select Cathay Pacific flight, departing Wed, Nov 19 from Seoul to Koh Samui, returning Wed, Nov 26, priced at $809 found 1 day ago
Thai Airways International
Fri, Mar 27 - Tue, Mar 31
ICN
Seoul
USM
Koh Samui
$842 Roundtrip, found 2 hours ago
$842
Roundtrip
found 2 hours ago
Select Thai Airways International flight, departing Fri, Mar 27 from Seoul to Koh Samui, returning Tue, Mar 31, priced at $842 found 2 hours ago

Frequently asked questions

How much does a flight from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM) cost?
Secure a cheap one-way flight from $172 or cheap return flight from $417 from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM)?
April is the most affordable month to fly from ICN to USM. Traveling outside of peak seasons is often the key to better flight prices.
What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ICN to USM flight.
How many flights per day from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM)?
Direct flights from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ICN to USM?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM)?
Book a flight from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM) last-minute?
Waiting until just before your departure to book a flight from ICN to USM often results in higher prices. While it's possible to find some last-minute deals, there's no guarantee. Be flexible with your travel plans for the best chance of scoring a bargain.
Is it cheaper to book an ICN to USM flight and hotel package?
Booking an ICN to USM flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Ko Samui Airport (USM)?
You can usually cancel or reschedule your ICN to USM flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Incheon Intl.
Destination airport
Samui Intl. Airport
Airlines serving
Cathay Pacific, EVA Airways, Scoot, Singapore Airlines, Thai Airways International
Roundtrip price
$417
Distance
2532 mi

Book with confidence

Seoul to Samui Intl. Airport Flights

The cheapest times to fly from Seoul to Samui Intl. Airport

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seoul to Samui Intl. Airport are during the month of April. You can find some of the cheapest flights from Seoul to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seoul to Samui Intl. Airport

Sunday is one of the best days to book for cheap flights from Seoul to Samui Intl. Airport: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seoul to Samui Intl. Airport

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seoul to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $172 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seoul to Samui Intl. Airport flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seoul to Samui Intl. Airport airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seoul to Samui Intl. Airport Flights
*Available to One Key members.