Cheap Flights to Koh Samui Islands

View ₩214,000 flight on Wed, Jan 7, 2026Opens in a new window

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How much is the cheapest flight to Koh Samui Islands?

Prices were available within the past 7 days and start at ₩214,000 for one-way flights and ₩427,700 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Wed, Mar 18 - Tue, Mar 24
BKK
Bangkok
USM
Koh Samui
₩427,700 Roundtrip, found 3 days ago
₩427,700
Roundtrip
found 3 days ago
Select Bangkok Airways flight, departing Wed, Mar 18 from Bangkok to Koh Samui, returning Tue, Mar 24, priced at ₩427,700 found 3 days ago
Scoot
Sun, Oct 18 - Sat, Oct 24
ICN
Seoul
USM
Koh Samui
₩496,917 Roundtrip, found 3 days ago
₩496,917
Roundtrip
found 3 days ago
Select Scoot flight, departing Sun, Oct 18 from Seoul to Koh Samui, returning Sat, Oct 24, priced at ₩496,917 found 3 days ago
Singapore Airlines
Mon, May 11 - Tue, May 19
ICN
Seoul
USM
Koh Samui
₩598,100 Roundtrip, found 2 days ago
₩598,100
Roundtrip
found 2 days ago
Select Singapore Airlines flight, departing Mon, May 11 from Seoul to Koh Samui, returning Tue, May 19, priced at ₩598,100 found 2 days ago
Vietnam Airlines
Sun, May 31 - Wed, Jun 10
PUS
Busan
USM
Koh Samui
₩814,200 Roundtrip, found 3 days ago
₩814,200
Roundtrip
found 3 days ago
Select Vietnam Airlines flight, departing Sun, May 31 from Busan to Koh Samui, returning Wed, Jun 10, priced at ₩814,200 found 3 days ago
EVA Airways
Sun, Sep 13 - Mon, Sep 21
PUS
Busan
USM
Koh Samui
₩892,100 Roundtrip, just found
₩892,100
Roundtrip
just found
Select EVA Airways flight, departing Sun, Sep 13 from Busan to Koh Samui, returning Mon, Sep 21, priced at ₩892,100 just found

Frequently asked questions

How do I find cheap flights to Koh Samui Islands that have flexible change policies?
By using our clever "No change fee" filter, that's how. Simply type in your preferred dates and destination, click the "Search" button, then tick the box directly under the "Flexible change policies" subheading (look to the left of your screen). Expedia makes it easy to find flexible and affordable airfares to Koh Samui Islands.
How can I find cheap tickets to Koh Samui Islands?
To pick up an awesome deal to Koh Samui Islands, book well ahead. Also use Expedia's "flexible dates" link above your search results. This will list prices for the days around your travel dates. In the last seven days, ₩427,700 was the lowest price for a flight to Koh Samui Islands.
How much is a flight to Koh Samui Islands?
There were lots of low-cost fares up for grabs in the last seven days, with the cost of a return flight to Koh Samui Islands varying between ₩427,700 and ₩892,100. Many lucky travelers locked in one-way flights from Bangkok (BKK) for as low as ₩214,000.
When is the cheapest time to fly to Koh Samui Islands?
Flying on a Tuesday, followed by a Monday, is usually the best way to bag the cheapest fare. Stay away from the weekends if possible, because Saturday is typically the most expensive day of the week. Spend the money you saved enjoying yourself in Koh Samui Islands instead!
How much is a plane ticket to Koh Samui Islands?
In the last seven days, fares cost between ₩427,700 and ₩892,100. Browse through our sensational deals to Koh Samui Islands, pick your favorite and then get packing!
What months are the cheapest to book a flight to Koh Samui Islands?
To secure a low-cost flight to Koh Samui Islands, book sometime in February when the price of airfares are at their cheapest. The most expensive time to book? In the USA, it's the month of December.

Book with confidence

Searching for cheap flights to Koh Samui Islands? No travel company presents more choices than Expedia if you're looking to compare flights to Koh Samui Islands. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Surat Thani Province. Expedia provides the cheapest flights to many destinations in Surat Thani Province and you may find even greater savings if you combine your flight with a hotel stay in Koh Samui Islands.

Travel information

Destination airport
Samui Intl. Airport
Destination airport IATA code
USM
Destination city name
Samui Intl. Airport
Roundtrip price
₩427,700

Trending flights to Koh Samui Islands

Prices were available within the past 7 days and start at ₩214,000 for one-way flights and ₩427,700 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scoot
Sun, Oct 18 - Sat, Oct 24
ICN
Seoul
USM
Koh Samui
₩496,917 Roundtrip, found 3 days ago
₩496,917
Roundtrip
found 3 days ago
Select Scoot flight, departing Sun, Oct 18 from Seoul to Koh Samui, returning Sat, Oct 24, priced at ₩496,917 found 3 days ago
*Available to Expedia members.