$142 Cheap Flights from Bangkok (DMK) to Samui Intl. Airport (USM)

View $142 flight on Fri, Nov 28, 2025Opens in a new window

Popular airlines from Don Mueang Intl. Airport (DMK) to Samui Intl. Airport (USM)

Cheap Flights from Bangkok to Samui Intl. Airport (DMK-USM)

Prices were available within the past 7 days and start at $142 for one-way flights and $289 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Sat, May 30 - Sun, Jun 21
DMK
Bangkok
USM
Koh Samui
$289 Roundtrip, found 2 days ago
$289
Roundtrip
found 2 days ago
Select Bangkok Airways flight, departing Sat, May 30 from Bangkok to Koh Samui, returning Sun, Jun 21, priced at $289 found 2 days ago
Bangkok Airways
Tue, May 12 - Tue, May 19
DMK
Bangkok
USM
Koh Samui
$290 Roundtrip, found 9 hours ago
$290
Roundtrip
found 9 hours ago
Select Bangkok Airways flight, departing Tue, May 12 from Bangkok to Koh Samui, returning Tue, May 19, priced at $290 found 9 hours ago
Bangkok Airways
Mon, Jan 12 - Mon, Jan 26
DMK
Bangkok
USM
Koh Samui
$291 Roundtrip, just found
$291
Roundtrip
just found
Select Bangkok Airways flight, departing Mon, Jan 12 from Bangkok to Koh Samui, returning Mon, Jan 26, priced at $291 just found
Bangkok Airways
Thu, Nov 20 - Mon, Nov 24
DMK
Bangkok
USM
Koh Samui
$299 Roundtrip, found 1 day ago
$299
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Thu, Nov 20 from Bangkok to Koh Samui, returning Mon, Nov 24, priced at $299 found 1 day ago
Bangkok Airways
Mon, Jan 26 - Tue, Jan 27
DMK
Bangkok
USM
Koh Samui
$301 Roundtrip, found 10 hours ago
$301
Roundtrip
found 10 hours ago
Select Bangkok Airways flight, departing Mon, Jan 26 from Bangkok to Koh Samui, returning Tue, Jan 27, priced at $301 found 10 hours ago
Bangkok Airways
Mon, Jan 12 - Mon, Jan 26
DMK
Bangkok
USM
Koh Samui
$302 Roundtrip, just found
$302
Roundtrip
just found
Select Bangkok Airways flight, departing Mon, Jan 12 from Bangkok to Koh Samui, returning Mon, Jan 26, priced at $302 just found
Bangkok Airways
Sun, Nov 2 - Wed, Nov 5
DMK
Bangkok
USM
Koh Samui
$306 Roundtrip, found 1 day ago
$306
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Sun, Nov 2 from Bangkok to Koh Samui, returning Wed, Nov 5, priced at $306 found 1 day ago
Bangkok Airways
Sun, Nov 9 - Sun, Nov 16
DMK
Bangkok
USM
Koh Samui
$308 Roundtrip, found 6 days ago
$308
Roundtrip
found 6 days ago
Select Bangkok Airways flight, departing Sun, Nov 9 from Bangkok to Koh Samui, returning Sun, Nov 16, priced at $308 found 6 days ago
Bangkok Airways
Sun, Nov 2 - Wed, Nov 5
DMK
Bangkok
USM
Koh Samui
$309 Roundtrip, found 1 day ago
$309
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Sun, Nov 2 from Bangkok to Koh Samui, returning Wed, Nov 5, priced at $309 found 1 day ago
Bangkok Airways
Tue, Jan 13 - Fri, Jan 23
DMK
Bangkok
USM
Koh Samui
$311 Roundtrip, found 6 days ago
$311
Roundtrip
found 6 days ago
Select Bangkok Airways flight, departing Tue, Jan 13 from Bangkok to Koh Samui, returning Fri, Jan 23, priced at $311 found 6 days ago

Find the cheapest month to fly from Bangkok (DMK) to Koh Samui (USM)

May is typically the cheapest month to fly

From $185 - $293 per traveler.

Frequently asked questions

How much does a flight from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM) cost?
Get a cheap one-way flight from $142 or cheap return flight from $289 from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM)?
The cheapest month to fly from DMK to USM is May, when there's less demand. Off-peak months are generally when airlines offer better prices between these airports.
Which airlines fly direct from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM)?
You can fly straight from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM) on a Bangkok Airways flight.
What is the cheapest airline that flies from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM)?
To find the cheapest airline that'll fly you from DMK to USM, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM)?
Each day, an average of 3 direct flights operate from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM). Choose the departure date that works for you.
What are the most popular departure times for flights from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM)?
The 8 AM departures from DMK to USM are the busiest. Greater demand means you'll likely pay more for these departures. If you're looking to save, pick a less crowded time to fly.
What day of the week has the most flights from DMK to USM?
Sunday has the most flights from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM). Consider jetting off on this day and you'll have the best chance of finding a departure that fits your plans.
What is the earliest flight from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM)?
Don Mueang Intl. Airport (DMK)'s first flight to Ko Samui Airport (USM) leaves at approximately 8:50AM UTC+7. With a travel duration of 1h 35m, you'll land at around 10:25AM UTC+7.
How long does it take to fly from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM)?
It takes roughly 1 hour and 35 minutes to fly the 300 mi from DMK to USM.
What airline has the least delays from DMK to USM?
Bangkok Airways has the strongest track record for on-time direct flights from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM), with an on-time rating of 92%. Use the Expedia App to view your flight status before you head off and receive notifications about any changes.
What is the best time to fly from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM)?
To touch down at Ko Samui Airport (USM) on time, select a flight that takes off from Don Mueang Intl. Airport (DMK) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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.
What airports do you fly into for Koh Samui from Don Mueang Intl. Airport (DMK)?
Ko Samui Airport (USM) is the only airport in Koh Samui with direct flights from Don Mueang Intl. Airport (DMK). Explore the options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM) last-minute?
Booking your flight from DMK to USM shortly before your journey is usually more expensive. But if you're flexible with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a DMK to USM flight and hotel package?
Opting for a DMK to USM flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our wide range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Don Mueang Intl. Airport (DMK) to Ko Samui Airport (USM)?
Typically, you can modify or cancel your DMK to USM flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further details, visit our Customer Service portal.

Travel information

Origin airport
Don Mueang Intl.
Destination airport
Samui Intl. Airport
Airlines serving
Bangkok Airways
Roundtrip price
$288
Distance
304 mi
Average flight time
1 hour 35 mins

Book with confidence

Bangkok to Samui Intl. Airport Flights

The cheapest times to fly from Bangkok 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 Bangkok to Samui Intl. Airport are during the month of May. You can find some of the cheapest flights from Bangkok to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Bangkok 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 Bangkok 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 Bangkok to Samui Intl. Airport in 2025. You can also book with separate airlines for your outbound and return journeys, from $142 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 Bangkok 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 Bangkok 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.

 

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