$140 Cheap Flights from Bangkok (BKK) to Samui Intl. Airport (USM)

View $140 flight on Thu, Sep 11, 2025Opens in a new window

Popular airlines from Suvarnabhumi Intl. Airport (BKK) to Samui Intl. Airport (USM)

Find available prices by choosing your travel dates.

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

Prices were available within the past 7 days and start at $140 for one-way flights and $282 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Sat, May 17 - Sun, May 25
DMK
Bangkok
USM
Koh Samui
$282 Roundtrip, found 20 hours ago
$282
Roundtrip
found 20 hours ago
Select Bangkok Airways flight, departing Sat, May 17 from Bangkok to Koh Samui, returning Sun, May 25, priced at $282 found 20 hours ago
Bangkok Airways
Sat, May 17 - Sun, May 25
BKK
Bangkok
USM
Koh Samui
$282 Roundtrip, found 20 hours ago
$282
Roundtrip
found 20 hours ago
Select Bangkok Airways flight, departing Sat, May 17 from Bangkok to Koh Samui, returning Sun, May 25, priced at $282 found 20 hours ago
Bangkok Airways
Tue, Sep 9 - Sat, Sep 13
BKK
Bangkok
USM
Koh Samui
$284 Roundtrip, found 4 days ago
$284
Roundtrip
found 4 days ago
Select Bangkok Airways flight, departing Tue, Sep 9 from Bangkok to Koh Samui, returning Sat, Sep 13, priced at $284 found 4 days ago
Bangkok Airways
Fri, Jun 20 - Wed, Jun 25
BKK
Bangkok
USM
Koh Samui
$290 Roundtrip, found 23 hours ago
$290
Roundtrip
found 23 hours ago
Select Bangkok Airways flight, departing Fri, Jun 20 from Bangkok to Koh Samui, returning Wed, Jun 25, priced at $290 found 23 hours ago
Bangkok Airways
Fri, Jun 20 - Fri, Jun 27
BKK
Bangkok
USM
Koh Samui
$291 Roundtrip, found 1 day ago
$291
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Fri, Jun 20 from Bangkok to Koh Samui, returning Fri, Jun 27, priced at $291 found 1 day ago
Bangkok Airways
Tue, Apr 29 - Sat, May 24
DMK
Bangkok
USM
Koh Samui
$291 Roundtrip, found 5 days ago
$291
Roundtrip
found 5 days ago
Select Bangkok Airways flight, departing Tue, Apr 29 from Bangkok to Koh Samui, returning Sat, May 24, priced at $291 found 5 days ago
Bangkok Airways
Fri, Jun 20 - Fri, Jun 27
BKK
Bangkok
USM
Koh Samui
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Fri, Jun 20 from Bangkok to Koh Samui, returning Fri, Jun 27, priced at $293 found 1 day ago
Bangkok Airways
Fri, Jun 20 - Wed, Jun 25
BKK
Bangkok
USM
Koh Samui
$294 Roundtrip, found 2 days ago
$294
Roundtrip
found 2 days ago
Select Bangkok Airways flight, departing Fri, Jun 20 from Bangkok to Koh Samui, returning Wed, Jun 25, priced at $294 found 2 days ago
Bangkok Airways
Thu, May 22 - Mon, May 26
BKK
Bangkok
USM
Koh Samui
$295 Roundtrip, found 12 hours ago
$295
Roundtrip
found 12 hours ago
Select Bangkok Airways flight, departing Thu, May 22 from Bangkok to Koh Samui, returning Mon, May 26, priced at $295 found 12 hours ago
Bangkok Airways
Sun, Jun 1 - Sun, Jun 8
BKK
Bangkok
USM
Koh Samui
$300 Roundtrip, found 3 days ago
$300
Roundtrip
found 3 days ago
Select Bangkok Airways flight, departing Sun, Jun 1 from Bangkok to Koh Samui, returning Sun, Jun 8, priced at $300 found 3 days ago
Flights from Bangkok (DMK) to Samui Intl. Airport (USM)
Origin airport
Don Mueang Intl.
Destination airport
Samui Intl. Airport
Airlines serving
Bangkok Airways
Roundtrip price
$282
Distance
304 mi

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 $140 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.

Frequently asked questions

How much does a flight from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM) cost?
Cheap return flights from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM) start from $272. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Bangkok Airways flight leaving BKK on May 18 2025 and touching down at USM. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from BKK to USM?
The cheapest flights from BKK to USM are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM)?
Take a nonstop flight with Bangkok Airways and travel straight from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM).
What is the cheapest airline that flies from BKK to USM?
Fly from BKK to USM with Bangkok Airways. This airline currently has the lowest one-way fare on this route, starting at $139. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BKK on July 16 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM)?
With, on average, 25 direct flights that operate from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM) each day, you’ll be off on your next adventure in no time.
What are the most popular departure times for flights from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM)?
More travelers fly between BKK and USM at 6 AM than at any other time. Rather go when it’s quieter? Travel outside of rush hours and it’s possible you’ll save on your fare as well.
What day of the week has the most flights from BKK to USM?
Jet off on a Tuesday if you’re after the biggest selection of flights from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM).
What is the earliest flight from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM)?
Suvarnabhumi Intl. Airport (BKK)’s first flight to Ko Samui Airport (USM) takes off at approximately 5:50AM UTC+7. With a total journey time of 1h 35m, you’ll land at around 7:25AM UTC+7.
How long does it take to fly from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM)?
The average flight duration from BKK to USM is 1 hour and 15 minutes, covering a total distance of 290 mi.
What airline has the least delays from BKK to USM?
Oman Air has the strongest track record for on-time direct flights from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM), with an on-time rating of 100%. Use the Expedia App to check your flight schedule before you take off and get notified of any changes.
What is the best time to fly from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM)?
To touch down at Ko Samui Airport (USM) on time, choose a flight that leaves from Suvarnabhumi Intl. Airport (BKK) 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 Suvarnabhumi Intl. Airport (BKK)?
If you’re flying on a direct flight from Suvarnabhumi Intl. Airport (BKK) to Koh Samui, Ko Samui Airport (USM) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM) last-minute?
Booking your ticket from BKK to USM just before your getaway is generally more expensive. However, if there’s some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a BKK to USM flight and hotel package?
Compared with arranging hotels and flights separately, booking a BKK to USM flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place will take the hassle out of travel planning. Just pick your flights and select from our wide range of stays, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Suvarnabhumi Intl. Airport (BKK) to Ko Samui Airport (USM)?
If you reserved your BKK to USM flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you’d like more information.

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*Available to One Key members.