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Cheap flights from Bangkok to Ko Samui from ฿3,563

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — USM
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Bangkok to Ko Samui are usually found in October or November, booked 88 days in advance, depart on a Thursday or Sunday and return on a Monday

Cheap flight deals from Bangkok to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from Bangkok to Ko Samui
Explore the most affordable flight options available from Bangkok to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2026.

Thu 10/919:55
DMK
-
USM
1 stop12h 30m
Multiple Airlines
Sun 13/919:00
USM
-
DMK
1 stop14h 05m
Multiple Airlines
Deal found 16/7฿6,622
Thu 27/805:30
BKK
-
USM
Nonstop1h 30m
Bangkok Airways
Sun 30/808:20
USM
-
BKK
Nonstop1h 15m
Bangkok Airways
Deal found 16/7฿6,655
Wed 23/909:05
DMK
-
USM
Nonstop1h 30m
Bangkok Airways
Wed 30/906:55
USM
-
DMK
Nonstop1h 30m
Bangkok Airways
Deal found 17/7฿6,655
Thu 10/906:05
BKK
-
USM
Nonstop1h 05m
Multiple Airlines
Sun 13/917:00
USM
-
BKK
1 stop5h 05m
Multiple Airlines
Deal found 16/7฿6,689
Wed 9/913:05
DMK
-
USM
1 stop4h 55m
Multiple Airlines
Sat 19/906:55
USM
-
DMK
Nonstop1h 30m
Multiple Airlines
Deal found 17/7฿6,689
Thu 10/906:05
BKK
-
USM
Nonstop1h 05m
Multiple Airlines
Mon 14/912:30
USM
-
BKK
1 stop5h 25m
Multiple Airlines
Deal found 17/7฿6,722
Mon 7/906:30
DMK
-
USM
1 stop4h 00m
Multiple Airlines
Sun 13/919:00
USM
-
DMK
1 stop14h 05m
Multiple Airlines
Deal found 17/7฿6,722
Thu 3/1219:45
BKK
-
USM
Nonstop1h 35m
Bangkok Airways
Wed 9/1207:00
USM
-
BKK
Nonstop1h 15m
Bangkok Airways
Deal found 17/7฿6,756
Sat 5/909:35
DMK
-
USM
1 stop4h 20m
Multiple Airlines
Thu 17/912:10
USM
-
DMK
1 stop4h 40m
Multiple Airlines
Deal found 17/7฿6,756
Mon 7/906:05
BKK
-
USM
Nonstop1h 05m
Multiple Airlines
Thu 10/917:00
USM
-
BKK
1 stop5h 05m
Multiple Airlines
Deal found 17/7฿6,790
Sun 6/913:05
DMK
-
USM
1 stop4h 55m
Multiple Airlines
Mon 14/917:55
USM
-
DMK
1 stop5h 40m
Multiple Airlines
Deal found 16/7฿6,790
Tue 15/914:35
BKK
-
USM
1 stop4h 40m
Multiple Airlines
Sat 19/907:50
USM
-
BKK
Nonstop1h 15m
Multiple Airlines
Deal found 17/7฿6,823

Find flight deals from Bangkok to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Bangkok (TH1) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 July 2026.

Round-trip from

฿6,622

One-way from

฿3,563

Popular in

July

Cheapest in

October

Average price

฿10,050
10/9-13/9
  • 10/9-13/9
  • 2 total stops
  • 26h 35m total
  • Bangkok to Ko Samui
Search Deals
Bangkok Airways
  • Bangkok Airways
  • 12/12
  • Nonstop
  • 1h 10m total
  • Bangkok to Ko Samui
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (฿19,289 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿4,374 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Bangkok to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 17,341 searches. Data last updated 18 July 2026.
Use the filters below to find and compare flights from Bangkok to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokKo Samui

DMK - USM

DMKUSM

Bangkok Don Mueang Intl

Tue 22/9

13:25-14:55

Nonstop1h 30m

Ko Samui

Fri 23/10

15:55-17:25

Nonstop1h 30m

฿6,958

BangkokKo Samui

DMK - USM

DMKUSM

Bangkok Don Mueang Intl

Sun 6/9

09:05-10:35

Nonstop1h 30m

Ko Samui

Wed 16/9

06:55-08:25

Nonstop1h 30m

฿7,327
Fastest return journey

BangkokKo Samui

BKK - USM

BKKUSM

Bangkok Suvarnabhumi

Wed 16/9

06:05-07:10

Nonstop1h 05m

Ko Samui

Sun 27/9

06:00-07:15

Nonstop1h 15m

฿7,395

BangkokKo Samui

DMK - USM

DMKUSM

Bangkok Don Mueang Intl

Sat 26/9

18:15-19:45

Nonstop1h 30m

Ko Samui

Wed 30/9

06:55-08:25

Nonstop1h 30m

฿7,899

BangkokKo Samui

BKK - USM

BKKUSM

Bangkok Suvarnabhumi

Fri 31/7

06:20-07:50

Nonstop1h 30m

Ko Samui

Sat 8/8

07:50-09:05

Nonstop1h 15m

฿7,966

BangkokKo Samui

DMK - USM

DMKUSM

Bangkok Don Mueang Intl

Thu 22/10

18:15-19:45

Nonstop1h 30m

Ko Samui

Fri 30/10

06:45-08:20

Nonstop1h 35m

฿8,336

BangkokKo Samui

DMK - USM

DMKUSM

Bangkok Don Mueang Intl

Thu 3/9

18:15-19:45

Nonstop1h 30m

Ko Samui

Sun 6/9

12:30-20:10

1 stop7h 40m

฿8,369

BangkokKo Samui

DMK - USM

DMKUSM

Bangkok Don Mueang Intl

Sun 20/9

18:15-19:45

Nonstop1h 30m

Ko Samui

Tue 29/9

06:55-08:25

Nonstop1h 30m

฿8,437

BangkokKo Samui

DMK - USM

DMKUSM

Bangkok Don Mueang Intl

Sun 20/9

18:15-19:45

Nonstop1h 30m

Ko Samui

Sat 3/10

06:55-08:25

Nonstop1h 30m

฿8,437

BangkokKo Samui

BKK - USM

BKKUSM

Bangkok Suvarnabhumi

Tue 11/8

06:05-07:10

Nonstop1h 05m

Ko Samui

Wed 26/8

06:00-07:15

Nonstop1h 15m

฿8,672

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 45 resultsSorted by cheapest first
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Best time to book a flight from Bangkok to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Bangkok with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Bangkok to Ko Samui

What is the cheapest month to book a flight from Bangkok to Ko Samui?

Currently, October is the cheapest month in which you can book a flight from Bangkok to Ko Samui (average of ฿7,126). Flying from Bangkok to Ko Samui in July is currently the most expensive (average of ฿10,084). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BKK to USM?

Find hourly flight availability from Bangkok to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 July 2026.

It’s optimal to fly from Bangkok to Ko Samui in the evening. By choosing this option you can save up to 31% on the cost of your flight, compared to a flight at midday.

Weekly flight availability from Bangkok to Ko Samui

Explore weekly flight availability from Bangkok to Ko Samui. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 July 2026.

The most flights from TH1 to USM are scheduled on a Friday (361 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (248 on average).

How much does it cost for a return flight from Bangkok to Ko Samui?

How often are flights from Bangkok to Ko Samui delayed?

About 16% of weekly flights between Bangkok and Ko Samui have experienced delays in the past year, with the average delay time being 92 minutes.

What is the most punctual flight time for Bangkok to Ko Samui flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Bangkok to Ko Samui flights?

Over the past year, Bangkok Airways have had the lowest number of delays on this route, with just 16% of flights being delayed.

How far ahead should I book a flight from Bangkok to Ko Samui?

The best time to book flights from Bangkok to Ko Samui is 87 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest day to fly from Bangkok to Ko Samui?

Use this chart to determine the cheapest time to fly return from Bangkok to Ko Samui. Price data was last updated on 11 July 2026.

Travellers seeking maximum savings on their Bangkok to Ko Samui flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated 18 July 2026.
Get a feel of what it's like to fly with Bangkok Airways from Bangkok to Ko Samui by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Bangkok Airways
8.1
Very Good
133 reviews
Check prices

Overall

8.1

Boarding

8.1

Crew

8.6

Comfort

7.9

Food

7.3

Entertainment

6.3

Reviews

1 / 8
10.0
Excellent

Agata,Feb 2026

USM - DMK

Great short flight and free really good snack and water which I didn’t expect
Bangkok Airways
8.1
Very Good
133 reviews
Bangkok Airways
8.1
Very Good
133 reviews
Check prices

Overall

8.1

Boarding

8.1

Crew

8.6

Comfort

7.9

Food

7.3

Entertainment

6.3

Reviews

1 / 8
10.0
Excellent

Agata,Feb 2026

USM - DMK

Great short flight and free really good snack and water which I didn’t expect

Related info for your journey

Find useful and relevant information for your journey from Bangkok to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ko Samui from Bangkok?

    Most people fly into Ko Samui (USM) if they book a flight to Ko Samui from Bangkok. On average, Ko Samui has 334 inbound flights from Bangkok per day from 1 airline. Ko Samui is conveniently located just 3.3 km from Ko Samui’s city centre.

  • How long is the flight from Bangkok to Ko Samui?

    Bangkok Airways can get you from Bangkok to Ko Samui in just under 1h 30m. Your travel time will be generally consistent. Bangkok and Ko Samui are separated by a distance of 489 km. All flights are typically direct.

  • What is the cheapest airline to fly from Bangkok to Ko Samui round-trip?

    According to our current data, Bangkok Airways (฿3,323), offers the cheapest pricing from Bangkok to Ko Samui. Bangkok Airways is 61% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Bangkok to Ko Samui?

    Before booking your flight to Ko Samui from Bangkok, have a look at the most reliable airlines to get you to your destination on time: แอร์ฟร้านซ์ (95%), Cathay Pacific (84%), สวิส อินเตอร์เนชั่นแนล แอร์ไลน์( 81%).

  • What are the cheapest flights from Bangkok to Ko Samui?

    The cheapest flight price from Bangkok to Ko Samui is ฿4,175. On average you can expect to pay ฿8,342. The most popular route, (Bangkok Suvarnabhumi - Ko Samui), can usually be booked for ฿5,243.

  • Can I find deals for flights from Bangkok to Ko Samui that include hotel bookings?

    Yes. In addition to deals on Bangkok to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Bangkok to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bangkok to Ko Samui.

  • Can I find deals for business class flights from Bangkok to Ko Samui?

    Yes. Cheapflights offers flight deals from Bangkok to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Bangkok to Ko Samui?

    Currently, October is the cheapest month in which you can book a flight from Bangkok to Ko Samui (average of ฿7,126). Flying from Bangkok to Ko Samui in July is currently the most expensive (average of ฿10,084). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Pha Ngan
Ko Tao
Khanom

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Alternative routes for Bangkok to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Phuket City flights
Chiang Mai to Krabi flights
Chiang Mai to Ko Samui flights
Phuket City to Chiang Mai flights
Phuket City to Ko Samui flights

Top airline flying from Bangkok to Ko Samui

Discover the top airline that operate flights from Bangkok to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 17,341 searches. Data last updated 18 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest฿3,323Average฿9,188FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Bangkok to Ko Samui?

Deals for Bangkok to Ko Samui flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Bangkok to Ko Samui?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ko Samui from Bangkok.

Can Cheapflights find flights from Bangkok to Ko Samui with no change fees?

Need flexible booking options for your flight to Ko Samui from Bangkok? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Bangkok to Ko Samui become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ko Samui from Bangkok today and book when prices fit your budget.

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