Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Thailand to Ko Samui from ฿3,399

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 21/3. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — USM
12 Mar — 19 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Thailand to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from Thailand to Ko Samui
Explore the most affordable flight options available from Thailand to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 February 2026.

Mon 14/914:00
KBV
-
USM
Nonstop0h 50m
Bangkok Airways
Thu 24/912:30
USM
-
KBV
Nonstop0h 50m
Bangkok Airways
Deal found 10/2฿3,898
Thu 15/1007:30
HKT
-
USM
Nonstop0h 55m
Bangkok Airways
Sun 18/1009:15
USM
-
HKT
Nonstop1h 00m
Bangkok Airways
Deal found 10/2฿3,930
Fri 16/1009:35
HKT
-
USM
Nonstop0h 55m
Bangkok Airways
Fri 30/1008:15
USM
-
HKT
Nonstop1h 00m
Bangkok Airways
Deal found 9/2฿3,961
Thu 28/518:15
HKT
-
USM
Nonstop0h 55m
Bangkok Airways
Sun 31/519:00
USM
-
HKT
Nonstop1h 00m
Bangkok Airways
Deal found 8/2฿3,992
Tue 12/516:00
HKT
-
USM
Nonstop0h 55m
Bangkok Airways
Mon 8/617:55
USM
-
HKT
Nonstop1h 00m
Bangkok Airways
Deal found 8/2฿4,085
Tue 26/519:30
HKT
-
USM
Nonstop0h 55m
Bangkok Airways
Mon 8/609:15
USM
-
HKT
Nonstop1h 00m
Bangkok Airways
Deal found 7/2฿4,148
Sun 20/907:30
HKT
-
USM
Nonstop0h 55m
Bangkok Airways
Fri 2/1011:25
USM
-
HKT
Nonstop1h 00m
Bangkok Airways
Deal found 8/2฿4,179
Sun 20/919:30
HKT
-
USM
Nonstop0h 55m
Bangkok Airways
Wed 30/915:25
USM
-
HKT
Nonstop1h 00m
Bangkok Airways
Deal found 9/2฿4,460
Thu 19/1117:25
UTP
-
USM
Nonstop1h 05m
Bangkok Airways
Mon 23/1111:10
USM
-
UTP
Nonstop1h 10m
Bangkok Airways
Deal found 8/2฿4,584
Mon 7/913:00
HKT
-
USM
Nonstop0h 55m
Bangkok Airways
Thu 1/1008:00
USM
-
HKT
Nonstop1h 00m
Bangkok Airways
Deal found 7/2฿4,584
Fri 5/619:30
HKT
-
USM
Nonstop0h 55m
Bangkok Airways
Sat 20/608:00
USM
-
HKT
Nonstop1h 00m
Bangkok Airways
Deal found 10/2฿4,678
Sun 20/918:25
KBV
-
USM
Nonstop0h 50m
Bangkok Airways
Fri 2/1017:00
USM
-
KBV
Nonstop0h 50m
Bangkok Airways
Deal found 9/2฿4,834

Find flight deals from Thailand to Ko Samui

Keep the following information in mind while searching for Thailand to Ko Samui flight deals. Data was last updated 10 February 2026.

Round-trip from

฿3,992

One-way from

฿3,399

Popular in

February

Cheapest in

November

Average price

฿8,795

Good round-trip deal

฿5,025 or less

Good one-way deal

฿3,912 or less
Bangkok Airways
  • Bangkok Airways
  • 28/5-31/5
  • Nonstop
  • 1h 55m total
  • Thailand to Ko Samui
Search Deals
Bangkok Airways
  • Bangkok Airways
  • 10/3
  • Nonstop
  • 1h 05m total
  • Thailand to Ko Samui
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (฿34,185 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿3,363 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Thailand to Ko Samui.
Search Deals
Price to beat on a one-way flight from Thailand to Ko Samui.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Thailand 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 10 February 2026.
Use the filters below to find and compare flights from Thailand to Ko Samui that are best for you.

Fly from

Thailand

Fly to

Ko Samui

Route

Depart

Return

Price

Phuket CityKo Samui

HKT - USM

HKTUSM

Phuket City

Tue 12/5

17:05-18:00

Nonstop0h 55m

Ko Samui

Mon 8/6

11:25-12:25

Nonstop1h 00m

฿4,085

Phuket CityKo Samui

HKT - USM

HKTUSM

Phuket City

Fri 5/6

19:30-20:25

Nonstop0h 55m

Ko Samui

Sat 20/6

08:00-09:00

Nonstop1h 00m

฿4,959

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 17/5

11:55-15:45

1 stop3h 50m

Ko Samui

Thu 21/5

08:55-10:40

Nonstop1h 45m

฿5,208

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 9/6

10:10-17:45

1 stop7h 35m

Ko Samui

Thu 11/6

08:45-13:45

1 stop5h 00m

฿5,302

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 7/6

11:55-15:45

1 stop3h 50m

Ko Samui

Thu 11/6

08:55-10:40

Nonstop1h 45m

฿5,302

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 7/6

11:55-17:45

1 stop5h 50m

Ko Samui

Tue 9/6

06:00-11:15

1 stop5h 15m

฿5,302

RayongKo Samui

UTP - USM

UTPUSM

Utapao Rayong Pattaya

Tue 16/6

17:20-18:25

Nonstop1h 05m

Ko Samui

Thu 2/7

11:10-12:20

Nonstop1h 10m

฿5,770

BangkokKo Samui

BKK - USM

BKKUSM

Bangkok Suvarnabhumi

Sun 24/5

07:00-14:50

1 stop7h 50m

Ko Samui

Fri 29/5

17:00-22:05

1 stop5h 05m

฿5,925

BangkokKo Samui

BKK - USM

BKKUSM

Bangkok Suvarnabhumi

Mon 18/5

07:00-10:30

1 stop3h 30m

Ko Samui

Sat 30/5

12:30-17:55

1 stop5h 25m

฿5,957

BangkokKo Samui

BKK - USM

BKKUSM

Bangkok Suvarnabhumi

Fri 22/5

07:00-14:50

1 stop7h 50m

Ko Samui

Wed 27/5

17:00-22:05

1 stop5h 05m

฿5,957

Flights are sorted by cheapest return flights first.

Deals found on 9/2

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Thailand to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Thailand 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 Thailand to Ko Samui

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

Currently, August is the cheapest month in which you can book a flight from Thailand to Ko Samui (average of ฿873). Flying from Thailand to Ko Samui in April is currently the most expensive (average of ฿1,591). 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 TH to USM?

Find hourly flight availability from Thailand 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 10 February 2026.

One of the essential ways to save on airfare from Thailand to Ko Samui is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 19% on airfare.

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

Use this chart to determine the cheapest time to fly return from Thailand to Ko Samui. Price data was last updated on 7 February 2026.

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

Weekly flight availability from Thailand to Ko Samui

Explore weekly flight availability from Thailand 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 10 February 2026.

The most flights from TH0 to USM are scheduled on a Tuesday (361 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (320 on average).

How often are flights from Thailand to Ko Samui delayed?

About 18% of weekly flights between Thailand and Ko Samui have experienced delays in the past year, with the average delay time being 87 minutes.

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

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

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

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

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

Over the past year, Bangkok Airways have had the lowest number of delays on this route, with just 18% of flights being delayed.

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 10 February 2026.
Get a feel of what it's like to fly with Bangkok Airways from Thailand 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
8.0
Very Good
122 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.0

Crew

8.6

Food

7.3

Entertainment

6.3

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.
Bangkok Airways
8.0
Very Good
122 reviews
Bangkok Airways
8.0
Very Good
122 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.0

Crew

8.6

Food

7.3

Entertainment

6.3

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.

Related info for your journey

Find useful and relevant information for your journey from Thailand 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 Thailand?

    Ko Samui (USM) is the airport you will fly into if you book a flight from Thailand to Ko Samui. It is only a 3.3 km journey from Ko Samui (USM) to Ko Samui’s city centre.

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

    A quick flight from Thailand to Ko Samui can take about 55m. Bangkok Airways provides one of the quickest options available for as low as ฿4,085. Airlines will cover a distance of 249 km. Most flights are nonstop.

  • What are the most popular routes from Thailand to Ko Samui?

    Most travellers choose Bangkok Suvarnabhumi - Ko Samui, Bangkok Don Mueang Intl - Ko Samui or Chiang Mai - Ko Samui when deciding on the best route from Thailand to Ko Samui.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Thailand to Ko Samui on time: Japan Airlines (80%), Malaysia Airlines (77%), โอมานแอร์ (77%).

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

    Looking at all options, your cheapest flight can be booked for ฿3,876. While the most popular route (Bangkok Suvarnabhumi - Ko Samui) can be booked for ฿4,460 on average, our data indicates ฿6,738 when flying from Thailand to Ko Samui.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Thailand 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 Thailand to Ko Samui?

    Currently, August is the cheapest month in which you can book a flight from Thailand to Ko Samui (average of ฿873). Flying from Thailand to Ko Samui in April is currently the most expensive (average of ฿1,591). 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 Tao
Ko Pha Ngan

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Thailand to Ko Samui

Discover the top airline that operate flights from Thailand 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 10 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest฿3,707Average฿8,117FlexibilityNo 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 Thailand to Ko Samui?

Cheapflights helps you search for flights from Thailand to Ko Samui via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Thailand to Ko Samui for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Thailand to Ko Samui, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from Thailand to Ko Samui and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.