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Cheap flights from Thailand to Ko Samui from ฿1,776

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — USM
20 Jun — 27 Jun1
1 adult

Cheap 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 15 June 2025.

Round-trip from

฿3,809

One-way from

฿1,776

Popular in

December

Cheapest in

September

Average price

฿6,973

Good round-trip deal

฿5,166 or less

Good one-way deal

฿2,878 or less
Bangkok Airways
  • Bangkok Airways
  • 9/9-22/9
  • Nonstop
  • 2h 20m total
  • Thailand to Ko Samui
Search Deals
Bangkok Airways
  • Bangkok Airways
  • 16/9
  • Nonstop
  • 1h 05m total
  • Thailand to Ko Samui
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (฿10,458 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿3,456 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
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.
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Find flight deals from Thailand to Ko Samui

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 15 June 2025.

Tue 9/917:20UTP - USM
Nonstop1h 05mBangkok Airways
Mon 22/911:10USM - UTP
Nonstop1h 15mBangkok Airways
Deal found 14/6฿3,809
Tue 9/910:10CNX - USM
1 stop5h 00mBangkok Airways
Fri 12/908:55USM - CNX
Nonstop1h 45mBangkok Airways
Deal found 14/6฿5,230
Thu 16/1009:25KBV - USM
1 stop8h 20mBangkok Airways
Thu 23/1012:30USM - KBV
Nonstop0h 50mBangkok Airways
Deal found 14/6฿5,488
Thu 11/922:00HKT - USM
1 stop9h 20mMultiple Airlines
Thu 18/919:00USM - HKT
Nonstop1h 00mMultiple Airlines
Deal found 13/6฿5,585
Mon 20/1009:35HKT - USM
Nonstop0h 55mBangkok Airways
Tue 28/1007:55USM - HKT
1 stop4h 05mBangkok Airways
Deal found 13/6฿5,617
Sun 14/906:15BKK - USM
Nonstop1h 05mBangkok Airways
Wed 1/1019:10USM - BKK
Nonstop1h 15mBangkok Airways
Deal found 14/6฿5,617
Fri 26/918:15DMK - USM
Nonstop1h 30mBangkok Airways
Wed 22/1006:55USM - DMK
Nonstop1h 30mBangkok Airways
Deal found 13/6฿5,617
Wed 3/915:20BKK - USM
1 stop5h 05mMultiple Airlines
Fri 12/907:00USM - BKK
Nonstop1h 15mMultiple Airlines
Deal found 14/6฿5,682
Tue 9/906:35CNX - USM
2 stops27h 55mMultiple Airlines
Fri 12/908:55USM - CNX
Nonstop1h 45mMultiple Airlines
Deal found 14/6฿5,714
Wed 3/911:15DMK - USM
1 stop5h 40mMultiple Airlines
Thu 25/906:55USM - DMK
Nonstop1h 30mMultiple Airlines
Deal found 13/6฿5,746
Thu 28/817:20UTP - USM
Nonstop1h 05mMultiple Airlines
Wed 3/906:55USM - UTP
2 stops31h 15mMultiple Airlines
Deal found 15/6฿7,425
Mon 16/620:45KBV - USM
1 stop10h 35mMultiple Airlines
Tue 22/712:30USM - KBV
Nonstop0h 50mMultiple Airlines
Deal found 15/6฿7,619

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 15 June 2025.
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

RayongKo Samui

UTP - USM

UTPUSM

Rayong Utapao Rayong Pattaya

Tue 9/9

17:20-18:25

Nonstop1h 05m

Ko Samui

Mon 22/9

11:10-12:25

Nonstop1h 15m

฿3,809

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 9/9

10:10-15:10

1 stop5h 00m

Ko Samui

Fri 12/9

08:55-10:40

Nonstop1h 45m

฿5,230

KrabiKo Samui

KBV - USM

KBVUSM

Krabi

Thu 16/10

09:25-17:45

1 stop8h 20m

Ko Samui

Thu 23/10

12:30-13:20

Nonstop0h 50m

฿5,488

Phuket CityKo Samui

HKT - USM

HKTUSM

Phuket City

Thu 11/9

22:00-07:20

1 stop9h 20m

Ko Samui

Thu 18/9

19:00-20:00

Nonstop1h 00m

฿5,585

Phuket CityKo Samui

HKT - USM

HKTUSM

Phuket City

Mon 20/10

09:35-10:30

Nonstop0h 55m

Ko Samui

Tue 28/10

07:55-12:00

1 stop4h 05m

฿5,617

BangkokKo Samui

BKK - USM

BKKUSM

Bangkok Suvarnabhumi

Sun 14/9

06:15-07:20

Nonstop1h 05m

Ko Samui

Wed 1/10

19:10-20:25

Nonstop1h 15m

฿5,617

BangkokKo Samui

DMK - USM

DMKUSM

Bangkok Don Mueang Intl

Fri 26/9

18:15-19:45

Nonstop1h 30m

Ko Samui

Wed 22/10

06:55-08:25

Nonstop1h 30m

฿5,617

BangkokKo Samui

BKK - USM

BKKUSM

Bangkok Suvarnabhumi

Wed 3/9

15:20-20:25

1 stop5h 05m

Ko Samui

Fri 12/9

07:00-08:15

Nonstop1h 15m

฿5,682

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 9/9

06:35-10:30

2 stops27h 55m

Ko Samui

Fri 12/9

08:55-10:40

Nonstop1h 45m

฿5,714

BangkokKo Samui

DMK - USM

DMKUSM

Bangkok Don Mueang Intl

Wed 3/9

11:15-16:55

1 stop5h 40m

Ko Samui

Thu 25/9

06:55-08:25

Nonstop1h 30m

฿5,746

Flights are sorted by cheapest return flights first.

Deals found on 14/6

Showing 1-10 of 31 results
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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, May is the cheapest month in which you can book a flight from Thailand to Ko Samui (average of ฿173). Flying from Thailand to Ko Samui in February is currently the most expensive (average of ฿258). 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 15 June 2025.

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 morning tend to be the most expensive. A flight at midday could potentially save you up to 49% 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 8 June 2025.

Travellers seeking maximum savings on their Thailand to Ko Samui flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Tuesday afternoons 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 15 June 2025.

The most flights from TH0 to USM are scheduled on a Saturday (266 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (240 on average).

Rainfall in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

Temperature in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

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 15 June 2025.
Get a feel of what it's like to fly with Bangkok Airways and Malaysia Airlines from Thailand to Ko Samui by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Bangkok Airways
8.0
Very Good
111 reviews
Check prices

Boarding

7.9

Crew

8.5

Comfort

7.8

Entertainment

6.2

Food

7.2

Overall

8.0

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
111 reviews
Bangkok Airways
8.0
Very Good
111 reviews
Check prices

Boarding

7.9

Crew

8.5

Comfort

7.8

Entertainment

6.2

Food

7.2

Overall

8.0

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.
Malaysia Airlines
7.4
Good
263 reviews
Bangkok Airways
8.0
Very Good
111 reviews
Check prices

Boarding

7.9

Crew

8.5

Comfort

7.8

Entertainment

6.2

Food

7.2

Overall

8.0

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.

  • 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: เอทิฮัดแอร์เวย์ (92%), Emirates (86%), Finnair (83%).

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

    Looking at all options, your cheapest flight can be booked for ฿2,187. While the most popular route (Bangkok Suvarnabhumi - Ko Samui) can be booked for ฿4,455 on average our data indicates ฿5,703 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, May is the cheapest month in which you can book a flight from Thailand to Ko Samui (average of ฿173). Flying from Thailand to Ko Samui in February is currently the most expensive (average of ฿258). 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 Thailand?

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

Browse thousands of different options on Cheapflights for your next trip

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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 15 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest฿3,908Average฿8,239FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights

Fly with Cheapflights

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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.

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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.

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