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Cheap flights from Thailand to Ko Samui from ฿1,671

BKK — USM
6 Dec — 13 Dec1
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

Thu 5/1113:45 -
Nonstop0h 45m
Sun 8/1112:25 -
Nonstop0h 50m
Deal found 1/11฿3,209
Tue 10/1117:25 -
Nonstop1h 05m
Fri 13/1111:10 -
Nonstop1h 10m
Deal found 3/11฿4,412
Thu 12/1117:25 -
Nonstop1h 05m
Mon 16/1111:10 -
Nonstop1h 10m
Deal found 5/11฿4,613
Thu 5/1119:25 -
1 stop12h 10m
Sun 8/1112:25 -
Nonstop0h 50m
Deal found 1/11฿5,114
Tue 10/1111:00 -
Nonstop0h 55m
Sat 21/1108:15 -
Nonstop1h 00m
Deal found 4/11฿5,114
Thu 5/1117:30 -
Nonstop0h 55m
Thu 12/1111:10 -
Nonstop1h 00m
Deal found 3/11฿5,148
Thu 5/1117:30 -
Nonstop0h 55m
Mon 9/1118:15 -
Nonstop1h 00m
Deal found 3/11฿5,181
Tue 10/1109:45 -
Nonstop0h 55m
Tue 17/1108:15 -
Nonstop1h 00m
Deal found 3/11฿5,215
Thu 19/1117:30 -
Nonstop0h 55m
Mon 23/1118:15 -
Nonstop1h 00m
Deal found 5/11฿5,248
Thu 10/1206:00 -
Nonstop1h 10m
Wed 16/1207:00 -
Nonstop1h 15m
Deal found 4/11฿5,248
Fri 6/1106:00 -
Nonstop1h 10m
Mon 30/1107:00 -
Nonstop1h 15m
Deal found 3/11฿5,282
Mon 9/1108:50 -
Nonstop1h 35m
Thu 12/1111:10 -
1 stop11h 05m
Deal found 4/11฿5,282

Find flight deals from Thailand to Ko Samui

Round-trip from

฿5,248

One-way from

฿1,671

Popular in

February

Cheapest in

October

Average price

฿7,087

Good round-trip deal

฿5,009 or less

Good one-way deal

฿2,727 or less
Bangkok Airways
  • Bangkok Airways
  • 19/11-23/11
  • Nonstop
  • 1h 55m total
  • Thailand to Ko Samui
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Bangkok Airways
  • Bangkok Airways
  • 9/11-31/12
  • Nonstop
  • 0h 45m total
  • Thailand to Ko Samui
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (฿43,857 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (฿4,713 potential savings vs. average return price).
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Average for round-trip flights in November 2026
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Price to beat on a round-trip flight from Thailand to Ko Samui.
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Price to beat on a one-way flight from Thailand to Ko Samui.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Thailand to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Fri 13/11

18:55-20:30

Nonstop1h 35m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿2,541

BangkokKo Samui

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Mon 12/4

06:05-07:10

Nonstop1h 05m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿2,708

BangkokKo Samui

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Mon 25/1

06:00-07:10

Nonstop1h 10m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿2,708

BangkokKo Samui

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Wed 24/2

06:00-07:10

Nonstop1h 10m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿2,708

RayongKo Samui

UTP Utapao Rayong Pattaya - USM Ko Samui

UTPUSM

Utapao Rayong Pattaya

Sun 14/3

17:25-18:30

Nonstop1h 05m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,109

BangkokKo Samui

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Thu 12/11

06:00-07:10

Nonstop1h 10m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,142

BangkokKo Samui

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Mon 8/3

19:45-21:20

Nonstop1h 35m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,142

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Mon 15/3

18:55-20:30

Nonstop1h 35m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,142
Fastest return journey

Phuket CityKo Samui

HKT Phuket City - USM Ko Samui

HKTUSM

Phuket City

Fri 4/12

07:30-08:25

Nonstop0h 55m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,242

Phuket CityKo Samui

HKT Phuket City - USM Ko Samui

HKTUSM

Phuket City

Sat 5/12

19:55-20:50

Nonstop0h 55m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,242

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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, October is the cheapest month in which you can book a flight from Thailand to Ko Samui (average of ฿6,886). Flying from Thailand to Ko Samui in February is currently the most expensive (average of ฿10,062). 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?

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 in the evening could potentially save you up to 35% on airfare.

Weekly flight availability from Thailand to Ko Samui

The most flights from TH0 to USM are scheduled on a Wednesday (234 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (172 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 92 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 early afternoon tend to experience delays more often.

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

Monday tends to have the lowest number of delays on this route, whereas Thursday 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.

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

The best time to book flights from Thailand 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 Thailand to Ko Samui?

Travellers seeking maximum savings on their Thailand to Ko Samui flight should consider departing on Saturday evenings when fares are most often at their lowest. Tuesday 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 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
8.1
Very Good
132 reviews
Check prices

Food

7.3

Overall

8.1

Comfort

7.9

Entertainment

6.3

Boarding

8.1

Crew

8.5

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
132 reviews
Bangkok Airways
8.1
Very Good
132 reviews
Check prices

Food

7.3

Overall

8.1

Comfort

7.9

Entertainment

6.3

Boarding

8.1

Crew

8.5

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

  • 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 1h 05m. Bangkok Airways provides one of the quickest options available for as low as ฿5,482. Airlines will cover a distance of 467 km. Most flights are nonstop.

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

    Most travellers choose Bangkok Don Mueang Intl - Ko Samui, Bangkok Suvarnabhumi - Ko Samui or Phuket City - 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: แอร์ฟร้านซ์ (86%), Cathay Pacific (76%), Japan Airlines (71%).

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

    Looking at all options, your cheapest flight can be booked for ฿2,583. While the most popular route (Bangkok Don Mueang Intl - Ko Samui) can be booked for ฿3,176 on average, our data indicates ฿4,395 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, October is the cheapest month in which you can book a flight from Thailand to Ko Samui (average of ฿6,886). Flying from Thailand to Ko Samui in February is currently the most expensive (average of ฿10,062). 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Thailand to Ko Samui

AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest฿4,067Average฿9,946FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights

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

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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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