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Cheap flights from Thailand to Ko Samui from ฿2,070

BKK — USM
6 Oct — 13 Oct1
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 15/1019:30 -
Nonstop0h 55m
Mon 19/1017:55 -
Nonstop1h 00m
Deal found 3/9฿4,862
Fri 16/1017:05 -
Nonstop0h 55m
Mon 19/1019:00 -
Nonstop1h 00m
Deal found 1/9฿4,961
Tue 13/1017:05 -
Nonstop0h 55m
Fri 16/1019:00 -
Nonstop1h 00m
Deal found 3/9฿5,059
Tue 3/1117:25 -
Nonstop1h 05m
Tue 10/1111:10 -
Nonstop1h 10m
Deal found 3/9฿5,125
Wed 7/1019:30 -
Nonstop0h 55m
Fri 23/1019:00 -
Nonstop1h 00m
Deal found 1/9฿5,125
Tue 13/1017:05 -
Nonstop0h 55m
Sat 31/1018:15 -
Nonstop1h 00m
Deal found 3/9฿5,158
Fri 16/1019:30 -
Nonstop0h 55m
Fri 23/1019:00 -
Nonstop1h 00m
Deal found 1/9฿5,256
Fri 11/918:25 -
Nonstop0h 50m
Sun 13/917:00 -
Nonstop0h 50m
Deal found 1/9฿5,322
Sun 18/1017:20 -
Nonstop1h 05m
Thu 22/1011:10 -
Nonstop1h 10m
Deal found 1/9฿5,322
Thu 29/1016:35 -
Nonstop0h 55m
Sat 31/1008:15 -
Nonstop1h 00m
Deal found 2/9฿5,322
Fri 16/1017:20 -
Nonstop1h 05m
Fri 23/1011:10 -
Nonstop1h 10m
Deal found 3/9฿5,355
Sat 31/1006:10 -
Nonstop1h 35m
Sun 1/1107:00 -
Nonstop1h 15m
Deal found 6/9฿5,585

Find flight deals from Thailand to Ko Samui

Round-trip from

฿4,862

One-way from

฿2,070

Popular in

July

Cheapest in

October

Average price

฿7,622

Good round-trip deal

฿6,481 or less

Good one-way deal

฿3,863 or less
Bangkok Airways
  • Bangkok Airways
  • 15/10-19/10
  • Nonstop
  • 1h 55m total
  • Thailand to Ko Samui
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Bangkok Airways
  • Bangkok Airways
  • 16/10-31/12
  • Nonstop
  • 1h 05m total
  • Thailand to Ko Samui
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (฿15,791 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (฿3,822 potential savings vs. average return price).
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Average for round-trip flights in September 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

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Mon 9/11

07:30-08:40

Nonstop1h 10m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,055

RayongKo Samui

UTP Utapao Rayong Pattaya - USM Ko Samui

UTPUSM

Utapao Rayong Pattaya

Fri 23/10

17:20-18:25

Nonstop1h 05m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,088

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Thu 15/10

18:15-19:45

Nonstop1h 30m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,121

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Sat 14/11

18:55-20:30

Nonstop1h 35m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,154

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Thu 26/11

08:50-10:25

Nonstop1h 35m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,220

RayongKo Samui

UTP Utapao Rayong Pattaya - USM Ko Samui

UTPUSM

Utapao Rayong Pattaya

Sun 4/10

17:20-18:25

Nonstop1h 05m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,384

RayongKo Samui

UTP Utapao Rayong Pattaya - USM Ko Samui

UTPUSM

Utapao Rayong Pattaya

Mon 12/10

17:20-18:25

Nonstop1h 05m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,384

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Sat 17/10

09:05-10:35

Nonstop1h 30m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,581

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Sun 18/10

09:05-10:35

Nonstop1h 30m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,581

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Mon 5/10

18:15-19:45

Nonstop1h 30m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿3,581

Flights are sorted by cheapest return flights first.

Deals found on 3/9

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 ฿6,965). Flying from Thailand to Ko Samui in July is currently the most expensive (average of ฿9,790). 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 38% on airfare.

Weekly flight availability from Thailand to Ko Samui

The most flights from TH0 to USM are scheduled on a Thursday (343 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (313 on average).

How often are flights from Thailand to Ko Samui delayed?

About 16% of weekly flights between Thailand and Ko Samui have experienced delays in the past year, with the average delay time being 90 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 Friday 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 16% 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. Wednesday evenings 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
133 reviews
Check prices

Comfort

7.9

Entertainment

6.3

Food

7.3

Crew

8.6

Boarding

8.1

Overall

8.1

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

Comfort

7.9

Entertainment

6.3

Food

7.3

Crew

8.6

Boarding

8.1

Overall

8.1

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 55m. Bangkok Airways provides one of the quickest options available for as low as ฿5,289. 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: แอร์ฟร้านซ์ (83%), Cathay Pacific (74%), Japan Airlines (68%).

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

    Looking at all options, your cheapest flight can be booked for ฿2,711. While the most popular route (Bangkok Suvarnabhumi - Ko Samui) can be booked for ฿4,961 on average, our data indicates ฿7,527 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 ฿6,965). Flying from Thailand to Ko Samui in July is currently the most expensive (average of ฿9,790). 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฿3,905Average฿9,661FlexibilityNo 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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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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