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฿3,153+ Cheap flights to Ko Samui

— USM
20 Sep — 27 Sep1
1 adult
1 adult, Economy, 0 bags

Flights to Ko Samui in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Ko Samui

Tue 15/906:05 -
Nonstop1h 05m
Tue 22/906:00 -
Nonstop1h 15m
Deal found 17/8฿5,616
Thu 15/1018:15 -
Nonstop1h 30m
Sun 18/1006:55 -
Nonstop1h 30m
Deal found 19/8฿5,616
Mon 5/1019:20 -
Nonstop1h 30m
Thu 15/1007:50 -
Nonstop1h 15m
Deal found 18/8฿5,682
Thu 5/1118:55 -
Nonstop1h 35m
Mon 9/1106:45 -
Nonstop1h 35m
Deal found 18/8฿5,682
Tue 20/1006:05 -
Nonstop1h 05m
Fri 23/1018:55 -
Nonstop1h 30m
Deal found 17/8฿5,715
Mon 2/1108:50 -
Nonstop1h 35m
Fri 6/1106:45 -
Nonstop1h 35m
Deal found 17/8฿5,715
Thu 8/1006:05 -
Nonstop1h 05m
Mon 12/1006:00 -
Nonstop1h 15m
Deal found 17/8฿5,748
Thu 15/1018:15 -
Nonstop1h 30m
Sat 17/1006:55 -
Nonstop1h 30m
Deal found 18/8฿5,748
Thu 29/1019:15 -
Nonstop1h 10m
Sat 28/1107:00 -
Nonstop1h 15m
Deal found 19/8฿5,781
Tue 10/1108:50 -
Nonstop1h 35m
Fri 13/1106:45 -
Nonstop1h 35m
Deal found 19/8฿5,781
Wed 7/1020:05 -
Nonstop1h 30m
Wed 14/1006:00 -
Nonstop1h 15m
Deal found 18/8฿5,813
Tue 13/1013:25 -
Nonstop1h 30m
Thu 22/1006:55 -
Nonstop1h 30m
Deal found 19/8฿5,846

Find flight deals to Ko Samui

Return from

฿5,616

One-way from

฿3,153

Popular in

July

Cheapest in

October

Average price

฿9,820
Bangkok Airways
  • Bangkok Airways
  • 6/2-9/2
  • Nonstop
  • 2h 25m total
  • Bangkok to Ko Samui
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Bangkok Airways
  • Bangkok Airways
  • 26/8
  • Nonstop
  • 1h 30m total
  • Bangkok to Ko Samui
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (฿563 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿123 potential savings vs. average return price).
Search Deals
Average for return flights in August 2026
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Cheapflights Fare Finder

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

Fly from

Route

Depart

Return

Price

Cheapest return flight

BangkokKo Samui

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Sat 9/1

06:00-07:10

Nonstop1h 10m

Ko Samui

Wed 3/2

07:00-08:15

Nonstop1h 15m

฿6,438

BangkokKo Samui

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Wed 13/1

06:00-07:10

Nonstop1h 10m

Ko Samui

Sat 30/1

07:00-08:15

Nonstop1h 15m

฿6,438

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

Fri 16/10

06:55-08:25

Nonstop1h 30m

฿6,438
Fastest return journey

BangkokKo Samui

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Sat 19/9

06:05-07:10

Nonstop1h 05m

Ko Samui

Sun 20/9

06:00-07:15

Nonstop1h 15m

฿6,667

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Fri 27/11

18:55-20:30

Nonstop1h 35m

Ko Samui

Sat 5/12

06:45-08:20

Nonstop1h 35m

฿6,897

BangkokKo Samui

BKK Bangkok Suvarnabhumi - USM Ko Samui

BKKUSM

Bangkok Suvarnabhumi

Wed 30/9

06:05-07:10

Nonstop1h 05m

Ko Samui

Sun 8/11

12:25-23:30

1 stop11h 05m

฿7,291

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Thu 17/9

18:15-19:45

Nonstop1h 30m

Ko Samui

Fri 16/10

06:55-08:25

Nonstop1h 30m

฿7,521

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Thu 17/9

18:15-19:45

Nonstop1h 30m

Ko Samui

Sat 17/10

06:55-08:25

Nonstop1h 30m

฿7,521

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Mon 14/9

18:15-19:45

Nonstop1h 30m

Ko Samui

Fri 16/10

06:55-08:25

Nonstop1h 30m

฿7,850

BangkokKo Samui

DMK Bangkok Don Mueang Intl - USM Ko Samui

DMKUSM

Bangkok Don Mueang Intl

Mon 14/9

18:15-19:45

Nonstop1h 30m

Ko Samui

Sun 18/10

06:55-08:25

Nonstop1h 30m

฿7,850

Flights are sorted by cheapest return flights first.

Deals found on 19/8

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

Have a flexible travel schedule? Discover the best time to fly to Ko Samui with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight to Ko Samui

How long is the flight to Ko Samui?

On average, a flight from Bangkok to Ko Samui takes 1 hour 15 minutes. Flights to Ko Samui from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Ko Samui

The most flights from Bangkok to Ko Samui are scheduled on a Wednesday (365 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (222 on average).

What are the most popular airlines that fly to Ko Samui?

The most popular airline flying from Bangkok to Ko Samui is Bangkok Airways.

Bangkok Airways
Bangkok Airways
From ฿3,928

What are the cheapest airlines that fly to Ko Samui?

The cheapest airline flying from Bangkok to Ko Samui is Bangkok Airways.

Rainfall in Ko Samui by month

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 mm 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

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).

When is the best time to book a flight to Ko Samui?

The best time to book flights 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.

When is the cheapest time to fly to Ko Samui?

Users looking for the lowest fares to Ko Samui should consider flying on Friday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Wednesday evenings, when prices are usually at their highest.

Reviews of airlines servicing Ko Samui

Read reviews from past customers who have flown Bangkok Airways to Thailand. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Bangkok Airways
8.1
Very Good
133 reviews
Check prices

Boarding

8.1

Food

7.3

Overall

8.1

Comfort

7.9

Crew

8.6

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

Boarding

8.1

Food

7.3

Overall

8.1

Comfort

7.9

Crew

8.6

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

FAQs about flying to Ko Samui

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

    Booking a flight to Ko Samui (USM) is your only option if you intend on flying to Ko Samui. It is only a 3.3 km journey from Ko Samui to Ko Samui’s city centre. Ko Samui is the only Ko Samui airport and it handles 291 daily flights from Bangkok. 1 airline has flights from Bangkok to Ko Samui on a regular basis.

  • Can I find cheaper flights to Ko Samui if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ko Samui on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ko Samui?

    Based on reviews from Cheapflights users, Bangkok Airways is rated the highest out of the airlines that fly to Ko Samui.

  • What is the cheapest airport to fly to in Ko Samui?

    Ko Samui is currently the cheapest airport to fly to in Ko Samui. One-way flights to Ko Samui typically cost ฿3,435, while return flights cost around ฿2,913.

  • How much is a return flight to Ko Samui?

    A return flight to Ko Samui will typically cost around ฿11,281, however they can be found for as little as ฿2,913.

  • Where does the fastest flight to Ko Samui depart from?

    For those looking to save time traveling to Ko Samui, Krabi offers the quickest one-way flight (0 hours 45 minutes).

  • Does Ko Samui have rental cars?

    Yes. Those touching down at Ko Samui can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ko Samui?

    Yes. Ko Samui has hotels nearby for those requiring accommodations. Diamond Pool Villa Samui is the closest property to Ko Samui (0.0 km away from Ko Samui).

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

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How does Cheapflights help users find flights to Ko Samui?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights to Ko Samui. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets 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.

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

Need flexible booking options for your flight to Ko Samui ? 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 to Ko Samui become cheaper?

Yes, Cheapflights offers price alerts on Ko Samui flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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