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Cheap flights from Chiang Mai to Ko Samui from ฿5,106

CNX — USM
20 Nov — 27 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chiang Mai to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from Chiang Mai to Ko Samui

Thu 5/1119:45 -
1 stop11h 25m
Mon 9/1108:50 -
Nonstop1h 50m
Deal found 16/10฿7,895
Thu 5/1108:55 -
1 stop6h 25m
Mon 9/1108:50 -
Nonstop1h 50m
Deal found 19/10฿7,962
Fri 6/1122:35 -
1 stop8h 35m
Mon 9/1108:50 -
Nonstop1h 50m
Deal found 20/10฿8,130
Thu 29/1022:30 -
1 stop8h 40m
Sun 1/1108:50 -
Nonstop1h 50m
Deal found 16/10฿8,298
Mon 26/1020:50 -
1 stop12h 15m
Mon 2/1108:50 -
Nonstop1h 50m
Deal found 19/10฿8,331
Fri 30/1019:45 -
1 stop11h 25m
Mon 2/1108:50 -
Nonstop1h 50m
Deal found 20/10฿8,399

Find flight deals from Chiang Mai to Ko Samui

Round-trip from

฿7,727

One-way from

฿5,106

Popular in

December

Cheapest in

September

Average price

฿12,497

Good round-trip deal

฿14,791 or less

Good one-way deal

฿6,014 or less
Bangkok Airways
  • Bangkok Airways
  • 17/3-5/4
  • 1 total stop
  • 10h 45m total
  • Chiang Mai to Ko Samui
Search Deals
21/2-31/12
  • 21/2-31/12
  • 1 total stop
  • 13h 35m total
  • Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (฿51,803 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿18,778 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Chiang Mai to Ko Samui.
Search Deals
Price to beat on a one-way flight from Chiang Mai to Ko Samui.
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Mon 26/10

19:45-07:10

1 stop11h 25m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿5,442

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 26/2

10:10-17:00

1 stop6h 50m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿6,584

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Thu 18/2

12:10-20:25

1 stop8h 15m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿6,584

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 8/1

12:10-20:25

1 stop8h 15m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿7,223

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Thu 5/11

19:45-07:10

1 stop11h 25m

Ko Samui

Mon 9/11

08:50-10:40

Nonstop1h 50m

฿8,063

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Tue 15/12

10:10-17:00

1 stop6h 50m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿8,197

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 30/10

19:45-07:10

1 stop11h 25m

Ko Samui

Sun 1/11

08:50-10:40

Nonstop1h 50m

฿8,701

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 30/10

22:10-07:10

1 stop9h 00m

Ko Samui

Sun 1/11

06:45-12:25

1 stop5h 40m

฿10,313
Fastest return journey

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 30/10

11:30-13:15

Nonstop1h 45m

Ko Samui

Mon 2/11

08:50-10:40

Nonstop1h 50m

฿10,448

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 30/10

22:30-07:10

1 stop8h 40m

Ko Samui

Mon 2/11

11:00-15:55

1 stop4h 55m

฿10,649

Flights are sorted by cheapest return flights first.

Deals found on 17/10

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Best time to book a flight from Chiang Mai to Ko Samui

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

Cheapflights Insights

Everything you need to know about your flight from Chiang Mai to Ko Samui

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

Currently, September is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of ฿5,778). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of ฿19,485). 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 CNX to USM?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chiang Mai to Ko Samui as you normally would.

How much does it cost for a return flight from Chiang Mai to Ko Samui?

Airfare is below average for this route at the moment.

Chiang Mai to Ko Samui flights typically cost between ฿10,095 and ฿13,354 in March.
The cheapest return price found within the last 5 days was ฿7,727 on Multiple Airlines (17 Mar–5 Apr).

Reviews of airlines servicing Ko Samui

Read reviews from past customers who have flown with Bangkok Airways from Chiang Mai to Ko Samui. Users can see the overall rating for each airline as well as how each is rated 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

Boarding

8.1

Food

7.3

Overall

8.1

Crew

8.6

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

Boarding

8.1

Food

7.3

Overall

8.1

Crew

8.6

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 airports do I use to fly from Chiang Mai to Ko Samui?

    If you book a flight from Chiang Mai to Ko Samui, you will be flying from Chiang Mai to Ko Samui. Flights to Ko Samui (USM) from Chiang Mai (CNX) take 1h 45m for a nonstop flight. There are 5 flights from Chiang Mai to Ko Samui per day from 1 airline.

  • How popular is this Chiang Mai to Ko Samui flight route?

    Flights from Chiang Mai to Ko Samui have been viewed 4 times in the past calendar month.

  • How long is the flight from Chiang Mai to Ko Samui?

    Bangkok Airways can get you from Chiang Mai to Ko Samui in just under 11h 25m. Your travel time can differ by up to . Chiang Mai and Ko Samui are separated by a distance of 1032 km.

  • What is the cheapest airline to fly from Chiang Mai to Ko Samui round-trip?

    Our cheapest airline available from Chiang Mai to Ko Samui is Bangkok Airways. Our recent data shows that you can find tickets from as low as ฿4,088 on this airline. You may be able to fly from Chiang Mai to Ko Samui for 69% less than the average price by searching for this airline.

  • What are the most reliable airlines from Chiang Mai 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 Chiang Mai to Ko Samui on time: EVA Air (88%), Thai Airways (88%), เอทิฮัดแอร์เวย์ (88%).

  • What are the cheapest flights from Chiang Mai to Ko Samui?

    The cheapest flight price from Chiang Mai to Ko Samui is ฿4,609. On average you can expect to pay ฿14,966. The most popular route, (Chiang Mai - Ko Samui), can usually be booked for ฿7,962.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chiang Mai 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 Chiang Mai to Ko Samui?

    Currently, September is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of ฿5,778). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of ฿19,485). 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

Fly from Chiang Mai to Ko Samui on these airlines

Bangkok Airways flights from Chiang Mai to Ko Samui

Top airline flying from Chiang Mai to Ko Samui

AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest฿4,088Average฿14,944FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Chiang Mai to Ko Samui?

Cheapflights helps you search for flights from Chiang Mai 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 Chiang Mai to Ko Samui?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Chiang Mai to Ko Samui.

Can Cheapflights find flights from Chiang Mai 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 Chiang Mai 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 Chiang Mai to Ko Samui become cheaper?

Of course! You can now track prices for flights from Chiang Mai 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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