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Cheap flights from Chiang Mai to Ko Samui from ฿5,203

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 18/6. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
27 May — 3 Jun1
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
Explore the most affordable flight options available from Chiang Mai to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 April 2026.

Sat 10/1020:00
CNX
-
USM
1 stop11h 10m
Bangkok Airways
Sat 17/1008:55
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 27/4฿7,238
Wed 10/622:20
CNX
-
USM
1 stop8h 50m
Multiple Airlines
Wed 17/606:55
USM
-
CNX
1 stop4h 45m
Multiple Airlines
Deal found 26/4฿7,852
Fri 5/619:05
CNX
-
USM
1 stop12h 05m
Multiple Airlines
Sun 7/608:55
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 26/4฿7,885
Tue 9/622:30
CNX
-
USM
1 stop8h 40m
Multiple Airlines
Tue 16/608:55
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 25/4฿7,917
Sat 16/522:20
CNX
-
USM
1 stop8h 50m
Multiple Airlines
Thu 21/508:55
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 23/4฿8,014
Tue 12/522:20
CNX
-
USM
1 stop8h 50m
Multiple Airlines
Wed 20/508:55
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 23/4฿8,046
Thu 11/622:30
CNX
-
USM
1 stop8h 40m
Multiple Airlines
Thu 18/606:55
USM
-
CNX
1 stop8h 55m
Multiple Airlines
Deal found 27/4฿8,078

Find flight deals from Chiang Mai to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 April 2026.

Round-trip from

฿7,238

One-way from

฿5,203

Popular in

August

Cheapest in

June

Average price

฿14,347

Good one-way deal

฿9,256 or less
Bangkok Airways
  • Bangkok Airways
  • 10/10-17/10
  • 1 total stop
  • 12h 55m total
  • Chiang Mai to Ko Samui
Search Deals
Bangkok Airways
  • Bangkok Airways
  • 18/6
  • 1 total stop
  • 11h 10m total
  • Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (฿36,259 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿20,226 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from Chiang Mai to Ko Samui.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Chiang Mai 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 27 April 2026.
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 - USM

CNXUSM

Chiang Mai

Tue 9/6

22:30-07:10

1 stop8h 40m

Ko Samui

Tue 16/6

08:55-10:40

Nonstop1h 45m

฿7,917

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 7/6

21:30-10:35

1 stop13h 05m

Ko Samui

Sun 14/6

07:50-15:15

1 stop7h 25m

฿8,886

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 9/5

20:00-19:45

1 stop23h 45m

Ko Samui

Mon 11/5

08:55-10:40

Nonstop1h 45m

฿9,630

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 24/5

22:30-07:10

1 stop8h 40m

Ko Samui

Sun 31/5

06:55-20:50

1 stop13h 55m

฿9,726

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 22/5

15:45-21:35

1 stop5h 50m

Ko Samui

Fri 29/5

06:00-10:10

1 stop4h 10m

฿9,920

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 9/5

14:30-20:50

1 stop6h 20m

Ko Samui

Sun 10/5

08:55-10:40

Nonstop1h 45m

฿9,953
Fastest return journey

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 16/5

11:55-15:45

1 stop3h 50m

Ko Samui

Thu 21/5

08:55-10:40

Nonstop1h 45m

฿10,017

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 24/5

10:10-15:25

1 stop5h 15m

Ko Samui

Sun 31/5

08:55-10:40

Nonstop1h 45m

฿10,050

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 5/6

22:20-07:10

1 stop8h 50m

Ko Samui

Sun 7/6

19:00-15:50

2 stops20h 50m

฿10,340
Cheapest one-way

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 8/5

22:30-08:15

1 stop9h 45m

฿5,396

Flights are sorted by cheapest return flights first.

Deals found on 25/4

Showing 1-10 of 16 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
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 Chiang Mai to Ko Samui

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

Currently, June is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of ฿8,886). Flying from Chiang Mai to Ko Samui in August is currently the most expensive (average of ฿20,455). 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?

Find hourly flight availability from Chiang Mai 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 27 April 2026.

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?

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 27 April 2026.
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
127 reviews
Check prices

Food

7.3

Crew

8.6

Overall

8.1

Entertainment

6.3

Comfort

8.0

Boarding

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
127 reviews
Bangkok Airways
8.1
Very Good
127 reviews
Check prices

Food

7.3

Crew

8.6

Overall

8.1

Entertainment

6.3

Comfort

8.0

Boarding

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

Find useful and relevant information for your journey from Chiang Mai 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 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 6 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 3 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 10m. 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 ฿3,932 on this airline. You may be able to fly from Chiang Mai to Ko Samui for 71% 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: เตอร์กิชแอร์ไลน์ (95%), EVA Air (93%), Thai Airways (93%).

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

    The cheapest flight price from Chiang Mai to Ko Samui is ฿8,652. On average you can expect to pay ฿9,260. The most popular route, (Chiang Mai - Ko Samui), can usually be booked for ฿6,010.

  • 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, June is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of ฿8,886). Flying from Chiang Mai to Ko Samui in August is currently the most expensive (average of ฿20,455). 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

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Fly from Chiang Mai to Ko Samui on these airlines

Choose from the following airlines for your flight from Chiang Mai to Ko Samui. Flights are based on user searches made on Cheapflights and were last updated on 27 April 2026.
Bangkok Airways flights from Chiang Mai to Ko Samui

Top airline flying from Chiang Mai to Ko Samui

Discover the top airline that operate flights from Chiang Mai 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 27 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest฿3,932Average฿9,729FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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