Cheap flights from Chiang Mai to Ko Samui from ฿5,652

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 13/3. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
26 Dec — 2 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 26 November 2025.

Round-trip from

฿7,008

One-way from

฿5,652

Popular in

August

Cheapest in

September

Average price

฿11,626
Bangkok Airways
  • Bangkok Airways
  • 14/3-28/3
  • 1 total stop
  • 10h 10m total
  • Chiang Mai to Ko Samui
Bangkok Airways
  • Bangkok Airways
  • 13/3
  • 1 total stop
  • 9h 10m total
  • Chiang Mai to Ko Samui
Highest demand for flights based on searches. 5% potential increase in price (฿24,636 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (฿9,790 potential savings vs. average return price).
Average for round-trip flights in November 2025

Find 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 26 November 2025.

Wed 10/1222:25CNX - USM
1 stop9h 20mMultiple Airlines
Sun 14/1208:50USM - CNX
Nonstop1h 50mMultiple Airlines
Deal found 25/11฿10,076
Thu 11/1210:10CNX - USM
1 stop6h 15mBangkok Airways
Sun 14/1208:50USM - CNX
Nonstop1h 50mBangkok Airways
Deal found 24/11฿10,173
Thu 11/1215:45CNX - USM
1 stop4h 40mMultiple Airlines
Sun 14/1208:50USM - CNX
Nonstop1h 50mMultiple Airlines
Deal found 25/11฿10,593
Thu 27/1120:50CNX - USM
1 stop10h 55mMultiple Airlines
Sun 30/1108:50USM - CNX
Nonstop1h 50mMultiple Airlines
Deal found 25/11฿11,852
Sat 6/1208:05CNX - USM
1 stop10h 50mMultiple Airlines
Sun 21/1219:00USM - CNX
1 stop15h 15mMultiple Airlines
Deal found 26/11฿12,111
Fri 12/1212:10CNX - USM
1 stop8h 15mBangkok Airways
Fri 19/1208:50USM - CNX
Nonstop1h 50mBangkok Airways
Deal found 25/11฿12,272

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 26 November 2025.
Use the filters below to find and compare flights from Chiang Mai to Ko Samui that are best for you.

Fly from

Chiang Mai

Fly to

Ko Samui

Route

Depart

Return

Price

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 9/3

22:25-07:10

1 stop8h 45m

Ko Samui

Sat 14/3

08:15-15:40

1 stop7h 25m

฿9,269

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 19/1

22:25-07:45

1 stop9h 20m

Ko Samui

Tue 27/1

08:50-10:40

Nonstop1h 50m

฿9,882

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 19/1

22:25-07:45

1 stop9h 20m

Ko Samui

Thu 29/1

08:50-10:40

Nonstop1h 50m

฿9,882

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 10/12

22:25-07:45

1 stop9h 20m

Ko Samui

Sun 14/12

08:50-10:40

Nonstop1h 50m

฿10,076

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 22/1

22:50-07:35

1 stop8h 45m

Ko Samui

Fri 30/1

08:50-10:40

Nonstop1h 50m

฿10,141

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 14/1

08:05-20:30

1 stop12h 25m

Ko Samui

Thu 22/1

08:50-10:40

Nonstop1h 50m

฿10,141

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 11/12

10:10-16:25

1 stop6h 15m

Ko Samui

Sun 14/12

08:50-10:40

Nonstop1h 50m

฿10,399

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 14/3

12:10-18:55

1 stop6h 45m

Ko Samui

Fri 27/3

07:00-11:20

1 stop4h 20m

฿10,496

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 18/1

13:10-18:30

1 stop5h 20m

Ko Samui

Tue 27/1

08:50-10:40

Nonstop1h 50m

฿10,884

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 18/1

13:10-18:30

1 stop5h 20m

Ko Samui

Thu 29/1

08:50-10:40

Nonstop1h 50m

฿10,884

Flights are sorted by cheapest return flights first.

Deals found on 24/11

Showing 1-10 of 22 results
1
2
3

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

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

Use this chart to determine the optimal time to book a return flight from Chiang Mai to Ko Samui. Price data was last updated on 21 November 2025.

To ensure you get the cheapest price possible for a flight from Chiang Mai to Ko Samui, you should look to book at least 34 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, April is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of ฿2,874). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of ฿7,783). 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 26 November 2025.

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 26 November 2025.
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.

Boarding

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

6.2

Overall

8.0

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.

Boarding

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

6.2

Overall

8.0

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.

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?

  • 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 6h 15m. 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 ฿7,826 on this airline. You may be able to fly from Chiang Mai to Ko Samui for 35% 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: Bangkok Airways (96%), EVA Air (92%), Thai Airways (92%).

  • 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, April is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of ฿2,874). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of ฿7,783). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 26 November 2025.

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 26 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest฿7,826Average฿9,924FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.