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Cheap flights from Chiang Mai to Ko Samui from £104

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
20 Nov — 27 Nov1
1 adult
1 adult, Economy

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 21 October 2025.

Round-trip from

£171

One-way from

£104

Popular in

August

Cheapest in

September

Average price

£272

Good one-way deal

£216 or less
Bangkok Airways
  • Bangkok Airways
  • 9/2-12/2
  • 1 total stop
  • 11h 20m total
  • Chiang Mai to Ko Samui
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1/11
  • 1/11
  • 1 total stop
  • 5h 20m total
  • Chiang Mai to Ko Samui
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Highest demand for flights based on searches. 6% potential increase in price (£13 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Price to beat on a one-way flight from Chiang Mai to Ko Samui.
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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 21 October 2025.

Mon 17/1122:25CNX - USM
1 stop9h 20mMultiple Airlines
Tue 25/1108:15USM - CNX
1 stop7h 25mMultiple Airlines
Deal found 20/10£184
Wed 3/1214:30CNX - USM
1 stop5h 55mMultiple Airlines
Sat 6/1208:50USM - CNX
Nonstop1h 50mMultiple Airlines
Deal found 19/10£201
Fri 24/1022:25CNX - USM
1 stop9h 50mMultiple Airlines
Mon 10/1108:50USM - CNX
Nonstop1h 50mMultiple Airlines
Deal found 20/10£249
Mon 27/1010:10CNX - USM
1 stop5h 30mBangkok Airways
Thu 30/1008:50USM - CNX
Nonstop1h 50mBangkok Airways
Deal found 20/10£256
Wed 29/1011:30CNX - USM
Nonstop1h 45mBangkok Airways
Thu 30/1008:50USM - CNX
Nonstop1h 50mBangkok Airways
Deal found 19/10£260
Fri 24/1011:55CNX - USM
1 stop5h 10mBangkok Airways
Fri 31/1008:50USM - CNX
Nonstop1h 50mBangkok Airways
Deal found 20/10£270
Wed 3/1215:15CNX - USM
1 stop6h 05mMultiple Airlines
Wed 10/1211:10USM - CNX
1 stop4h 30mMultiple Airlines
Deal found 19/10£274
Mon 27/1022:25CNX - USM
1 stop9h 05mMultiple Airlines
Thu 30/1017:40USM - CNX
1 stop4h 15mMultiple Airlines
Deal found 20/10£276
Wed 3/1211:30CNX - USM
Nonstop1h 45mBangkok Airways
Sat 6/1208:50USM - CNX
Nonstop1h 50mBangkok Airways
Deal found 19/10£276
Tue 28/1011:30CNX - USM
Nonstop1h 45mBangkok Airways
Fri 31/1008:50USM - CNX
Nonstop1h 50mBangkok Airways
Deal found 19/10£288

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 858,174 searches. Data last updated 21 October 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 17/11

22:25-07:45

1 stop9h 20m

Ko Samui

Tue 25/11

08:15-15:40

1 stop7h 25m

£184

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 30/3

10:10-21:35

1 stop11h 25m

Ko Samui

Sat 16/5

08:00-13:45

1 stop5h 45m

£209

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 26/3

19:45-07:10

1 stop11h 25m

Ko Samui

Thu 14/5

13:50-19:10

1 stop5h 20m

£209

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 28/3

19:45-07:20

1 stop11h 35m

Ko Samui

Thu 14/5

08:00-13:45

1 stop5h 45m

£209

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 31/3

20:00-07:20

1 stop11h 20m

Ko Samui

Sun 17/5

11:45-19:10

1 stop7h 25m

£209

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 27/3

19:45-07:10

1 stop11h 25m

Ko Samui

Wed 20/5

09:15-13:45

1 stop4h 30m

£209

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 26/3

19:45-07:10

1 stop11h 25m

Ko Samui

Fri 15/5

14:35-19:10

1 stop4h 35m

£209

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 1/4

20:00-07:20

1 stop11h 20m

Ko Samui

Sat 16/5

08:45-13:45

1 stop5h 00m

£209

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 26/3

19:45-07:10

1 stop11h 25m

Ko Samui

Sat 16/5

13:50-19:10

1 stop5h 20m

£209

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 27/3

19:45-07:10

1 stop11h 25m

Ko Samui

Fri 15/5

07:00-11:15

1 stop4h 15m

£209

Flights are sorted by cheapest return flights first.

Deals found on 20/10

Showing 1-10 of 22 results
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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 17 October 2025.

Booking 34 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chiang Mai to Ko Samui. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 £66). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of £163). 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 21 October 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.

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.

  • 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 641 mi.

  • What are the most reliable airlines from Chiang Mai to Ko Samui?

    No one likes to see their flight delayed. When booking a flight from Chiang Mai to Ko Samui consider choosing Bangkok Airways (97%), EVA Air (93%) or Qatar Airways (93%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from Chiang Mai to Ko Samui? While on average our users pay £218, our data indicates the cheapest price to be £201. The most popular route (Chiang Mai - Ko Samui), is priced around £367.

  • 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 £66). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of £163). 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

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Alternative routes for Chiang Mai to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
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Udon Thani to Suvarnabhumi 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?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ko Samui from Chiang Mai today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Chiang Mai to Ko Samui?

Cheapflights helps you find that perfect flight to Ko Samui from Chiang Mai by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

Yes, Cheapflights offers price alerts on Chiang Mai to Ko Samui flights so you can book your travel at the perfect time. Price Alerts can be enabled 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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