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Cheap flights from Chiang Mai to Ko Samui from C$ 247

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
21 Apr — 28 Apr1
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 22 March 2026.

Mon 20/411:55 a.m.
CNX
-
USM
1 stop4h 40m
Bangkok Airways
Mon 27/48:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 21/3C$ 316
Sat 9/53:30 p.m.
CNX
-
USM
1 stop6h 05m
Multiple Airlines
Sun 10/58:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 20/3C$ 321
Sat 9/53:30 p.m.
CNX
-
USM
1 stop6h 05m
Multiple Airlines
Sat 16/58:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 21/3C$ 324
Thu 7/510:30 p.m.
CNX
-
USM
1 stop8h 40m
Multiple Airlines
Sun 17/57:50 a.m.
USM
-
CNX
1 stop8h 55m
Multiple Airlines
Deal found 18/3C$ 346
Thu 21/57:00 a.m.
CNX
-
USM
1 stop4h 05m
Multiple Airlines
Wed 27/57:50 a.m.
USM
-
CNX
1 stop5h 50m
Multiple Airlines
Deal found 21/3C$ 350
Wed 13/510:30 p.m.
CNX
-
USM
1 stop8h 40m
Multiple Airlines
Fri 22/57:50 a.m.
USM
-
CNX
1 stop5h 50m
Multiple Airlines
Deal found 18/3C$ 361
Sat 16/53:35 p.m.
CNX
-
USM
1 stop4h 10m
Multiple Airlines
Sun 17/57:50 a.m.
USM
-
CNX
1 stop5h 50m
Multiple Airlines
Deal found 21/3C$ 364
Sat 18/410:30 p.m.
CNX
-
USM
1 stop8h 40m
Multiple Airlines
Sat 25/48:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 19/3C$ 370

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 22 March 2026.

Round-trip from

C$ 316

One-way from

C$ 247

Popular in

August

Cheapest in

June

Average price

C$ 523
Bangkok Airways
  • Bangkok Airways
  • 20/4-27/4
  • 1 total stop
  • 6h 25m total
  • Chiang Mai to Ko Samui
Search Deals
Bangkok Airways
  • Bangkok Airways
  • 19/4
  • 1 total stop
  • 4h 25m total
  • Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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Cheapflights Fare Finder

 
Customize 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 629,999 searches. Data last updated 22 March 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 round-trip

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 9/5

3:30 p.m.-9:35 p.m.

1 stop6h 05m

Ko Samui

Sat 16/5

8:55 a.m.-10:40 a.m.

Nonstop1h 45m

C$ 324

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 7/5

10:30 p.m.-7:10 a.m.

1 stop8h 40m

Ko Samui

Sun 17/5

7:50 a.m.-4:45 p.m.

1 stop8h 55m

C$ 346

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 21/5

7:00 a.m.-11:05 a.m.

1 stop4h 05m

Ko Samui

Wed 27/5

7:50 a.m.-1:40 p.m.

1 stop5h 50m

C$ 350

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 13/5

10:30 p.m.-7:10 a.m.

1 stop8h 40m

Ko Samui

Fri 22/5

7:50 a.m.-1:40 p.m.

1 stop5h 50m

C$ 361
Quickest round-trip

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 16/5

11:50 a.m.-4:50 p.m.

1 stop5h 00m

Ko Samui

Sun 17/5

8:55 a.m.-10:40 a.m.

Nonstop1h 45m

C$ 364

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 9/5

2:25 p.m.-8:50 p.m.

1 stop6h 25m

Ko Samui

Sun 10/5

6:00 a.m.-1:40 p.m.

1 stop7h 40m

C$ 366

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 18/4

10:30 p.m.-7:10 a.m.

1 stop8h 40m

Ko Samui

Sat 25/4

8:55 a.m.-10:40 a.m.

Nonstop1h 45m

C$ 370

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 4/7

11:55 a.m.-8:50 p.m.

1 stop8h 55m

Ko Samui

Sun 5/7

8:55 a.m.-10:40 a.m.

Nonstop1h 45m

C$ 434

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 28/6

8:00 p.m.-8:50 p.m.

1 stop24h 50m

Ko Samui

Fri 10/7

8:55 a.m.-10:40 a.m.

Nonstop1h 45m

C$ 460

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 17/4

2:10 p.m.-7:00 p.m.

1 stop4h 50m

Ko Samui

Fri 24/4

3:25 p.m.-8:20 p.m.

1 stop4h 55m

C$ 468

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/3

Showing 1-10 of 18 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 round-trip 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, August is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 122). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of C$ 229). 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 22 March 2026.

When flying from Chiang Mai to Ko Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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?

    This flight path from Chiang Mai to Ko Samui was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Consider EVA Air (92%), Thai Airways (92%) or Etihad Airways (92%) when booking your flight. These represent the most reliable airlines when flying from Chiang Mai to Ko Samui.

  • 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 vacation 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, August is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 122). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of C$ 229). 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

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

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Chiang Mai to Ko Samui flexibly with Cheapflights today.

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