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Cheap flights from Chiang Mai to Ko Samui from C$ 258

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
19 Feb — 26 Feb1
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 20 January 2026.

Mon 8/611:55 a.m.
CNX
-
USM
1 stop4h 40m
Bangkok Airways
Fri 12/68:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 20/1C$ 258
Sat 19/911:55 a.m.
CNX
-
USM
1 stop4h 40m
Bangkok Airways
Fri 25/99:15 a.m.
USM
-
CNX
1 stop4h 30m
Bangkok Airways
Deal found 20/1C$ 382
Thu 24/98:00 p.m.
CNX
-
USM
1 stop11h 10m
Bangkok Airways
Sat 26/98:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 20/1C$ 398
Thu 24/98:00 p.m.
CNX
-
USM
1 stop11h 10m
Bangkok Airways
Fri 25/92:00 p.m.
USM
-
CNX
1 stop5h 10m
Bangkok Airways
Deal found 20/1C$ 405
Thu 24/98:00 p.m.
CNX
-
USM
1 stop11h 10m
Bangkok Airways
Sun 27/98:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 20/1C$ 425
Thu 12/32:20 p.m.
CNX
-
USM
1 stop7h 00m
Multiple Airlines
Sun 15/38:15 a.m.
USM
-
CNX
1 stop7h 25m
Multiple Airlines
Deal found 19/1C$ 446
Sun 8/312:10 p.m.
CNX
-
USM
1 stop4h 50m
Bangkok Airways
Wed 18/38:50 a.m.
USM
-
CNX
Nonstop1h 50m
Bangkok Airways
Deal found 20/1C$ 468
Wed 11/32:20 p.m.
CNX
-
USM
1 stop6h 05m
Multiple Airlines
Sun 15/38:15 a.m.
USM
-
CNX
1 stop7h 25m
Multiple Airlines
Deal found 18/1C$ 469
Mon 1/610:30 p.m.
CNX
-
USM
1 stop8h 40m
Multiple Airlines
Thu 4/66:00 a.m.
USM
-
CNX
1 stop5h 15m
Multiple Airlines
Deal found 20/1C$ 471
Sun 3/510:10 a.m.
CNX
-
USM
1 stop6h 55m
Bangkok Airways
Mon 4/56:00 a.m.
USM
-
CNX
1 stop7h 45m
Bangkok Airways
Deal found 20/1C$ 512
Thu 24/911:55 a.m.
CNX
-
USM
1 stop3h 50m
Bangkok Airways
Thu 24/99:00 p.m.
USM
-
CNX
1 stop12h 20m
Bangkok Airways
Deal found 20/1C$ 546

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 20 January 2026.

Round-trip from

C$ 258

Popular in

December

Cheapest in

September

Average price

C$ 632
Bangkok Airways
  • Bangkok Airways
  • 8/6-12/6
  • 1 total stop
  • 6h 25m total
  • Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 20 January 2026.
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 8/6

11:55 a.m.-4:35 p.m.

1 stop4h 40m

Ko Samui

Fri 12/6

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

Nonstop1h 45m

C$ 258

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 12/3

2:20 p.m.-9:20 p.m.

1 stop7h 00m

Ko Samui

Sun 15/3

8:15 a.m.-3:40 p.m.

1 stop7h 25m

C$ 446

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 3/5

2:35 p.m.-8:30 p.m.

1 stop5h 55m

Ko Samui

Mon 4/5

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

Nonstop1h 45m

C$ 446

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 8/3

12:10 p.m.-5:00 p.m.

1 stop4h 50m

Ko Samui

Wed 18/3

8:50 a.m.-10:40 a.m.

Nonstop1h 50m

C$ 468

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 11/3

2:20 p.m.-8:25 p.m.

1 stop6h 05m

Ko Samui

Sun 15/3

8:15 a.m.-3:40 p.m.

1 stop7h 25m

C$ 469

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 1/6

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

1 stop8h 40m

Ko Samui

Thu 4/6

6:00 a.m.-11:15 a.m.

1 stop5h 15m

C$ 471

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 3/2

10:25 p.m.-7:35 a.m.

1 stop9h 10m

Ko Samui

Sat 7/2

8:15 a.m.-3:40 p.m.

1 stop7h 25m

C$ 576

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 21/2

10:25 p.m.-7:45 a.m.

1 stop9h 20m

Ko Samui

Tue 24/2

9:20 a.m.-3:40 p.m.

1 stop6h 20m

C$ 576

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 17/2

9:40 p.m.-7:50 a.m.

1 stop10h 10m

Ko Samui

Fri 27/2

8:50 a.m.-10:40 a.m.

Nonstop1h 50m

C$ 579

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 5/2

9:40 p.m.-7:35 a.m.

1 stop9h 55m

C$ 286

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/1

Showing 1-10 of 19 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 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

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 round-trip flight from Chiang Mai to Ko Samui. Price data was last updated on 16 January 2026.

The best time to book flights from Chiang Mai to Ko Samui is 34 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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$ 124). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of C$ 261). 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 20 January 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.

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

    There are many flights that can get you from Chiang Mai to Ko Samui in 4h 40m. Fly via Bangkok Airways to get the fastest option. Chiang Mai and Ko Samui are separated by a distance of 1032 km.

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

    Consider EVA Air (89%), Thai Airways (89%) or Etihad Airways (89%) 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$ 124). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of C$ 261). 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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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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