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Cheap flights from Chiang Mai to Ko Samui from C$ 243

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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
20 Dec — 27 Dec1
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 20 November 2025.

Round-trip from

C$ 364

One-way from

C$ 243

Popular in

August

Cheapest in

September

Average price

C$ 506
Bangkok Airways
  • Bangkok Airways
  • 14/5-18/5
  • 2 total stops
  • 23h 45m total
  • Chiang Mai to Ko Samui
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6/1
  • 6/1
  • 1 total stop
  • 9h 55m total
  • Chiang Mai to Ko Samui
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Highest demand for flights based on searches. 5% potential increase in price (C$ 45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 19 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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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 20 November 2025.

Thu 27/1110:25 p.m.CNX - USM
1 stop9h 20mMultiple Airlines
Mon 1/128:15 a.m.USM - CNX
1 stop7h 25mMultiple Airlines
Deal found 19/11C$ 468
Fri 28/1110:25 p.m.CNX - USM
1 stop9h 20mMultiple Airlines
Tue 2/128:15 a.m.USM - CNX
1 stop7h 25mMultiple Airlines
Deal found 19/11C$ 471
Mon 24/1110:25 p.m.CNX - USM
1 stop9h 20mMultiple Airlines
Thu 27/118:15 a.m.USM - CNX
1 stop7h 25mMultiple Airlines
Deal found 18/11C$ 494
Thu 27/1110:25 p.m.CNX - USM
1 stop9h 20mMultiple Airlines
Thu 4/128:15 a.m.USM - CNX
1 stop7h 25mMultiple Airlines
Deal found 20/11C$ 516
Thu 4/1210:25 p.m.CNX - USM
1 stop9h 20mMultiple Airlines
Mon 8/129:20 a.m.USM - CNX
1 stop6h 20mMultiple Airlines
Deal found 19/11C$ 537
Fri 19/1210:25 p.m.CNX - USM
1 stop9h 05mMultiple Airlines
Fri 26/127:45 a.m.USM - CNX
1 stop9h 00mMultiple Airlines
Deal found 19/11C$ 643
Mon 22/123:15 p.m.CNX - USM
1 stop6h 05mMultiple Airlines
Sat 27/128:15 a.m.USM - CNX
1 stop7h 25mMultiple Airlines
Deal found 19/11C$ 718

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 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

Thu 14/5

8:00 p.m.-6:00 p.m.

2 stops22h 00m

Ko Samui

Mon 18/5

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

Nonstop1h 45m

C$ 364

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 20/1

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

1 stop9h 55m

Ko Samui

Mon 26/1

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

Nonstop1h 50m

C$ 425

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 20/1

9:40 p.m.-8:05 a.m.

1 stop10h 25m

Ko Samui

Thu 29/1

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

Nonstop1h 50m

C$ 425

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 20/1

9:40 p.m.-8:05 a.m.

1 stop10h 25m

Ko Samui

Wed 28/1

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

Nonstop1h 50m

C$ 425

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 21/1

9:40 p.m.-8:05 a.m.

1 stop10h 25m

Ko Samui

Wed 28/1

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

Nonstop1h 50m

C$ 450

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 21/1

9:40 p.m.-7:30 a.m.

1 stop9h 50m

Ko Samui

Sat 24/1

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

Nonstop1h 50m

C$ 450

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 21/1

9:40 p.m.-8:05 a.m.

1 stop10h 25m

Ko Samui

Thu 29/1

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

Nonstop1h 50m

C$ 450

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 22/1

9:40 p.m.-8:10 a.m.

1 stop10h 30m

Ko Samui

Wed 28/1

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

Nonstop1h 50m

C$ 457

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 18/1

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

1 stop21h 35m

Ko Samui

Wed 28/1

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

Nonstop1h 50m

C$ 463

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 11/1

9:40 p.m.-7:45 a.m.

1 stop10h 05m

Ko Samui

Thu 29/1

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

Nonstop1h 50m

C$ 484

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/11

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 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 14 November 2025.

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, April is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 125). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of C$ 339). 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 November 2025.

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 22h. 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 Bangkok Airways (96%), EVA Air (92%) or Thai 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, April is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 125). Flying from Chiang Mai to Ko Samui in January is currently the most expensive (average of C$ 339). 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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