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Cheap flights from Chiang Mai to Ko Samui from C$ 233

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
18 Jul — 25 Jul1
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 18 June 2026.

Wed 16/911:55 a.m.
CNX
-
USM
1 stop5h 10m
Bangkok Airways
Wed 23/96:00 a.m.
USM
-
CNX
1 stop5h 15m
Bangkok Airways
Deal found 17/6C$ 233
Wed 16/92:30 p.m.
CNX
-
USM
1 stop6h 20m
Multiple Airlines
Thu 17/98:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 17/6C$ 313
Wed 16/910:30 p.m.
CNX
-
USM
1 stop8h 40m
Multiple Airlines
Wed 23/98:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 17/6C$ 321
Fri 16/101:55 p.m.
CNX
-
USM
1 stop4h 35m
Multiple Airlines
Wed 21/108:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 17/6C$ 326
Mon 7/98:00 p.m.
CNX
-
USM
1 stop11h 10m
Bangkok Airways
Tue 22/98:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 15/6C$ 417
Mon 7/98:00 p.m.
CNX
-
USM
1 stop14h 45m
Bangkok Airways
Mon 14/98:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 15/6C$ 418
Sun 1/1110:10 a.m.
CNX
-
USM
1 stop9h 40m
Bangkok Airways
Sat 7/118:50 a.m.
USM
-
CNX
Nonstop1h 50m
Bangkok Airways
Deal found 17/6C$ 446

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 18 June 2026.

Round-trip from

C$ 233

Popular in

December

Cheapest in

September

Average price

C$ 463

Good one-way deal

C$ 338 or less
Bangkok Airways
  • Bangkok Airways
  • 16/9-23/9
  • 2 total stops
  • 10h 25m total
  • Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a one-way flight from Chiang Mai to Ko Samui.
Search Deals

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 18 June 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

Wed 16/9

2:30 p.m.-8:50 p.m.

1 stop6h 20m

Ko Samui

Thu 17/9

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

Nonstop1h 45m

C$ 313

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 16/9

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

1 stop8h 40m

Ko Samui

Wed 23/9

7:15 p.m.-11:25 p.m.

1 stop4h 10m

C$ 394

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 7/9

8:00 p.m.-7:10 a.m.

1 stop11h 10m

Ko Samui

Tue 22/9

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

Nonstop1h 45m

C$ 417

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 15/12

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

1 stop11h 25m

Ko Samui

Tue 22/12

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

Nonstop1h 50m

C$ 418

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 7/9

8:00 p.m.-7:10 a.m.

1 stop11h 10m

Ko Samui

Sat 19/9

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

Nonstop1h 45m

C$ 418
Quickest round-trip

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 16/9

11:35 a.m.-1:20 p.m.

Nonstop1h 45m

Ko Samui

Wed 23/9

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

Nonstop1h 45m

C$ 541

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 31/7

7:00 a.m.-8:45 p.m.

1 stop13h 45m

Ko Samui

Fri 7/8

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

Nonstop1h 45m

C$ 575

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 12/7

7:00 a.m.-8:45 p.m.

1 stop13h 45m

Ko Samui

Sun 19/7

8:35 p.m.-10:10 a.m.

1 stop13h 35m

C$ 579

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 12/9

11:55 a.m.-5:05 p.m.

1 stop5h 10m

Ko Samui

Tue 15/9

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

Nonstop1h 45m

C$ 603

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 14/7

3:35 p.m.-7:45 p.m.

1 stop4h 10m

Ko Samui

Sat 18/7

5:25 p.m.-10:00 p.m.

1 stop4h 35m

C$ 610

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/6

Showing 1-10 of 18 resultsSorted by cheapest first
1
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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

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

Currently, September is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 383). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of C$ 819). 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 18 June 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.

How much does it cost to fly round-trip from Chiang Mai to Ko Samui?

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 11h 10m. 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 (95%), Thai Airways (95%) or Etihad Airways (95%) when booking your flight. These represent the most reliable airlines when flying from Chiang Mai to Ko Samui.

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

    On average you can expect to pay C$ 340 for a flight from Chiang Mai to Ko Samui. The cheapest flight overall is C$ 338 while the most popular route, (Chiang Mai - Ko Samui) is currently priced at C$ 696.

  • 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, September is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 383). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of C$ 819). 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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