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Cheap flights from Chiang Mai to Ko Samui from C$ 219

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
5 Jun — 12 Jun1
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 6 May 2026.

Sat 12/910:10 a.m.
CNX
-
USM
1 stop5h 00m
Bangkok Airways
Sun 20/98:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 1/5C$ 357
Sat 12/910:10 a.m.
CNX
-
USM
1 stop5h 15m
Bangkok Airways
Wed 23/96:00 a.m.
USM
-
CNX
1 stop5h 15m
Bangkok Airways
Deal found 1/5C$ 364
Mon 15/610:20 p.m.
CNX
-
USM
1 stop8h 50m
Multiple Airlines
Mon 22/68:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 1/5C$ 368
Fri 8/58:15 a.m.
CNX
-
USM
1 stop11h 30m
Multiple Airlines
Sat 16/58:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 3/5C$ 399
Sat 16/52:30 p.m.
CNX
-
USM
1 stop6h 20m
Multiple Airlines
Sun 17/58:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 1/5C$ 417
Fri 19/610:55 a.m.
CNX
-
USM
1 stop6h 00m
Multiple Airlines
Fri 26/68:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 5/5C$ 421
Thu 7/58:00 p.m.
CNX
-
USM
1 stop23h 45m
Bangkok Airways
Thu 14/58:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 3/5C$ 422
Thu 7/58:00 p.m.
CNX
-
USM
1 stop23h 45m
Bangkok Airways
Tue 12/58:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 3/5C$ 426
Sat 9/51:10 p.m.
CNX
-
USM
1 stop5h 15m
Multiple Airlines
Tue 12/58:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 3/5C$ 437
Sun 24/511:55 a.m.
CNX
-
USM
1 stop5h 10m
Bangkok Airways
Sun 31/58:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 3/5C$ 445
Wed 6/59:35 p.m.
CNX
-
USM
1 stop12h 10m
Bangkok Airways
Wed 13/58:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 3/5C$ 448

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 6 May 2026.

Round-trip from

C$ 357

One-way from

C$ 219

Popular in

August

Cheapest in

June

Average price

C$ 554

Good one-way deal

C$ 326 or less
Bangkok Airways
  • Bangkok Airways
  • 14/9-20/9
  • 1 total stop
  • 8h 10m total
  • Chiang Mai to Ko Samui
Search Deals
4/6
  • 4/6
  • 1 total stop
  • 6h 00m total
  • Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 64 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 6 May 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

Mon 15/6

10:20 p.m.-7:10 a.m.

1 stop8h 50m

Ko Samui

Mon 22/6

6:55 a.m.-11:40 a.m.

1 stop4h 45m

C$ 398

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 8/5

8:15 a.m.-7:45 p.m.

1 stop11h 30m

Ko Samui

Sat 16/5

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

Nonstop1h 45m

C$ 399

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 16/5

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

1 stop6h 20m

Ko Samui

Sun 17/5

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

Nonstop1h 45m

C$ 417

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 19/6

10:55 a.m.-4:55 p.m.

1 stop6h 00m

Ko Samui

Fri 26/6

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

Nonstop1h 45m

C$ 421

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 24/5

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

1 stop5h 10m

Ko Samui

Sun 31/5

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

Nonstop1h 45m

C$ 445

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 31/5

10:55 a.m.-6:00 p.m.

1 stop7h 05m

Ko Samui

Sun 7/6

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

Nonstop1h 45m

C$ 463

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 8/5

8:15 a.m.-7:45 p.m.

1 stop11h 30m

Ko Samui

Thu 14/5

11:10 a.m.-4:35 p.m.

1 stop5h 25m

C$ 478

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 8/5

11:55 a.m.-7:45 p.m.

1 stop7h 50m

Ko Samui

Sat 16/5

7:50 a.m.-9:20 a.m.

1 stop25h 30m

C$ 485
Quickest round-trip

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 15/6

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

Nonstop1h 45m

Ko Samui

Mon 22/6

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

Nonstop1h 45m

C$ 524

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 12/5

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

1 stop5h 00m

Ko Samui

Tue 12/5

7:10 p.m.-11:25 p.m.

1 stop4h 15m

C$ 554

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Showing 1-10 of 17 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, June is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 374). Flying from Chiang Mai to Ko Samui in August is currently the most expensive (average of C$ 862). 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 6 May 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.

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

    Consider Turkish Airlines (92%), 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.

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

    On average you can expect to pay C$ 326 for a flight from Chiang Mai to Ko Samui. The cheapest flight overall is C$ 295 while the most popular route, (Chiang Mai - Ko Samui) is currently priced at C$ 671.

  • 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, June is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 374). Flying from Chiang Mai to Ko Samui in August is currently the most expensive (average of C$ 862). 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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