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Cheap flights from Chiang Mai to Ko Samui from C$ 242

CNX — USM
18 Oct — 25 Oct1
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

Thu 29/106:30 a.m. -
1 stop8h 15m
Sun 1/118:50 a.m. -
Nonstop1h 50m
Deal found 16/9C$ 297
Thu 29/1011:30 a.m. -
Nonstop1h 45m
Sun 1/118:50 a.m. -
Nonstop1h 50m
Deal found 16/9C$ 337
Thu 15/103:45 p.m. -
1 stop5h 05m
Tue 20/103:30 p.m. -
1 stop4h 55m
Deal found 16/9C$ 364
Thu 15/102:30 p.m. -
1 stop6h 20m
Mon 19/106:00 a.m. -
1 stop5h 20m
Deal found 16/9C$ 379
Sat 3/1010:30 p.m. -
1 stop8h 40m
Sat 17/106:55 p.m. -
1 stop4h 30m
Deal found 15/9C$ 404
Mon 12/109:05 p.m. -
1 stop10h 05m
Mon 19/106:00 a.m. -
1 stop9h 15m
Deal found 14/9C$ 407
Sat 17/1010:30 p.m. -
1 stop8h 40m
Sat 24/107:50 a.m. -
1 stop7h 25m
Deal found 17/9C$ 428
Wed 28/103:30 p.m. -
1 stop4h 20m
Fri 30/108:15 a.m. -
1 stop7h 25m
Deal found 17/9C$ 430
Wed 7/1010:30 p.m. -
1 stop8h 40m
Sat 10/105:35 p.m. -
1 stop4h 25m
Deal found 14/9C$ 474
Fri 16/1010:10 a.m. -
1 stop6h 20m
Fri 16/107:15 p.m. -
1 stop14h 05m
Deal found 14/9C$ 564

Find flight deals from Chiang Mai to Ko Samui

Round-trip from

C$ 297

One-way from

C$ 242

Popular in

December

Cheapest in

September

Average price

C$ 241
Bangkok Airways
  • Bangkok Airways
  • 29/10-1/11
  • 1 total stop
  • 10h 05m total
  • Chiang Mai to Ko Samui
Search Deals
28/10-31/12
  • 28/10-31/12
  • 2 total stops
  • 10h 25m total
  • Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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 Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Thu 7/1

10:30 p.m.-7:45 a.m.

1 stop9h 15m

Ko Samui

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 264

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Sat 24/10

8:00 p.m.-7:35 a.m.

1 stop11h 35m

Ko Samui

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 266

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 26/2

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

1 stop6h 50m

Ko Samui

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 277

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Thu 29/10

6:30 a.m.-2:45 p.m.

1 stop8h 15m

Ko Samui

Sun 1/11

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

Nonstop1h 50m

C$ 297

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Sun 25/10

12:10 p.m.-8:25 p.m.

1 stop8h 15m

Ko Samui

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 302
Quickest round-trip

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Sun 1/11

11:30 a.m.-1:15 p.m.

Nonstop1h 45m

Ko Samui

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 305

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Thu 24/12

10:30 p.m.-7:45 a.m.

1 stop9h 15m

Ko Samui

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 319

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Sat 31/10

11:30 a.m.-1:15 p.m.

Nonstop1h 45m

Ko Samui

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 330

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Mon 26/10

7:45 p.m.-5:30 p.m.

2 stops21h 45m

Ko Samui

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 346

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Thu 15/10

3:45 p.m.-8:50 p.m.

1 stop5h 05m

Ko Samui

Tue 20/10

3:30 p.m.-8:25 p.m.

1 stop4h 55m

C$ 364

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/9

Showing 1-10 of 17 resultsSorted by cheapest first
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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

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$ 241). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of C$ 812). 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?

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?

Airfare is typical for this route at the moment.

Chiang Mai to Ko Samui flights typically cost between C$ 236 and C$ 621 in October.
The cheapest round-trip price found within the last 5 days was C$ 297 on Multiple Airlines (29 Oct-1 Nov).

Related info for your journey

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

    Consider EVA Air (83%), Thai Airways (83%) or Etihad Airways (83%) 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, September is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 241). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of C$ 812). 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

Browse thousands of different options on Cheapflights for your next trip

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