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Cheap flights from Chiang Mai to Ko Samui from C$ 220

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 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
18 May — 25 May1
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 April 2026.

Wed 4/1110:10 a.m.
CNX
-
USM
1 stop6h 50m
Bangkok Airways
Wed 11/1112:15 p.m.
USM
-
CNX
1 stop6h 45m
Bangkok Airways
Deal found 13/4C$ 254
Sun 1/1112:10 p.m.
CNX
-
USM
1 stop4h 50m
Bangkok Airways
Sun 8/118:50 a.m.
USM
-
CNX
Nonstop1h 50m
Bangkok Airways
Deal found 13/4C$ 391
Sun 1/1112:10 p.m.
CNX
-
USM
1 stop4h 15m
Bangkok Airways
Wed 11/112:05 p.m.
USM
-
CNX
1 stop4h 55m
Bangkok Airways
Deal found 13/4C$ 398
Sat 7/117:45 p.m.
CNX
-
USM
1 stop12h 00m
Bangkok Airways
Fri 13/118:50 a.m.
USM
-
CNX
Nonstop1h 50m
Bangkok Airways
Deal found 13/4C$ 401
Sat 7/1112:10 p.m.
CNX
-
USM
1 stop4h 15m
Bangkok Airways
Sun 8/118:50 a.m.
USM
-
CNX
Nonstop1h 50m
Bangkok Airways
Deal found 13/4C$ 412
Thu 23/43:55 p.m.
CNX
-
USM
1 stop5h 40m
Multiple Airlines
Mon 27/48:55 a.m.
USM
-
CNX
Nonstop1h 45m
Multiple Airlines
Deal found 14/4C$ 416
Wed 22/48:00 p.m.
CNX
-
USM
1 stop23h 00m
Bangkok Airways
Fri 24/48:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 16/4C$ 432
Thu 23/42:30 p.m.
CNX
-
USM
1 stop4h 30m
Multiple Airlines
Sun 26/47:50 a.m.
USM
-
CNX
1 stop6h 00m
Multiple Airlines
Deal found 17/4C$ 443
Fri 17/48:00 p.m.
CNX
-
USM
1 stop14h 05m
Bangkok Airways
Sat 25/48:55 a.m.
USM
-
CNX
Nonstop1h 45m
Bangkok Airways
Deal found 16/4C$ 457
Sun 26/43:55 p.m.
CNX
-
USM
1 stop4h 35m
Multiple Airlines
Mon 11/56:00 a.m.
USM
-
CNX
1 stop4h 10m
Multiple Airlines
Deal found 15/4C$ 482
Wed 22/48:00 p.m.
CNX
-
USM
1 stop23h 00m
Bangkok Airways
Sun 26/47:55 p.m.
USM
-
CNX
1 stop13h 25m
Bangkok Airways
Deal found 16/4C$ 487

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 April 2026.

Round-trip from

C$ 398

One-way from

C$ 220

Popular in

August

Cheapest in

June

Average price

C$ 607
11/5-18/5
  • 11/5-18/5
  • 2 total stops
  • 9h 30m total
  • Chiang Mai to Ko Samui
Search Deals
Bangkok Airways
  • Bangkok Airways
  • 16/6
  • 1 total stop
  • 4h 40m total
  • Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 62 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 April 2026
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 April 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 11/5

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

1 stop5h 05m

Ko Samui

Mon 18/5

11:25 a.m.-3:50 p.m.

1 stop4h 25m

C$ 398

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 30/4

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

1 stop6h 00m

Ko Samui

Mon 4/5

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

Nonstop1h 45m

C$ 508
Quickest round-trip

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 21/7

10:30 a.m.-2:55 p.m.

1 stop4h 25m

Ko Samui

Wed 22/7

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

Nonstop1h 45m

C$ 560

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 2/10

2:35 p.m.-9:35 p.m.

1 stop7h 00m

Ko Samui

Sun 4/10

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

Nonstop1h 45m

C$ 599

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 18/5

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

1 stop5h 10m

Ko Samui

Wed 20/5

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

Nonstop1h 45m

C$ 599

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 4/8

7:00 a.m.-11:05 a.m.

1 stop4h 05m

Ko Samui

Tue 4/8

5:50 p.m.-10:50 p.m.

1 stop5h 00m

C$ 648

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 10/8

11:05 a.m.-2:55 p.m.

1 stop3h 50m

Ko Samui

Mon 10/8

6:55 p.m.-11:25 p.m.

1 stop4h 30m

C$ 662

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 28/7

9:35 a.m.-2:45 p.m.

1 stop5h 10m

Ko Samui

Tue 28/7

6:25 p.m.-11:25 p.m.

1 stop5h 00m

C$ 683
Cheapest one-way

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 16/6

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

1 stop4h 40m

C$ 220

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 12/6

2:35 p.m.-8:50 p.m.

1 stop6h 15m

C$ 230

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/4

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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$ 364). Flying from Chiang Mai to Ko Samui in August is currently the most expensive (average of C$ 866). 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 April 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 7h. 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 Turkish Airlines (95%), EVA Air (93%) or Thai Airways (93%) 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, June is the cheapest month in which you can book a flight from Chiang Mai to Ko Samui (average of C$ 364). Flying from Chiang Mai to Ko Samui in August is currently the most expensive (average of C$ 866). 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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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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