What day of the week experiences the fewest flight delays on this route?

Sunday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

How often are flights from Chiang Mai to Ko Samui delayed?

About 6% of weekly flights between Chiang Mai and Ko Samui have experienced delays in the past year, with the average delay time being 115 minutes.

What is the most punctual flight time for Chiang Mai to Ko Samui flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

Which airline has the best punctuality record on Chiang Mai to Ko Samui flights?

Over the past year, Bangkok Airways has had the lowest number of delays on this route, with just 6% of flights being delayed.

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.

Weekly flight availability from Chiang Mai to Ko Samui

The most flights from CNX to USM are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 mm per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

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

On average you can expect to pay C$ 393 for a flight from Chiang Mai to Ko Samui. The cheapest flight overall is C$ 384 while the most popular route, (Chiang Mai - Ko Samui) is currently priced at C$ 688.

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

Consider EVA Air (88%), Thai Airways (88%) or Etihad Airways (88%) 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.

C$ 221+ Cheap Flights from Chiang Mai to Ko Samui

Cheap flight deals from Chiang Mai to Ko Samui

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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 30 October 2026.

Fri 6/1110:10 a.m. -

1 stop8h 00m

Sun 8/118:50 a.m. -

Nonstop1h 50m

Deal found 28/10C$ 369

Thu 5/117:45 p.m. -

2 stops23h 50m

Mon 9/1111:40 a.m. -

2 stops23h 40m

Deal found 29/10C$ 3,898

Find flight deals from Chiang Mai to Ko Samui

Round-trip from	C$ 327
One-way from	C$ 221
Popular in	December
Cheapest in	September
Average price	C$ 433
Good one-way deal	C$ 389 or less

Bangkok Airways
23/4-6/5
1 total stop
5h 40m total
Chiang Mai to Ko Samui

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Bangkok Airways
11/12-31/12
1 total stop
8h 05m total
Chiang Mai to Ko Samui

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (C$ 98 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease (C$ 35 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Price to beat on a one-way flight from Chiang Mai to Ko Samui.

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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

Sat 21/11

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

1 stop11h 50m

Ko Samui

Wed 31/12

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

Nonstop0h 00m

C$ 226

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Mon 1/3

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$ 246

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Wed 27/1

7:45 p.m.-8:05 a.m.

1 stop12h 20m

Ko Samui

Wed 31/12

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

Nonstop0h 00m

C$ 268

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 15/1

12:10 p.m.-6:15 p.m.

1 stop6h 05m

Ko Samui

Wed 31/12

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

Nonstop0h 00m

C$ 271

Quickest round-trip

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Sat 24/4

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

Nonstop1h 45m

Ko Samui

Wed 31/12

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

Nonstop0h 00m

C$ 274

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Thu 14/1

10:10 a.m.-5:40 p.m.

1 stop7h 30m

Ko Samui

Wed 31/12

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

Nonstop0h 00m

C$ 296

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 8/1

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$ 296

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Tue 8/12

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$ 323

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Tue 20/4

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

1 stop11h 10m

Ko Samui

Fri 7/5

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

Nonstop1h 45m

C$ 399

Chiang MaiKo Samui

CNX Chiang Mai - USM Ko Samui

CNXUSM

Chiang Mai

Fri 26/2

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

1 stop11h 25m

Ko Samui

Tue 16/3

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

Nonstop1h 50m

C$ 426

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Showing 1-10 of 17 resultsSorted by cheapest first

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.

CNX-USM

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

Prices

Airlines

Delays

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$ 240). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of C$ 810). 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.

Related info for your journey

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 (88%), Thai Airways (88%) or Etihad Airways (88%) 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$ 393 for a flight from Chiang Mai to Ko Samui. The cheapest flight overall is C$ 384 while the most popular route, (Chiang Mai - Ko Samui) is currently priced at C$ 688.
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$ 240). Flying from Chiang Mai to Ko Samui in December is currently the most expensive (average of C$ 810). 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.

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When you search for this flight from Chiang Mai to Ko Samui, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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Cheap flights from Chiang Mai to Ko Samui from C$ 221

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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Chiang Mai to Ko Samui

Cheapest flights from Chiang Mai to Ko SamuiExplore 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 30 October 2026.

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 30 October 2026.

Best flights from Chiang Mai to Ko SamuiDiscover carefully curated flight deals from Chiang Mai to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from Chiang Mai to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from Chiang Mai to Ko SamuiExplore direct flight options from Chiang Mai to Ko Samui based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Explore direct flight options from Chiang Mai to Ko Samui based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from Chiang Mai to Ko SamuiDiscover last-minute flight deals from Chiang Mai to Ko Samui. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Chiang Mai to Ko Samui. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Chiang Mai to Ko SamuiSearch for one-way flight options from Chiang Mai to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Search for one-way flight options from Chiang Mai to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

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Use the filters below to find and compare flights from Chiang Mai to Ko Samui that are best for you.

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.

Cheapflights Insights

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

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.

Weekly flight availability from Chiang Mai to Ko Samui

The most flights from CNX to USM are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

How often are flights from Chiang Mai to Ko Samui delayed?

About 6% of weekly flights between Chiang Mai and Ko Samui have experienced delays in the past year, with the average delay time being 115 minutes.

What is the most punctual flight time for Chiang Mai to Ko Samui flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Sunday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Chiang Mai to Ko Samui flights?

Over the past year, Bangkok Airways has had the lowest number of delays on this route, with just 6% of flights being delayed.

Related info for your journey

How long is the flight from Chiang Mai to Ko Samui?

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

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

Can I find deals for flights from Chiang Mai to Ko Samui that include hotel bookings?

How can I find direct flights from Chiang Mai to Ko Samui?

Can I find deals for business class flights from Chiang Mai to Ko Samui?

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

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Other flights to Ko Samui

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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 30 October 2026.

Best flights from Chiang Mai to Ko Samui
Discover carefully curated flight deals from Chiang Mai to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from Chiang Mai to Ko Samui
Explore direct flight options from Chiang Mai to Ko Samui based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from Chiang Mai to Ko Samui
Discover last-minute flight deals from Chiang Mai to Ko Samui. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Chiang Mai to Ko Samui
Search for one-way flight options from Chiang Mai to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.