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

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

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

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

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

Historically, on average around 5% of flights between Chiang Mai and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 64 minutes.

What is the cheapest airline that flies from Chiang Mai to Ko Samui?

Bangkok Airways is the most popular carrier operating from Chiang Mai to Ko Samui

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

According to our data, Bangkok Airways have had the least number of delays on this route over the last 12 months; with about 5% of their flights experiencing any sort of delay.

How many flights depart from Chiang Mai to Ko Samui on average per day?

6 flights are operational daily from Chiang Mai to Ko Samui as of November 2025. The most popular departure time for this route is 11:00AM, with 100% of flights per day taking off at noon.

How many flights depart from Chiang Mai to Ko Samui on average per week?

As of November 2025, there are 42 flights per week flying from Chiang Mai to Ko Samui. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

When did momondo last update prices for flights from Chiang Mai Airport to Ko Samui Airport?

Prices for flights from Chiang Mai Airport to Ko Samui Airport are updated daily.

How many operators does momondo search for flights from Chiang Mai Airport to Ko Samui Airport?

As of November 2025, there is 1 operator available to choose from for flights from Chiang Mai Airport to Ko Samui Airport.

How old do you have to be to fly from Chiang Mai Airport to Ko Samui Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chiang Mai Airport to Ko Samui Airport.

What documentation or ID do you need to fly to Ko Samui Airport?

The required travel and health documents for your Ko Samui Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ko Samui Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$159 Cheap Flights from Chiang Mai to Ko Samui in 2025/26

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10:25 pm - 8:05 amCNX-USM

9h 40m1 stop

8:50 am - 10:40 amUSM-CNX

1h 50mnonstop

$278Multiple Airlines

Find Deal

Sat, Dec 6 - Thu, Dec 11

8:00 pm - 7:20 amCNX-USM

11h 20m1 stop

8:55 am - 10:40 amUSM-CNX

1h 45mnonstop

$291Bangkok Airways

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Thu, Apr 9 - Sun, Apr 12

2:35 pm - 7:20 amCNX-USM

16h 45m1 stop

8:55 am - 10:40 amUSM-CNX

1h 45mnonstop

$295Bangkok Airways

Find Deal

Fri, Apr 10 - Sun, Apr 12

12:10 pm - 5:50 pmCNX-USM

5h 40m1 stop

8:50 am - 10:40 amUSM-CNX

1h 50mnonstop

$306Bangkok Airways

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Thu, Dec 11 - Sun, Dec 14

7:45 pm - 7:45 amCNX-USM

12h 00m1 stop

8:50 am - 10:40 amUSM-CNX

1h 50mnonstop

$311Bangkok Airways

Find Deal

Tue, Dec 9 - Tue, Dec 16

11:55 am - 8:30 pmCNX-USM

8h 35m1 stop

8:55 am - 10:40 amUSM-CNX

1h 45mnonstop

$325Bangkok Airways

Find Deal

Thu, Apr 9 - Fri, Apr 10

6:50 am - 3:10 pmCNX-USM

8h 20m2 stops

8:50 am - 10:40 amUSM-CNX

1h 50mnonstop

$326Multiple Airlines

Find Deal

Sat, Dec 6 - Thu, Dec 11

9:40 pm - 7:10 amCNX-USM

9h 30m1 stop

8:50 am - 10:40 amUSM-CNX

1h 50mnonstop

$332Bangkok Airways

Find Deal

Wed, Feb 25 - Fri, Feb 27

10:25 pm - 8:05 amCNX-USM

9h 40m1 stop

8:50 am - 10:40 amUSM-CNX

1h 50mnonstop

$337Multiple Airlines

Find Deal

Mon, Dec 8 - Mon, Dec 15

6:55 pm - 8:25 amCNX-USM

13h 30m2 stops

8:50 am - 10:40 amUSM-CNX

1h 50mnonstop

$343Multiple Airlines

Find Deal

Thu, Dec 11 - Tue, Dec 16

Bangkok Airways flights from Chiang Mai to Ko Samui

Our best Bangkok Airways deals on Chiang Mai to Ko Samui flight tickets

Bangkok Airways

Apr 9

CNX8:00 pmChiang Mai

11h 20m

1 stop

USM7:20 amKo Samui

Apr 11

USM8:55 amKo Samui

1h 45m

CNX10:40 amChiang Mai

$291

Find similar

Bangkok Airways

Apr 10

CNX2:35 pmChiang Mai

16h 45m

1 stop

USM7:20 amKo Samui

Apr 12

USM8:55 amKo Samui

1h 45m

CNX10:40 amChiang Mai

$295

Find similar

Bangkok Airways

Dec 11

CNX12:10 pmChiang Mai

5h 40m

1 stop

USM5:50 pmKo Samui

Dec 14

USM8:50 amKo Samui

1h 50m

CNX10:40 amChiang Mai

$306

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 12/6

10:25 pm-8:05 am

1 stop9h 40m

Ko Samui

Thu 12/11

8:50 am-10:40 am

Nonstop1h 50m

$278

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 4/9

8:00 pm-7:20 am

1 stop11h 20m

Ko Samui

Sun 4/12

8:55 am-10:40 am

Nonstop1h 45m

$291

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 4/10

2:35 pm-7:20 am

1 stop16h 45m

Ko Samui

Sun 4/12

8:55 am-10:40 am

Nonstop1h 45m

$295

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 12/11

12:10 pm-5:50 pm

1 stop5h 40m

Ko Samui

Sun 12/14

8:50 am-10:40 am

Nonstop1h 50m

$306

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 12/9

7:45 pm-7:45 am

1 stop12h 00m

Ko Samui

Tue 12/16

8:50 am-10:40 am

Nonstop1h 50m

$311

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 4/9

11:55 am-8:30 pm

1 stop8h 35m

Ko Samui

Fri 4/10

8:55 am-10:40 am

Nonstop1h 45m

$325

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 12/6

6:50 am-3:10 pm

2 stops8h 20m

Ko Samui

Thu 12/11

8:50 am-10:40 am

Nonstop1h 50m

$326

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 2/25

9:40 pm-7:10 am

1 stop9h 30m

Ko Samui

Fri 2/27

8:50 am-10:40 am

Nonstop1h 50m

$332

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 12/8

10:25 pm-8:05 am

1 stop9h 40m

Ko Samui

Mon 12/15

8:50 am-10:40 am

Nonstop1h 50m

$337

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 12/11

6:55 pm-8:25 am

2 stops13h 30m

Ko Samui

Tue 12/16

8:50 am-10:40 am

Nonstop1h 50m

$343

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How to get the cheapest flight ticket from Chiang Mai to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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Other information

What is the cheapest month to fly to Ko Samui?

In general, September is the cheapest month to fly from Chiang Mai to Ko Samui. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $284. If you don’t want to visit Ko Samui in September, then you should wait until May to fly from Chiang Mai, when ticket prices are also cheap, with an average price of $301.

What is the cheapest day to depart on your flight to Ko Samui?

Our data shows that Friday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $371. Flights from Chiang Mai to Ko Samui on a Thursday will generally be more expensive and average around $407. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Chiang Mai to Ko Samui flight route?

Fly from Chiang Mai to Ko Samui for the best Chiang Mai - Ko Samui flight prices

How far in advance should I book a flight to Ko Samui?

You are more likely to see cheaper flights to Ko Samui from Chiang Mai when booking weeks ahead of your departure date. In general, you can expect to find flights to Ko Samui for around $376 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ko Samui from Chiang Mai for as low as $160 on momondo.

What cabin class options are available on Chiang Mai to Ko Samui flights?

There is only 1 cabin class available to choose from on Chiang Mai to Ko Samui flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chiang Mai to Ko Samui flights?

No. A direct flight is the cheapest option for a flight between Chiang Mai to Ko Samui.

How have Chiang Mai to Ko Samui flight prices changed over time?

As of November 2025, prices for Chiang Mai to Ko Samui flights are approximately 64% more expensive when compared to flights at the same time last year.

When to book flights from Chiang Mai to Ko Samui

Are you open to changing your travel dates? Check out the ideal times to fly from Chiang Mai to Ko Samui according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Chiang Mai to Ko Samui (CNX to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chiang Mai to Ko Samui

Fastest flight time	1h 45m
Direct flights	Every day
Airports in Ko Samui	1 airport

The fastest flight from Chiang Mai to Ko Samui takes 1h 45m

Direct flights go from Chiang Mai to Ko Samui every day.

There is 1 airport near Ko Samui: Ko Samui (USM)

Search flight deals

How far is Chiang Mai to Ko Samui by plane?
The distance between Chiang Mai and Ko Samui is about 643.7 mi. In terms of flight time, this usually takes a little over 1h 45m.
When did momondo last update prices for flights from Chiang Mai Airport to Ko Samui Airport?
Prices for flights from Chiang Mai Airport to Ko Samui Airport are updated daily.
How many operators does momondo search for flights from Chiang Mai Airport to Ko Samui Airport?
As of November 2025, there is 1 operator available to choose from for flights from Chiang Mai Airport to Ko Samui Airport.
How old do you have to be to fly from Chiang Mai Airport to Ko Samui Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chiang Mai Airport to Ko Samui Airport.
What documentation or ID do you need to fly to Ko Samui Airport?
The required travel and health documents for your Ko Samui Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ko Samui Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Chiang Mai to Ko Samui?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chiang Mai to Ko Samui is Airbus A319 (93.75% of total bookings). The next most popular plane model is Airbus A320-100/200 (6.25%).
What is the most popular airline from Chiang Mai to Ko Samui?
Based on momondo bookings for flights between Chiang Mai and Ko Samui, the leading airline is Bangkok Airways, making up 100% of the total bookings.

Best airlines flying from Chiang Mai to Ko Samui

Compare and see reviews for airlines that fly from Chiang Mai to Ko Samui with momondo

Airline	Rating	Free Cancellation	Price
Bangkok Airways	PriceFrom $170	Free Cancellation	Rating 8.0 117 reviews		Search Bangkok Airways flights

Bangkok Airways Flights From Chiang Mai to Ko Samui
Bangkok Airways flight deals from Chiang Mai to Ko Samui start from $170 round-trip. Over the 7 Bangkok Airways flights for this route in a normal week, average airfare is usually $382 round-trip - but some users have found much cheaper deals with momondo.

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Ko Tao

Khanom

Why use momondo?

Why should I use momondo to find a flight deal from Chiang Mai to Ko Samui?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chiang Mai to Ko Samui. momondo saves you time and could save you money on your trip.

Can I find flights from Chiang Mai to Ko Samui with flexible booking policies on momondo?

Yes. All flights to Ko Samui from Chiang Mai on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Chiang Mai to Ko Samui?

Once all potential Chiang Mai to Ko Samui flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Chiang Mai to Ko Samui right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chiang Mai to Ko Samui flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Chiang Mai to Ko Samui from $159

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chiang Mai to Ko Samui departing on 4/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Chiang Mai to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ko Samui?

What is the cheapest day to depart on your flight to Ko Samui?

What is the cheapest Chiang Mai to Ko Samui flight route?

Fly from Chiang Mai to Ko Samui for the best Chiang Mai - Ko Samui flight prices

How far in advance should I book a flight to Ko Samui?

What cabin class options are available on Chiang Mai to Ko Samui flights?

There is only 1 cabin class available to choose from on Chiang Mai to Ko Samui flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chiang Mai to Ko Samui flights?

No. A direct flight is the cheapest option for a flight between Chiang Mai to Ko Samui.

How have Chiang Mai to Ko Samui flight prices changed over time?

As of November 2025, prices for Chiang Mai to Ko Samui flights are approximately 64% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Chiang Mai to Ko Samui?

Bangkok Airways is the most popular carrier operating from Chiang Mai to Ko Samui

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

Historically, on average around 5% of flights between Chiang Mai and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 64 minutes.

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

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

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

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Bangkok Airways have had the least number of delays on this route over the last 12 months; with about 5% of their flights experiencing any sort of delay.

How many flights depart from Chiang Mai to Ko Samui on average per day?

6 flights are operational daily from Chiang Mai to Ko Samui as of November 2025. The most popular departure time for this route is 11:00AM, with 100% of flights per day taking off at noon.

How many flights depart from Chiang Mai to Ko Samui on average per week?

As of November 2025, there are 42 flights per week flying from Chiang Mai to Ko Samui. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

When to book flights from Chiang Mai to Ko Samui

Cheap Chiang Mai to Ko Samui (CNX to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chiang Mai to Ko Samui

Fastest flight time

Direct flights

Airports in Ko Samui

How far is Chiang Mai to Ko Samui by plane?

When did momondo last update prices for flights from Chiang Mai Airport to Ko Samui Airport?

How many operators does momondo search for flights from Chiang Mai Airport to Ko Samui Airport?

How old do you have to be to fly from Chiang Mai Airport to Ko Samui Airport?

What documentation or ID do you need to fly to Ko Samui Airport?

What is the most popular plane model from Chiang Mai to Ko Samui?

What is the most popular airline from Chiang Mai to Ko Samui?

Best airlines flying from Chiang Mai to Ko Samui

Compare and see reviews for airlines that fly from Chiang Mai to Ko Samui with momondo

Bangkok Airways Flights From Chiang Mai to Ko Samui

Traveling to a place near Ko Samui?

Why use momondo?

Why should I use momondo to find a flight deal from Chiang Mai to Ko Samui?

Can I find flights from Chiang Mai to Ko Samui with flexible booking policies on momondo?

How can momondo help me find flights from Chiang Mai to Ko Samui?

I’m not ready to book a flight from Chiang Mai to Ko Samui right now. Can momondo alert me if prices change?

An easier way to manage your Ko Samui trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Thailand

Airports servicing Thailand