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 3% of their flights experiencing any sort of delay.

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

As of April 2026, 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.

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

Historically, on average around 3% 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 78 minutes.

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

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

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 April 2026. The most popular departure time for this route is 11:00AM, with 100% of flights per day taking off at noon.

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 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

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 April 2026, 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.

$158 Cheap Flights from Chiang Mai to Ko Samui in 2026

Q: What is the typical price of a round-trip flight between Chiang Mai and Ko Samui?

Prices are currently low for flights on this route. Typical prices usually range from $445 to $267. The lowest price recently found on this route was $234.

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Chiang Mai to Ko Samui

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:25 pm - 7:10 am

CNX

USM

12h 45m

1 stop

8:55 am - 10:40 am

USM

CNX

1h 45mnonstop

$234Multiple Airlines

Tue, May 19 - Mon, May 25

2:35 pm - 6:30 pm

CNX

USM

3h 55m

1 stop

8:55 am - 10:40 am

USM

CNX

1h 45mnonstop

$237Bangkok Airways

Wed, May 20 - Sun, May 24

10:20 pm - 7:10 am

CNX

USM

8h 50m

1 stop

8:55 am - 10:40 am

USM

CNX

1h 45mnonstop

$243Multiple Airlines

Thu, May 7 - Thu, May 14

9:00 pm - 7:10 am

CNX

USM

10h 10m

1 stop

8:55 am - 10:40 am

USM

CNX

1h 45mnonstop

$247Multiple Airlines

Sat, May 9 - Sat, May 16

10:20 pm - 7:10 am

CNX

USM

8h 50m

1 stop

8:55 am - 10:40 am

USM

CNX

1h 45mnonstop

$250Multiple Airlines

Tue, May 19 - Sun, May 24

10:20 pm - 7:10 am

CNX

USM

8h 50m

1 stop

6:00 am - 10:10 am

USM

CNX

4h 10m

1 stop

$254Multiple Airlines

Tue, May 19 - Mon, May 25

8:00 pm - 7:10 am

CNX

USM

11h 10m

1 stop

8:55 am - 10:40 am

USM

CNX

1h 45mnonstop

$255Bangkok Airways

Sun, May 24 - Sun, May 31

10:20 pm - 7:10 am

CNX

USM

8h 50m

1 stop

6:00 am - 2:35 pm

USM

CNX

8h 35m

1 stop

$260Multiple Airlines

Thu, May 7 - Thu, May 14

8:00 pm - 7:10 am

CNX

USM

11h 10m

1 stop

8:55 am - 10:40 am

USM

CNX

1h 45mnonstop

$263Bangkok Airways

Thu, May 7 - Thu, May 14

11:55 am - 5:05 pm

CNX

USM

5h 10m

1 stop

8:55 am - 10:40 am

USM

CNX

1h 45mnonstop

$267Bangkok Airways

Sun, Sep 13 - Sat, Sep 26

Bangkok Airways flights from Chiang Mai to Ko Samui

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

Bangkok Airways

May 20

CNX2:35 pmChiang Mai

3h 55m

1 stop

USM6:30 pmKo Samui

May 24

USM8:55 amKo Samui

1h 45m

CNX10:40 amChiang Mai

$237

Bangkok Airways

May 24

CNX8:00 pmChiang Mai

11h 10m

1 stop

USM7:10 amKo Samui

May 31

USM8:55 amKo Samui

1h 45m

CNX10:40 amChiang Mai

$255

Bangkok Airways

May 7

CNX8:00 pmChiang Mai

11h 10m

1 stop

USM7:10 amKo Samui

May 14

USM8:55 amKo Samui

1h 45m

CNX10:40 amChiang Mai

$263

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 5/19

6:25 pm-7:10 am

1 stop12h 45m

Ko Samui

Mon 5/25

8:55 am-10:40 am

Nonstop1h 45m

$234

Quickest round-trip

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 5/20

2:35 pm-6:30 pm

1 stop3h 55m

Ko Samui

Sun 5/24

8:55 am-10:40 am

Nonstop1h 45m

$237

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 5/7

10:20 pm-7:10 am

1 stop8h 50m

Ko Samui

Thu 5/14

8:55 am-10:40 am

Nonstop1h 45m

$243

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 5/9

9:00 pm-7:10 am

1 stop10h 10m

Ko Samui

Sat 5/16

8:55 am-10:40 am

Nonstop1h 45m

$247

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 5/19

10:20 pm-7:10 am

1 stop8h 50m

Ko Samui

Sun 5/24

8:55 am-10:40 am

Nonstop1h 45m

$250

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 5/19

10:20 pm-7:10 am

1 stop8h 50m

Ko Samui

Mon 5/25

6:00 am-10:10 am

1 stop4h 10m

$254

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 5/24

8:00 pm-7:10 am

1 stop11h 10m

Ko Samui

Sun 5/31

8:55 am-10:40 am

Nonstop1h 45m

$255

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 5/7

10:20 pm-7:10 am

1 stop8h 50m

Ko Samui

Thu 5/14

6:00 am-2:35 pm

1 stop8h 35m

$260

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 5/7

8:00 pm-7:10 am

1 stop11h 10m

Ko Samui

Thu 5/14

8:55 am-10:40 am

Nonstop1h 45m

$263

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 9/13

11:55 am-5:05 pm

1 stop5h 10m

Ko Samui

Sat 9/26

8:55 am-10:40 am

Nonstop1h 45m

$267

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Delays

Other information

What is the typical price of a round-trip flight between Chiang Mai and Ko Samui?

What is the cheapest month to fly to Ko Samui?

In general, June 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 $266. If you don’t want to visit Ko Samui in June, then you should wait until September to fly from Chiang Mai, when ticket prices are also cheap, with an average price of $288.

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

Our data shows that Monday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $398. Flights from Chiang Mai to Ko Samui on a Thursday will generally be more expensive and average around $469. 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

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 April 2026, prices for Chiang Mai to Ko Samui flights are approximately 55% 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	19h 30m
Direct flights	Every day
Airports in Ko Samui	1 airport

The fastest flight from Chiang Mai to Ko Samui takes 19h 30m

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

There is 1 airport in Ko Samui. From Chiang Mai there are direct flights to Ko Samui (USM).

Search flight deals

Frequently asked questions about flying from Chiang Mai to Ko Samui

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 19h 30m.
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 April 2026, 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 (100.00% of total bookings).
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 $186	Free Cancellation	Rating 8.1 128 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 $186 round-trip. Over the 7 Bangkok Airways flights for this route in a normal week, average airfare is usually $413 round-trip - but some users have found much cheaper deals with momondo.

Ko Pha Ngan

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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Wed 5/13

Wed 5/20

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand

Nearby airports

Airlines

Cabin classes

Other Thailand destinations

Complete your trip

Feeling lucky

Cheap flights from Chiang Mai to Ko Samui from $158

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 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Chiang Mai to Ko Samui

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Bangkok Airways flights from Chiang Mai to Ko Samui

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

momondo Fare Finder

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

See travel insights to Ko Samui from

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

What is the typical price of a round-trip flight between Chiang Mai and Ko Samui?

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?

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

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

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

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

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

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

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

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

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

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

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

Frequently asked questions about flying 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?

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

Fly your favorite airline to Ko Samui

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Ko Samui

List of cabin classes available on flights landing in Ko Samui. Availability may vary depending on flight origin and airline.

Popular cities in Thailand

Popular flights according to clicks in the last 7 days on momondo

Complete your trip to Ko Samui

Explore popular destinations other users love

According to popular flight searches on momondo this year