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 4% of their flights experiencing any sort of delay.

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

Historically, on average around 4% 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 82 minutes.

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. 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 June 2026. 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 June 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.

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.

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 June 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.

$188 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 $308 to $374. The lowest price recently found on this route was $238.

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.

10:30 pm - 7:10 am

CNX

USM

8h 40m

1 stop

8:55 am - 10:40 am

USM

CNX

1h 45mnonstop

$238Multiple Airlines

Wed, Sep 9 - Tue, Sep 15

11:55 am - 5:40 pm

CNX

USM

5h 45m

1 stop

8:50 am - 10:40 am

USM

CNX

1h 50mnonstop

$242Multiple Airlines

Sun, Nov 8 - Thu, Nov 12

10:30 pm - 7:10 am

CNX

USM

8h 40m

1 stop

7:50 am - 5:15 pm

USM

CNX

9h 25m

1 stop

$254Multiple Airlines

Wed, Sep 9 - Tue, Sep 15

10:05 pm - 7:10 am

CNX

USM

9h 05m

1 stop

9:25 pm - 9:20 am

USM

CNX

11h 55m

1 stop

$319Multiple Airlines

Tue, Jul 7 - Tue, Jul 14

10:20 pm - 7:10 am

CNX

USM

8h 50m

1 stop

9:25 pm - 10:10 am

USM

CNX

12h 45m

1 stop

$322Multiple Airlines

Tue, Jul 7 - Fri, Jul 10

10:05 pm - 8:35 am

CNX

USM

10h 30m

1 stop

7:50 am - 3:15 pm

USM

CNX

7h 25m

1 stop

$348Multiple Airlines

Wed, Jul 8 - Wed, Jul 15

3:35 pm - 7:45 pm

CNX

USM

4h 10m

1 stop

7:50 am - 1:50 pm

USM

CNX

6h 00m

1 stop

$370Multiple Airlines

Thu, Aug 13 - Tue, Aug 18

2:30 pm - 8:50 pm

CNX

USM

6h 20m

1 stop

7:50 am - 7:15 pm

USM

CNX

11h 25m

1 stop

$373Multiple Airlines

Thu, Aug 13 - Thu, Aug 20

3:05 pm - 7:45 pm

CNX

USM

4h 40m

1 stop

7:50 am - 10:00 pm

USM

CNX

14h 10m

1 stop

$375Multiple Airlines

Sun, Jul 26 - Wed, Aug 5

11:05 am - 4:55 pm

CNX

USM

5h 50m

2 stops

7:50 am - 7:15 pm

USM

CNX

11h 25m

1 stop

$384Multiple Airlines

Thu, Aug 13 - Thu, Aug 20

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Bangkok Airways flights from Chiang Mai to Ko Samui

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

Bangkok Airways

Sep 9

CNX11:35 amChiang Mai

1h 45m

USM1:20 pmKo Samui

Sep 15

USM8:55 amKo Samui

1h 45m

CNX10:40 amChiang Mai

$388

Bangkok Airways

Jul 8

CNX8:00 pmChiang Mai

12h 15m

1 stop

USM8:15 amKo Samui

Jul 14

USM9:25 pmKo Samui

11h 55m

1 stop

CNX9:20 amChiang Mai

$420

Bangkok Airways

Jul 7

CNX8:00 pmChiang Mai

11h 10m

1 stop

USM7:10 amKo Samui

Jul 10

USM6:00 amKo Samui

5h 15m

1 stop

CNX11:15 amChiang Mai

$423

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 9/9

10:30 pm-7:10 am

1 stop8h 40m

Ko Samui

Tue 9/15

8:55 am-10:40 am

Nonstop1h 45m

$238

Quickest round-trip

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 11/8

11:55 am-5:40 pm

1 stop5h 45m

Ko Samui

Thu 11/12

8:50 am-10:40 am

Nonstop1h 50m

$242

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 9/9

10:30 pm-7:10 am

1 stop8h 40m

Ko Samui

Tue 9/15

7:50 am-5:15 pm

1 stop9h 25m

$254

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 7/7

10:05 pm-7:10 am

1 stop9h 05m

Ko Samui

Tue 7/14

9:25 pm-9:20 am

1 stop11h 55m

$319

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 7/7

10:20 pm-7:10 am

1 stop8h 50m

Ko Samui

Fri 7/10

9:25 pm-10:10 am

1 stop12h 45m

$322

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 7/8

10:05 pm-8:35 am

1 stop10h 30m

Ko Samui

Wed 7/15

7:50 am-3:15 pm

1 stop7h 25m

$348

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 8/13

3:35 pm-7:45 pm

1 stop4h 10m

Ko Samui

Tue 8/18

7:50 am-1:50 pm

1 stop6h 00m

$370

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 8/13

2:30 pm-8:50 pm

1 stop6h 20m

Ko Samui

Thu 8/20

7:50 am-7:15 pm

1 stop11h 25m

$373

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sun 7/26

3:05 pm-7:45 pm

1 stop4h 40m

Ko Samui

Wed 8/5

7:50 am-10:00 pm

1 stop14h 10m

$375

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 8/13

11:05 am-4:55 pm

2 stops5h 50m

Ko Samui

Thu 8/20

7:50 am-7:15 pm

1 stop11h 25m

$384

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

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 $251. 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 $271.

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 $413. Flights from Chiang Mai to Ko Samui on a Wednesday will generally be more expensive and average around $491. 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?

You could potentially save up to 15% on your flight if you consider stops on a Chiang Mai to Ko Samui flight.

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

As of June 2026, prices for Chiang Mai to Ko Samui flights are approximately 14% 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 June 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 $201	Free Cancellation	Rating 8.1 133 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 $201 round-trip. Over the 7 Bangkok Airways flights for this route in a normal week, average airfare is usually $429 round-trip - but some users have found much cheaper deals with momondo.

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Khanom

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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 $188

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 8/25. 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

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?

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

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An easier way to manage your Ko Samui trip

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