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Cheap flights from Chiang Mai to Ko Samui from $186

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 4/9. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Bangkok Airways Logo
11:55 am - 5:05 pm
CNX
-
USM
5h 10m1 stop
Bangkok Airways Logo
7:50 am - 1:45 pm
USM
-
CNX
5h 55m1 stop
$226Bangkok Airways
jue., may. 28 - mar., jun. 2
Bangkok Airways Logo
11:55 am - 4:35 pm
CNX
-
USM
4h 40m1 stop
Bangkok Airways Logo
8:55 am - 10:40 am
USM
-
CNX
1h 45mnonstop
$237Bangkok Airways
jue., may. 28 - mar., jun. 2
Bangkok Airways Logo
11:35 am - 1:20 pm
CNX
-
USM
1h 45mnonstop
Bangkok Airways Logo
8:55 am - 10:40 am
USM
-
CNX
1h 45mnonstop
$260Bangkok Airways
jue., may. 28 - mar., jun. 2
Bangkok Airways Logo
9:40 pm - 7:45 am
CNX
-
USM
10h 05m1 stop
Bangkok Airways Logo
8:50 am - 10:40 am
USM
-
CNX
1h 50mnonstop
$307Bangkok Airways
mar., ene. 27 - sáb., ene. 31
Multiple Airlines Logo
6:50 am - 2:45 pm
CNX
-
USM
7h 55m1 stop
Multiple Airlines Logo
6:40 pm - 11:35 pm
USM
-
CNX
4h 55m1 stop
$316Multiple Airlines
mié., mar. 18 - mié., mar. 18
Multiple Airlines Logo
8:00 am - 8:30 pm
CNX
-
USM
12h 30m1 stop
Multiple Airlines Logo
8:50 am - 10:40 am
USM
-
CNX
1h 50mnonstop
$323Multiple Airlines
mié., ene. 21 - mar., ene. 27
Multiple Airlines Logo
10:25 pm - 7:10 am
CNX
-
USM
8h 45m1 stop
Multiple Airlines Logo
8:15 am - 8:55 pm
USM
-
CNX
12h 40m1 stop
$330Multiple Airlines
jue., ene. 8 - jue., ene. 15
Multiple Airlines Logo
9:30 pm - 7:35 am
CNX
-
USM
10h 05m1 stop
Multiple Airlines Logo
8:50 am - 10:40 am
USM
-
CNX
1h 50mnonstop
$331Multiple Airlines
mar., ene. 20 - sáb., ene. 24
Multiple Airlines Logo
6:50 am - 8:30 pm
CNX
-
USM
13h 40m1 stop
Multiple Airlines Logo
8:50 am - 10:40 am
USM
-
CNX
1h 50mnonstop
$334Multiple Airlines
lun., ene. 26 - jue., ene. 29
Multiple Airlines Logo
3:30 pm - 8:30 pm
CNX
-
USM
5h 00m1 stop
Multiple Airlines Logo
8:50 am - 10:40 am
USM
-
CNX
1h 50mnonstop
$346Multiple Airlines
mar., feb. 10 - dom., feb. 15

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 28
CNX11:55 amChiang Mai
5h 10m
1 stop
USM5:05 pmKo Samui
Jun 2
USM7:50 amKo Samui
5h 55m
1 stop
CNX1:45 pmChiang Mai
$226
Find similar
Bangkok Airways
May 28
CNX11:55 amChiang Mai
4h 40m
1 stop
USM4:35 pmKo Samui
Jun 2
USM8:55 amKo Samui
1h 45m
CNX10:40 amChiang Mai
$237
Find similar
Bangkok Airways
May 28
CNX11:35 amChiang Mai
1h 45m
USM1:20 pmKo Samui
Jun 2
USM8:55 amKo Samui
1h 45m
CNX10:40 amChiang Mai
$260
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated diciembre 11, 2025.
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

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

jue. 5/28

11:55 am-5:05 pm

1 stop5h 10m

Ko Samui

mar. 6/2

7:50 am-1:45 pm

1 stop5h 55m

$226

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

jue. 5/28

11:55 am-4:35 pm

1 stop4h 40m

Ko Samui

mar. 6/2

8:55 am-10:40 am

Nonstop1h 45m

$237

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

jue. 5/28

11:35 am-1:20 pm

Nonstop1h 45m

Ko Samui

mar. 6/2

8:55 am-10:40 am

Nonstop1h 45m

$260

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

mar. 1/27

9:40 pm-7:45 am

1 stop10h 05m

Ko Samui

sáb. 1/31

8:50 am-10:40 am

Nonstop1h 50m

$307

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

mié. 3/18

6:50 am-2:45 pm

1 stop7h 55m

Ko Samui

mié. 3/18

6:40 pm-11:35 pm

1 stop4h 55m

$316

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

mié. 1/21

8:00 am-8:30 pm

1 stop12h 30m

Ko Samui

mar. 1/27

8:50 am-10:40 am

Nonstop1h 50m

$323

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

jue. 1/8

10:25 pm-7:10 am

1 stop8h 45m

Ko Samui

jue. 1/15

8:15 am-8:55 pm

1 stop12h 40m

$330

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

mar. 1/20

9:30 pm-7:35 am

1 stop10h 05m

Ko Samui

sáb. 1/24

8:50 am-10:40 am

Nonstop1h 50m

$331

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

lun. 1/26

6:50 am-8:30 pm

1 stop13h 40m

Ko Samui

jue. 1/29

8:50 am-10:40 am

Nonstop1h 50m

$334

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

mar. 2/10

3:30 pm-8:30 pm

1 stop5h 00m

Ko Samui

dom. 2/15

8:50 am-10:40 am

Nonstop1h 50m

$346

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ko Samui from

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?

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 $380 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?

You could potentially save up to 1% 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 December 2025, prices for Chiang Mai to Ko Samui flights are approximately 35% cheaper 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

Mon, Wed, Thu, Fri and Sun

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 on Monday, Wednesday, Thursday, Friday and Sunday. The only airline offering direct flights is Bangkok Airways.
There is 1 airport in Ko Samui. From Chiang Mai there are direct flights to 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 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
Bangkok AirwaysPriceFrom $170Free CancellationRating
8.0
118 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 $374 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan
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

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