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Cheap flights from Chiang Mai to Ko Samui from $129

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 2/5. 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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Find the cheapest flights from Chiang Mai to Ko Samui

Cheap round-trip flights

Multiple Airlines Logo
8:10 am - 7:20 amCNX-USM
23h 10m1 stop
Multiple Airlines Logo
8:55 am - 10:40 amUSM-CNX
1h 45mnonstop
$241Multiple Airlines
Find Deal
Sun, Oct 12 - Fri, Oct 17
Bangkok Airways Logo
12:10 pm - 5:50 pmCNX-USM
5h 40m1 stop
Bangkok Airways Logo
8:50 am - 10:40 amUSM-CNX
1h 50mnonstop
$260Bangkok Airways
Find Deal
Fri, Mar 13 - Thu, Mar 19
Multiple Airlines Logo
9:00 pm - 7:20 amCNX-USM
10h 20m1 stop
Multiple Airlines Logo
8:55 am - 10:40 amUSM-CNX
1h 45mnonstop
$273Multiple Airlines
Find Deal
Thu, Oct 16 - Sat, Oct 25
Multiple Airlines Logo
11:30 pm - 7:20 amCNX-USM
7h 50m1 stop
Multiple Airlines Logo
8:55 am - 10:40 amUSM-CNX
1h 45mnonstop
$275Multiple Airlines
Find Deal
Mon, Oct 13 - Fri, Oct 17
Multiple Airlines Logo
10:50 pm - 7:10 amCNX-USM
8h 20m1 stop
Multiple Airlines Logo
8:50 am - 10:40 amUSM-CNX
1h 50mnonstop
$281Multiple Airlines
Find Deal
Mon, Jan 12 - Thu, Feb 5
Multiple Airlines Logo
10:50 pm - 7:10 amCNX-USM
8h 20m1 stop
Multiple Airlines Logo
8:50 am - 10:40 amUSM-CNX
1h 50mnonstop
$282Multiple Airlines
Find Deal
Mon, Jan 12 - Tue, Feb 3
Bangkok Airways Logo
12:10 pm - 5:00 pmCNX-USM
4h 50m1 stop
Bangkok Airways Logo
7:00 am - 8:35 amUSM-CNX
25h 35m1 stop
$283Bangkok Airways
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
10:25 pm - 7:20 amCNX-USM
8h 55m1 stop
Multiple Airlines Logo
8:55 am - 10:40 amUSM-CNX
1h 45mnonstop
$285Multiple Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
Multiple Airlines Logo
10:50 pm - 7:10 amCNX-USM
8h 20m1 stop
Multiple Airlines Logo
8:50 am - 10:40 amUSM-CNX
1h 50mnonstop
$286Multiple Airlines
Find Deal
Wed, Jan 14 - Thu, Feb 5
Multiple Airlines Logo
11:30 pm - 8:15 amCNX-USM
8h 45m1 stop
Multiple Airlines Logo
8:55 am - 10:40 amUSM-CNX
1h 45mnonstop
$287Multiple Airlines
Find Deal
Sat, Oct 11 - Fri, Oct 17

Bangkok Airways flights from Chiang Mai to Ko Samui

Our best Bangkok Airways deals on Chiang Mai to Ko Samui flight tickets
Bangkok Airways
Mar 13
CNX12:10 pmChiang Mai
5h 40m
1 stop
USM5:50 pmKo Samui
Mar 19
USM8:50 amKo Samui
1h 50m
CNX10:40 amChiang Mai
$260
Find similar
Bangkok Airways
Oct 30
CNX12:10 pmChiang Mai
4h 50m
1 stop
USM5:00 pmKo Samui
Nov 6
USM7:00 amKo Samui
25h 35m
1 stop
CNX8:35 amChiang Mai
$283
Find similar
Bangkok Airways
Jan 16
CNX9:40 pmChiang Mai
9h 30m
1 stop
USM7:10 amKo Samui
Jan 25
USM8:50 amKo Samui
1h 50m
CNX10:40 amChiang Mai
$289
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 September 17, 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

Sun 10/12

8:10 am-7:20 am

1 stop23h 10m

Ko Samui

Fri 10/17

8:55 am-10:40 am

Nonstop1h 45m

$241

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 3/13

12:10 pm-5:50 pm

1 stop5h 40m

Ko Samui

Thu 3/19

8:50 am-10:40 am

Nonstop1h 50m

$260

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 10/16

9:00 pm-7:20 am

1 stop10h 20m

Ko Samui

Sat 10/25

8:55 am-10:40 am

Nonstop1h 45m

$273

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 10/13

11:30 pm-7:20 am

1 stop7h 50m

Ko Samui

Fri 10/17

8:55 am-10:40 am

Nonstop1h 45m

$275

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 1/12

10:50 pm-7:10 am

1 stop8h 20m

Ko Samui

Thu 2/5

8:50 am-10:40 am

Nonstop1h 50m

$281

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 1/12

10:50 pm-7:10 am

1 stop8h 20m

Ko Samui

Tue 2/3

8:50 am-10:40 am

Nonstop1h 50m

$282

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 10/30

12:10 pm-5:00 pm

1 stop4h 50m

Ko Samui

Thu 11/6

7:00 am-8:35 am

1 stop25h 35m

$283

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 10/13

10:25 pm-7:20 am

1 stop8h 55m

Ko Samui

Mon 10/20

8:55 am-10:40 am

Nonstop1h 45m

$285

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 1/14

10:50 pm-7:10 am

1 stop8h 20m

Ko Samui

Thu 2/5

8:50 am-10:40 am

Nonstop1h 50m

$286

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 10/11

11:30 pm-8:15 am

1 stop8h 45m

Ko Samui

Fri 10/17

8:55 am-10:40 am

Nonstop1h 45m

$287

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, May 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 $300. If you don’t want to visit Ko Samui in May, then you should wait until October to fly from Chiang Mai, when ticket prices are also cheap, with an average price of $306.

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 Saturday 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 $370 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 20% 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 September 2025, prices for Chiang Mai to Ko Samui flights are approximately 3% 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 4h 50m.

  • 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
113 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 $355 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 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.

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