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Cheap flights from Chiang Mai to Ko Samui from £79

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 13/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Chiang Mai to Ko Samui

Cheap return flights

Bangkok Airways Logo
11:35 - 13:20CNX-USM
1h 45mdirect
Bangkok Airways Logo
08:55 - 10:40USM-CNX
1h 45mdirect
£174Bangkok Airways
Find Deal
Thu, 11 Sep - Sun, 14 Sep
Logo
22:25 - 07:20CNX-USM
8h 55m1 stop
Logo
08:55 - 10:40USM-CNX
1h 45mdirect
£183
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Logo
20:55 - 07:20CNX-USM
10h 25m1 stop
Logo
12:30 - 07:25USM-CNX
18h 55m2 stops
£186
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Logo
22:25 - 07:20CNX-USM
8h 55m1 stop
Logo
18:55 - 23:25USM-CNX
4h 30m1 stop
£192
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Bangkok Airways Logo
10:10 - 16:25CNX-USM
6h 15m1 stop
Bangkok Airways Logo
07:00 - 11:20USM-CNX
4h 20m1 stop
£202Bangkok Airways
Find Deal
Tue, 13 Jan - Wed, 4 Feb
Bangkok Airways Logo
10:10 - 17:00CNX-USM
6h 50m1 stop
Bangkok Airways Logo
07:00 - 11:20USM-CNX
4h 20m1 stop
£215Bangkok Airways
Find Deal
Tue, 13 Jan - Thu, 5 Feb
Bangkok Airways Logo
10:10 - 16:25CNX-USM
6h 15m1 stop
Bangkok Airways Logo
08:50 - 10:40USM-CNX
1h 50mdirect
£215Bangkok Airways
Find Deal
Tue, 13 Jan - Wed, 4 Feb
Bangkok Airways Logo
12:10 - 18:55CNX-USM
6h 45m1 stop
Bangkok Airways Logo
07:00 - 11:20USM-CNX
4h 20m1 stop
£231Bangkok Airways
Find Deal
Mon, 12 Jan - Tue, 3 Feb
Bangkok Airways Logo
12:10 - 18:55CNX-USM
6h 45m1 stop
Bangkok Airways Logo
07:00 - 11:20USM-CNX
4h 20m1 stop
£238Bangkok Airways
Find Deal
Wed, 14 Jan - Wed, 4 Feb
Cathay Pacific Logo
19:25 - 16:35CNX-USM
21h 10m2 stops
Cathay Pacific Logo
07:00 - 18:40USM-CNX
11h 40m2 stops
£1,405Cathay Pacific
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Sat, 13 Sep - Sat, 20 Sep

Bangkok Airways flights from Chiang Mai to Ko Samui

Our best Bangkok Airways deals on Chiang Mai to Ko Samui flight tickets
Bangkok Airways
11 Sept
CNX11:35Chiang Mai
1h 45m
USM13:20Ko Samui
14 Sept
USM08:55Ko Samui
1h 45m
CNX10:40Chiang Mai
£174
Find similar
Bangkok Airways
13 Jan
CNX10:10Chiang Mai
6h 15m
1 stop
USM16:25Ko Samui
4 Feb
USM07:00Ko Samui
4h 20m
1 stop
CNX11:20Chiang Mai
£202
Find similar
Bangkok Airways
13 Jan
CNX10:10Chiang Mai
6h 50m
1 stop
USM17:00Ko Samui
5 Feb
USM07:00Ko Samui
4h 20m
1 stop
CNX11:20Chiang Mai
£215
Find similar

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 1 August 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

Thu 11/9

11:35-13:20

Nonstop1h 45m

Ko Samui

Sun 14/9

08:55-10:40

Nonstop1h 45m

£174

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 13/9

22:25-07:20

1 stop8h 55m

Ko Samui

Sat 20/9

08:55-10:40

Nonstop1h 45m

£183

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 13/9

20:55-07:20

1 stop10h 25m

Ko Samui

Sat 20/9

12:30-07:25

2 stops18h 55m

£186

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 13/9

22:25-07:20

1 stop8h 55m

Ko Samui

Sat 20/9

18:55-23:25

1 stop4h 30m

£192

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 13/1

10:10-16:25

1 stop6h 15m

Ko Samui

Wed 4/2

07:00-11:20

1 stop4h 20m

£202

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 13/1

10:10-17:00

1 stop6h 50m

Ko Samui

Thu 5/2

07:00-11:20

1 stop4h 20m

£215

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Tue 13/1

10:10-16:25

1 stop6h 15m

Ko Samui

Wed 4/2

08:50-10:40

Nonstop1h 50m

£215

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 12/1

12:10-18:55

1 stop6h 45m

Ko Samui

Tue 3/2

07:00-11:20

1 stop4h 20m

£231

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Wed 14/1

12:10-18:55

1 stop6h 45m

Ko Samui

Wed 4/2

07:00-11:20

1 stop4h 20m

£238

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Sat 13/9

19:25-16:35

2 stops21h 10m

Ko Samui

Sat 20/9

07:00-18:40

2 stops11h 40m

£1,405

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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?

The cheapest month to fly to Ko Samui from Chiang Mai is in May. Flight prices, which tend to average around £226, are often lower during this time because this is during the off-season. If you don’t want to visit Ko Samui in May, then you should wait until September to fly from Chiang Mai, when ticket prices are also cheap, with an average price of £238.

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

According to our data, Wednesday is the cheapest day to fly to Ko Samui from Chiang Mai. The lowest ticket price found for a Wednesday departure recently was £256. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Ko Samui on Monday is £265.

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 £276 when searching weeks before you fly. 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 £174 on momondo.

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

There are 1 cabin classes 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 26% 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 August 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 return 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

Best price found

£79

Fastest flight time

1h 45m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Ko Samui

1 airport
The best one-way flight to Ko Samui from Chiang Mai in the past 72 hours is £79. The best return flight deal from Chiang Mai to Ko Samui found on momondo in the last 72 hours is £174.
The fastest flight from Chiang Mai to Ko Samui takes 1h 45m
Direct flights go from Chiang Mai to Ko Samui on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airline offering direct flights is Bangkok Airways..
There is 1 airport near Ko Samui: Ko Samui (USM)
Search flight deals

  • How far is Chiang Mai to Ko Samui by plane?

    A flight from Chiang Mai to Ko Samui will travel around 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 refreshed on a daily basis.

  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents required for your trip to Ko Samui Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ko Samui Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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 £144Free CancellationRating
8.0
112 reviews
Search Bangkok Airways flights

  • Bangkok Airways Flights From Chiang Mai to Ko Samui

    The lowest priced Bangkok Airways flight from Chiang Mai to Ko Samui from the last 72 hours was £190. Generally, Bangkok Airways has 10 flights on this route every week with an average price of £354. Bangkok Airways is rated 8.0/10 by our users.

Travelling 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?

Finding the right flight to Ko Samui from Chiang Mai is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ko Samui quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Ko Samui from Chiang Mai with this policy.

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

Once you have performed a search for Chiang Mai to Ko Samui flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Ko Samui, momondo offers a useful price alert feature which will track prices for flights to Ko Samui from Chiang Mai and alert you when they change.

An easier way to manage your Ko Samui trip

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