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Cheap flights from Chiang Mai to Koh Samui from £145

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/3. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
26 Feb — 5 Mar1
1 adult

The best prices from Chiang Mai to Ko Samui are usually found in May or June, booked 59 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Chiang Mai to Koh Samui

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Koh Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 February 2025.

Round-trip from

£179

One-way from

£145

Popular in

August

Cheapest in

May

Average price

£295

Good one-way deal

£215 or less
Bangkok Airways
  • Bangkok Airways
  • 25/4-29/4
  • 1 total stop
  • 14h 20m total
  • Chiang Mai to Koh Samui
Search Deals
28/3
  • 28/3
  • 2 total stops
  • 12h 05m total
  • Chiang Mai to Koh Samui
Search Deals
High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 1% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
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Price to beat on a one-way flight from Chiang Mai to Ko Samui.
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Find flight deals from Chiang Mai to Koh Samui

Cheapest flights from Chiang Mai to Koh Samui
Explore the most affordable flight options available from Chiang Mai to Koh Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Sun 19/1011:35CNX - USM
Nonstop1h 45mBangkok Airways
Sat 25/1007:00USM - CNX
1 stop4h 15mBangkok Airways
Deal found 20/2£163
Fri 25/422:30CNX - USM
1 stop8h 50mMultiple Airlines
Tue 29/406:55USM - CNX
1 stop11h 10mMultiple Airlines
Deal found 20/2£212

Find flights from Chiang Mai to Koh Samui within your budget

Customise your flight search to find flights from Chiang Mai to Koh 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, Cheapflights users made 858,174 searches. Data last updated 21 February 2025.

Fly from

Chiang Mai

Fly to

Koh Samui

Route

Depart

Return

Price

Chiang MaiKoh Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 25/4

20:00-08:35

1 stop12h 35m

Ko Samui

Tue 29/4

08:55-10:40

Nonstop1h 45m

£179

Chiang MaiKoh Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 25/4

22:30-07:20

1 stop8h 50m

Ko Samui

Tue 29/4

06:55-18:05

1 stop11h 10m

£212

Chiang MaiKoh Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 28/3

06:20-18:25

2 stops12h 05m

£145

Chiang MaiKoh Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 17/3

12:10-20:55

1 stop8h 45m

£148

Chiang MaiKoh Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 21/3

12:25-08:10

2 stops19h 45m

£326

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Best time to book a flight from Chiang Mai to Koh Samui

Have a flexible travel schedule? Discover the best time to fly to Koh Samui from Chiang Mai with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Chiang Mai to Koh Samui

Get recent, data-driven insights about flights from Chiang Mai to Koh Samui including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Chiang Mai to Koh Samui?

Use this chart to determine the optimal time to book a return flight from Chiang Mai to Koh Samui. Price data was last updated on 14 February 2025.

The best time to book flights from Chiang Mai to Koh Samui is 59 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chiang Mai to Koh Samui?

Currently, August is the cheapest month in which you can book a flight from Chiang Mai to Koh Samui (average of £1,019). Flying from Chiang Mai to Koh Samui in December is currently the most expensive (average of £1,594). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CNX to USM?

Find hourly flight availability from Chiang Mai to Koh Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chiang Mai to Koh Samui as you normally would.

Weekly flight availability from Chiang Mai to Koh Samui

Explore weekly flight availability from Chiang Mai to Koh Samui. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 February 2025.

The most flights from CNX to USM are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Koh Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Koh Samui when rainfall is around 58.0 mm.

Temperature in Koh Samui by month

Plan your trip to Koh Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Koh Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

Reviews of airlines servicing Koh Samui

Get insights into the airlines that provide service to Koh Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Koh Samui. Reviews last updated 21 February 2025.
Bangkok Airways
8.0
Very Good
114 reviews
Check prices

Food

7.3

Boarding

8.0

Comfort

7.9

Overall

8.0

Crew

8.6

Entertainment

6.4

Reviews

1 / 6

4.0
Okay

Derick,Jun 2024

HKT - BKK

Basic, long check-in and boarding. No entertainment and only a single spicy option for meal/snack.

Bangkok Airways
8.0
Very Good
114 reviews
Bangkok Airways
8.0
Very Good
114 reviews
Check prices

Food

7.3

Boarding

8.0

Comfort

7.9

Overall

8.0

Crew

8.6

Entertainment

6.4

Reviews

1 / 6

4.0
Okay

Derick,Jun 2024

HKT - BKK

Basic, long check-in and boarding. No entertainment and only a single spicy option for meal/snack.

Malaysia Airlines
7.4
Good
263 reviews
Bangkok Airways
8.0
Very Good
114 reviews
Check prices

Food

7.3

Boarding

8.0

Comfort

7.9

Overall

8.0

Crew

8.6

Entertainment

6.4

Reviews

1 / 6

4.0
Okay

Derick,Jun 2024

HKT - BKK

Basic, long check-in and boarding. No entertainment and only a single spicy option for meal/snack.

Related info for your journey

Find useful and relevant information for your journey from Chiang Mai to Koh Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Chiang Mai to Koh Samui?

    Ko Samui is the airport most travelers will use when flying to Koh Samui from Chiang Mai. Booking flights from Chiang Mai (CNX) to Ko Samui (USM) should be relatively easy as there are 6 daily flights to Koh Samui from 1 airline. 6h 00m is how long a flight from Chiang Mai to Ko Samui will take if you book a nonstop flight.

  • How popular is this Chiang Mai to Koh Samui flight route?

    This flight path from Chiang Mai to Ko Samui was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What is the cheapest airline to fly from Chiang Mai to Koh Samui round-trip?

    Currently priced at £179, Bangkok Airways will fly you from Chiang Mai to Koh Samui and back. In addition to Bangkok Airways, many other airlines offer competitively priced options for your trip. Bangkok Airways is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Chiang Mai to Koh Samui?

    No one likes to see their flight delayed. When booking a flight from Chiang Mai to Koh Samui consider choosing EVA Air (78%), Thai Airways (78%) or China Airlines (78%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chiang Mai to Koh Samui?

    Looking for the cheapest flight from Chiang Mai to Koh Samui? While on average our users pay £222, our data indicates the cheapest price to be £171. The most popular route (Chiang Mai - Ko Samui), is priced around £391.

  • Can I find deals for flights from Chiang Mai to Koh Samui that include hotel bookings?

    Yes. In addition to deals on Chiang Mai to Koh Samui flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chiang Mai to Koh Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chiang Mai to Koh Samui.

  • Can I find deals for business class flights from Chiang Mai to Koh Samui?

    Yes. Cheapflights offers flight deals from Chiang Mai to Koh Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chiang Mai to Koh Samui?

    Currently, August is the cheapest month in which you can book a flight from Chiang Mai to Koh Samui (average of £1,019). Flying from Chiang Mai to Koh Samui in December is currently the most expensive (average of £1,594). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Chiang Mai?

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

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Alternative routes for Chiang Mai to Koh Samui

See prices for flight routes from nearby airports that may be better suited for you.
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Koh Samui to Suvarnabhumi flights
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Suvarnabhumi to Chiang Rai flights
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Don Mueang Intl to Phuket City flights
Chiang Mai to Suvarnabhumi flights
Krabi to Chiang Mai flights
Suvarnabhumi to Surat Thani flights
Udon Thani to Suvarnabhumi flights
Suvarnabhumi to Chiang Mai flights

Top airline flying from Chiang Mai to Koh Samui

Discover the top airline that operate flights from Chiang Mai to Koh Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£151Average£231FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Chiang Mai to Koh Samui?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Koh Samui from Chiang Mai today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Chiang Mai to Koh Samui?

Cheapflights helps you find that perfect flight to Koh Samui from Chiang Mai by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Chiang Mai to Koh Samui with no change fees?

Need flexible booking options for your flight to Koh Samui from Chiang Mai? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Chiang Mai to Koh Samui become cheaper?

Yes, Cheapflights offers price alerts on Chiang Mai to Koh Samui flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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