HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ko Samui

$123+ Cheap flights from Chiang Mai to Ko Samui (CNX - USM)

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 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chiang Mai to Ko Samui with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Chiang Mai to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Ko 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 junio 12, 2025.

Round-trip from

$195
(Bangkok Airways)

One-way from

$123
(Bangkok Airways)

Popular in

August

Cheapest in

May

Average price

$330

Good one-way deal

$226 or less
From Chiang Mai to Ko Samui
Search Deals
One-way flight from Chiang Mai to Ko Samui
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a one-way flight from Chiang Mai to Ko Samui.
Search Deals

Find flight deals from Chiang Mai to Ko Samui

Cheapest flights from Chiang Mai to Ko Samui
Explore the most affordable flight options available from Chiang Mai to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Bangkok Airways deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bangkok Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1210:10 amCNX - USM
1 stop6h 50mBangkok Airways
mar. 11/188:50 amUSM - CNX
Nonstop1h 50mBangkok Airways
Deal found 6/10$195
This Mytrip deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/78:00 amCNX - USM
1 stop23h 20mMultiple Airlines
dom. 9/147:00 amUSM - CNX
1 stop26h 00mMultiple Airlines
Deal found 6/12$211
This Gotogate deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/712:35 pmCNX - USM
2 stops18h 45mMalaysia Airlines
dom. 9/143:50 pmUSM - CNX
2 stops19h 50mMalaysia Airlines
Deal found 6/12$676

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Chiang Mai to Ko Samui that are best for you.

Fly from

Chiang Mai

Fly to

Ko Samui

Route

Depart

Return

Price

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

mié. 11/12

10:10 am-5:00 pm

1 stop6h 50m

Ko Samui

mié. 11/19

8:50 am-10:40 am

Nonstop1h 50m

$195

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

dom. 9/7

8:00 am-7:20 am

1 stop23h 20m

Ko Samui

dom. 9/14

7:00 am-9:00 am

1 stop26h 00m

$211

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

dom. 9/7

12:35 pm-7:20 am

2 stops18h 45m

Ko Samui

dom. 9/14

3:50 pm-11:40 am

2 stops19h 50m

$676

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

vie. 11/21

7:45 pm-7:10 am

1 stop11h 25m

$123

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

jue. 6/19

11:05 am-7:45 pm

1 stop8h 40m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Chiang Mai with our price prediction graph.
Estimated round-trip 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.

Cheapflights Insights

Everything you need to know about your flight from Chiang Mai to Ko Samui

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

Use this chart to determine the optimal time to book a round-trip flight from Chiang Mai to Ko Samui. Price data was last updated on June 9, 2025.

Booking 40 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chiang Mai to Ko Samui. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Find hourly flight availability from Chiang Mai to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

One of the essential ways to save on airfare from Chiang Mai to Ko Samui is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 19% on airfare.

Weekly flight availability from Chiang Mai to Ko Samui

Explore weekly flight availability from Chiang Mai to Ko 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 junio 12, 2025.

The most flights from CNX to USM are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Ko Samui by month

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

In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

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

If weather is an important factor for your trip to Ko 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko 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 Ko Samui. Reviews last updated junio 12, 2025.
Bangkok Airways
8.0
Very good
111 reviews

Boarding

7.9

Comfort

7.8

Food

7.2

Overall

8.0

Entertainment

6.2

Crew

8.5

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.
Bangkok Airways
8.0
Very good
111 reviews
Bangkok Airways
8.0
Very good
111 reviews

Boarding

7.9

Comfort

7.8

Food

7.2

Overall

8.0

Entertainment

6.2

Crew

8.5

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.
Malaysia Airlines
7.4
Good
263 reviews
Bangkok Airways
8.0
Very good
111 reviews

Boarding

7.9

Comfort

7.8

Food

7.2

Overall

8.0

Entertainment

6.2

Crew

8.5

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.

Related info for your journey

Find useful and relevant information for your journey from Chiang Mai to Ko 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 Ko Samui?

    You will need to book a flight from Chiang Mai to Ko Samui if you want to fly from Chiang Mai to Ko Samui. At least 1 airline has flights from Chiang Mai (CNX) to Ko Samui (USM) on a regular basis. There are 7 flights to Ko Samui from the Chiang Mai airport per day. If you manage to book one that is nonstop, then you can expect the flight time from CNX to USM to be around 19h 30m.

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

    Flights from Chiang Mai to Ko Samui have been viewed 2 times in the past calendar month.

  • What are the cheapest airlines flying from Chiang Mai to Ko Samui round-trip?

    According to our current data, Bangkok Airways ($195), and Malaysia Airlines ($676) offers the cheapest pricing from Chiang Mai to Ko Samui. Bangkok Airways is currently priced 45% below the average price you’ll pay for this route.

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

    Consider Etihad Airways (100%), Bangkok Airways (98%) or EVA Air (95%) when booking your flight. These represent the most reliable airlines when flying from Chiang Mai to Ko Samui.

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

    While on average a flight from Chiang Mai to Ko Samui is generally $270, our data shows the cheapest flight currently is $158. When looking at the most popular route, (Chiang Mai - Ko Samui), you can expect to pay $586 for that flight.

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

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

  • How can I find direct flights from Chiang Mai to Ko 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 Ko Samui.

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

    Yes. Cheapflights offers flight deals from Chiang Mai to Ko 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.

See more FAQs

Traveling 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chiang Mai to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Don Mueang Intl to Krabi flights
Don Mueang Intl to Chiang Mai flights
Suvarnabhumi to Chiang Mai flights
Suvarnabhumi to Ko Samui flights
Don Mueang Intl to Phuket City flights
Chiang Mai to Don Mueang Intl flights
Chiang Mai to Krabi flights
Suvarnabhumi to Phuket City flights
Phuket City to Suvarnabhumi flights
Krabi to Don Mueang Intl flights
Suvarnabhumi to Khon Kaen flights
Rayong to Phuket City flights
Phuket City to Don Mueang Intl flights
Suvarnabhumi to Krabi flights
Udon Thani to Suvarnabhumi flights
Hat Yai to Suvarnabhumi flights
Suvarnabhumi to Ubon Ratchathani flights
Suvarnabhumi to Hat Yai flights
Suvarnabhumi to Udon Thani flights
Ko Samui to Chiang Mai flights
Ko Samui to Suvarnabhumi flights
Chiang Rai to Suvarnabhumi flights
Suvarnabhumi to Surat Thani flights
Chiang Mai to Phuket City flights
Krabi to Ko Samui flights
Phuket City to Rayong flights
Surat Thani to Suvarnabhumi flights
Surat Thani to Chiang Mai flights
Ko Samui to Phuket City flights
Suvarnabhumi to Chiang Rai flights
Krabi to Chiang Mai flights
Krabi to Suvarnabhumi flights
Phuket City to Ko Samui flights
Phuket City to Chiang Mai flights
Chiang Mai to Surat Thani flights
Chiang Mai to Suvarnabhumi flights

Top airline flying from Chiang Mai to Ko Samui

Discover the top airline that operate flights from Chiang Mai to Ko 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 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest$186Average$368FlexibilityNo cancel feeOn-time74%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.