Ko Samui

$148+ 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — USM
Mar 30 — Apr 61
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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.

Cheapflights Tip: The best prices from Chiang Mai to Ko Samui are usually found in May or June, booked 59 days in advance, depart on a Friday or Sunday and return on a Monday

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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$191
(Trip.com)

One-way from

$151
(Bangkok Airways)

Popular in

August

Cheapest in

May

Average price

$352

Good round-trip deal

$371 or less

Good one-way deal

$248 or less
Provider with most accurate pricing for Chiang Mai-Ko Samui flight deals.
Provider most trusted by Cheapflights users for Chiang Mai-Ko Samui flights.
From Chiang Mai to Ko Samui
One-way flight from Chiang Mai to Ko Samui
High demand for flights, 2% potential price rise
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in March 2025
Price to beat on a round-trip flight from Chiang Mai to Ko Samui.
Price to beat on a one-way flight from Chiang Mai to Ko Samui.

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 March 25, 2025.

This Mytrip deal was found by Cheapflights users on 3/24. 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.
Mon 5/126:30 amCNX - USM
1 stop24h 50mMultiple Airlines
Mon 5/198:55 amUSM - CNX
Nonstop1h 45mMultiple Airlines
Deal found 3/24$218
This CheapOair deal was found by Cheapflights users on 3/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/28:00 pmCNX - USM
1 stop11h 35mBangkok Airways
Wed 5/148:55 amUSM - CNX
Nonstop1h 45mBangkok Airways
Deal found 3/24$321

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 March 25, 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

Mon 5/12

6:30 am-7:35 am

1 stop25h 05m

Ko Samui

Mon 5/19

7:00 am-1:45 pm

1 stop6h 45m

$218

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Fri 5/2

8:00 pm-7:35 am

1 stop11h 35m

Ko Samui

Wed 5/14

8:55 am-10:40 am

Nonstop1h 45m

$321

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Mon 6/30

10:10 am-6:00 pm

2 stops7h 50m

$148

Chiang MaiKo Samui

CNX - USM

CNXUSM

Chiang Mai

Thu 4/3

10:10 am-8:35 am

1 stop22h 25m

$151

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Chiang Mai to Ko Samui

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chiang Mai to Ko Samui in March.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chiang Mai-Ko Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chiang Mai-Ko Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chiang Mai-Ko Samui flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chiang Mai-Ko Samui flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chiang Mai-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 March 21, 2025.

Booking 59 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 March 25, 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 18% 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 March 25, 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 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 March 25, 2025.

Comfort

7.8

Boarding

7.9

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

6.2

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.

Comfort

7.8

Boarding

7.9

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

6.2

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 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 6 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?

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

    According to our current data, Bangkok Airways ($191), offers the cheapest pricing from Chiang Mai to Ko Samui. Bangkok Airways is currently priced 44% below the average price you’ll pay for this route.

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

    Consider EVA Air (93%), Thai Airways (93%) or China Airlines (93%) 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 $336, our data shows the cheapest flight currently is $87. 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

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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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest$170Average$352FlexibilityNo cancel feeOn-time74%
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