£66 Cheap Flights from Chiang Mai (CNX) to Samui Intl. Airport (USM)

View £66 flight on Mon, 25 May 2026Opens in a new window

Popular airlines from Chiang Mai Intl. Airport (CNX) to Samui Intl. Airport (USM)

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Cheap Flights from Chiang Mai (CNX) to Samui Intl. Airport (USM)

Prices were available within the past 7 days and start at £66 for one-way flights and £135 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Thu, 16 Oct - Wed, 22 Oct
CNX
Chiang Mai
USM
Koh Samui
£135 Return, found 6 days ago
£135
Return
found 6 days ago
Select Bangkok Airways flight, departing Thu, 16 Oct from Chiang Mai to Koh Samui, returning Wed, 22 Oct, priced at £135 found 6 days ago
Bangkok Airways
Sat, 13 Sep - Sat, 20 Sep
CNX
Chiang Mai
USM
Koh Samui
£143 Return, found 6 days ago
£143
Return
found 6 days ago
Select Bangkok Airways flight, departing Sat, 13 Sep from Chiang Mai to Koh Samui, returning Sat, 20 Sep, priced at £143 found 6 days ago
Bangkok Airways
Sat, 13 Sep - Mon, 22 Sep
CNX
Chiang Mai
USM
Koh Samui
£146 Return, found 5 days ago
£146
Return
found 5 days ago
Select Bangkok Airways flight, departing Sat, 13 Sep from Chiang Mai to Koh Samui, returning Mon, 22 Sep, priced at £146 found 5 days ago
Bangkok Airways
Mon, 15 Sep - Thu, 18 Sep
CNX
Chiang Mai
USM
Koh Samui
£147 Return, found 6 days ago
£147
Return
found 6 days ago
Select Bangkok Airways flight, departing Mon, 15 Sep from Chiang Mai to Koh Samui, returning Thu, 18 Sep, priced at £147 found 6 days ago
Bangkok Airways
Sat, 13 Sep - Mon, 22 Sep
CNX
Chiang Mai
USM
Koh Samui
£150 Return, found 5 days ago
£150
Return
found 5 days ago
Select Bangkok Airways flight, departing Sat, 13 Sep from Chiang Mai to Koh Samui, returning Mon, 22 Sep, priced at £150 found 5 days ago
Bangkok Airways
Fri, 12 Sep - Wed, 17 Sep
CNX
Chiang Mai
USM
Koh Samui
£208 Return, found 5 days ago
£208
Return
found 5 days ago
Select Bangkok Airways flight, departing Fri, 12 Sep from Chiang Mai to Koh Samui, returning Wed, 17 Sep, priced at £208 found 5 days ago
Bangkok Airways
Fri, 12 Sep - Wed, 17 Sep
CNX
Chiang Mai
USM
Koh Samui
£211 Return, found 5 days ago
£211
Return
found 5 days ago
Select Bangkok Airways flight, departing Fri, 12 Sep from Chiang Mai to Koh Samui, returning Wed, 17 Sep, priced at £211 found 5 days ago
Bangkok Airways
Sat, 13 Sep - Mon, 22 Sep
CNX
Chiang Mai
USM
Koh Samui
£214 Return, found 5 days ago
£214
Return
found 5 days ago
Select Bangkok Airways flight, departing Sat, 13 Sep from Chiang Mai to Koh Samui, returning Mon, 22 Sep, priced at £214 found 5 days ago
Bangkok Airways
Sat, 13 Sep - Sat, 20 Sep
CNX
Chiang Mai
USM
Koh Samui
£215 Return, found 6 days ago
£215
Return
found 6 days ago
Select Bangkok Airways flight, departing Sat, 13 Sep from Chiang Mai to Koh Samui, returning Sat, 20 Sep, priced at £215 found 6 days ago
Bangkok Airways
Sat, 13 Sep - Mon, 22 Sep
CNX
Chiang Mai
USM
Koh Samui
£217 Return, found 5 days ago
£217
Return
found 5 days ago
Select Bangkok Airways flight, departing Sat, 13 Sep from Chiang Mai to Koh Samui, returning Mon, 22 Sep, priced at £217 found 5 days ago

Find the cheapest month to fly from Chiang Mai (CNX) to Koh Samui (USM)

September is typically the cheapest month to fly

From £130 - £305 per traveller.

Graph displaying average flight prices per month

Flight from Chiang Mai to Samui Intl. Airport route information
Origin airport
Chiang Mai Intl.
Destination airport
Samui Intl. Airport
Airlines serving
Bangkok Airways
Return price
£135
Distance
1025 km
Average flight time
1 hour 45 mins

Compare flights from Chiang Mai to Samui Intl. Airport easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Chiang Mai to Samui Intl. Airport. Operating between them 7 flights per day, 20 airlines cover the route. And EVA Air, Qatar Airways, Thai Airways International, Etihad Airways, China Airlines, Turkish Airlines, Bangkok Airways fly direct, getting you to Samui Intl. Airport in just 1hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Chiang Mai Intl. to Samui Intl. Airport.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Chiang Mai Intl. (CNX) to Samui Intl. Airport (USM)

The easiest way to view the best deals on flights from Chiang Mai to Samui Intl. Airport today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Chiang Mai Intl. to Samui Intl. Airport start at just £135 and range up to £217.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Chiang Mai and Samui Intl. Airport
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Chiang Mai to Samui Intl. Airport flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Chiang Mai Intl. to Samui Intl. Airport for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Chiang Mai Airport to Ko Samui Airport?
Pack your bags, because round-trip flights between CNX and USM start from £135. That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can go up quickly, so book today to lock in the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Chiang Mai Airport to Ko Samui Airport (USM)?
The majority of flights can be cancelled online, but each airline has its own set of terms and conditions. If you do need to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from Chiang Mai Intl. Airport (CNX) to USM that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Chiang Mai Intl. Airport (CNX) to USM flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Chiang Mai Intl. Airport (CNX) to USM?
It's just 1,050 kilometres between Chiang Mai and Koh Samui. Chances are you'll spend more time travelling to and from the airport than you will actually flying!
Which airlines fly direct from Chiang Mai Intl. Airport (CNX) to Ko Samui Airport?
Check out the airfares with Bangkok Airways (PG) if you want to travel straight from CNX to Ko Samui Airport. This carrier offers 30 flights every month, so you're sure to find one that suits your schedule.
Are CNX to Ko Samui Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices are constantly going up and down, so there are no guarantees. While last-minute flight deals between Chiang Mai Airport and Samui Airport are possible, it's also a good idea to keep track of prices well before you fly. In fact, some carriers publish their prices up to a year before the departure date. Expedia is continuously updating the biggest airfare bargains around, so check back often and be ready to grab your seat when the price is low.

Explore a world of travel with Expedia

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