Cheap Flights from Chiang Mai (CNX) to Samui International (USM)

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Compare Chiang Mai to Samui International flight deals

Find the cheapest month or even day of the year to fly to Samui International

Book the best Samui International fare with no extra fees

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Flight deals from Chiang Mai to Samui International

Looking for a cheap last-minute deal or the best return flight from Chiang Mai Airport to Samui International Airport? If you want to travel next month, return fares start from £158. Find the lowest prices on one-way and return tickets right here.

Koh Samui.£55 per passenger.Departing Wed, 12 May.One-way flight with Bangkok Airways.Outbound direct flight with Bangkok Airways departs from Chiang Mai on Wed, 12 May, arriving in Samui International.Price includes taxes and charges.From £55, select.

Koh Samui.£57 per passenger.Departing Wed, 9 Jun.One-way flight with Bangkok Airways.Outbound indirect flight with Bangkok Airways, departs from Chiang Mai on Wed, 9 Jun, arriving in Samui International.Price includes taxes and charges.From £57, select.

Koh Samui.£57 per passenger.Departing Wed, 28 Apr.One-way flight with Bangkok Airways.Outbound indirect flight with Bangkok Airways, departs from Chiang Mai on Wed, 28 Apr, arriving in Samui International.Price includes taxes and charges.From £57, select.

Koh Samui.£85 per passenger.Departing Sat, 31 Oct.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Chiang Mai on Sat, 31 Oct, arriving in Samui International.Price includes taxes and charges.From £85, select.

Koh Samui.£87 per passenger.Departing Tue, 3 Nov.One-way flight with Nok Air.Outbound indirect flight with Nok Air, departs from Chiang Mai on Tue, 3 Nov, arriving in Samui International.Price includes taxes and charges.From £87, select.

Koh Samui.£88 per passenger.Departing Tue, 20 Jul.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Chiang Mai on Tue, 20 Jul, arriving in Samui International.Price includes taxes and charges.From £88, select.

Koh Samui.£89 per passenger.Departing Tue, 10 Aug.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Chiang Mai on Tue, 10 Aug, arriving in Samui International.Price includes taxes and charges.From £89, select.

Koh Samui.£91 per passenger.Departing Mon, 15 Mar.One-way flight with Bangkok Airways.Outbound indirect flight with Bangkok Airways, departs from Chiang Mai on Mon, 15 Mar, arriving in Samui International.Price includes taxes and charges.From £91, select.

Koh Samui.£95 per passenger.Departing Wed, 17 Feb.One-way flight with Thai VietJet Air.Outbound indirect flight with Thai VietJet Air, departs from Chiang Mai on Wed, 17 Feb, arriving in Samui International.Price includes taxes and charges.From £95, select.

Koh Samui.£96 per passenger.Departing Wed, 13 Jan.One-way flight with Thai VietJet Air.Outbound indirect flight with Thai VietJet Air, departs from Chiang Mai on Wed, 13 Jan, arriving in Samui International.Price includes taxes and charges.From £96, select.

Koh Samui.£98 per passenger.Departing Thu, 24 Jun.One-way flight with Bangkok Airways.Outbound direct flight with Bangkok Airways departs from Chiang Mai on Thu, 24 Jun, arriving in Samui International.Price includes taxes and charges.From £98, select.

Koh Samui.£100 per passenger.Departing Sat, 4 Sep.One-way flight with Bangkok Airways.Outbound indirect flight with Bangkok Airways, departs from Chiang Mai on Sat, 4 Sep, arriving in Samui International.Price includes taxes and charges.From £100, select.

Koh Samui.£101 per passenger.Departing Tue, 1 Dec.One-way flight with Nok Air.Outbound indirect flight with Nok Air, departs from Chiang Mai on Tue, 1 Dec, arriving in Samui International.Price includes taxes and charges.From £101, select.

Koh Samui.£114 per passenger.Departing Thu, 29 Oct.One-way flight with Bangkok Airways.Outbound direct flight with Bangkok Airways departs from Chiang Mai on Thu, 29 Oct, arriving in Samui International.Price includes taxes and charges.From £114, select.

Koh Samui.£117 per passenger.Departing Tue, 29 Sep.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Chiang Mai on Tue, 29 Sep, arriving in Samui International.Price includes taxes and charges.From £117, select.

Koh Samui.£140 per passenger.Departing Thu, 18 Mar.One-way flight with Bangkok Airways.Outbound direct flight with Bangkok Airways departs from Chiang Mai on Thu, 18 Mar, arriving in Samui International.Price includes taxes and charges.From £140, select.

Find the cheapest month to fly from Chiang Mai to Samui International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chiang Mai to Samui International flights are currently cheapest in May.

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Chiang Mai to Samui International: Alternative routes

Compare routes from Chiang Mai to Koh Samui below. You may find an airport to fly into that's cheaper, faster, or easier than Samui International.

Samui International

3 miles from central Koh Samui

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from £55

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Chiang Mai to Koh Samui: Flight information

The things to know before you go.

Cheapest flight found	£55
Cheapest month to fly	May

Finding cheap flights from Chiang Mai to Samui International: Frequently asked questions

How much are return flights from Chiang Mai to Samui International?

The best price we found for a return flight from Chiang Mai to Samui International is £119. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Chiang Mai to Samui International?

1 hour and 46 minutes is the average flight time from Chiang Mai to Samui International.

Which airlines fly direct from Chiang Mai to Samui International?

Etihad Airways, Bangkok Airways and EVA Air fly direct from Chiang Mai to Samui International.

How many flights are there a week from Chiang Mai to Samui International?

As of September 2026, there are 38 flights per week flying from Chiang Mai to Samui International.

When is the cheapest time to fly from Chiang Mai to Samui International?

The cheapest month to fly from Chiang Mai to Samui International is usually May.

Which upcoming date is cheapest to fly from Chiang Mai Airport to Samui International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chiang Mai Airport to Samui International Airport on Friday, 28 May 2027.

Can I get a direct flight from Chiang Mai Airport to Samui International Airport?

Yes – the average flight time is 1 hour and 46 minutes.

How can I find the best flight deal to Samui International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Samui International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Koh Samui?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Koh Samui is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Chiang Mai Airport to Samui International with?

Currently, Bangkok Airways offers the cheapest flight tickets to Samui International.

Flying from Chiang Mai Airport (CNX) to Samui International Airport (USM): what you need to know

The average length of a direct flight from Chiang Mai Airport to Samui International Airport is 1 hour 45 minutes.
Chiang Mai and Koh Samui share the UTC+7 timezone. That means you won't have to change your watch on arrival.
Each week, there are 12 Chiang Mai Airport to Samui International Airport flights. If you prefer to take off early, jump on the 09:15 Bangkok Airways flight. If you'd rather make the most of your day before you fly, the latest flight is at 14:35 with Bangkok Airways.
For a smooth journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to board your CNX to USM flight.
During popular months such as January, it's best to get to the airport even earlier. Plan to arrive two hours before domestic departures and four hours ahead for an international flight whenever you're flying during a high season in general.
Getting to Koh Samui (and then discovering more of Thailand!) is a snap with Bangkok Airways. This popular carrier offers direct flights from Chiang Mai Airport to Samui International Airport.
Bangkok Airways tops the list for bookings on this route.
Bangkok Airways is the most punctual carrier offering CNX to USM flights. A reliable 92.06% of its departures on this route arrive without delay.
We make it simple to book a flight with a stopover. To see your options for tickets from Chiang Mai Airport to Samui International Airport, uncheck 'Direct flights only.' Then, pick a flight offering a stop long enough to tour your chosen city. Stopovers between CNX and USM include:
- Bangkok Suvarnabhumi Airport
- Don Mueang Airport
- Phuket Airport

How to find the cheapest flights from Chiang Mai Airport (CNX) to Samui International Airport (USM)

The cheapest price we've found for a one-way Chiang Mai Airport to Samui International Airport flight is £55. A return ticket right now is £119. Depending on the availability when you book, these fares may change.
To get cheap tickets from CNX to USM, reserve your trip one month ahead of your planned departure.
The cheapest month for flights from Chiang Mai Airport to Samui International Airport is June. Use the 'Whole month' tool to find the lowest prices if you have a flexible schedule.
You won't have to check every day to find out if fares have dropped when you set up a Price Alert. We'll update you as soon as there's a change in price on cheap flights from CNX to USM.
Tailor your flights using filters. Choose your preferred departure and arrival times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from Chiang Mai Airport to Samui International Airport.

Handy information about Chiang Mai Airport (CNX)

When it comes to Chiang Mai Airport's on-time performance, data shows 73% of flights arrive within the expected timeframe.
Central Chiang Mai to Chiang Mai Airport is approximately 3 kms (2 miles). Depending on traffic, it'll take you about 15 minutes to get there if you're driving, catching a taxi or ride-sharing.
Expect a trip time of roughly 25 minutes when using public transport.
Have an early flight from Chiang Mai Airport to Samui International Airport? Avoid rushing to the terminal (and get some extra shut-eye) by picking one of these hotels near CNX:

Arriving at Samui International Airport (USM)

If you're landing on a late Chiang Mai Airport to Samui International Airport flight, nothing tops the convenience of staying close to the terminal. Collect your bags from the carousel and then be tucked up in bed not long after at one of these options near USM:
Hit the road running by picking up a Samui International Airport rental car. Grab your wheels from asap car rental, Hertz or Drive Car Rental and explore beyond Koh Samui's main sights.
To get the best deal, book your vehicle from Samui International Airport about four weeks ahead.

When to fly to Samui International Airport (USM)

It's time to choose your travel dates for your flight from Chiang Mai Airport to Samui International Airport. December is the busiest month to visit Koh Samui. If you prefer a more laid-back vibe, go in May.
Book your flight from Chiang Mai Airport to Samui International Airport for May if you'd like to go to Koh Samui during its warmest month. You can expect temperatures of between 25ºC and 30ºC.
Search for cheap tickets from CNX to USM in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 23ºC and 28ºC on average.

Explore more of Thailand

Koh Samui has plenty to offer, but there are so many other parts of Thailand waiting to be explored. Around 467 kms (290 miles) north of Koh Samui, a visit to Bangkok will keep you busy. Start with popular sights like Grand Palace, Wat Phra Kaew and Songkran Festival Silom.