321 € Cheap Flights from Siem Reap–Angkor (SAI) to Samui International (USM)

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Cheapest deal321 €

Cheapest monthSeptember

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Flight deals from Siem Reap–Angkor to Samui International

Looking for a cheap last-minute deal or the best return flight from Siem Reap–Angkor to Samui International? Find the lowest prices on one-way and return tickets right here.

Koh Samui.321 € per passenger.Departing Thu, 3 Sep, returning Thu, 10 Sep.Return flight with Thai AirAsia and Bangkok Airways.Outbound indirect flight with Thai AirAsia, departs from Siem Reap–Angkor on Thu, 3 Sep, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Thu, 10 Sep, arriving in Siem Reap–Angkor .Price includes taxes and charges.From 321 €, select.

Koh Samui.376 € per passenger.Departing Mon, 1 Dec, returning Mon, 8 Dec.Return flight with Thai AirAsia and Bangkok Airways.Outbound indirect flight with Thai AirAsia, departs from Siem Reap–Angkor on Mon, 1 Dec, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Mon, 8 Dec, arriving in Siem Reap–Angkor .Price includes taxes and charges.From 376 €, select.

Koh Samui.377 € per passenger.Departing Wed, 14 Jan, returning Wed, 21 Jan.Return flight with Thai AirAsia and Bangkok Airways.Outbound indirect flight with Thai AirAsia, departs from Siem Reap–Angkor on Wed, 14 Jan, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Wed, 21 Jan, arriving in Siem Reap–Angkor .Price includes taxes and charges.From 377 €, select.

Koh Samui.404 € per passenger.Departing Sun, 8 Feb, returning Sun, 15 Feb.Return flight with Thai AirAsia and Bangkok Airways.Outbound indirect flight with Thai AirAsia, departs from Siem Reap–Angkor on Sun, 8 Feb, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sun, 15 Feb, arriving in Siem Reap–Angkor .Price includes taxes and charges.From 404 €, select.

Koh Samui.409 € per passenger.Departing Sun, 30 Nov, returning Sun, 7 Dec.Return flight with Thai AirAsia and Bangkok Airways.Outbound indirect flight with Thai AirAsia, departs from Siem Reap–Angkor on Sun, 30 Nov, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sun, 7 Dec, arriving in Siem Reap–Angkor .Price includes taxes and charges.From 409 €, select.

Koh Samui.427 € per passenger.Departing Tue, 13 Oct, returning Sun, 18 Oct.Return flight with Bangkok Airways.Outbound indirect flight with Bangkok Airways, departs from Siem Reap–Angkor on Tue, 13 Oct, arriving in Samui International.Inbound indirect flight with Bangkok Airways, departs from Samui International on Sun, 18 Oct, arriving in Siem Reap–Angkor .Price includes taxes and charges.From 427 €, select.

Find the cheapest month to fly from Siem Reap–Angkor to Samui International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Siem Reap–Angkor to Samui International flights are currently cheapest in September.

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Siem Reap–Angkor to Samui International: Alternative routes

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

Finding cheap flights from Siem Reap–Angkor to Samui International: Frequently asked questions

How much are return flights from Siem Reap–Angkor to Samui International?

The best price we found for a return flight from Siem Reap–Angkor to Samui International is 321 €. 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.

Which airlines fly direct from Siem Reap–Angkor to Samui International?

Currently, there are no airlines that fly direct from Siem Reap–Angkor to Samui International. But we found flights with one or more stops from 321 €.

How many flights are there a week from Siem Reap–Angkor to Samui International?

As of November 2025, there are no flights flying from Siem Reap–Angkor to Samui International.

When is the cheapest time to fly from Siem Reap–Angkor to Samui International?

The cheapest month to fly from Siem Reap–Angkor to Samui International is usually September.

Which upcoming date is cheapest to fly from Siem Reap–Angkor Airport to Samui International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Siem Reap–Angkor Airport to Samui International Airport on Thursday, 3 September 2026.

Can I get a direct flight from Siem Reap–Angkor Airport to Samui International Airport?

No airlines currently offer direct flights between Siem Reap–Angkor Airport and Samui International Airport. Most routes have one or more stops.

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 Siem Reap–Angkor Airport to Samui International with?

Currently, Thai AirAsia offers the cheapest flight tickets to Samui International.

Travelling from Siem Reap-Ankor International Airport (SAI) to Koh Samui Airport (USM): what you need to know

For a smooth journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This ensures you have enough time to catch your SAI to USM flight.
You'll likely experience longer queues in popular months such as April. Arriving up to four hours ahead of an international flight and two hours for a domestic departure is a good idea.
Explore another city along the way or simply break up your flight with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from Siem Reap-Ankor International Airport to Koh Samui Airport. Many passengers pass through Suvarnabhumi Airport when flying between SAI and USM.

How to find the cheapest flights from Siem Reap-Ankor International Airport (SAI) to Koh Samui Airport (USM)

Currently, 152 € is the lowest price we've seen for a one-way Siem Reap-Ankor International Airport to Koh Samui Airport flight. The best price for a return plane ticket is 321 €. Remember that fares may change due to availability when booking.
To find cheap tickets from SAI to USM, book ahead. Airlines tend to offer their best fares when flights are first made available.
If you're flexible with your travel dates, use the 'Whole month' search tool. It'll show you the cheapest price in each month when searching for a flight from Siem Reap-Ankor International Airport to Koh Samui Airport.
Getting your hands on cheap flights from SAI to USM is a piece of cake with Price Alerts. Simply create one of these automatic alerts and we'll get in touch when a lower fare pops up.
Select your preferred departure and arrival times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to find the best deals on flights from Siem Reap-Ankor International Airport to Koh Samui Airport.

Handy information about Siem Reap-Ankor International Airport (SAI)

80.01% of flights leaving Siem Reap-Ankor International Airport reach their destination on schedule. Given its strong performance rating, you're unlikely to face delays when flying out of SAI.
To get to Siem Reap-Ankor International Airport from central Siem Reap, it takes around 1 hour if you're going by car. This depends on traffic though. It's approximately 48 kilometres from the airport to the city centre.
Want a hotel to stay in before your flight from Siem Reap-Ankor International Airport to Koh Samui Airport? Check out Chansor Community Homestay 18. Get a good night's sleep here before heading to SAI.

Arriving at Koh Samui Airport (USM)

The last thing you want is a lengthy journey to your hotel if you're getting in late on a Siem Reap-Ankor International Airport to Koh Samui Airport flight. Stay at one of these accommodation options near USM instead:
Grab a Koh Samui Airport rental car and discover Koh Samui and beyond with your own wheels. Asap car hire, Hertz and Drive Car Hire are popular providers you can book with here.
Reserving your vehicle from Koh Samui Airport around four weeks ahead can help you secure the lowest rate.

Getting from Koh Samui Airport (USM) to central Koh Samui

Koh Samui Airport to central Koh Samui is roughly 3 kilometres. Journey times will vary depending on traffic conditions and the time of day, so checking a navigation app for live updates is a good idea.

When to fly to Koh Samui Airport (USM)

It's time to pick your dates for your flight from Siem Reap-Ankor International Airport to Koh Samui Airport. July is the busiest month to visit Koh Samui. If you want a more relaxed vibe, go in February.

Explore more of Thailand

Bangkok is just one of the many places in Thailand waiting to be discovered once you've taken in the sights of Koh Samui. Around 467 kilometres away to the north, top sights here include Grand Palace, Wat Arun and Wat Phra Kaew.
If you're interested in discovering another major destination in Thailand, consider Chon Buri, roughly 434 kilometres north of Koh Samui. Wat Ton Son, Forest and Phra Phutthasihing Hall are key highlights.