In terms of precipitation, rainfall in Cambodia ranges from 0.0 - 250.0 inches per month. October is typically the wettest month, when rainfall can reach 250.0 mm. January is typically the driest time to visit Cambodia when rainfall is around 0.0 mm.

If weather is an important factor for your trip to Cambodia, 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 29.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 25.0 C).

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

When flying from Ko Samui to Cambodia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Ko Samui to Cambodia?

Located just 3.3 km from the city centre, Ko Samui (USM) is the airport most travellers will use when flying to Cambodia from Ko Samui.

Can I find deals for flights from Ko Samui to Cambodia that include hotel bookings?

Yes. In addition to deals on Ko Samui to Cambodia flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Ko Samui to Cambodia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ko Samui to Cambodia.

Can I find deals for business class flights from Ko Samui to Cambodia?

Yes. Cheapflights offers flight deals from Ko Samui to Cambodia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

฿6,806+ Cheap Flights from Ko Samui to Cambodia

Cheap flight deals from Ko Samui to Cambodia

Enter your travel dates to find the best prices.

One-way

One-way flights from Ko Samui to Cambodia
Search for one-way flight options from Ko Samui to Cambodia. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Thu 19/1111:00 -

1 stop24h 00m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 8/9฿6,806

Sun 25/1008:15 -

1 stop7h 50m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 5/9฿7,168

Thu 17/917:00 -

2 stops18h 10m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 8/9฿7,398

Mon 8/209:20 -

1 stop6h 45m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 7/9฿7,924

Tue 29/917:00 -

2 stops18h 10m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 8/9฿8,220

Mon 28/917:00 -

2 stops18h 10m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 7/9฿8,253

Tue 26/106:45 -

1 stop13h 15m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 6/9฿8,286

Sun 27/917:00 -

2 stops18h 10m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 7/9฿8,417

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Ko SamuiSiem Reap

USM Ko Samui - SAI Siem Reap–Angkor Intl

USMSAI

Ko Samui

Thu 19/11

07:00-08:45

1 stop25h 45m

Siem Reap–Angkor Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿7,135

Ko SamuiSiem Reap

USM Ko Samui - SAI Siem Reap–Angkor Intl

USMSAI

Ko Samui

Sun 25/10

08:15-16:05

1 stop7h 50m

Siem Reap–Angkor Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿7,168

Ko SamuiSiem Reap

USM Ko Samui - SAI Siem Reap–Angkor Intl

USMSAI

Ko Samui

Mon 8/3

07:00-09:15

1 stop26h 15m

Siem Reap–Angkor Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿7,398

Fastest return journey

Ko SamuiSiem Reap

USM Ko Samui - SAI Siem Reap–Angkor Intl

USMSAI

Ko Samui

Mon 8/2

09:20-16:05

1 stop6h 45m

Siem Reap–Angkor Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿7,924

Ko SamuiSiem Reap

USM Ko Samui - SAI Siem Reap–Angkor Intl

USMSAI

Ko Samui

Tue 29/9

17:00-11:10

2 stops18h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿8,220

Ko SamuiSiem Reap

USM Ko Samui - SAI Siem Reap–Angkor Intl

USMSAI

Ko Samui

Mon 28/9

17:00-11:10

2 stops18h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿8,253

Ko SamuiSiem Reap

USM Ko Samui - SAI Siem Reap–Angkor Intl

USMSAI

Ko Samui

Tue 26/1

06:45-20:00

1 stop13h 15m

Siem Reap–Angkor Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿8,286

Ko SamuiSiem Reap

USM Ko Samui - SAI Siem Reap–Angkor Intl

USMSAI

Ko Samui

Sun 27/9

17:00-11:10

2 stops18h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

฿8,417

Flights are sorted by cheapest return flights first.

Deals found on 6/9

Sorted by cheapest first

Best time to book a flight from Ko Samui to Cambodia

Have a flexible travel schedule? Discover the best time to fly to Cambodia from Ko Samui with our price prediction graph.

USM-SAI

Estimated return 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 Ko Samui to Cambodia

USM-KH0

USM-SAI

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly from for flights from Ko Samui to Cambodia?
Located just 3.3 km from the city centre, Ko Samui (USM) is the airport most travellers will use when flying to Cambodia from Ko Samui.
Can I find deals for flights from Ko Samui to Cambodia that include hotel bookings?
Yes. In addition to deals on Ko Samui to Cambodia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ko Samui to Cambodia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ko Samui to Cambodia.
Can I find deals for business class flights from Ko Samui to Cambodia?
Yes. Cheapflights offers flight deals from Ko Samui to Cambodia 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

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Alternative routes for Ko Samui to Cambodia

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How does Cheapflights help users find flights from Ko Samui to Cambodia?

Cheapflights makes it easy to find Ko Samui to Cambodia flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Ko Samui to Cambodia?

Millions of users choose and trust Cheapflights to book the best flight deals from Ko Samui to Cambodia for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ko Samui to Cambodia with no change fees?

Certainly. Search results for flights to Cambodia from Ko Samui shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ko Samui to Cambodia become cheaper?

Yes! Start tracking prices for Ko Samui to Cambodia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ko Samui to Cambodia

One-way flights from Ko Samui to Cambodia
Search for one-way flight options from Ko Samui to Cambodia. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Search for one-way flight options from Ko Samui to Cambodia. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ko Samui to Cambodia that are best for you.

Best time to book a flight from Ko Samui to Cambodia

Have a flexible travel schedule? Discover the best time to fly to Cambodia from Ko Samui with our price prediction graph.

Cheapflights Insights

Related info for your journey

What airport do you fly from for flights from Ko Samui to Cambodia?

Can I find deals for flights from Ko Samui to Cambodia that include hotel bookings?

How can I find direct flights from Ko Samui to Cambodia?

Can I find deals for business class flights from Ko Samui to Cambodia?

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 Ko Samui to Cambodia

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Cambodia by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Ko Samui to Cambodia by cabin class

Find flights from Ko Samui to Cambodia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ko Samui and Cambodia flights

Browse other Ko Samui and Cambodia flight options. Last updated on 10 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Ko Samui to Cambodia flights

Consider these flights travelling from Ko Samui to Cambodia.

Fly with Cheapflights

How does Cheapflights help users find flights from Ko Samui to Cambodia?

Why should you use Cheapflights to find cheap flight tickets from Ko Samui to Cambodia?

Can Cheapflights find flights from Ko Samui to Cambodia with no change fees?

Can Cheapflights notify me if prices for flights from Ko Samui to Cambodia become cheaper?

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Cheap flights from Ko Samui to Cambodia from ฿6,806

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ko Samui to Cambodia

One-way flights from Ko Samui to CambodiaSearch for one-way flight options from Ko Samui to Cambodia. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Search for one-way flight options from Ko Samui to Cambodia. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ko Samui to Cambodia that are best for you.

Best time to book a flight from Ko Samui to Cambodia

Have a flexible travel schedule? Discover the best time to fly to Cambodia from Ko Samui with our price prediction graph.

Cheapflights Insights

Related info for your journey

What airport do you fly from for flights from Ko Samui to Cambodia?

Can I find deals for flights from Ko Samui to Cambodia that include hotel bookings?

How can I find direct flights from Ko Samui to Cambodia?

Can I find deals for business class flights from Ko Samui to Cambodia?

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 Ko Samui to Cambodia

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Cambodia by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Ko Samui to Cambodia by cabin class

Find flights from Ko Samui to Cambodia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ko Samui and Cambodia flights

Browse other Ko Samui and Cambodia flight options. Last updated on 10 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Ko Samui to Cambodia flights

Consider these flights travelling from Ko Samui to Cambodia.

Fly with Cheapflights

How does Cheapflights help users find flights from Ko Samui to Cambodia?

Why should you use Cheapflights to find cheap flight tickets from Ko Samui to Cambodia?

Can Cheapflights find flights from Ko Samui to Cambodia with no change fees?

Can Cheapflights notify me if prices for flights from Ko Samui to Cambodia become cheaper?

100% Free

Book With Flexibility

Travel Smart

One-way flights from Ko Samui to Cambodia
Search for one-way flight options from Ko Samui to Cambodia. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.