How long is the flight from Siem Reap to Ko Samui?

A quick flight from Siem Reap to Ko Samui can take about 10h 35m. Thai Airways provides one of the quickest options available for as low as £426. There are 386 mi between Siem Reap and Ko Samui. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

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 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

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

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

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

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

How can I find direct flights from Siem Reap to Ko Samui?

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

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

Yes. Cheapflights offers flight deals from Siem Reap 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.

£169+ Cheap Flights from Siem Reap, Cambodia to Ko Samui

Cheap flight deals from Siem Reap to Ko Samui

Enter your travel dates to find the best prices.

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Cheapest flights from Siem Reap to Ko Samui
Explore the most affordable flight options available from Siem Reap to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Fri 11/1216:50 -

1 stop4h 00m

Fri 18/1208:15 -

1 stop7h 50m

Deal found 27/10£368

Fri 4/1209:50 -

1 stop10h 35m

Sun 13/1219:40 -

1 stop13h 05m

Deal found 30/10£426

Fri 27/1119:25 -

1 stop12h 45m

Sun 6/1208:30 -

1 stop10h 00m

Deal found 26/10£490

Fri 11/1221:30 -

2 stops22h 55m

Fri 18/1207:55 -

2 stops9h 45m

Deal found 27/10£557

Find flight deals from Siem Reap to Ko Samui

Round-trip from	£368
One-way from	£169

11/12-18/12
2 total stops
11h 50m total
Siem Reap to Ko Samui

Search Deals

29/11-31/12
1 total stop
25h 35m total
Siem Reap to Ko Samui

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Siem ReapKo Samui

SAI Siem Reap–Angkor Intl - USM Ko Samui

SAIUSM

Siem Reap–Angkor Intl

Sun 29/11

16:50-07:10

2 stops14h 20m

Ko Samui

Wed 31/12

00:00-00:00

Nonstop0h 00m

£185

Fastest return journey

Siem ReapKo Samui

SAI Siem Reap–Angkor Intl - USM Ko Samui

SAIUSM

Siem Reap–Angkor Intl

Fri 11/12

16:50-20:50

1 stop4h 00m

Ko Samui

Fri 18/12

08:15-16:05

1 stop7h 50m

£368

Siem ReapKo Samui

SAI Siem Reap–Angkor Intl - USM Ko Samui

SAIUSM

Siem Reap–Angkor Intl

Fri 4/12

09:50-20:25

1 stop10h 35m

Ko Samui

Sun 13/12

19:40-08:45

1 stop13h 05m

£426

Siem ReapKo Samui

SAI Siem Reap–Angkor Intl - USM Ko Samui

SAIUSM

Siem Reap–Angkor Intl

Fri 27/11

19:25-08:10

1 stop12h 45m

Ko Samui

Sun 6/12

08:30-18:30

1 stop10h 00m

£490

Siem ReapKo Samui

SAI Siem Reap–Angkor Intl - USM Ko Samui

SAIUSM

Siem Reap–Angkor Intl

Fri 11/12

21:30-20:25

2 stops22h 55m

Ko Samui

Fri 18/12

07:55-17:40

2 stops9h 45m

£557

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Sorted by cheapest first

Best time to book a flight from Siem Reap to Ko Samui

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

SAI-USM

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.

Related info for your journey

How long is the flight from Siem Reap to Ko Samui?
A quick flight from Siem Reap to Ko Samui can take about 10h 35m. Thai Airways provides one of the quickest options available for as low as £426. There are 386 mi between Siem Reap and Ko Samui. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
Can I find deals for flights from Siem Reap to Ko Samui that include hotel bookings?
Yes. In addition to deals on Siem Reap to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Siem Reap to Ko Samui?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Siem Reap to Ko Samui.
Can I find deals for business class flights from Siem Reap to Ko Samui?
Yes. Cheapflights offers flight deals from Siem Reap 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.

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

When you search for this flight from Siem Reap to Ko Samui, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

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

Yes, we can. To see specific flights from Siem Reap to Ko Samui with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ko Samui from Siem Reap today and book when prices fit your budget.

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Cheap flights from Siem Reap, Cambodia to Ko Samui from £169

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Siem Reap to Ko Samui

Cheapest flights from Siem Reap to Ko SamuiExplore the most affordable flight options available from Siem Reap to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Explore the most affordable flight options available from Siem Reap to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Siem Reap to Ko SamuiDiscover carefully curated flight deals from Siem Reap to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from Siem Reap to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Last-minute flights from Siem Reap to Ko SamuiDiscover last-minute flight deals from Siem Reap to Ko Samui. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Siem Reap to Ko Samui. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Siem Reap to Ko SamuiSearch for one-way flight options from Siem Reap to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Search for one-way flight options from Siem Reap to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

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Best time to book a flight from Siem Reap to Ko Samui

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

Related info for your journey

How long is the flight from Siem Reap to Ko Samui?

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

How can I find direct flights from Siem Reap to Ko Samui?

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

Travelling to a place near Ko Samui?

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Alternative routes for Siem Reap to Ko Samui

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Complete your trip

Complete your trip to Ko Samui by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Thailand

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Search flights from Siem Reap to Ko Samui by cabin class

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

Other flights to Ko Samui

Explore flights to Ko Samui departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.

Siem Reap and Ko Samui flights

Browse other Siem Reap and Ko Samui flight options. Last updated on 30 October 2026.

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

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

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

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

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Book with Flexibility

Travel Smart

Cheapest flights from Siem Reap to Ko Samui
Explore the most affordable flight options available from Siem Reap to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Siem Reap to Ko Samui
Discover carefully curated flight deals from Siem Reap to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Last-minute flights from Siem Reap to Ko Samui
Discover last-minute flight deals from Siem Reap to Ko Samui. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Siem Reap to Ko Samui
Search for one-way flight options from Siem Reap to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.