Which airports can I use when flying from Ko Samui to Siem Reap?

Flights from Ko Samui to Siem Reap usually depart from Ko Samui (USM) and arrive at Siem Reap–Angkor Intl (SAI).

Which airports do connecting flights from Ko Samui to Siem Reap pass through?

Connecting flights from Ko Samui to Siem Reap most commonly pass through: • Bangkok Suvarnabhumi (BKK) – 64% of one-stop connections • Phuket City (HKT) – 36% of one-stop connections

Can I save money by using flexible dates for flights from Ko Samui to Siem Reap?

Yes. Flexible dates can save you up to 44% on flights from Ko Samui to Siem Reap. Wednesday is the cheapest departure day at ฿13,968 return on average, while Sunday is the most expensive at ฿24,569, a difference of ฿10,602. KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

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

A direct flight from Ko Samui to Siem Reap takes 00m, covering 999 km.

Do I need a passport to fly from Ko Samui to Siem Reap?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Ko Samui to Siem Reap changed much recently?

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿13,530 to ฿33,354. That means the highest observed fare was about 2x higher than the lowest one.

How are flight prices from Ko Samui to Siem Reap looking right now?

One-way fares from Ko Samui to Siem Reap are currently lower than usual. Average one-way flight prices are about ฿7,135, which is 23% below the typical average for this route.

How much time can I save by choosing a different stopover airport from Ko Samui to Siem Reap?

Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time of 4h 18m, compared to 4h 27m via Phuket City (HKT).

How much should I expect to pay for a Ko Samui to Siem Reap flight?

Return flights from Ko Samui to Siem Reap range from ฿15,152 to ฿16,615, with an average of ฿16,043 over the past 12 months. Anything below ฿15,152 counts as a good deal.

What is the most popular stopover airport when flying from Ko Samui to Siem Reap?

Bangkok Suvarnabhumi (BKK) is the most popular stopover for the Ko Samui to Siem Reap route. 64% of KAYAK users who booked 1-stop return journeys over the past 3 months connected via BKK.

What is the cheapest stopover airport when flying from Ko Samui to Siem Reap?

Flights via Phuket City (HKT) offer the most affordable fares, with an average return price of ฿15,143. Based on KAYAK data over the past 3 months.

When flying from Ko Samui to Siem Reap, which airport offers the shortest stopover?

Bangkok Suvarnabhumi (BKK) had the shortest average connection time for Ko Samui to Siem Reap stopovers at 2h 56m over the past 3 months.

Cheap Flights from Ko Samui to Siem Reap | KAYAK

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Cheapest return flight

฿13,530

Typical prices: ฿15,152-฿16,615

Multiple Airlines

Fri 2/11Thu 8/11

USM - SAI • 1 stop

Cheapest one-way flight

฿5,924

Typical prices: ฿7,383-฿11,791

Multiple Airlines

Fri 2/11

USM - SAI • 1 stop

Direct flights

Not available

There are currently no direct flights between Ko Samui and Siem Reap. You'll need to take a connecting flight to reach the destination.

Insights

Top stopover airports

Phuket City (HKT)

Cheapest • Avg ฿15,143 (return)

Bangkok Suvarnabhumi (BKK)

Shortest trip • 4h 18m (one-way)

Insights

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We hope you enjoy your trip to Siem Reap!

Flight Deals

Cheap Flights from Ko Samui to Siem Reap (USM-SAI)

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

Recent return flight deals from Ko Samui to Siem Reap

Mon 2 Nov - Sun 8 Nov

08:15 - 16:05USM Ko Samui-SAI Siem Reap–Angkor Intl

7h 50m1 stop Phuket City

16:50 - 07:10SAI Siem Reap–Angkor Intl-USM Ko Samui

14h 20m1 stop Bangkok Don Mueang Intl

฿13,530Multiple Airlines

Mon 16 Nov - Tue 24 Nov

08:15 - 16:05USM Ko Samui-SAI Siem Reap–Angkor Intl

7h 50m1 stop Phuket City

16:50 - 07:10SAI Siem Reap–Angkor Intl-USM Ko Samui

14h 20m1 stop Bangkok Don Mueang Intl

฿13,968Multiple Airlines

Mon 2 Nov - Sun 8 Nov

08:15 - 16:05USM Ko Samui-SAI Siem Reap–Angkor Intl

7h 50m1 stop Phuket City

11:45 - 18:25SAI Siem Reap–Angkor Intl-USM Ko Samui

6h 40m2 stops Bangkok Don Mueang Intl Phuket City

฿14,371Multiple Airlines

Mon 2 Nov - Sun 8 Nov

08:15 - 16:05USM Ko Samui-SAI Siem Reap–Angkor Intl

7h 50m1 stop Phuket City

11:45 - 18:25SAI Siem Reap–Angkor Intl-USM Ko Samui

6h 40m2 stops Bangkok Don Mueang Intl Phuket City

฿14,405Multiple Airlines

Mon 2 Nov - Sun 8 Nov

08:15 - 16:05USM Ko Samui-SAI Siem Reap–Angkor Intl

7h 50m1 stop Phuket City

11:45 - 20:25SAI Siem Reap–Angkor Intl-USM Ko Samui

8h 40m1 stop Bangkok Don Mueang Intl

฿14,506Multiple Airlines

Mon 2 Nov - Sun 8 Nov

08:15 - 16:05USM Ko Samui-SAI Siem Reap–Angkor Intl

7h 50m1 stop Phuket City

11:45 - 18:25SAI Siem Reap–Angkor Intl-USM Ko Samui

6h 40m2 stops Bangkok Don Mueang Intl Phuket City

฿14,708Multiple Airlines

Mon 2 Nov - Sun 8 Nov

08:15 - 16:05USM Ko Samui-SAI Siem Reap–Angkor Intl

7h 50m1 stop Phuket City

11:45 - 20:30SAI Siem Reap–Angkor Intl-USM Ko Samui

8h 45m1 stop Bangkok Don Mueang Intl

฿15,145Multiple Airlines

Sat 27 Feb - Sun 28 Feb

09:20 - 16:05USM Ko Samui-SAI Siem Reap–Angkor Intl

6h 45m1 stop Phuket City

19:25 - 07:10SAI Siem Reap–Angkor Intl-USM Ko Samui

11h 45m1 stop Bangkok Suvarnabhumi

฿15,516Multiple Airlines

Sat 27 Feb - Sun 28 Feb

08:50 - 20:00USM Ko Samui-SAI Siem Reap–Angkor Intl

11h 10m2 stops Chiang Mai Bangkok Don Mueang Intl

19:25 - 07:10SAI Siem Reap–Angkor Intl-USM Ko Samui

11h 45m1 stop Bangkok Suvarnabhumi

฿16,256Multiple Airlines

Mon 16 Nov - Tue 24 Nov

08:15 - 16:05USM Ko Samui-SAI Siem Reap–Angkor Intl

7h 50m1 stop Phuket City

11:45 - 18:25SAI Siem Reap–Angkor Intl-USM Ko Samui

6h 40m2 stops Bangkok Don Mueang Intl Phuket City

฿16,357Multiple Airlines

Recent last minute flight deals from Ko Samui to Siem Reap

Fri 9 Oct - Sun 11 Oct

06:55 - 16:10USM Ko Samui-SAI Siem Reap–Angkor Intl

9h 15m1 stop Bangkok Don Mueang Intl

11:55 - 19:45SAI Siem Reap–Angkor Intl-USM Ko Samui

7h 50m1 stop Bangkok Don Mueang Intl

฿17,939Multiple Airlines

Fri 9 Oct - Sun 11 Oct

06:55 - 16:10USM Ko Samui-SAI Siem Reap–Angkor Intl

9h 15m1 stop Bangkok Don Mueang Intl

14:50 - 08:15SAI Siem Reap–Angkor Intl-USM Ko Samui

17h 25m1 stop Bangkok Suvarnabhumi

฿18,477Multiple Airlines

Fri 9 Oct - Sun 11 Oct

19:00 - 11:10USM Ko Samui-SAI Siem Reap–Angkor Intl

16h 10m2 stops Phuket City Bangkok Don Mueang Intl

11:55 - 19:45SAI Siem Reap–Angkor Intl-USM Ko Samui

7h 50m1 stop Bangkok Don Mueang Intl

฿18,511Multiple Airlines

Fri 9 Oct - Sun 11 Oct

19:00 - 11:10USM Ko Samui-SAI Siem Reap–Angkor Intl

16h 10m2 stops Phuket City Bangkok Don Mueang Intl

11:55 - 19:45SAI Siem Reap–Angkor Intl-USM Ko Samui

7h 50m1 stop Bangkok Don Mueang Intl

฿18,612Multiple Airlines

Fri 9 Oct - Sun 11 Oct

08:00 - 16:10USM Ko Samui-SAI Siem Reap–Angkor Intl

8h 10m2 stops Phuket City Bangkok Don Mueang Intl

18:05 - 13:45SAI Siem Reap–Angkor Intl-USM Ko Samui

19h 40m2 stops Hanoi Noibai Bangkok Suvarnabhumi

฿27,397Multiple Airlines

Fri 9 Oct - Sun 11 Oct

17:55 - 09:00USM Ko Samui-SAI Siem Reap–Angkor Intl

15h 05m2 stops Phuket City Bangkok Suvarnabhumi

18:05 - 13:45SAI Siem Reap–Angkor Intl-USM Ko Samui

19h 40m2 stops Hanoi Noibai Bangkok Suvarnabhumi

฿29,382Multiple Airlines

Fri 9 Oct - Sun 11 Oct

17:25 - 12:25USM Ko Samui-SAI Siem Reap–Angkor Intl

19h 00m3 stops Bangkok Suvarnabhumi Ho Chi Minh City Krong Preah Sihanouk Sihanoukville

19:10 - 18:15SAI Siem Reap–Angkor Intl-USM Ko Samui

23h 05m2 stops Ho Chi Minh City Singapore Changi

฿42,542Multiple Airlines

Fri 9 Oct - Sun 11 Oct

17:25 - 12:25USM Ko Samui-SAI Siem Reap–Angkor Intl

19h 00m3 stops Bangkok Suvarnabhumi Ho Chi Minh City Krong Preah Sihanouk Sihanoukville

19:10 - 18:15SAI Siem Reap–Angkor Intl-USM Ko Samui

23h 05m2 stops Ho Chi Minh City Singapore Changi

฿42,912Multiple Airlines

Booking Insights

Price, demand, and travel trends for Ko Samui to Siem Reap flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What is the most popular stopover airport when flying from Ko Samui to Siem Reap? KAYAK data for 1-stop return journeys over the past 3 months. Only counts itineraries with the same stopover on both legs.: Bangkok Suvarnabhumi (BKK) is the most popular stopover for the Ko Samui to Siem Reap route. 64% of KAYAK users who booked 1-stop return journeys over the past 3 months connected via BKK.
What is the cheapest stopover airport when flying from Ko Samui to Siem Reap?: Flights via Phuket City (HKT) offer the most affordable fares, with an average return price of ฿15,143. Based on KAYAK data over the past 3 months.
When flying from Ko Samui to Siem Reap, which airport offers the shortest stopover?: Bangkok Suvarnabhumi (BKK) had the shortest average connection time for Ko Samui to Siem Reap stopovers at 2h 56m over the past 3 months.

Find deals

Cheapest flight	฿5,924

One-way flight from Ko Samui to Siem Reap

When to book flights from Ko Samui to Siem Reap

Are your dates flexible? Find out the best times to travel from Ko Samui to Siem Reap based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

How long is a flight from Ko Samui to Siem Reap?
A direct flight from Ko Samui to Siem Reap takes 00m, covering 999 km.
Do I need a passport to fly from Ko Samui to Siem Reap?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a Ko Samui to Siem Reap flight?
Return flights from Ko Samui to Siem Reap range from ฿15,152 to ฿16,615, with an average of ฿16,043 over the past 12 months. Anything below ฿15,152 counts as a good deal.
Have flight prices from Ko Samui to Siem Reap changed much recently?
Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿13,530 to ฿33,354. That means the highest observed fare was about 2x higher than the lowest one.
How are flight prices from Ko Samui to Siem Reap looking right now?
One-way fares from Ko Samui to Siem Reap are currently lower than usual. Average one-way flight prices are about ฿7,135, which is 23% below the typical average for this route.
Which airports can I use when flying from Ko Samui to Siem Reap?
Flights from Ko Samui to Siem Reap usually depart from Ko Samui (USM) and arrive at Siem Reap–Angkor Intl (SAI).
Which airports do connecting flights from Ko Samui to Siem Reap pass through?
Connecting flights from Ko Samui to Siem Reap most commonly pass through:

• Bangkok Suvarnabhumi (BKK) – 64% of one-stop connections
• Phuket City (HKT) – 36% of one-stop connections
Can I save money by using flexible dates for flights from Ko Samui to Siem Reap?
Yes. Flexible dates can save you up to 44% on flights from Ko Samui to Siem Reap. Wednesday is the cheapest departure day at ฿13,968 return on average, while Sunday is the most expensive at ฿24,569, a difference of ฿10,602.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.
How much time can I save by choosing a different stopover airport from Ko Samui to Siem Reap?
Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time of 4h 18m, compared to 4h 27m via Phuket City (HKT).

If your dates are flexible, aim for a Wednesday departure and avoid flying on Sunday. On this route, Wednesday flights average ฿13,968, about ฿10,602 less than Sunday fares (43% savings) based on the last 12 months.

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USM - SAI

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Everything you should know

Cheap Flights from Ko Samui to Siem Reap (USM-SAI)

Recent return flight deals from Ko Samui to Siem Reap

Recent one-way flight deals from Ko Samui to Siem Reap

Recent last minute flight deals from Ko Samui to Siem Reap

Price, demand, and travel trends for Ko Samui to Siem Reap flights

What is the most popular stopover airport when flying from Ko Samui to Siem Reap?

What is the cheapest stopover airport when flying from Ko Samui to Siem Reap?

When flying from Ko Samui to Siem Reap, which airport offers the shortest stopover?

Key details for Ko Samui to Siem Reap flights

Cheapest flight

When to book flights from Ko Samui to Siem Reap

Your Ko Samui to Siem Reap flight questions, answered

Your guide to booking Ko Samui to Siem Reap flights

More options for your flight from Ko Samui to Siem Reap

Complete your trip to Siem Reap with a hotel stay or car hire

Information on your arrival and departure airports

Cabin class types available on flights from Ko Samui to Siem Reap

Flights from domestic origins to Siem Reap

Flights to other popular destinations

Find deals for your return flight