How long is the flight from Hong Kong to Siem Reap?

A quick flight from Hong Kong to Siem Reap can take about 15h. Vietnam Airlines provides one of the quickest options available for as low as HK$2,612. The distance from Hong Kong to Siem Reap is about 1426 km.

What is the cheapest airline to fly from Hong Kong to Siem Reap round-trip?

Currently priced at HK$2,282, Vietnam Airlines will fly you from Hong Kong to Siem Reap and back. In addition to Vietnam Airlines, many other airlines offer competitively priced options for your trip.

In terms of precipitation, rainfall in Siem Reap ranges from 0.0 - 260.0 inches per month. September is typically the wettest month, when rainfall can reach 260.0 mm. January is typically the driest time to visit Siem Reap when rainfall is around 0.0 mm.

If weather is an important factor for your trip to Siem Reap, 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 24.0 C).

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

When flying from Hong Kong to Siem Reap, 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 Hong Kong to Siem Reap that include hotel bookings?

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

How can I find direct flights from Hong Kong to Siem Reap?

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

Can I find deals for business class flights from Hong Kong to Siem Reap?

Yes. Cheapflights offers flight deals from Hong Kong to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

HK$1,451+ Cheap Flights from Hong Kong to Siem Reap, Cambodia

Cheap flight deals from Hong Kong to Siem Reap

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Hong Kong to Siem Reap
Explore the most affordable flight options available from Hong Kong to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 September 2026.

Sun 20-918:45 -

1 stop15h 00m

Fri 25-918:40 -

1 stop21h 45m

Deal found 15-9HK$2,518

Thu 17-918:45 -

1 stop19h 30m

Sat 26-922:35 -

1 stop17h 50m

Deal found 14-9HK$2,526

Mon 19-1018:45 -

1 stop15h 00m

Fri 23-1009:35 -

1 stop6h 50m

Deal found 18-9HK$2,542

Thu 17-918:45 -

1 stop19h 30m

Fri 25-918:40 -

1 stop21h 45m

Deal found 15-9HK$2,565

Wed 21-1018:45 -

1 stop15h 00m

Sun 25-1018:40 -

1 stop21h 45m

Deal found 18-9HK$2,605

Mon 19-1018:45 -

1 stop15h 00m

Mon 26-1017:55 -

1 stop18h 35m

Deal found 18-9HK$2,612

Sat 19-918:45 -

1 stop15h 00m

Mon 28-919:40 -

1 stop20h 45m

Deal found 16-9HK$2,628

Fri 23-1018:45 -

1 stop15h 00m

Fri 30-1017:55 -

1 stop18h 35m

Deal found 14-9HK$2,659

Wed 21-1018:45 -

1 stop15h 00m

Mon 26-1017:05 -

2 stops19h 25m

Deal found 18-9HK$2,691

Mon 2-1118:40 -

1 stop24h 00m

Mon 9-1118:40 -

1 stop21h 45m

Deal found 18-9HK$2,699

Mon 23-1118:40 -

1 stop24h 00m

Sun 29-1117:55 -

1 stop18h 35m

Deal found 14-9HK$2,722

Find flight deals from Hong Kong to Siem Reap

Round-trip from	HK$2,518
One-way from	HK$1,451

Vietnam Airlines
5-10-14-10
2 total stops
26h 20m total
Hong Kong to Siem Reap

Search Deals

9-10-31-12
1 total stop
6h 00m total
Hong Kong to Siem Reap

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Hong Kong to Siem Reap that are best for you.

Fly from

Fly to

Route

Departure

Return

Price

Cheapest return flight

Fastest return journey

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Sun 7-3

21:25-18:35

1 stop22h 10m

Siem Reap–Angkor Intl

Wed 31-12

00:00-01:00

Nonstop0h 00m

HK$1,561

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Fri 20-11

18:40-17:40

1 stop24h 00m

Siem Reap–Angkor Intl

Wed 31-12

00:00-01:00

Nonstop0h 00m

HK$1,632

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Wed 9-12

18:40-17:40

1 stop24h 00m

Siem Reap–Angkor Intl

Wed 31-12

00:00-01:00

Nonstop0h 00m

HK$1,632

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Mon 12-10

19:50-17:10

2 stops22h 20m

Siem Reap–Angkor Intl

Wed 31-12

00:00-01:00

Nonstop0h 00m

HK$1,718

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Wed 21-10

18:45-08:45

1 stop15h 00m

Siem Reap–Angkor Intl

Mon 26-10

18:40-17:25

1 stop21h 45m

HK$2,612

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Mon 19-10

18:45-08:45

1 stop15h 00m

Siem Reap–Angkor Intl

Mon 26-10

17:55-13:30

1 stop18h 35m

HK$2,612

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Tue 1-12

14:30-19:40

1 stop6h 10m

Siem Reap–Angkor Intl

Sat 12-12

18:40-17:25

1 stop21h 45m

HK$2,895

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Tue 17-11

14:30-19:40

1 stop6h 10m

Siem Reap–Angkor Intl

Mon 23-11

18:40-17:25

1 stop21h 45m

HK$2,895

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Tue 17-11

18:40-20:30

1 stop26h 50m

Siem Reap–Angkor Intl

Fri 27-11

21:30-17:25

1 stop18h 55m

HK$2,895

Hong KongSiem Reap

HKG Hong Kong Intl - SAI Siem Reap–Angkor Intl

HKGSAI

Hong Kong Intl

Mon 16-11

14:30-16:55

1 stop27h 25m

Siem Reap–Angkor Intl

Sat 21-11

21:30-17:25

1 stop18h 55m

HK$2,895

Flights are sorted by cheapest return flights first.

Deals found on 15-9

Showing 1-10 of 13 resultsSorted by cheapest first

Best time to book a flight from Hong Kong to Siem Reap

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

HKG-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.

Reviews of airlines servicing Siem Reap

Get a feel of what it's like to fly with Vietnam Airlines from Hong Kong to Siem Reap by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Vietnam Airlines

7.7

Good

288 reviews

Check prices

Reviews

1 / 16

2.0

Mediocre

Stephen,Apr 2026

SGN - DAD

45 minutes late. Bottle of water and that’s about it.

Vietnam Airlines

7.7

Good

288 reviews

Vietnam Airlines

7.7

Good

288 reviews

Check prices

Reviews

1 / 16

2.0

Mediocre

Stephen,Apr 2026

SGN - DAD

45 minutes late. Bottle of water and that’s about it.

Related info for your journey

How long is the flight from Hong Kong to Siem Reap?
A quick flight from Hong Kong to Siem Reap can take about 15h. Vietnam Airlines provides one of the quickest options available for as low as HK$2,612. The distance from Hong Kong to Siem Reap is about 1426 km.
What is the cheapest airline to fly from Hong Kong to Siem Reap round-trip?
Currently priced at HK$2,282, Vietnam Airlines will fly you from Hong Kong to Siem Reap and back. In addition to Vietnam Airlines, many other airlines offer competitively priced options for your trip.
Can I find deals for flights from Hong Kong to Siem Reap that include hotel bookings?
Yes. In addition to deals on Hong Kong to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Hong Kong to Siem Reap?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hong Kong to Siem Reap.
Can I find deals for business class flights from Hong Kong to Siem Reap?
Yes. Cheapflights offers flight deals from Hong Kong to Siem Reap 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

Browse thousands of different options on Cheapflights for your next trip

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Popular flights

Fly from Hong Kong to Siem Reap on these airlines

Vietnam Airlines flights from Hong Kong Intl to Siem Reap–Angkor Intl

Top airline flying from Hong Kong to Siem Reap

Airline	Cheapest	Average	Flexibility	On-time
Vietnam Airlines	CheapestHK$2,282	AverageHK$4,703	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights

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How does Cheapflights help users find flights from Hong Kong to Siem Reap?

Cheapflights makes it easy to find Hong Kong to Siem Reap 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 Hong Kong to Siem Reap?

Millions of users choose and trust Cheapflights to book the best flight deals from Hong Kong to Siem Reap 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 Hong Kong to Siem Reap with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Hong Kong to Siem Reap, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Hong Kong to Siem Reap become cheaper?

Yes! Start tracking prices for Hong Kong to Siem Reap 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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Cheap flights from Hong Kong to Siem Reap, Cambodia from HK$1,451

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9-10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Hong Kong to Siem Reap

Cheapest flights from Hong Kong to Siem ReapExplore the most affordable flight options available from Hong Kong to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 September 2026.

Explore the most affordable flight options available from Hong Kong to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 September 2026.

Best flights from Hong Kong to Siem ReapDiscover carefully curated flight deals from Hong Kong to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 September 2026.

Discover carefully curated flight deals from Hong Kong to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 September 2026.

Last-minute flights from Hong Kong to Siem ReapDiscover last-minute flight deals from Hong Kong to Siem Reap. Data last updated 19 September 2026 and is based on user searches.

Discover last-minute flight deals from Hong Kong to Siem Reap. Data last updated 19 September 2026 and is based on user searches.

One-way flights from Hong Kong to Siem ReapSearch for one-way flight options from Hong Kong to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 19 September 2026.

Search for one-way flight options from Hong Kong to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 19 September 2026.

Find flight deals from Hong Kong to Siem Reap

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Hong Kong to Siem Reap that are best for you.

Best time to book a flight from Hong Kong to Siem Reap

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

Reviews of airlines servicing Siem Reap

Get a feel of what it's like to fly with Vietnam Airlines from Hong Kong to Siem Reap by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Hong Kong to Siem Reap?

What is the cheapest airline to fly from Hong Kong to Siem Reap round-trip?

Can I find deals for flights from Hong Kong to Siem Reap that include hotel bookings?

How can I find direct flights from Hong Kong to Siem Reap?

Can I find deals for business class flights from Hong Kong to Siem Reap?

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.

Fly from Hong Kong to Siem Reap on these airlines

Choose from the following airlines for your flight from Hong Kong to Siem Reap. Flights are based on user searches made on Cheapflights and were last updated on 19 September 2026.

Complete your trip

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

Direct flights to Cambodia

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

Search flights from Hong Kong to Siem Reap by cabin class

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

Hong Kong and Siem Reap flights

Browse other Hong Kong and Siem Reap flight options. Last updated on 19 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top airline flying from Hong Kong to Siem Reap

Fly with Cheapflights

How does Cheapflights help users find flights from Hong Kong to Siem Reap?

Why should you use Cheapflights to find cheap flight tickets from Hong Kong to Siem Reap?

Can Cheapflights find flights from Hong Kong to Siem Reap with no change fees?

Can Cheapflights notify me if prices for flights from Hong Kong to Siem Reap become cheaper?

100% Free

Book With Flexibility

Travel Smart

Cheapest flights from Hong Kong to Siem Reap
Explore the most affordable flight options available from Hong Kong to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 September 2026.

Best flights from Hong Kong to Siem Reap
Discover carefully curated flight deals from Hong Kong to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 September 2026.

Last-minute flights from Hong Kong to Siem Reap
Discover last-minute flight deals from Hong Kong to Siem Reap. Data last updated 19 September 2026 and is based on user searches.

One-way flights from Hong Kong to Siem Reap
Search for one-way flight options from Hong Kong to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 19 September 2026.