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Cheap flights from Hong Kong to Siem Reap, Cambodia from £136

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/7. Fares are subject to change and may not be available on all flights or dates of travel.
HKG — SAI
18 Jul — 25 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Hong Kong to Siem Reap

Enter your travel dates to find the best prices.

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 18 June 2026.

Fri 31/712:25
HKG
-
SAI
1 stop22h 40m
Cambodia Airways
Sun 2/810:55
SAI
-
HKG
1 stop23h 30m
Cambodia Airways
Deal found 16/6£250
Sun 13/914:30
HKG
-
SAI
1 stop27h 40m
Vietnam Airlines
Fri 18/921:45
SAI
-
HKG
1 stop18h 40m
Vietnam Airlines
Deal found 17/6£261
Thu 30/712:25
HKG
-
SAI
1 stop26h 30m
Cambodia Airways
Thu 6/818:55
SAI
-
HKG
1 stop15h 30m
Cambodia Airways
Deal found 14/6£263
Sun 13/921:35
HKG
-
SAI
1 stop17h 45m
Multiple Airlines
Fri 18/919:05
SAI
-
HKG
2 stops18h 45m
Multiple Airlines
Deal found 17/6£315
Fri 31/720:30
HKG
-
SAI
2 stops19h 20m
Multiple Airlines
Sun 2/819:20
SAI
-
HKG
1 stop24h 15m
Multiple Airlines
Deal found 17/6£321
Fri 31/718:45
HKG
-
SAI
2 stops23h 25m
Vietnam Airlines
Sun 2/818:05
SAI
-
HKG
2 stops22h 20m
Vietnam Airlines
Deal found 17/6£389

Find flight deals from Hong Kong to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from Hong Kong (HKG) to Siem Reap (SAI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 June 2026.

Round-trip from

£250

One-way from

£136
Cambodia Airways
  • Cambodia Airways
  • 31/7-2/8
  • 2 total stops
  • 46h 10m total
  • Hong Kong to Siem Reap
Search Deals
Cambodia Airways
  • Cambodia Airways
  • 26/7
  • 1 total stop
  • 22h 40m total
  • Hong Kong to Siem Reap
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Hong Kong to Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 June 2026.
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

Depart

Return

Price

Cheapest return flight

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Fri 31/7

12:25-10:05

1 stop22h 40m

Siem Reap–Angkor Intl

Sun 2/8

10:55-11:25

1 stop23h 30m

£250

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Sun 13/9

14:30-17:10

1 stop27h 40m

Siem Reap–Angkor Intl

Fri 18/9

21:45-17:25

1 stop18h 40m

£261

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Thu 30/7

12:25-13:55

1 stop26h 30m

Siem Reap–Angkor Intl

Thu 6/8

18:55-11:25

1 stop15h 30m

£263
Fastest return journey

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Fri 31/7

12:25-16:55

1 stop5h 30m

Siem Reap–Angkor Intl

Sun 2/8

19:05-05:10

2 stops9h 05m

£323
Cheapest one-way
Fastest single journey

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Sun 26/7

12:25-10:05

1 stop22h 40m

£136

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Tue 10/11

14:30-16:10

2 stops26h 40m

£167

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Wed 11/11

14:30-16:10

2 stops26h 40m

£167

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Mon 9/11

18:40-16:10

3 stops46h 30m

£237

Flights are sorted by cheapest return flights first.

Deals found on 17/6

Sorted 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.
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

Find useful and relevant information for your journey from Hong Kong to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    There are many flights that can get you from Hong Kong to Siem Reap in 22h 40m. Fly via Cambodia Airways or Vietnam Airlines to get the fastest option. The distance from Hong Kong to Siem Reap is about 886 mi. 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 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

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

Cheapflights helps you search for flights from Hong Kong to Siem Reap via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights simply makes it quick and affordable to book flights from Hong Kong to Siem Reap by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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