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Cheap flights from Hong Kong to Siem Reap, Cambodia from £151

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 25/9. Fares are subject to change and may not be available on all flights or dates of travel.
HKG — SAI
31 May — 7 Jun1
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 1 May 2026.

Tue 21/718:45
HKG
-
SAI
1 stop28h 10m
Vietnam Airlines
Thu 23/719:10
SAI
-
HKG
1 stop21h 15m
Vietnam Airlines
Deal found 26/4£262
Thu 2/718:45
HKG
-
SAI
1 stop24h 35m
Vietnam Airlines
Sat 4/718:05
SAI
-
HKG
1 stop18h 25m
Vietnam Airlines
Deal found 26/4£288
Mon 2/1120:20
HKG
-
SAI
3 stops25h 40m
China Eastern
Thu 12/1122:00
SAI
-
HKG
2 stops36h 40m
China Eastern
Deal found 30/4£296
Thu 7/518:30
HKG
-
SAI
1 stop15h 45m
Multiple Airlines
Sun 10/519:20
SAI
-
HKG
1 stop24h 15m
Multiple Airlines
Deal found 27/4£314
Mon 17/818:10
HKG
-
SAI
2 stops51h 00m
China Eastern
Fri 21/821:10
SAI
-
HKG
2 stops43h 00m
China Eastern
Deal found 27/4£347
Thu 2/718:45
HKG
-
SAI
1 stop24h 35m
Multiple Airlines
Sat 4/717:20
SAI
-
HKG
2 stops10h 35m
Multiple Airlines
Deal found 26/4£360
Fri 8/514:30
HKG
-
SAI
2 stops28h 50m
Vietnam Airlines
Sat 16/518:05
SAI
-
HKG
1 stop18h 25m
Vietnam Airlines
Deal found 28/4£428

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 1 May 2026.

Round-trip from

£262

One-way from

£151
Vietnam Airlines
  • Vietnam Airlines
  • 21/7-23/7
  • 2 total stops
  • 49h 25m total
  • Hong Kong to Siem Reap
Search Deals
Cambodia Angkor Air
  • Cambodia Angkor Air
  • 25/9
  • 1 total stop
  • 14h 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 1 May 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

Tue 21/7

18:45-21:55

1 stop28h 10m

Siem Reap–Angkor Intl

Thu 23/7

19:10-17:25

1 stop21h 15m

£262

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Thu 2/7

18:45-18:20

1 stop24h 35m

Siem Reap–Angkor Intl

Sat 4/7

18:05-13:30

1 stop18h 25m

£288

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Mon 17/8

18:10-20:10

2 stops51h 00m

Siem Reap–Angkor Intl

Fri 21/8

21:10-17:10

2 stops43h 00m

£347
Fastest return journey

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Thu 2/7

18:45-18:20

1 stop24h 35m

Siem Reap–Angkor Intl

Sat 4/7

17:20-04:55

2 stops10h 35m

£360
Cheapest one-way
Fastest single journey

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Thu 24/9

14:30-17:10

1 stop27h 40m

£163

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Mon 21/9

17:05-20:10

3 stops52h 05m

£290

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Tue 22/9

07:30-20:10

3 stops37h 40m

£290

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Thu 24/9

09:45-20:10

3 stops35h 25m

£317

Flights are sorted by cheapest return flights first.

Deals found on 28/4

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 28h 10m. Fly via Vietnam Airlines or China Eastern 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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