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Cheap flights from Hong Kong to Siem Reap, Cambodia from £143

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 26/3. Fares are subject to change and may not be available on all flights or dates of travel.
HKG — SAI
19 Apr — 26 Apr1
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 20 March 2026.

Tue 21/421:15
HKG
-
SAI
1 stop23h 55m
China Eastern
Fri 1/521:10
SAI
-
HKG
1 stop22h 05m
China Eastern
Deal found 17/3£220
Mon 20/418:10
HKG
-
SAI
2 stops51h 00m
China Eastern
Fri 1/521:10
SAI
-
HKG
1 stop22h 05m
China Eastern
Deal found 17/3£238
Sun 20/1214:30
HKG
-
SAI
1 stop27h 25m
Vietnam Airlines
Tue 29/1218:40
SAI
-
HKG
1 stop21h 45m
Vietnam Airlines
Deal found 16/3£264
Sat 18/418:45
HKG
-
SAI
1 stop24h 35m
Vietnam Airlines
Sun 26/419:10
SAI
-
HKG
1 stop21h 15m
Vietnam Airlines
Deal found 17/3£266
Wed 22/414:30
HKG
-
SAI
2 stops26h 55m
Vietnam Airlines
Sat 25/418:05
SAI
-
HKG
1 stop18h 25m
Vietnam Airlines
Deal found 17/3£273
Tue 21/414:30
HKG
-
SAI
1 stop27h 40m
Vietnam Airlines
Wed 29/419:10
SAI
-
HKG
1 stop21h 15m
Vietnam Airlines
Deal found 17/3£277
Sun 20/1214:30
HKG
-
SAI
2 stops26h 40m
Vietnam Airlines
Wed 30/1217:05
SAI
-
HKG
2 stops19h 25m
Vietnam Airlines
Deal found 16/3£278
Wed 22/414:30
HKG
-
SAI
2 stops26h 55m
Vietnam Airlines
Wed 29/417:20
SAI
-
HKG
2 stops19h 10m
Vietnam Airlines
Deal found 17/3£280
Fri 6/1117:40
HKG
-
SAI
3 stops28h 20m
China Eastern
Sat 14/1122:00
SAI
-
HKG
2 stops25h 15m
China Eastern
Deal found 15/3£286
Tue 21/414:30
HKG
-
SAI
1 stop27h 40m
Vietnam Airlines
Mon 27/419:10
SAI
-
HKG
1 stop21h 15m
Vietnam Airlines
Deal found 17/3£289

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 20 March 2026.

Round-trip from

£220

One-way from

£143
China Eastern
  • China Eastern
  • 21/4-1/5
  • 2 total stops
  • 46h 00m total
  • Hong Kong to Siem Reap
Search Deals
Vietnam Airlines
  • Vietnam Airlines
  • 26/3
  • 1 total stop
  • 23h 50m 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 20 March 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

Sun 19/4

18:45-18:20

1 stop24h 35m

Siem Reap–Angkor Intl

Thu 30/4

19:10-17:25

1 stop21h 15m

£266

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Sun 19/4

18:45-18:20

1 stop24h 35m

Siem Reap–Angkor Intl

Mon 27/4

19:10-17:25

1 stop21h 15m

£277

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Fri 24/4

14:30-16:25

2 stops26h 55m

Siem Reap–Angkor Intl

Fri 1/5

17:20-13:30

2 stops19h 10m

£280
Fastest return journey

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Fri 28/8

18:45-17:10

2 stops23h 25m

Siem Reap–Angkor Intl

Mon 31/8

18:05-17:25

2 stops22h 20m

£357

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Mon 27/4

13:35-20:10

2 stops55h 35m

Siem Reap–Angkor Intl

Fri 1/5

21:10-19:05

3 stops20h 55m

£425

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Thu 23/4

16:40-18:05

2 stops26h 25m

Siem Reap–Angkor Intl

Thu 30/4

19:05-15:40

2 stops43h 35m

£632

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Tue 21/4

16:40-18:05

2 stops50h 25m

Siem Reap–Angkor Intl

Thu 30/4

19:05-15:40

2 stops43h 35m

£662

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Thu 23/4

16:40-18:05

2 stops50h 25m

Siem Reap–Angkor Intl

Wed 29/4

19:05-15:40

2 stops19h 35m

£680

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Fri 3/4

18:45-16:25

3 stops22h 40m

Siem Reap–Angkor Intl

Mon 6/4

17:20-17:25

3 stops47h 05m

£730
Cheapest one-way

Hong KongSiem Reap

HKG - SAI

HKGSAI

Hong Kong Intl

Thu 11/6

15:05-20:10

3 stops30h 05m

£143

Flights are sorted by cheapest return flights first.

Deals found on 18/3

Showing 1-10 of 19 resultsSorted by cheapest first
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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 24h 35m. 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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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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