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Cheap flights from Sydney to Siem Reap from $359

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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SAI
4 Apr — 11 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Siem Reap

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Siem Reap
Explore the most affordable flight options available from Sydney to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 March 2026.

Fri 23/1011:15
SYD
-
SAI
2 stops34h 50m
VietJet Air
Tue 3/1119:05
SAI
-
SYD
2 stops33h 00m
VietJet Air
Deal found 1/3$730
Fri 23/1011:15
SYD
-
SAI
1 stop13h 50m
Multiple Airlines
Tue 3/1116:00
SAI
-
SYD
1 stop12h 05m
Multiple Airlines
Deal found 1/3$825
Sun 22/321:50
SYD
-
SAI
1 stop15h 30m
Multiple Airlines
Fri 27/309:05
SAI
-
SYD
1 stop20h 10m
Multiple Airlines
Deal found 3/3$836
Fri 23/1015:15
SYD
-
SAI
1 stop29h 55m
Vietnam Airlines
Tue 3/1121:30
SAI
-
SYD
1 stop32h 20m
Vietnam Airlines
Deal found 28/2$860
Sun 20/910:15
SYD
-
SAI
2 stops34h 50m
VietJet Air
Sat 26/919:05
SAI
-
SYD
2 stops33h 15m
VietJet Air
Deal found 3/3$887
Sun 20/910:15
SYD
-
SAI
2 stops34h 50m
Multiple Airlines
Sat 26/915:35
SAI
-
SYD
1 stop13h 45m
Multiple Airlines
Deal found 3/3$931

Find flight deals from Sydney to Siem Reap

Keep the following information in mind while searching for Sydney to Siem Reap flight deals. Data was last updated 5 March 2026.

Round-trip from

$836

One-way from

$359

Popular in

December

Cheapest in

August

Average price

$1,049
22/3-27/3
  • 22/3-27/3
  • 2 total stops
  • 35h 40m total
  • Sydney to Siem Reap
Search Deals
7/5
  • 7/5
  • 2 total stops
  • 34h 50m total
  • Sydney to Siem Reap
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($377 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($81 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney 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 647,157 searches. Data last updated 5 March 2026.
Use the filters below to find and compare flights from Sydney to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sun 22/3

21:50-09:20

1 stop15h 30m

Siem Reap–Angkor Intl

Fri 27/3

09:05-09:15

1 stop20h 10m

$836

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Thu 25/6

10:15-08:45

1 stop25h 30m

Siem Reap–Angkor Intl

Mon 13/7

19:50-08:15

1 stop33h 25m

$1,197

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Thu 25/6

10:15-18:05

2 stops34h 50m

Siem Reap–Angkor Intl

Mon 13/7

19:05-07:20

2 stops33h 15m

$1,245

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sun 5/7

20:50-09:15

1 stop15h 25m

Siem Reap–Angkor Intl

Wed 15/7

10:00-08:20

1 stop19h 20m

$1,268

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Mon 6/7

20:30-20:10

2 stops50h 40m

Siem Reap–Angkor Intl

Wed 15/7

21:10-08:00

3 stops31h 50m

$1,295

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Mon 11/5

10:15-18:05

2 stops34h 50m

$359

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Thu 7/5

10:15-18:10

1 stop34h 55m

$399

Flights are sorted by cheapest return flights first.

Deals found on 2/3

Sorted by cheapest first

Best time to book a flight from Sydney to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Sydney 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.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Siem Reap

What is the cheapest month to book a flight from Sydney to Region of Siem Reap?

Currently, March is the cheapest month in which you can book a flight from Sydney to Region of Siem Reap (average of $679). Flying from Sydney to Region of Siem Reap in January is currently the most expensive (average of $1,022). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Siem Reap

Get insights into the airlines that provide service to Siem Reap. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Siem Reap. Reviews last updated 5 March 2026.
Get a feel of what it's like to fly with Singapore Airlines and Vietnam Airlines from Sydney to Siem Reap by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,467 reviews
Check prices

Entertainment

8.0

Comfort

8.0

Food

7.8

Overall

8.2

Boarding

8.3

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very Good
1,467 reviews
Singapore Airlines
8.2
Very Good
1,467 reviews
Check prices

Entertainment

8.0

Comfort

8.0

Food

7.8

Overall

8.2

Boarding

8.3

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Vietnam Airlines
7.7
Good
237 reviews
Singapore Airlines
8.2
Very Good
1,467 reviews
Check prices

Entertainment

8.0

Comfort

8.0

Food

7.8

Overall

8.2

Boarding

8.3

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

Related info for your journey

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

  • What airport do you fly from for flights from Sydney to Siem Reap?

    For a flight from Sydney to Siem Reap, you will be flying from Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre of the city.

  • How long is the flight from Sydney to Region of Siem Reap?

    Airlines like VietJet Air fly from Sydney to Region of Siem Reap in about 34h 50m. The time it takes to get you to your destination can typically vary by up to . There are 7229 km between Sydney and Region of Siem Reap.

  • Can I find deals for flights from Sydney to Siem Reap that include hotel bookings?

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

  • How can I find direct flights from Sydney to Siem Reap?

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

  • Can I find deals for business class flights from Sydney to Siem Reap?

    Yes. Cheapflights offers flight deals from Sydney 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.

  • What is the cheapest month to book a flight from Sydney to Region of Siem Reap?

    Currently, March is the cheapest month in which you can book a flight from Sydney to Region of Siem Reap (average of $679). Flying from Sydney to Region of Siem Reap in January is currently the most expensive (average of $1,022). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sydney to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to Siem Reap flights
Sydney to Phnom Penh flights
Coolangatta to Siem Reap flights

Top 2 airlines flying from Sydney to Siem Reap

Discover the top 2 airlines that operate flights from Sydney to Siem Reap. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 5 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Vietnam AirlinesCheapest$712Average$925FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Singapore AirlinesCheapest$815Average$1,388FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

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 Sydney to Siem Reap?

When you search for this flight from Sydney to Siem Reap, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Siem Reap from Sydney.

Can Cheapflights find flights from Sydney 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 Sydney 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 Sydney to Siem Reap become cheaper?

Of course! You can now track prices for flights from Sydney to Siem Reap and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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