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Cheap flights from Sydney to Siem Reap from $862

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Siem Reap departing on 31/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Sydney to Siem Reap

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:25 - 09:20
SYD
-
SAI
23h 55m
2 stops
Multiple Airlines Logo
21:30 - 11:30
SAI
-
SYD
34h 00m
1 stop
$862Multiple Airlines
Sat, 31 Oct - Wed, 11 Nov
Vietnam Airlines Logo
10:15 - 21:55
SYD
-
SAI
14h 40m
1 stop
Vietnam Airlines Logo
22:35 - 08:15
SAI
-
SYD
30h 40m
1 stop
$890Vietnam Airlines
Sat, 15 Aug - Sat, 29 Aug
Vietnam Airlines Logo
10:15 - 13:15
SYD
-
SAI
30h 00m
1 stop
Vietnam Airlines Logo
09:35 - 08:15
SAI
-
SYD
19h 40m
1 stop
$898Vietnam Airlines
Mon, 7 Sep - Sun, 13 Sep
Vietnam Airlines Logo
11:15 - 21:55
SYD
-
SAI
14h 40m
1 stop
Vietnam Airlines Logo
21:30 - 09:50
SAI
-
SYD
32h 20m
1 stop
$913Vietnam Airlines
Wed, 21 Oct - Sun, 15 Nov
Multiple Airlines Logo
20:35 - 14:50
SYD
-
SAI
21h 15m
2 stops
Multiple Airlines Logo
10:00 - 11:45
SAI
-
SYD
22h 45m
2 stops
$916Multiple Airlines
Sun, 6 Sep - Sun, 13 Sep
Multiple Airlines Logo
08:35 - 14:50
SYD
-
SAI
33h 15m
1 stop
Multiple Airlines Logo
19:05 - 11:45
SAI
-
SYD
37h 40m
2 stops
$925Multiple Airlines
Mon, 7 Sep - Sun, 13 Sep
Multiple Airlines Logo
10:45 - 09:20
SYD
-
SAI
26h 35m
1 stop
Multiple Airlines Logo
19:10 - 20:35
SAI
-
SYD
21h 25m
1 stop
$936Multiple Airlines
Sun, 1 Nov - Sun, 8 Nov
Singapore Airlines Logo
08:05 - 15:55
SYD
-
SAI
11h 50m
1 stop
Singapore Airlines Logo
16:45 - 11:50
SAI
-
SYD
15h 05m
1 stop
$1,625Singapore Airlines
Sat, 16 Jan - Thu, 28 Jan
Singapore Airlines Logo
19:10 - 09:50
SYD
-
SAI
18h 40m
1 stop
Singapore Airlines Logo
16:45 - 11:50
SAI
-
SYD
15h 05m
1 stop
$1,625Singapore Airlines
Thu, 14 Jan - Wed, 27 Jan
Singapore Airlines Logo
19:10 - 09:50
SYD
-
SAI
18h 40m
1 stop
Singapore Airlines Logo
16:45 - 11:50
SAI
-
SYD
15h 05m
1 stop
$1,625Singapore Airlines
Fri, 15 Jan - Thu, 28 Jan

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Vietnam Airlines flights from Sydney to Siem Reap

Our best Vietnam Airlines deals on Sydney to Siem Reap flight tickets
Vietnam Airlines
4 Aug
SYD10:15Sydney Kingsford Smith
11h 05m
1 stop
SAI18:20Siem Reap–Angkor Intl
11 Aug
SAI19:15Siem Reap–Angkor Intl
34h 00m
1 stop
SYD08:15Sydney Kingsford Smith
$896
Vietnam Airlines
7 Sept
SYD10:15Sydney Kingsford Smith
30h 00m
1 stop
SAI13:15Siem Reap–Angkor Intl
13 Sept
SAI09:35Siem Reap–Angkor Intl
19h 40m
1 stop
SYD08:15Sydney Kingsford Smith
$898
Vietnam Airlines
21 Oct
SYD11:15Sydney Kingsford Smith
14h 40m
1 stop
SAI21:55Siem Reap–Angkor Intl
15 Nov
SAI21:30Siem Reap–Angkor Intl
32h 20m
1 stop
SYD09:50Sydney Kingsford Smith
$913

momondo 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, momondo users made 78,305 searches. Data last updated 28 July 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

Cheapest return flight

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sat 31/10

13:25-09:20

2 stops23h 55m

Siem Reap–Angkor Intl

Wed 11/11

21:30-11:30

1 stop34h 00m

$862

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sat 15/8

10:15-21:55

1 stop14h 40m

Siem Reap–Angkor Intl

Sat 29/8

22:35-08:15

1 stop30h 40m

$890

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Mon 7/9

10:15-13:15

1 stop30h 00m

Siem Reap–Angkor Intl

Sun 13/9

09:35-08:15

1 stop19h 40m

$898

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Wed 21/10

11:15-21:55

1 stop14h 40m

Siem Reap–Angkor Intl

Sun 15/11

21:30-09:50

1 stop32h 20m

$913

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sun 6/9

20:35-14:50

2 stops21h 15m

Siem Reap–Angkor Intl

Sun 13/9

10:00-11:45

2 stops22h 45m

$916

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Mon 7/9

08:35-14:50

1 stop33h 15m

Siem Reap–Angkor Intl

Sun 13/9

19:05-11:45

2 stops37h 40m

$925

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sun 1/11

10:45-09:20

1 stop26h 35m

Siem Reap–Angkor Intl

Sun 8/11

19:10-20:35

1 stop21h 25m

$936
Fastest return journey

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Sat 16/1

08:05-15:55

1 stop11h 50m

Siem Reap–Angkor Intl

Thu 28/1

16:45-11:50

1 stop15h 05m

$1,625

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Thu 14/1

19:10-09:50

1 stop18h 40m

Siem Reap–Angkor Intl

Wed 27/1

16:45-11:50

1 stop15h 05m

$1,625

SydneySiem Reap

SYD - SAI

SYDSAI

Sydney Kingsford Smith

Fri 15/1

19:10-09:50

1 stop18h 40m

Siem Reap–Angkor Intl

Thu 28/1

16:45-11:50

1 stop15h 05m

$1,625

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Siem Reap from

How to get the cheapest flight ticket from Sydney to Siem Reap

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Siem Reap?

The cheapest month to fly to Siem Reap from Sydney is in August. Flight prices, which tend to average around $849, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Siem Reap from Sydney during June instead. Flights to Siem Reap in June, while not as cheap as those in August, still average around $885.

How have Sydney to Siem Reap flight prices changed over time?

As of July 2026, prices for Sydney to Siem Reap flights are approximately 41% cheaper when compared to flights at the same time last year.

When to book flights from Sydney to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Sydney to Siem Reap (SYD to SAI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sydney to Siem Reap

Fastest flight time

11h 05m

Direct flights

None
The fastest flight from Sydney to Siem Reap takes 11h 05m
There are no direct flights from Sydney to Siem Reap. There are no popular flight routes from Sydney to Siem Reap.
Search flight deals

Frequently asked questions about flying from Sydney to Siem Reap

  • How far is Sydney Kingsford Smith to Siem Reap–Angkor Intl by plane?

    Siem Reap–Angkor Intl is 7251.8 km away from Sydney Kingsford Smith. In terms of flight time, this usually takes a little over 11h 05m.

  • When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Siem Reap–Angkor Intl Airport?

    Prices for flights from Sydney Kingsford Smith Airport to Siem Reap–Angkor Intl Airport are updated daily.

  • How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Siem Reap–Angkor Intl Airport?

  • How old do you have to be to fly from Sydney Kingsford Smith Airport to Siem Reap–Angkor Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Siem Reap–Angkor Intl Airport.

  • What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

    The necessary travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sydney to Siem Reap?

Best airlines flying from Sydney to Siem Reap

Compare and see reviews for airlines that fly from Sydney to Siem Reap with momondo
Airline
Rating
Free cancellation
Price
Vietnam AirlinesPriceFrom $791Free cancellationRating
7.7
280 reviews
Search Vietnam Airlines flights
Singapore AirlinesPriceFrom $820Free cancellationRating
8.2
1,584 reviews
Search Singapore Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Sydney to Siem Reap?

Finding the right flight to Siem Reap from Sydney is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Siem Reap quick and easy, saving you time and money.

Can I find flights from Sydney to Siem Reap with flexible booking policies on momondo?

Flights from Sydney to Siem Reap with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Sydney to Siem Reap?

momondo helps you find the best flight between Sydney and Siem Reap by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Sydney to Siem Reap right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Siem Reap, momondo offers a useful price alert feature which will track prices for flights to Siem Reap from Sydney and alert you when they change.

An easier way to manage your Siem Reap trip

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
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