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Cheap flights from Ontario to Siem Reap from $567

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Siem Reap departing on 10/27. 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 Ontario to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:45 am - 6:55 pm
ONT
-
SAI
28h 10m
2 stops
Multiple Airlines Logo
9:40 am - 6:40 pm
SAI
-
ONT
23h 00m
2 stops
$1,305Multiple Airlines
Wed, Aug 26 - Sat, Sep 12
Multiple Airlines Logo
12:45 am - 9:00 am
ONT
-
SAI
42h 15m
2 stops
Multiple Airlines Logo
12:55 pm - 6:40 pm
SAI
-
ONT
43h 45m
2 stops
$1,324Multiple Airlines
Fri, Sep 4 - Sun, Sep 13
Multiple Airlines Logo
12:45 am - 6:55 pm
ONT
-
SAI
28h 10m
2 stops
Multiple Airlines Logo
12:55 pm - 6:00 pm
SAI
-
ONT
43h 05m
2 stops
$1,332Multiple Airlines
Wed, Sep 2 - Sun, Sep 20
Multiple Airlines Logo
12:10 am - 6:55 pm
ONT
-
SAI
28h 45m
2 stops
Multiple Airlines Logo
6:50 pm - 6:05 pm
SAI
-
ONT
37h 15m
2 stops
$1,333Multiple Airlines
Sat, Sep 26 - Sun, Oct 25
Multiple Airlines Logo
9:45 pm - 7:05 pm
ONT
-
SAI
30h 20m
2 stops
Multiple Airlines Logo
6:50 pm - 3:55 pm
SAI
-
ONT
60h 05m
2 stops
$1,337Multiple Airlines
Fri, Jan 1 - Wed, Jan 27
Multiple Airlines Logo
12:10 am - 6:55 pm
ONT
-
SAI
28h 45m
2 stops
Multiple Airlines Logo
7:35 pm - 6:00 pm
SAI
-
ONT
36h 25m
2 stops
$1,346Multiple Airlines
Sat, Oct 10 - Mon, Oct 19
Multiple Airlines Logo
12:10 am - 9:00 am
ONT
-
SAI
42h 50m
2 stops
Multiple Airlines Logo
9:40 am - 6:00 pm
SAI
-
ONT
22h 20m
2 stops
$1,347Multiple Airlines
Sat, Oct 10 - Sun, Oct 18
Multiple Airlines Logo
12:10 am - 6:55 pm
ONT
-
SAI
28h 45m
2 stops
Multiple Airlines Logo
9:40 am - 6:00 pm
SAI
-
ONT
22h 20m
2 stops
$1,350Multiple Airlines
Mon, Oct 12 - Sun, Oct 18
Multiple Airlines Logo
9:45 pm - 5:40 pm
ONT
-
SAI
28h 55m
2 stops
Multiple Airlines Logo
5:55 pm - 3:55 pm
SAI
-
ONT
61h 00m
3 stops
$1,394Multiple Airlines
Fri, Jan 1 - Wed, Jan 27
Multiple Airlines Logo
10:50 pm - 6:45 pm
ONT
-
SAI
28h 55m
2 stops
Multiple Airlines Logo
7:25 pm - 5:05 pm
SAI
-
ONT
36h 40m
2 stops
$1,403Multiple Airlines
Tue, Jan 5 - Tue, Jan 26

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Customize your flight search to find flights from Ontario to Region of 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 832,500 searches. Data last updated July 23, 2026.
Use the filters below to find and compare flights from Ontario to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Wed 8/26

12:45 am-6:55 pm

2 stops28h 10m

Siem Reap–Angkor Intl

Sat 9/12

9:40 am-6:40 pm

2 stops23h 00m

$1,305

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Fri 9/4

12:45 am-9:00 am

2 stops42h 15m

Siem Reap–Angkor Intl

Sun 9/13

12:55 pm-6:40 pm

2 stops43h 45m

$1,324

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Wed 9/2

12:45 am-6:55 pm

2 stops28h 10m

Siem Reap–Angkor Intl

Sun 9/20

12:55 pm-6:00 pm

2 stops43h 05m

$1,332

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sat 9/26

12:10 am-6:55 pm

2 stops28h 45m

Siem Reap–Angkor Intl

Sun 10/25

6:50 pm-6:05 pm

2 stops37h 15m

$1,333

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Fri 1/1

9:45 pm-7:05 pm

2 stops30h 20m

Siem Reap–Angkor Intl

Wed 1/27

6:50 pm-3:55 pm

2 stops60h 05m

$1,337

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sat 10/10

12:10 am-6:55 pm

2 stops28h 45m

Siem Reap–Angkor Intl

Mon 10/19

7:35 pm-6:00 pm

2 stops36h 25m

$1,346

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sat 10/10

12:10 am-9:00 am

2 stops42h 50m

Siem Reap–Angkor Intl

Sun 10/18

9:40 am-6:00 pm

2 stops22h 20m

$1,347
Quickest round-trip

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Mon 10/12

12:10 am-6:55 pm

2 stops28h 45m

Siem Reap–Angkor Intl

Sun 10/18

9:40 am-6:00 pm

2 stops22h 20m

$1,350

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Fri 1/1

9:45 pm-5:40 pm

2 stops28h 55m

Siem Reap–Angkor Intl

Wed 1/27

5:55 pm-3:55 pm

3 stops61h 00m

$1,394

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Tue 1/5

10:50 pm-6:45 pm

2 stops28h 55m

Siem Reap–Angkor Intl

Tue 1/26

7:25 pm-5:05 pm

2 stops36h 40m

$1,403

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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Cheap Ontario to Region of Siem Reap flight deals and tips

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

Fastest flight time

23h 25m

Direct flights

None
The fastest flight from Ontario to Region of Siem Reap takes 23h 25m
There are no direct flights from Ontario to Region of Siem Reap. There are no popular flight routes from Ontario to Region of Siem Reap.
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Frequently asked questions about flying from Ontario to Siem Reap

  • When did momondo last update prices for flights from Ontario Airport to Siem Reap?

    Prices for flights from Ontario Airport to Siem Reap are refreshed on a daily basis.

  • How old do you have to be to fly from Ontario Airport to Siem Reap?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Siem Reap.

  • What documentation or ID do you need to fly to Siem Reap?

    The necessary travel and health documents for your Siem Reap 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 license 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.

Frequently asked questions about flying from Ontario to Siem Reap

  • How do I get Price Alerts for flights from Ontario to Region of Siem Reap?

    Confirm your travel details to search for the latest offers for flights from Ontario to Region of Siem Reap. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Ontario to Region of Siem Reap with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Why use momondo?

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

Finding the right flight to Siem Reap from Ontario 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 Ontario to Siem Reap with flexible booking policies on momondo?

All flight searches from Ontario to Siem Reap on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Ontario 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 Ontario 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 Ontario and alert you when they change.

An easier way to manage your Region of Siem Reap trip

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