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Siem Reap

$667+ Cheap flights from Ontario (ONT) to Siem Reap, Cambodia (SAI)

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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SAI
Aug 13 — Aug 201
Thu 8/13
Thu 8/20
1 adult, Economy
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Cheap flight deals from Ontario to Siem Reap

Cheapest flights from Ontario to Siem Reap
Explore the most affordable flight options available from Ontario to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2026.

This CheapOair deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:30 pm
ONT
-
SAI
2 stops29h 25m
Multiple Airlines
Wed 10/149:40 am
SAI
-
ONT
2 stops21h 25m
Multiple Airlines
Deal found 7/10$1,223
This FlightHub deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:10 am
ONT
-
SAI
2 stops28h 45m
Multiple Airlines
Sat 10/2412:55 pm
SAI
-
ONT
2 stops43h 10m
Multiple Airlines
Deal found 7/11$1,346
This FlightHub deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:45 am
ONT
-
SAI
2 stops28h 10m
Multiple Airlines
Fri 9/257:35 pm
SAI
-
ONT
2 stops36h 25m
Multiple Airlines
Deal found 7/9$1,347
This Justfly.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:45 am
ONT
-
SAI
2 stops28h 10m
Multiple Airlines
Sat 8/297:35 pm
SAI
-
ONT
2 stops37h 05m
Multiple Airlines
Deal found 7/9$1,381
This China Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:10 am
ONT
-
SAI
2 stops28h 45m
Multiple Airlines
Mon 10/129:40 am
SAI
-
ONT
2 stops22h 20m
Multiple Airlines
Deal found 7/13$2,806
This China Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:50 pm
ONT
-
SAI
2 stops22h 50m
Multiple Airlines
Wed 11/119:55 am
SAI
-
ONT
2 stops22h 10m
Multiple Airlines
Deal found 7/10$7,399

Find flight deals from Ontario to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) 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 July 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,223
(CheapOair)

One-way from

$667
(FlightHub)

Popular in

December

Cheapest in

August

Average price

$1,428
Provider with most accurate pricing for Ontario-Siem Reap–Angkor Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Siem Reap–Angkor Intl flights.
Search Deals
From Ontario to Siem Reap–Angkor Intl
Search Deals
One-way flight from Ontario to Siem Reap–Angkor Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($245 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($82 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario 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 2,558,603 searches. Data last updated July 14, 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

Tue 11/24

10:50 pm-6:45 pm

2 stops28h 55m

Siem Reap–Angkor Intl

Sun 12/6

1:20 pm-5:05 pm

2 stops42h 45m

$1,346

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Mon 10/5

12:10 am-6:55 pm

2 stops28h 45m

Siem Reap–Angkor Intl

Sat 10/24

12:55 pm-6:05 pm

2 stops43h 10m

$1,346

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Wed 8/26

12:45 am-6:55 pm

2 stops28h 10m

Siem Reap–Angkor Intl

Sat 8/29

7:35 pm-6:40 pm

2 stops37h 05m

$1,381

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Fri 1/1

10:50 pm-2:25 pm

2 stops24h 35m

Siem Reap–Angkor Intl

Wed 1/27

7:25 pm-5:05 pm

2 stops36h 40m

$1,703

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Fri 1/1

10:50 pm-9:15 am

2 stops43h 25m

Siem Reap–Angkor Intl

Thu 1/28

7:25 pm-5:05 pm

2 stops36h 40m

$1,707

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Sat 10/3

12:10 am-6:55 pm

2 stops28h 45m

Siem Reap–Angkor Intl

Mon 10/12

9:40 am-6:00 pm

2 stops22h 20m

$2,806
Quickest round-trip

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Thu 11/5

10:50 pm-12:40 pm

2 stops22h 50m

Siem Reap–Angkor Intl

Wed 11/11

9:55 am-5:05 pm

2 stops22h 10m

$7,399
Cheapest one-way
Quickest one-way

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Thu 11/12

10:50 pm-12:40 pm

2 stops22h 50m

$667

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Wed 8/26

12:45 am-6:55 pm

2 stops28h 10m

$667

OntarioSiem Reap

ONT - SAI

ONTSAI

Ontario

Wed 12/23

10:50 pm-2:25 pm

2 stops24h 35m

$1,140

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

Compare providers for flights from Ontario to Siem Reap

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Siem Reap in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Siem Reap flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Siem Reap flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Siem Reap flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Siem Reap flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Siem Reap flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Ontario with our price prediction graph.
Estimated round-trip 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 Ontario to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario 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.

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