$1,087+ 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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SAI
Oct 1 — Oct 81
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Siem Reap with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Siem Reap
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Best
Last-minute
One-way
Cheapest flights from Ontario to Siem ReapExplore 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 September 1, 2026.
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 September 1, 2026.
This Trip.com deal was found by Cheapflights users on 8/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/310:50 pm -
2 stops29h 00m
Sun 11/297:30 pm -
2 stops60h 35m
Deal found 8/30![Multiple Airlines logo]()
$1,128
This Gotogate deal was found by Cheapflights users on 8/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:45 am -
2 stops28h 10m
Sun 9/139:40 am -
2 stops23h 00m
Deal found 8/27![Multiple Airlines logo]()
$1,206
This Trip.com deal was found by Cheapflights users on 8/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:50 pm -
2 stops24h 35m
Sun 11/297:30 pm -
2 stops60h 35m
Deal found 8/29![Multiple Airlines logo]()
$1,283
This oojo deal was found by Cheapflights users on 8/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:10 am -
2 stops23h 05m
Sat 10/2410:35 pm -
2 stops33h 30m
Deal found 8/31![Multiple Airlines logo]()
$1,299
This China Airlines deal was found by Cheapflights users on 8/29. 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.
Sun 11/110:50 pm -
2 stops24h 35m
Thu 11/269:55 am -
2 stops22h 10m
Deal found 8/29![Multiple Airlines logo]()
$1,310
This FlightHub deal was found by Cheapflights users on 8/29. 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 11/210:50 pm -
2 stops22h 50m
Sat 11/289:55 am -
2 stops22h 10m
Deal found 8/29![Multiple Airlines logo]()
$1,424
This FlightHub deal was found by Cheapflights users on 8/28. 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.
Wed 12/3010:50 pm -
2 stops22h 50m
Thu 1/289:55 am -
2 stops22h 10m
Deal found 8/28![Multiple Airlines logo]()
$1,458
Best flights from Ontario to Siem ReapDiscover carefully curated flight deals from Ontario to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.
Discover carefully curated flight deals from Ontario to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.
This Trip.com deal was found by Cheapflights users on 8/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/310:50 pm -
2 stops29h 00m
Sun 11/297:30 pm -
2 stops60h 35m
Deal found 8/30![Multiple Airlines logo]()
$1,128
This oojo deal was found by Cheapflights users on 8/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:10 am -
2 stops23h 05m
Sat 10/2410:35 pm -
2 stops33h 30m
Deal found 8/31![Multiple Airlines logo]()
$1,299
This China Airlines deal was found by Cheapflights users on 8/29. 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.
Sun 11/110:50 pm -
2 stops24h 35m
Thu 11/269:55 am -
2 stops22h 10m
Deal found 8/29![Multiple Airlines logo]()
$1,310
This Justfly.com deal was found by Cheapflights users on 8/30. 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.
Mon 11/210:50 pm -
2 stops22h 50m
Sun 11/299:55 am -
2 stops22h 10m
Deal found 8/30![Multiple Airlines logo]()
$1,667
This Justfly.com deal was found by Cheapflights users on 8/29. 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 11/410:50 pm -
2 stops22h 50m
Sun 11/299:55 am -
2 stops22h 10m
Deal found 8/29![Multiple Airlines logo]()
$1,673
This FlightHub deal was found by Cheapflights users on 8/28. 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.
Tue 12/2910:50 pm -
2 stops22h 50m
Mon 1/49:55 am -
2 stops22h 10m
Deal found 8/28![Multiple Airlines logo]()
$3,883
This FlightHub deal was found by Cheapflights users on 8/28. 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.
Tue 12/2910:50 pm -
2 stops22h 50m
Sun 1/39:55 am -
2 stops22h 10m
Deal found 8/28![Multiple Airlines logo]()
$3,883
This FlightHub deal was found by Cheapflights users on 8/28. 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.
Sun 12/2710:50 pm -
2 stops22h 50m
Mon 1/49:55 am -
2 stops22h 10m
Deal found 8/28![Multiple Airlines logo]()
$3,963
Last-minute flights from Ontario to Siem ReapDiscover last-minute flight deals from Ontario to Siem Reap. Data last updated September 1, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Siem Reap. Data last updated September 1, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 8/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:45 am -
2 stops28h 10m
Sun 9/139:40 am -
2 stops23h 00m
Deal found 8/27![Multiple Airlines logo]()
$1,206
One-way flights from Ontario to Siem ReapSearch for one-way flight options from Ontario to Siem Reap. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.
Search for one-way flight options from Ontario to Siem Reap. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.
This FlightHub deal was found by Cheapflights users on 8/31. 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 12/1410:50 pm -
2 stops22h 50m
Deal found 8/31![Multiple Airlines logo]()
$1,087
This oojo deal was found by Cheapflights users on 8/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/59:45 pm -
2 stops30h 00m
Deal found 8/28![Multiple Airlines logo]()
$3,844
This FlightHub deal was found by Cheapflights users on 8/29. 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.
Sat 11/2110:50 pm -
2 stops22h 50m
Deal found 8/29![Multiple Airlines logo]()
$5,137
This oojo deal was found by Cheapflights users on 8/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1410:50 pm -
2 stops28h 55m
Deal found 8/31![Multiple Airlines logo]()
$5,268
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 September 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,128 (Trip.com) |
One-way from | $1,087 (FlightHub) |
Popular in | December |
Cheapest in | August |
Average price | $989 |
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 7,457,451 searches. Data last updated September 1, 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
Cheapest round-trip
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Tue 11/3
10:50 pm-6:50 pm
2 stops29h 00m
Siem Reap–Angkor Intl
Sun 11/29
7:30 pm-5:05 pm
2 stops60h 35m
$1,128
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Mon 10/5
12:10 am-1:15 pm
2 stops23h 05m
Siem Reap–Angkor Intl
Sat 10/24
10:35 pm-6:05 pm
2 stops33h 30m
$1,299
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Sun 11/1
10:50 pm-2:25 pm
2 stops24h 35m
Siem Reap–Angkor Intl
Thu 11/26
9:55 am-5:05 pm
2 stops22h 10m
$1,310
Quickest round-trip
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Mon 11/2
10:50 pm-12:40 pm
2 stops22h 50m
Siem Reap–Angkor Intl
Sun 11/29
9:55 am-5:05 pm
2 stops22h 10m
$1,667
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Wed 11/4
10:50 pm-12:40 pm
2 stops22h 50m
Siem Reap–Angkor Intl
Sun 11/29
9:55 am-5:05 pm
2 stops22h 10m
$1,673
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Tue 12/29
10:50 pm-12:40 pm
2 stops22h 50m
Siem Reap–Angkor Intl
Mon 1/4
9:55 am-5:05 pm
2 stops22h 10m
$3,883
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Tue 12/29
10:50 pm-12:40 pm
2 stops22h 50m
Siem Reap–Angkor Intl
Sun 1/3
9:55 am-5:05 pm
2 stops22h 10m
$3,883
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Sun 12/27
10:50 pm-12:40 pm
2 stops22h 50m
Siem Reap–Angkor Intl
Mon 1/4
9:55 am-5:05 pm
2 stops22h 10m
$3,963
Cheapest one-way
Quickest one-way
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Mon 12/14
10:50 pm-12:40 pm
2 stops22h 50m
$1,087
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Tue 1/5
9:45 pm-6:45 pm
2 stops30h 00m
$3,844
Showing 1-10 of 12 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
ONT-SAI
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.
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