$625+ Cheap flights from Ontario (ONT) to Siem Reap, Cambodia (SAI)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SAI
Nov 12 — Nov 191
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
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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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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 October 13, 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 October 13, 2026.
This FlightHub deal was found by Cheapflights users on 10/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2710:50 pm -
2 stops22h 50m
Fri 12/49:55 am -
2 stops22h 10m
Deal found 10/10![Multiple Airlines logo]()
$1,406
This Mytrip deal was found by Cheapflights users on 10/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:01 pm -
3 stops34h 59m
Wed 4/79:40 am -
2 stops21h 25m
Deal found 10/13![Multiple Airlines logo]()
$1,489
This FlightHub deal was found by Cheapflights users on 10/12. 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 11/1010:50 pm -
2 stops22h 50m
Tue 11/179:55 am -
2 stops22h 10m
Deal found 10/12![Multiple Airlines logo]()
$1,506
This FlightHub deal was found by Cheapflights users on 10/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2110:50 pm -
2 stops22h 50m
Sat 1/239:55 am -
2 stops22h 10m
Deal found 10/10![Multiple Airlines logo]()
$2,324
This FlightHub deal was found by Cheapflights users on 10/8. 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 12/2110:50 pm -
2 stops43h 25m
Mon 12/287:25 pm -
2 stops36h 40m
Deal found 10/8![Multiple Airlines logo]()
$2,359
This Justfly.com deal was found by Cheapflights users on 10/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2610:50 pm -
2 stops22h 50m
Sun 1/39:55 am -
2 stops22h 10m
Deal found 10/11![Multiple Airlines logo]()
$3,025
This Justfly.com deal was found by Cheapflights users on 10/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2210:50 pm -
2 stops28h 55m
Fri 1/19:55 am -
2 stops22h 10m
Deal found 10/10![Multiple Airlines logo]()
$3,487
This Justfly.com deal was found by Cheapflights users on 10/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2110:50 pm -
2 stops22h 50m
Fri 1/19:55 am -
2 stops22h 10m
Deal found 10/10![Multiple Airlines logo]()
$3,491
This Justfly.com deal was found by Cheapflights users on 10/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2210:50 pm -
2 stops28h 55m
Sat 1/29:55 am -
2 stops22h 10m
Deal found 10/10![Multiple Airlines logo]()
$3,517
This Justfly.com deal was found by Cheapflights users on 10/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2110:50 pm -
2 stops22h 50m
Sat 1/29:55 am -
2 stops22h 10m
Deal found 10/10![Multiple Airlines logo]()
$3,519
This Justfly.com deal was found by Cheapflights users on 10/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2010:50 pm -
2 stops28h 55m
Fri 1/19:55 am -
2 stops22h 10m
Deal found 10/10![Multiple Airlines logo]()
$3,870
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 October 13, 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 October 13, 2026.
This FlightHub deal was found by Cheapflights users on 10/12. 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 2/110:50 pm -
2 stops22h 50m
Thu 2/259:55 am -
2 stops22h 10m
Deal found 10/12![Multiple Airlines logo]()
$1,374
This FlightHub deal was found by Cheapflights users on 10/12. 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 3/2511:50 pm -
2 stops22h 50m
Thu 4/19:40 am -
2 stops22h 20m
Deal found 10/12![Multiple Airlines logo]()
$1,454
This FlightHub deal was found by Cheapflights users on 10/12. 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 2/2110:50 pm -
2 stops22h 50m
Mon 3/19:55 am -
2 stops22h 10m
Deal found 10/12![Multiple Airlines logo]()
$1,454
This China Airlines deal was found by Cheapflights users on 10/12. 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 2/2010:50 pm -
2 stops22h 50m
Sun 2/287:25 pm -
2 stops36h 40m
Deal found 10/12![Multiple Airlines logo]()
$1,459
This Mytrip deal was found by Cheapflights users on 10/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:01 pm -
3 stops34h 59m
Wed 4/79:40 am -
2 stops21h 25m
Deal found 10/13![Multiple Airlines logo]()
$1,489
This FlightHub deal was found by Cheapflights users on 10/12. 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 11/1010:50 pm -
2 stops22h 50m
Tue 11/179:55 am -
2 stops22h 10m
Deal found 10/12![Multiple Airlines logo]()
$1,506
This FlightHub deal was found by Cheapflights users on 10/12. 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.
Fri 2/1910:50 pm -
2 stops22h 50m
Sat 2/279:55 am -
2 stops22h 10m
Deal found 10/12![Multiple Airlines logo]()
$1,553
This FlightHub deal was found by Cheapflights users on 10/12. 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 2/2110:50 pm -
2 stops22h 50m
Sun 2/289:55 am -
2 stops22h 10m
Deal found 10/12![Multiple Airlines logo]()
$1,553
This FlightHub deal was found by Cheapflights users on 10/11. 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.
Fri 1/810:50 pm -
2 stops22h 50m
Tue 4/69:40 am -
2 stops22h 20m
Deal found 10/11![Multiple Airlines logo]()
$1,583
This Trip.com deal was found by Cheapflights users on 10/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1911:50 pm -
2 stops22h 50m
Sun 4/119:45 pm -
2 stops34h 15m
Deal found 10/11![Multiple Airlines logo]()
$1,621
This FlightHub deal was found by Cheapflights users on 10/11. 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.
Fri 1/810:50 pm -
2 stops22h 50m
Thu 4/89:40 am -
2 stops22h 20m
Deal found 10/11![Multiple Airlines logo]()
$1,659
Last-minute flights from Ontario to Siem ReapDiscover last-minute flight deals from Ontario to Siem Reap. Data last updated October 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Siem Reap. Data last updated October 13, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 10/12. 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 11/1010:50 pm -
2 stops22h 50m
Tue 11/179:55 am -
2 stops22h 10m
Deal found 10/12![Multiple Airlines logo]()
$1,506
This Mytrip deal was found by Cheapflights users on 10/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:01 pm -
3 stops34h 59m
Wed 4/79:40 am -
2 stops21h 25m
Deal found 10/13![Multiple Airlines logo]()
$1,489
This FlightHub deal was found by Cheapflights users on 10/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2710:50 pm -
2 stops22h 50m
Fri 12/49:55 am -
2 stops22h 10m
Deal found 10/10![Multiple Airlines logo]()
$1,406
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 October 13, 2026.
Search for one-way flight options from Ontario to Siem Reap. Find affordable one-way fares based on user searches. Data last updated October 13, 2026.
This FlightHub deal was found by Cheapflights users on 10/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/2010:45 pm -
2 stops30h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Multiple Airlines logo]()
$625
This SmartFares deal was found by Cheapflights users on 10/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:45 pm -
2 stops29h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Multiple Airlines logo]()
$686
This China Airlines deal was found by Cheapflights users on 10/11. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/710:50 pm -
2 stops22h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Multiple Airlines logo]()
$786
This SmartFares deal was found by Cheapflights users on 10/8. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:50 pm -
2 stops28h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$906
This FlightHub deal was found by Cheapflights users on 10/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1911:50 pm -
2 stops24h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Multiple Airlines logo]()
$946
This SmartFares deal was found by Cheapflights users on 10/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2910:50 pm -
2 stops28h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$948
This SmartFares deal was found by Cheapflights users on 10/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/129:45 pm -
2 stops30h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Multiple Airlines logo]()
$1,121
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:40 pm -
2 stops54h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![United Airlines logo]()
$1,388
This FlightHub deal was found by Cheapflights users on 10/12. 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 12/1310:50 pm -
2 stops22h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Multiple Airlines logo]()
$1,398
This SmartFares deal was found by Cheapflights users on 10/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2010:50 pm -
2 stops22h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$1,400
This Qatar Airways deal was found by Cheapflights users on 10/10. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/196:00 am -
3 stops37h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Qatar Airways logo]()
$1,408
This FlightHub deal was found by Cheapflights users on 10/12. 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.
Fri 12/1110:50 pm -
2 stops28h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Multiple Airlines logo]()
$1,479
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 October 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,216 (Justfly.com) |
One-way from | $625 (FlightHub) |
Popular in | December |
Cheapest in | August |
Average price | $1,203 |
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 October 13, 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
Sat 3/20
10:45 pm-6:45 pm
2 stops30h 00m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$625
Quickest round-trip
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Thu 1/7
10:50 pm-12:40 pm
2 stops22h 50m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$786
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Wed 12/30
10:50 pm-6:45 pm
2 stops28h 55m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$906
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Fri 3/19
11:50 pm-2:00 pm
2 stops24h 10m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$946
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Tue 12/29
10:50 pm-6:45 pm
2 stops28h 55m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$948
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Mon 2/1
10:50 pm-12:40 pm
2 stops22h 50m
Siem Reap–Angkor Intl
Thu 2/25
9:55 am-5:05 pm
2 stops22h 10m
$1,374
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Wed 12/9
6:40 pm-4:00 pm
2 stops54h 20m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,388
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Fri 11/20
10:50 pm-12:40 pm
2 stops22h 50m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,400
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Fri 3/19
6:00 am-9:15 am
3 stops37h 15m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$1,408
OntarioSiem Reap
ONT Ontario - SAI Siem Reap–Angkor Intl
ONTSAI
Ontario
Thu 3/25
11:50 pm-12:40 pm
2 stops22h 50m
Siem Reap–Angkor Intl
Thu 4/1
9:40 am-6:00 pm
2 stops22h 20m
$1,454
Showing 1-10 of 23 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 October.
| 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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