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Cheap flights from Ontario to Siem Reap from C$ 832

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SAI
4 Apr — 11 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Siem Reap

Enter your travel dates to find the best prices.

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 5 March 2026.

Thu 10/96:30 p.m.
YYZ
-
SAI
2 stops52h 10m
United Airlines
Wed 23/910:30 a.m.
SAI
-
YYZ
2 stops44h 10m
United Airlines
Deal found 1/3C$ 1,404
Sat 31/109:00 a.m.
YUL
-
SAI
2 stops37h 15m
Multiple Airlines
Sun 29/117:25 p.m.
SAI
-
YUL
2 stops36h 11m
Multiple Airlines
Deal found 4/3C$ 1,432
Sat 7/119:00 a.m.
YUL
-
SAI
2 stops36h 15m
Multiple Airlines
Sun 29/117:25 p.m.
SAI
-
YUL
2 stops36h 11m
Multiple Airlines
Deal found 3/3C$ 1,434
Sun 8/116:20 p.m.
YUL
-
SAI
2 stops30h 20m
Multiple Airlines
Mon 30/117:25 p.m.
SAI
-
YUL
2 stops36h 11m
Multiple Airlines
Deal found 3/3C$ 1,484
Sat 7/111:25 p.m.
YUL
-
SAI
2 stops31h 50m
Multiple Airlines
Mon 30/117:25 p.m.
SAI
-
YUL
2 stops36h 11m
Multiple Airlines
Deal found 1/3C$ 1,487
Fri 25/99:30 p.m.
YUL
-
SAI
2 stops48h 30m
Multiple Airlines
Sat 17/1012:55 p.m.
SAI
-
YUL
2 stops40h 55m
Multiple Airlines
Deal found 4/3C$ 1,520
Thu 1/1012:55 p.m.
YUL
-
SAI
2 stops33h 05m
Multiple Airlines
Sat 24/107:30 p.m.
SAI
-
YUL
2 stops36h 36m
Multiple Airlines
Deal found 4/3C$ 1,655
Thu 10/94:15 p.m.
YYZ
-
SAI
3 stops42h 15m
Emirates
Wed 23/912:55 p.m.
SAI
-
YYZ
2 stops31h 35m
Emirates
Deal found 1/3C$ 2,087
Thu 10/911:55 p.m.
YYZ
-
SAI
3 stops31h 50m
Multiple Airlines
Wed 23/96:05 p.m.
SAI
-
YYZ
3 stops38h 55m
Multiple Airlines
Deal found 1/3C$ 2,582
Fri 3/48:25 p.m.
YOW
-
SAI
3 stops29h 50m
Multiple Airlines
Fri 10/47:05 p.m.
SAI
-
YOW
3 stops40h 34m
Multiple Airlines
Deal found 4/3C$ 3,019
Fri 3/45:25 p.m.
YOW
-
SAI
2 stops38h 20m
KLM
Fri 10/47:30 p.m.
SAI
-
YOW
2 stops54h 30m
KLM
Deal found 4/3C$ 5,978

Find flight deals from Ontario to Siem Reap

Keep the following information in mind while searching for Ontario to Siem Reap flight deals. Data was last updated 5 March 2026.

Round-trip from

C$ 1,708

One-way from

C$ 832
18/3-7/5
  • 18/3-7/5
  • 4 total stops
  • 70h 43m total
  • Ontario to Siem Reap
Search Deals
10/3
  • 10/3
  • 3 total stops
  • 51h 25m total
  • Ontario to Siem Reap
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 629,999 searches. Data last updated 5 March 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

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Tue 17/3

11:40 a.m.-9:10 p.m.

2 stops46h 30m

Siem Reap–Angkor Intl

Sat 9/5

11:50 p.m.-8:00 a.m.

2 stops43h 10m

C$ 1,857

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Sun 31/5

1:05 p.m.-9:00 a.m.

2 stops32h 55m

Siem Reap–Angkor Intl

Sat 6/6

7:30 p.m.-5:00 p.m.

2 stops32h 30m

C$ 1,868

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Wed 1/4

9:35 p.m.-6:45 p.m.

2 stops34h 10m

Siem Reap–Angkor Intl

Tue 21/4

7:30 p.m.-2:45 p.m.

2 stops30h 15m

C$ 2,010

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Mon 16/3

9:50 p.m.-9:15 a.m.

2 stops24h 25m

Siem Reap–Angkor Intl

Fri 8/5

7:30 p.m.-2:45 p.m.

2 stops54h 15m

C$ 2,099

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Sun 15/3

9:50 p.m.-9:15 a.m.

2 stops24h 25m

Siem Reap–Angkor Intl

Wed 6/5

7:30 p.m.-2:45 p.m.

2 stops54h 15m

C$ 2,102

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Fri 20/3

9:50 p.m.-9:15 a.m.

2 stops24h 25m

Siem Reap–Angkor Intl

Mon 4/5

7:30 p.m.-2:45 p.m.

2 stops30h 15m

C$ 2,121

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Thu 19/3

11:40 a.m.-9:10 p.m.

2 stops46h 30m

Siem Reap–Angkor Intl

Mon 4/5

12:55 p.m.-8:00 a.m.

2 stops30h 05m

C$ 2,151

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Wed 1/4

10:30 p.m.-9:30 p.m.

3 stops60h 00m

Siem Reap–Angkor Intl

Tue 21/4

11:50 p.m.-10:36 a.m.

3 stops45h 46m

C$ 2,191

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Fri 3/4

9:35 p.m.-6:45 p.m.

2 stops34h 10m

Siem Reap–Angkor Intl

Fri 10/4

7:05 p.m.-2:45 p.m.

2 stops54h 40m

C$ 2,362

OttawaSiem Reap

YOW - SAI

YOWSAI

Ottawa

Fri 3/4

8:25 p.m.-1:15 p.m.

3 stops29h 50m

Siem Reap–Angkor Intl

Fri 10/4

7:05 p.m.-12:39 a.m.

3 stops40h 34m

C$ 3,019

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/2

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Siem Reap
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Siem Reap

Get insights into the airlines that provide service to Siem Reap. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Siem Reap. Reviews last updated 5 March 2026.
Check out reviews from past customers who have flown with United Airlines from Ontario to Siem Reap to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,389 reviews
Check prices

Overall

7.4

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,389 reviews
United Airlines
7.4
Good
9,389 reviews
Check prices

Overall

7.4

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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.

  • How long is the flight from Region of Ontario to Region of Siem Reap?

    There are many flights that can get you from Region of Ontario to Region of Siem Reap in 34h 10m. Fly via Emirates or Qatar Airways to get the fastest option. The distance between Region of Ontario and Region of Siem Reap is about 13461 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Ontario to Siem Reap

Discover the top airline that operate flights from Ontario to Siem Reap. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 5 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 1,284AverageC$ 1,363FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ontario to Siem Reap?

When you search for this flight from Ontario to Siem Reap, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Siem Reap?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Siem Reap.

Can Cheapflights find flights from Ontario to Siem Reap with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario to Siem Reap with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Siem Reap become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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