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Cheap flights from Ontario to Siem Reap from C$ 1,051

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 30/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SAI
29 Aug — 5 Sep1
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 30 July 2026.

Tue 29/99:35 p.m.
YUL
-
SAI
2 stops31h 35m
Multiple Airlines
Mon 30/114:50 p.m.
SAI
-
YUL
2 stops33h 15m
Multiple Airlines
Deal found 28/7C$ 1,793
Tue 29/98:05 p.m.
YUL
-
SAI
2 stops33h 05m
Multiple Airlines
Sat 14/1111:45 a.m.
SAI
-
YUL
2 stops42h 15m
Multiple Airlines
Deal found 26/7C$ 1,801
Tue 13/1010:25 p.m.
YYZ
-
SAI
2 stops47h 35m
Multiple Airlines
Sun 1/117:25 p.m.
SAI
-
YYZ
2 stops32h 32m
Multiple Airlines
Deal found 29/7C$ 1,840
Mon 28/124:35 p.m.
YUL
-
SAI
2 stops28h 40m
Multiple Airlines
Sun 10/17:25 p.m.
SAI
-
YUL
2 stops37h 08m
Multiple Airlines
Deal found 28/7C$ 1,887
Tue 29/99:35 p.m.
YUL
-
SAI
2 stops31h 35m
Multiple Airlines
Sat 28/114:50 p.m.
SAI
-
YUL
2 stops57h 15m
Multiple Airlines
Deal found 28/7C$ 1,902
Tue 13/102:55 p.m.
YYZ
-
SAI
2 stops43h 35m
Emirates
Sun 1/111:20 p.m.
SAI
-
YYZ
2 stops55h 30m
Emirates
Deal found 27/7C$ 1,952
Sat 31/107:30 a.m.
YUL
-
SAI
2 stops42h 10m
Multiple Airlines
Sat 12/127:25 p.m.
SAI
-
YUL
2 stops37h 08m
Multiple Airlines
Deal found 26/7C$ 1,959
Sat 26/1210:25 p.m.
YYZ
-
SAI
2 stops46h 50m
Multiple Airlines
Sat 9/17:25 p.m.
SAI
-
YYZ
2 stops34h 30m
Multiple Airlines
Deal found 29/7C$ 1,976
Wed 30/95:00 p.m.
YUL
-
SAI
2 stops29h 00m
Multiple Airlines
Wed 25/111:20 p.m.
SAI
-
YUL
2 stops39h 40m
Multiple Airlines
Deal found 29/7C$ 1,994
Wed 30/95:00 p.m.
YUL
-
SAI
2 stops32h 15m
Multiple Airlines
Sat 21/117:25 p.m.
SAI
-
YUL
2 stops37h 08m
Multiple Airlines
Deal found 28/7C$ 2,001
Wed 30/95:00 p.m.
YUL
-
SAI
2 stops29h 00m
Multiple Airlines
Sat 28/117:25 p.m.
SAI
-
YUL
2 stops37h 08m
Multiple Airlines
Deal found 29/7C$ 2,011
Thu 12/118:50 p.m.
YUL
-
SAI
2 stops33h 55m
Multiple Airlines
Thu 3/127:25 p.m.
SAI
-
YUL
2 stops30h 40m
Multiple Airlines
Deal found 28/7C$ 2,012

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 30 July 2026.

Round-trip from

C$ 1,793

One-way from

C$ 1,051
29/9-30/11
  • 29/9-30/11
  • 4 total stops
  • 64h 50m total
  • Ontario to Siem Reap
Search Deals
China Eastern
  • China Eastern
  • 30/12
  • 2 total stops
  • 65h 35m 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 30 July 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

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Tue 29/9

8:05 p.m.-4:10 p.m.

2 stops33h 05m

Siem Reap–Angkor Intl

Sat 14/11

11:45 a.m.-6:00 p.m.

2 stops42h 15m

C$ 1,801

TorontoSiem Reap

YYZ - SAI

YYZSAI

Toronto Pearson Intl

Tue 13/10

2:55 p.m.-9:30 p.m.

2 stops43h 35m

Siem Reap–Angkor Intl

Sun 1/11

1:20 p.m.-8:50 a.m.

2 stops55h 30m

C$ 1,952

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

5:00 p.m.-12:15 p.m.

2 stops32h 15m

Siem Reap–Angkor Intl

Sat 21/11

7:25 p.m.-8:33 p.m.

2 stops37h 08m

C$ 2,001

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Thu 12/11

8:50 p.m.-6:45 p.m.

2 stops33h 55m

Siem Reap–Angkor Intl

Thu 3/12

7:25 p.m.-2:05 p.m.

2 stops30h 40m

C$ 2,012

TorontoSiem Reap

YYZ - SAI

YYZSAI

Toronto Pearson Intl

Sat 5/9

2:55 p.m.-12:15 p.m.

2 stops34h 20m

Siem Reap–Angkor Intl

Sat 19/9

11:50 p.m.-9:30 a.m.

2 stops44h 40m

C$ 2,055
Quickest round-trip

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Fri 25/9

9:35 p.m.-9:00 a.m.

2 stops24h 25m

Siem Reap–Angkor Intl

Sat 17/10

7:35 p.m.-2:45 p.m.

2 stops30h 10m

C$ 2,087

TorontoSiem Reap

YYZ - SAI

YYZSAI

Toronto Pearson Intl

Fri 15/1

1:55 p.m.-12:40 p.m.

2 stops58h 45m

Siem Reap–Angkor Intl

Mon 15/2

1:20 p.m.-8:50 a.m.

2 stops55h 30m

C$ 2,149

MontrealSiem Reap

YUL - SAI

YULSAI

Montreal Pierre Elliott Trudeau Intl

Thu 1/10

11:10 a.m.-9:30 p.m.

3 stops47h 20m

Siem Reap–Angkor Intl

Sat 24/10

11:50 p.m.-9:25 a.m.

3 stops68h 35m

C$ 2,164

TorontoSiem Reap

YYZ - SAI

YYZSAI

Toronto Pearson Intl

Mon 17/8

7:00 p.m.-12:15 p.m.

2 stops30h 15m

Siem Reap–Angkor Intl

Mon 31/8

7:35 p.m.-4:30 p.m.

2 stops31h 55m

C$ 2,204

TorontoSiem Reap

YYZ - SAI

YYZSAI

Toronto Pearson Intl

Fri 20/11

3:25 p.m.-8:45 a.m.

2 stops29h 20m

Siem Reap–Angkor Intl

Sat 28/11

10:00 p.m.-1:25 p.m.

3 stops51h 25m

C$ 2,269

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

Showing 1-10 of 25 resultsSorted by cheapest first
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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.

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 43h 35m. Fly via Emirates to get the fastest option. The distance between Region of Ontario and Region of Siem Reap is about 13649 km.

  • 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

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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.

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

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