In terms of precipitation, rainfall in Region of Siem Reap ranges from 0.0 - 260.0 mm per month. September is typically the wettest month, when rainfall can reach 260.0 mm. January is typically the driest time to visit Region of Siem Reap when rainfall is around 0.0 mm.

If weather is an important factor for your trip to Region of Siem Reap, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 24.0 C).

What is the cheapest time of day to fly from YUL to SI?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Montreal Pierre Elliott Trudeau Intl Airport to Region of Siem Reap as you normally would.

How can I find direct flights from Pierre Elliott Trudeau Intl to Siem Reap?

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

Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Siem Reap?

Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl 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.

C$ 878+ Cheap Flights from Montreal Pierre Elliott Trudeau Intl Airport to Siem Reap

Cheap flight deals from Pierre Elliott Trudeau Intl to Siem Reap

Enter your travel dates to find the best prices.

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Cheapest flights from Pierre Elliott Trudeau Intl to Siem Reap
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2026.

Mon 30/116:15 p.m. -

2 stops27h 00m

Sun 28/27:25 p.m. -

2 stops33h 35m

Deal found 14/9C$ 1,870

Wed 7/1010:05 p.m. -

2 stops31h 05m

Sat 12/124:50 p.m. -

2 stops33h 15m

Deal found 12/9C$ 1,978

Thu 31/126:15 p.m. -

2 stops30h 25m

Mon 25/17:25 p.m. -

2 stops36h 10m

Deal found 10/9C$ 2,067

Sat 7/118:45 a.m. -

2 stops45h 45m

Mon 30/117:25 p.m. -

2 stops37h 05m

Deal found 12/9C$ 2,069

Thu 31/126:15 p.m. -

2 stops27h 00m

Wed 27/17:25 p.m. -

2 stops33h 35m

Deal found 10/9C$ 2,106

Sun 25/1010:05 p.m. -

2 stops33h 45m

Sun 1/1110:20 a.m. -

2 stops39h 45m

Deal found 10/9C$ 2,135

Thu 12/119:05 p.m. -

2 stops27h 35m

Thu 3/121:20 p.m. -

2 stops36h 45m

Deal found 12/9C$ 2,153

Thu 12/1110:40 a.m. -

2 stops35h 05m

Sat 5/1211:50 p.m. -

2 stops43h 45m

Deal found 15/9C$ 2,162

Find flight deals from Pierre Elliott Trudeau Intl to Siem Reap

Round-trip from	C$ 1,870
One-way from	C$ 878

30/11-28/2
4 total stops
60h 35m total
Montreal to Siem Reap

Search Deals

21/1-31/12
3 total stops
37h 45m total
Montreal to Siem Reap

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Siem Reap that are best for you.

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Route

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Price

Cheapest round-trip

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Mon 18/1

5:55 p.m.-8:30 p.m.

3 stops38h 35m

Siem Reap–Angkor Intl

Wed 31/12

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

Nonstop0h 00m

C$ 936

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Wed 13/1

12:40 p.m.-4:00 p.m.

2 stops39h 20m

Siem Reap–Angkor Intl

Wed 31/12

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

Nonstop0h 00m

C$ 1,193

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Wed 20/1

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

2 stops46h 00m

Siem Reap–Angkor Intl

Wed 31/12

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

Nonstop0h 00m

C$ 1,289

Quickest round-trip

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Tue 19/1

6:15 p.m.-12:40 p.m.

2 stops30h 25m

Siem Reap–Angkor Intl

Wed 31/12

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

Nonstop0h 00m

C$ 1,291

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Wed 20/1

6:00 p.m.-4:00 p.m.

2 stops58h 00m

Siem Reap–Angkor Intl

Wed 31/12

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

Nonstop0h 00m

C$ 1,332

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Sat 16/1

9:05 p.m.-6:45 p.m.

2 stops33h 40m

Siem Reap–Angkor Intl

Wed 31/12

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

Nonstop0h 00m

C$ 1,634

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Mon 30/11

6:15 p.m.-9:15 a.m.

2 stops27h 00m

Siem Reap–Angkor Intl

Sun 28/2

7:25 p.m.-5:00 p.m.

2 stops33h 35m

C$ 1,870

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Thu 12/11

9:05 p.m.-12:40 p.m.

2 stops27h 35m

Siem Reap–Angkor Intl

Thu 3/12

1:20 p.m.-2:05 p.m.

2 stops36h 45m

C$ 2,153

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Thu 12/11

10:40 a.m.-9:45 a.m.

2 stops35h 05m

Siem Reap–Angkor Intl

Sat 5/12

11:50 p.m.-7:35 a.m.

2 stops43h 45m

C$ 2,162

MontrealSiem Reap

YUL Montreal Pierre Elliott Trudeau Intl - SAI Siem Reap–Angkor Intl

YULSAI

Montreal Pierre Elliott Trudeau Intl

Fri 25/9

9:35 p.m.-6:55 p.m.

2 stops34h 20m

Siem Reap–Angkor Intl

Sat 17/10

9:40 a.m.-2:45 p.m.

2 stops40h 05m

C$ 2,188

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 15 resultsSorted by cheapest first

Best time to book a flight from Pierre Elliott Trudeau Intl to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Pierre Elliott Trudeau Intl with our price prediction graph.

YUL-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.

Cheapflights Insights

Everything you need to know about your flight from Montreal Pierre Elliott Trudeau Intl Airport to Siem Reap

YUL-KHSI

YUL-SAI

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Region of Siem Reap?
Airlines like Qatar Airways fly from Montreal Pierre Elliott Trudeau Intl Airport to Region of Siem Reap in about 27h 35m. The time it takes to get you to your destination can typically vary by up to . There are 13461 km between Montreal Pierre Elliott Trudeau Intl Airport and Region of Siem Reap.
Can I find deals for flights from Pierre Elliott Trudeau Intl to Siem Reap that include hotel bookings?
Yes. In addition to deals on Pierre Elliott Trudeau Intl to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Pierre Elliott Trudeau Intl to Siem Reap?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pierre Elliott Trudeau Intl to Siem Reap.
Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Siem Reap?
Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl 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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Can Cheapflights notify me if prices for flights from Pierre Elliott Trudeau Intl to Siem Reap become cheaper?

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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Siem Reap from C$ 878

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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Pierre Elliott Trudeau Intl to Siem Reap

Cheapest flights from Pierre Elliott Trudeau Intl to Siem ReapExplore the most affordable flight options available from Pierre Elliott Trudeau Intl to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2026.

Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2026.

Best flights from Pierre Elliott Trudeau Intl to Siem ReapDiscover carefully curated flight deals from Pierre Elliott Trudeau Intl to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 September 2026.

Discover carefully curated flight deals from Pierre Elliott Trudeau Intl to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 September 2026.

Last-minute flights from Pierre Elliott Trudeau Intl to Siem ReapDiscover last-minute flight deals from Pierre Elliott Trudeau Intl to Siem Reap. Data last updated 15 September 2026 and is based on user searches.

Discover last-minute flight deals from Pierre Elliott Trudeau Intl to Siem Reap. Data last updated 15 September 2026 and is based on user searches.

One-way flights from Pierre Elliott Trudeau Intl to Siem ReapSearch for one-way flight options from Pierre Elliott Trudeau Intl to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.

Search for one-way flight options from Pierre Elliott Trudeau Intl to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.

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Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Siem Reap that are best for you.

Best time to book a flight from Pierre Elliott Trudeau Intl to Siem Reap

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Cheapflights Insights

Related info for your journey

How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Region of Siem Reap?

Can I find deals for flights from Pierre Elliott Trudeau Intl to Siem Reap that include hotel bookings?

How can I find direct flights from Pierre Elliott Trudeau Intl to Siem Reap?

Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Siem Reap?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Pierre Elliott Trudeau Intl to Siem Reap

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Complete your trip

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Pierre Elliott Trudeau Intl and Siem Reap flights

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Can Cheapflights notify me if prices for flights from Pierre Elliott Trudeau Intl to Siem Reap become cheaper?

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Cheapest flights from Pierre Elliott Trudeau Intl to Siem Reap
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2026.

Best flights from Pierre Elliott Trudeau Intl to Siem Reap
Discover carefully curated flight deals from Pierre Elliott Trudeau Intl to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 September 2026.

Last-minute flights from Pierre Elliott Trudeau Intl to Siem Reap
Discover last-minute flight deals from Pierre Elliott Trudeau Intl to Siem Reap. Data last updated 15 September 2026 and is based on user searches.

One-way flights from Pierre Elliott Trudeau Intl to Siem Reap
Search for one-way flight options from Pierre Elliott Trudeau Intl to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.