Cheap flights from Ottawa to Siem Reap, Cambodia from C$ 2,226
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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — SAI
11 Dec — 18 Dec1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheap flight deals from Ottawa to Siem Reap
Enter your travel dates to find the best prices.
Best
Best flights from Ottawa to Siem Reap
Discover carefully curated flight deals from Ottawa to Siem Reap that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 11 November 2026.
Mon 15/35:40 p.m. -
2 stops32h 00m
Mon 5/47:25 p.m. -
2 stops40h 35m
Deal found 9/11C$ 2,226
Find flight deals from Ottawa to Siem Reap
Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) 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 11 November 2026.
Customize your flight search to find flights from Ottawa 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 11 November 2026.
Use the filters below to find and compare flights from Ottawa to Siem Reap that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
Quickest round-trip
OttawaSiem Reap
YOW Ottawa - SAI Siem Reap–Angkor Intl
YOWSAI
Ottawa
Mon 15/3
5:40 p.m.-12:40 p.m.
2 stops32h 00m
Siem Reap–Angkor Intl
Mon 5/4
7:25 p.m.-1:00 a.m.
2 stops40h 35m
C$ 2,226
Flights are sorted by cheapest round-trip flights first.
Deals found on 9/11
Sorted by cheapest first
Best time to book a flight from Ottawa to Siem Reap
Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Ottawa with our price prediction graph.
YOW-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 Ottawa to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Can I find deals for flights from Ottawa to Siem Reap that include hotel bookings?
Yes. In addition to deals on Ottawa to Siem Reap flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ottawa to Siem Reap?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Siem Reap.
Can I find deals for business class flights from Ottawa to Siem Reap?
Yes. Cheapflights offers flight deals from Ottawa 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.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Ottawa to Siem Reap?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Siem Reap from Ottawa today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Ottawa to Siem Reap?
Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Siem Reap for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Ottawa to Siem Reap with no change fees?
Yes! Cheapflights helps users easily find flights from Ottawa to Siem Reap with no change fees.
Can Cheapflights notify me if prices for flights from Ottawa to Siem Reap become cheaper?
Yes, Cheapflights offers price alerts on Ottawa to Siem Reap flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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