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Phnom Penh

$5,967+ Cheap flights from Ontario (ONT) to Phnom Penh (PNH)

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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PNH
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Phnom Penh Pochentong are usually found in February or September, booked 51 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Ontario to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Phnom Penh (PNH). 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 September 11, 2025.

Popular in

June

Cheapest in

February

Average price

$914
Highest demand for flights based on searches. 10% potential increase in price ($127 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Phnom Penh

One-way flights from Ontario to Phnom Penh
Search for one-way flight options from Ontario to Phnom Penh. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

This Arangrant deal was found by Cheapflights users on 9/11. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/410:56 pmONT - PNH
2 stops41h 59mEtihad Airways
Deal found 9/11$5,967

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Phnom Penh 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 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Ontario to Phnom Penh that are best for you.

Fly from

Ontario

Fly to

Phnom Penh

Route

Depart

Return

Price

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Sat 10/4

10:56 pm-6:55 am

2 stops41h 59m

$5,967

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Ontario to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh 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 Phnom Penh

How far ahead should I book a flight from Ontario to Phnom Penh?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Phnom Penh. Price data was last updated on August 29, 2025.

The price you pay for your flight from Ontario to Phnom Penh may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Ontario to Phnom Penh?

Currently, March is the cheapest month in which you can book a flight from Ontario to Phnom Penh (average of $983). Flying from Ontario to Phnom Penh in June is currently the most expensive (average of $1,553). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Phnom Penh

Get insights into the airlines that provide service to Phnom Penh. 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 Phnom Penh. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Ontario to Phnom Penh, such as Korean Air and China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very good
767 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Phnom Penh. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Ontario to Phnom Penh round-trip?

    Cheapflights users have booked flights from Ontario to Phnom Penh round-trip from $899. Another airline that can offer you cheap pricing is Korean Air. China Airlines is 15% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Ontario to Phnom Penh that include hotel bookings?

    Yes. In addition to deals on Ontario to Phnom Penh flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Phnom Penh?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Phnom Penh.

  • Can I find deals for business class flights from Ontario to Phnom Penh?

    Yes. Cheapflights offers flight deals from Ontario to Phnom Penh by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Phnom Penh?

    Currently, March is the cheapest month in which you can book a flight from Ontario to Phnom Penh (average of $983). Flying from Ontario to Phnom Penh in June is currently the most expensive (average of $1,553). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Ontario to Phnom Penh

Discover the top 2 airlines that operate flights from Ontario to Phnom Penh. 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 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$899Average$1,095FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$925Average$1,055FlexibilityNo cancel feeOn-time81%

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