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Phnom Penh

$412+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PNH
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$811
(ScholarTrip)

One-way from

$412
(ScholarTrip)

Popular in

June

Cheapest in

February

Average price

$1,237
From Ontario to Phnom Penh Pochentong
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One-way flight from Ontario to Phnom Penh Pochentong
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Highest demand for flights based on searches. 10% potential increase in price ($126 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 July 2025
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Find flight deals from Ontario to Phnom Penh

Cheapest flights from Ontario to Phnom Penh
Explore the most affordable flight options available from Ontario to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This ScholarTrip deal was found by Cheapflights users on 7/30. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:00 amONT - PNH
2 stops26h 10mKorean Air
Tue 9/211:30 pmPNH - ONT
2 stops37h 12mKorean Air
Deal found 7/30$811
This oojo deal was found by Cheapflights users on 7/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1612:45 amONT - PNH
1 stop25h 20mChina Airlines
Mon 9/85:10 pmPNH - ONT
1 stop39h 30mChina Airlines
Deal found 7/29$865
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/196:37 amONT - PNH
2 stops25h 33mDelta
Thu 10/2311:30 pmPNH - ONT
2 stops38h 09mDelta
Deal found 7/29$920
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2612:45 amONT - PNH
2 stops27h 30mMultiple Airlines
Wed 9/38:15 amPNH - ONT
2 stops24h 25mMultiple Airlines
Deal found 7/30$1,045
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/201:42 pmONT - PNH
2 stops43h 13mUnited Airlines
Sun 9/2811:55 pmPNH - ONT
2 stops36h 57mUnited Airlines
Deal found 7/29$1,306
This oojo deal was found by Cheapflights users on 7/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:00 amONT - PNH
3 stops44h 15mQatar Airways
Thu 11/65:10 pmPNH - ONT
3 stops45h 22mQatar Airways
Deal found 7/29$1,444

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 July 30, 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

Mon 8/18

6:00 am-10:10 pm

2 stops26h 10m

Phnom Penh Pochentong

Tue 9/2

11:30 pm-10:42 pm

2 stops37h 12m

$811

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Sat 8/16

12:45 am-4:05 pm

1 stop25h 20m

Phnom Penh Pochentong

Mon 9/8

5:10 pm-6:40 pm

1 stop39h 30m

$865

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Sun 10/19

6:37 am-10:10 pm

2 stops25h 33m

Phnom Penh Pochentong

Thu 10/23

11:30 pm-11:39 pm

2 stops38h 09m

$920

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Tue 8/26

12:45 am-6:15 pm

2 stops27h 30m

Phnom Penh Pochentong

Wed 9/3

8:15 am-6:40 pm

2 stops24h 25m

$1,045

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Sat 9/20

1:42 pm-10:55 pm

2 stops43h 13m

Phnom Penh Pochentong

Sun 9/28

11:55 pm-10:52 pm

2 stops36h 57m

$1,306

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Mon 8/18

6:00 am-10:10 pm

2 stops26h 10m

$412

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Mon 8/11

12:45 am-9:50 am

1 stop19h 05m

$494

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Wed 8/13

12:45 am-6:15 pm

2 stops27h 30m

$568

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Mon 8/11

2:57 pm-4:15 pm

3 stops35h 18m

$754

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 July 25, 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 $988). Flying from Ontario to Phnom Penh in June is currently the most expensive (average of $1,549). 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.

How much does it cost to fly round-trip from Ontario to Phnom Penh?

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 July 30, 2025.
Read through reviews of airlines operating flights from Ontario to Phnom Penh, such as Korean Air, China Airlines, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

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
1,121 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

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
754 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

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.
Delta
8.0
Very good
7,980 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

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.
Qatar Airways
7.4
Good
3,607 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

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.
United Airlines
7.4
Good
8,896 reviews
Korean Air
8.4
Very good
1,121 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Overall

8.4

Food

8.1

Entertainment

8.2

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 $811. Other airlines that can offer you cheap pricing are China Airlines, from $865, and Delta, from $920. Korean Air is 23% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Ontario to Phnom Penh one-way?

    For one-way options, check prices for Korean Air. According to our data, you can fly for as low as $412. Users have also found prices from $494 and $754 on China Airlines and Qatar Airways, respectively.

  • 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 $988). Flying from Ontario to Phnom Penh in June is currently the most expensive (average of $1,549). 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

Browse thousands of different options on Cheapflights for your next trip

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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$910Average$1,078FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$925Average$1,055FlexibilityNo cancel feeOn-time81%

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