₱27,291 Find Cheap Flights from Ontario to Southeast Asia - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Southeast Asia departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Ontario to Southeast Asia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Ontario to Southeast Asia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Southeast Asia

Thu, Aug 13 - Tue, Aug 25
Korean Air Logo
6:20 am - 11:30 pm
ONT
-
CEB
26h 10m
2 stops
Korean Air Logo
1:00 am - 5:21 pm
CEB
-
ONT
31h 21m
2 stops
₱46,494Korean Air
Fri, Aug 14 - Mon, Sep 7
China Airlines Logo
12:45 am - 11:05 am
ONT
-
CEB
19h 20m
1 stop
China Airlines Logo
12:05 pm - 6:40 pm
CEB
-
ONT
21h 35m
1 stop
₱48,038China Airlines
Thu, Aug 13 - Tue, Aug 25
Korean Air Logo
6:20 am - 11:30 pm
ONT
-
CEB
26h 10m
2 stops
Korean Air Logo
1:00 am - 5:21 pm
CEB
-
ONT
31h 21m
2 stops
₱50,076Korean Air
Sat, Oct 17 - Sun, Nov 22
China Airlines Logo
12:10 am - 11:05 am
ONT
-
CEB
19h 55m
1 stop
China Airlines Logo
12:10 pm - 5:05 pm
CEB
-
ONT
20h 55m
1 stop
₱50,137China Airlines
Tue, Sep 1 - Mon, Sep 21
Korean Air Logo
6:20 am - 11:30 pm
ONT
-
CEB
26h 10m
2 stops
Korean Air Logo
1:00 am - 10:40 pm
CEB
-
ONT
36h 40m
2 stops
₱53,163Korean Air
Thu, Aug 6 - Wed, Aug 19
Korean Air Logo
6:20 am - 11:30 pm
ONT
-
CEB
26h 10m
2 stops
Korean Air Logo
1:00 am - 5:21 pm
CEB
-
ONT
31h 21m
2 stops
₱54,953Korean Air
Thu, Sep 17 - Sun, Sep 27
China Airlines Logo
12:10 am - 11:05 am
ONT
-
CEB
19h 55m
1 stop
China Airlines Logo
12:05 pm - 6:00 pm
CEB
-
ONT
20h 55m
1 stop
₱55,633China Airlines
Thu, Sep 10 - Tue, Sep 22
China Airlines Logo
12:45 am - 11:05 am
ONT
-
CEB
19h 20m
1 stop
China Airlines Logo
12:05 pm - 6:00 pm
CEB
-
ONT
20h 55m
1 stop
₱55,756China Airlines
Mon, Jan 4 - Fri, Mar 26
STARLUX Airlines Logo
9:45 pm - 10:40 am
ONT
-
MNL
20h 55m
1 stop
STARLUX Airlines Logo
11:50 am - 4:55 pm
MNL
-
ONT
20h 05m
1 stop
₱56,682STARLUX Airlines
Wed, Aug 5 - Fri, Aug 21
STARLUX Airlines Logo
11:55 pm - 9:00 am
ONT
-
CRK
18h 05m
1 stop
STARLUX Airlines Logo
10:00 am - 5:40 pm
CRK
-
ONT
22h 40m
1 stop
₱57,979STARLUX Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Southeast Asia flights

Get data-powered insights and trends into flights from Ontario to Southeast Asia to help you find the cheapest flights, the best time to fly and much more.

Can I save money by flying with a layover from Ontario to Southeast Asia?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of ₱21,957, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Ontario to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Southeast Asia is March, when tickets cost ₱45,692 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is ₱87,925 and ₱83,850 respectively.

How far in advance should I book a flight from Ontario to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Southeast Asia, you should book around 4 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Find deals

Good to know

Low season

September
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from Ontario to Southeast Asia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Southeast Asia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Ontario to Southeast Asia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Southeast Asia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ontario to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Southeast Asia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.3
China AirlinesOverall score based on 838 reviews
7.8Food
8.3Boarding
8.0Comfort
8.5Crew
8.0Entertainment
Airline reviews

We were not sat together for the longeset duration of our travel very uncomfortable didnt enjoy that they fed us at 2 am

2.0 MediocreAnonymous, Jul 2026
SFO - TPE
Read more China Airlines reviews

We were not sat together for the longeset duration of our travel very uncomfortable didnt enjoy that they fed us at 2 am

I love my Delta crew, they were so welcoming and helpful.

Better organization of boarding procedures. Terrible leadership guiding people to gates.

I did not take the flight, tried to cancel it right after I booked it, but was unable to reach anyone. I blame Kayak for this situation because they sent the booking through another company and I was unable to get anyone to talk to me about the situation. I had to just take the hit and pay for another flight through Cathay Pacific, which was wonderful. I will never use Kayak again. (I bet they don’t post this review!) I’ll just post about them on social media sites. I don’t want anyone to have to go through the hassle and expense I dealt with.

Unable to set seat assignment. Got a call from presumably “China airlines representative” but was asking for an exorbitant amount for the seat assignment. Was traveling as a family end up being assigned to different seats as a result. Will never use underpricer again.

Not many selections for entertainment. Bulk head seats are no longer available with out fee at the counter. That’s pretty lame.

I would have liked to know how to order a special meal (for medical purposes) before the flight.

Ask flight attendant for water during flight and she was a little rude get the water.

For a long-haul flight, the crew did a very good job of keeping the lavatories clean and the aisles clear.

The check-in crew at SF did not put on breakable glass stickers on check-in baggages which caused my antique whisky bottle to break during transportation.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports

Ontario (ONT)