$293 Find Cheap Flights from Ontario to Southeast Asia

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 4/22. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Southeast Asia.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Southeast Asia.
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Flight Deals

Cheap Flights from Ontario to Southeast Asia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok2 stops$727
Manila
Manila1 stop$679
Ho Chi Minh City
Ho Chi Minh City2 stops$702
Singapore
Singapore2 stops$690
Denpasar
Denpasar2 stops$819
Hanoi
Hanoi2 stops$640
Phuket City
Phuket City2 stops$765
Cebu City
Cebu City2 stops$608
Da Nang
Da Nang1 stop$697
Chiang Mai
Chiang Mai1 stop$814
Angeles City
Angeles City2 stops$751
Penang
Penang2 stops$847
Bangkok
Bangkok2 stops$727
Manila
Manila1 stop$679
Ho Chi Minh City
Ho Chi Minh City2 stops$702
Singapore
Singapore2 stops$690
Denpasar
Denpasar2 stops$819
Hanoi
Hanoi2 stops$640
Phuket City
Phuket City2 stops$765
Cebu City
Cebu City2 stops$608
Da Nang
Da Nang1 stop$697
Chiang Mai
Chiang Mai1 stop$814
Angeles City
Angeles City2 stops$751
Penang
Penang2 stops$847

Book Cheap Ontario to Southeast Asia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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

Mon, Apr 6 - Tue, Apr 21
Korean Air Logo
6:00 am - 11:30 pm
ONT
-
CEB
26h 30m
2 stops
Korean Air Logo
1:00 am - 5:15 pm
CEB
-
ONT
31h 15m
2 stops
$608Korean Air
Tue, Mar 3 - Sun, Mar 8
Delta Logo
7:30 am - 8:20 pm
ONT
-
CGK
45h 50m
2 stops
Delta Logo
9:50 pm - 10:33 pm
CGK
-
ONT
38h 43m
2 stops
$610Delta
Sun, Apr 5 - Mon, Apr 20
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
$658China Airlines
Fri, Apr 24 - Thu, May 21
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
$660China Airlines
Wed, Mar 4 - Tue, Apr 28
Multiple Airlines Logo
7:30 am - 10:20 pm
ONT
-
CEB
22h 50m
2 stops
Multiple Airlines Logo
1:00 am - 5:15 pm
CEB
-
ONT
31h 15m
2 stops
$661Multiple Airlines
Thu, Feb 5 - Sat, Feb 14
Multiple Airlines Logo
6:00 am - 10:20 pm
ONT
-
CEB
24h 20m
2 stops
Multiple Airlines Logo
12:15 am - 1:54 pm
CEB
-
ONT
29h 39m
2 stops
$702Multiple Airlines
Tue, Apr 21 - Tue, May 19
United Airlines Logo
6:00 am - 9:55 pm
ONT
-
SGN
25h 55m
2 stops
United Airlines Logo
7:00 am - 5:52 pm
SGN
-
ONT
24h 52m
2 stops
$714United Airlines
Tue, Mar 3 - Thu, Apr 23
United Airlines Logo
6:10 am - 4:15 pm
ONT
-
CGK
43h 05m
2 stops
United Airlines Logo
6:10 am - 10:45 pm
CGK
-
ONT
30h 35m
2 stops
$718United Airlines
Mon, Apr 6 - Thu, Apr 23
STARLUX Airlines Logo
11:10 pm - 7:30 pm
ONT
-
CRK
29h 20m
1 stop
STARLUX Airlines Logo
8:30 pm - 5:05 pm
CRK
-
ONT
35h 35m
1 stop
$789STARLUX Airlines
Wed, Mar 4 - Sun, Apr 19
STARLUX Airlines Logo
9:45 pm - 9:00 am
ONT
-
CRK
19h 15m
1 stop
STARLUX Airlines Logo
8:30 pm - 5:05 pm
CRK
-
ONT
35h 35m
1 stop
$837STARLUX 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 $337, 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 January, when tickets cost $769 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,452 and $1,337 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$293
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Ontario to Ho Chi Minh City

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 5 airlines serving 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.
8.9
STARLUX AirlinesOverall score based on 268 reviews
9.1Crew
8.8Entertainment
8.6Food
8.9Boarding
8.8Comfort
Airline reviews

Th tray was dirty when pulled it out. Still oily and food stains can clearly see last trip cleaner did not clean well. The toilet sink water did not drain quickly enough.

10.0 ExcellentAnonymous, Jan 2026
TPE - SFO
Read more STARLUX Airlines reviews

Th tray was dirty when pulled it out. Still oily and food stains can clearly see last trip cleaner did not clean well. The toilet sink water did not drain quickly enough.

Majority of the movie entertainment loaded in the aircraft were quite old.

Crew is very attentive. Another new airbus 350-900 plane. Very modern.

Passengers were confused and freaking out coz the flight information wasn’t showing on the board that was running with all the departing flights. B9 gate was still showing Cathay Pacific bound for HK 15:50 was on until 22:07. STARLUX staff cameater but didn’t let the passengers go in to pre departure area until 22:45 for the 23:30 boarding time

The aircraft is fairly new. The screen is big and it's great to enjoy movies on a long haul flight. However, the food quality , and drink and snack selections, have room for improvement.

Preboarding food selection is an excellent idea. On the other end I did know the choice. People in my area know the choice. It ends with I got my meal till most of them are half way to finish their meal.

Overall it’s good . However the food quality can be improved .

My luggage was forced open and broke the zipper. I received it in a huge STARLUX plastic bag. Unfortunately, I have a round trip ticket but might be my first and last with this airline

I went to the gate that showed on the flight board but they changed gates at the last minute and I missed my flight. I had to buy new ticket from EVA air to Manila and take 3 hour bus ride back to my home. Will never fly Starlux again!

Starlux was great service and awesome food and drinks👍🏼 will take starlux again for my next vacation👍🏼

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

This was an amazing flight. The crew was great. The service was great. The food provided was great.

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

Flight attendants. Food, entertainment and most of all, be on time.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

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

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

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

They need to improve on how the plane lands cause it was not smooth at all.

I did not like how the plane landed. It was not smooth.

Been flying with China Airline over years many times. Good experience with them, no issues.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

The flight crew where really good. Better then the crew from BNE to SFO

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

left on time, reasonable boarding process arrived early luggage came out quickly

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

It was never explained why the departure flight was canceled and delayed for 1.5 hours. It would have been nice to stick with the original itinerary.

Flight was good took off on time arrived early. Crew was awesome and did a great job. Very helpful and courteous. Bags arrived super fast with no hassles. Great flight!!!!!!

Many movies do not have captions, which would have been helpful when you have to live with the flight engine noise.

Everything was fantastic!!!! I can’t wait to fly home 😃!!!!!

Great. Always great service and their pilots know how to land planes properly

Flight was really good, considering the semi bad weather in MNL. Food was great. Crew kept offering throughout the flight. Wifi signal was intermittent though.

It’s sad how legacy airlines feel like budget airlines now. Cramped space Non reclining seats No inflight entertainment (need to connect via your own device) Saving grace is the crew. Truly nice and sincere service.

It was great! The flight was on time and had a smoother flight

I was glad that the plane was not totally full.

reach the standard, crew tried to fix up issues fast.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports