$509 Find Cheap Flights from Ontario to Hong Kong

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 Hong Kong departing on 8/17. 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.
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Best Hong Kong Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Hong Kong
Hong Kong1 stop$886
Hong Kong
Hong Kong1 stop$886

Cheap Flights from Ontario to Hong Kong (ONT-HK0)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Hong Kong 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 Hong Kong

Mon, Aug 4 - Thu, Sep 4
STARLUX Airlines Logo
11:45 pm - 9:55 amONT-HKG
19h 10m1 stop
STARLUX Airlines Logo
8:10 pm - 5:05 pmHKG-ONT
35h 55m1 stop
$886STARLUX Airlines
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Tue, Sep 30 - Wed, Oct 8
China Airlines Logo
12:10 am - 10:05 amONT-HKG
18h 55m1 stop
China Airlines Logo
5:30 pm - 6:00 pmHKG-ONT
15h 30m1 stop
$895China Airlines
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Mon, Nov 3 - Wed, Dec 24
Korean Air Logo
6:45 am - 11:20 amONT-HKG
36h 35m2 stops
Korean Air Logo
6:10 pm - 5:29 pmHKG-ONT
39h 19m2 stops
$897Korean Air
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Mon, Aug 4 - Wed, Sep 3
Korean Air Logo
6:25 am - 10:30 pmONT-HKG
25h 05m2 stops
Korean Air Logo
12:45 am - 5:21 pmHKG-ONT
31h 36m2 stops
$909Korean Air
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Tue, Aug 12 - Fri, Sep 12
 Logo
4:00 pm - 9:55 amONT-HKG
26h 55m2 stops
 Logo
11:20 am - 5:05 pmHKG-ONT
20h 45m1 stop
Tue, Oct 21 - Tue, Dec 9
Delta Logo
6:00 am - 4:20 pmONT-HKG
43h 20m2 stops
Delta Logo
12:55 am - 10:42 pmHKG-ONT
37h 47m2 stops
$984Delta
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Fri, Oct 10 - Sun, Oct 26
 Logo
11:10 pm - 9:55 amONT-HKG
19h 45m1 stop
 Logo
5:35 pm - 5:50 pmHKG-ONT
15h 15m1 stop
$1,037
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Sun, Sep 14 - Sun, Oct 5
Delta Logo
5:51 pm - 10:30 pmONT-HKG
37h 39m2 stops
Delta Logo
12:20 pm - 11:46 pmHKG-ONT
26h 26m2 stops
$1,039Delta
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Tue, Oct 21 - Wed, Dec 10
United Airlines Logo
1:15 pm - 6:55 pmONT-HKG
38h 40m2 stops
United Airlines Logo
10:35 am - 9:59 amHKG-ONT
15h 24m1 stop
$1,069United Airlines
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Tue, Sep 23 - Tue, Sep 30
United Airlines Logo
6:50 pm - 5:00 amONT-HKG
19h 10m1 stop
United Airlines Logo
11:15 am - 12:13 pmHKG-ONT
15h 58m1 stop
$1,078United Airlines
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KAYAK's insights & trends for Ontario to Hong Kong flights

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

What is the cheapest month to fly from Ontario to Hong Kong?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Hong Kong, 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 Hong Kong is April, when tickets cost $940 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,538 and $1,504 respectively.

How far in advance should I book a flight from Ontario to Hong Kong?

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 Hong Kong, 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 Hong Kong, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.


Good to know

Low seasonDecember
High seasonOctober
Cheapest flight$509
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Ontario to Hong Kong

FAQs - booking Hong Kong flights

  • How does KAYAK find such low prices on flights from Ontario to Hong Kong?

    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 Hong Kong.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Hong Kong 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 Hong Kong?

    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 Hong Kong 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 Hong Kong?

    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 Hong Kong up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 3 airlines serving from Ontario to Hong Kong

Need help choosing which airline to fly with from Ontario to Hong Kong? 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 733 reviews
8.0Comfort
7.8Food
8.3Boarding
8.5Crew
8.0Entertainment
Airline reviews

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

10.0 ExcellentAnonymous, May 2025SEA - TPE
Read more China Airlines reviews

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

Most relaxing long distance flight I have been on. And I have flown on many.

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

My ticket did not indication which group I was in for boarding; the gate attended help me

I would like to commend the staff from this flight. They all looked happy and I can tell they love what they are doing and constantly smiling while serving the passengers. Special mention to the guy FA in our section. I did not get his name but he is so far the best F.A I have ever encountered!

staff are super nice and effiecient! It was a very comfortable and relaxing flight

When I booked a premium economy ticket. I then had to pay $100+ to book my seat.

Boarding could have been a little bit better but other than that it was a pretty good experience. I think because of the stowaway to Paris France recently they are being extra diligent about boarding passes at the gate. But they boarded the back of the plane first, and that's something I really think needs to start in the USA.

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.

Flight was delayed at the last minute for six hours. Instead of delaying it to a normal hour, they moved it to 10 pm to essentially make it a redeye. There was no compensation or benefit offered for this inconvenience. Once on the plane, Inpaid for WiFi twice with both times it not working because of a “weak WiFi signal”, according to the flight attendants. They also chose the farther possible gates in both airports from the entrance/exit, even though they were one of the few active flights left so late in the evening. Overall it was pretty horrible.

I had high expectations but met with a below average experience. I hope the Airline will take a notice and improve.

I've stomach problems after 2 hours of flight, Iris, the flight purser not only did her best to make me feel comfortable, she went above and beyond providing pain relievers medicines and ointment. She look and found a doctor passenger on the flight to provide advise. She even report on ground staffs about my condition and provide wheelchair upon arrival. Kudos to her and Cathay Pacific!

So so, crew was overly professional and lacks human touch. Equipment is very old, especially the HKG-PVG CX366 flight. That plane along with its decor must have twenty years of history, or at least I had that impression.

Worst experience I have ever had with any airline in over 25 years.

very professional and very attentive to my Special Needs as I required a Wheel Chair and assistance to board

Crew was great. But a bit understaffed. The business class seat, etc were dated. But comfortable. Some legs had entertainment system from a decade ago. Selections were rather poor. Food was mediocre at best. Actually poor for business class standards. I liked the lounge in Hong Kong. Showers were great. Food was nice.

Very noisy and careless crew on this overnight flight. They should understand customers want to sleep

Everything was fine and I have no complaints or things to note.

Highly impressive. On time. Smooth and fast boarding and disembarkment. Really great service

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

The first flight was better in terms of the aircraft.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Everything you need to know for your flight from Ontario to Hong Kong

Information on your arrival and departure airports

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