$466 Find Cheap Flights from Hong Kong to Ontario - 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 to Ontario departing on 9/9. 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

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Hong Kong to Ontario

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

Fri, Oct 16 - Fri, Oct 16
United Airlines Logo
11:45 am - 3:22 pmHKG  Hong Kong Intl-ONT Ontario
18h 37m1 stop San Francisco
United Airlines Logo
6:32 pm - 5:00 amONT  Ontario-HKG Hong Kong Intl
19h 28m1 stop San Francisco
$902United Airlines
Sat, Jan 30 - Sat, Feb 13
United Airlines Logo
10:30 pm - 11:06 pmHKG  Hong Kong Intl-ONT Ontario
16h 36m1 stop San Francisco
United Airlines Logo
1:00 pm - 6:45 amONT  Ontario-HKG Hong Kong Intl
49h 45m2 stops Denver Intl San Francisco
$907United Airlines
Sat, Oct 17 - Mon, Nov 2
United Airlines Logo
10:30 pm - 12:46 pmHKG  Hong Kong Intl-ONT Ontario
29h 16m2 stops San Francisco Denver Intl
United Airlines Logo
1:29 pm - 6:45 amONT  Ontario-HKG Hong Kong Intl
25h 16m2 stops Denver Intl San Francisco
$907United Airlines
Mon, Nov 2 - Wed, Nov 11
United Airlines Logo
10:35 am - 12:29 pmHKG  Hong Kong Intl-ONT Ontario
17h 54m1 stop San Francisco
United Airlines Logo
6:00 am - 7:20 pmONT  Ontario-HKG Hong Kong Intl
21h 20m1 stop San Francisco
$907United Airlines
Fri, Jan 29 - Sat, Feb 13
United Airlines Logo
10:30 pm - 11:06 pmHKG  Hong Kong Intl-ONT Ontario
16h 36m1 stop San Francisco
United Airlines Logo
6:53 pm - 6:45 amONT  Ontario-HKG Hong Kong Intl
19h 52m1 stop San Francisco
$907United Airlines
Sat, Oct 17 - Mon, Nov 2
United Airlines Logo
11:45 am - 5:46 pmHKG  Hong Kong Intl-ONT Ontario
21h 01m1 stop San Francisco
United Airlines Logo
6:37 pm - 7:20 pmONT  Ontario-HKG Hong Kong Intl
32h 43m1 stop San Francisco
$907United Airlines
Mon, Oct 5 - Fri, Oct 9
United Airlines Logo
11:45 am - 3:22 pmHKG  Hong Kong Intl-ONT Ontario
18h 37m1 stop San Francisco
United Airlines Logo
6:00 am - 6:55 pmONT  Ontario-HKG Hong Kong Intl
21h 55m1 stop San Francisco
$907United Airlines
Sat, Oct 17 - Sun, Oct 25
United Airlines Logo
11:45 am - 3:22 pmHKG  Hong Kong Intl-ONT Ontario
18h 37m1 stop San Francisco
United Airlines Logo
9:25 am - 7:20 pmONT  Ontario-HKG Hong Kong Intl
18h 55m1 stop San Francisco
$907United Airlines
Thu, Sep 3 - Sun, Sep 6
China Airlines Logo
2:05 pm - 6:40 pmHKG  Hong Kong Intl-ONT Ontario
19h 35m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
12:45 am - 10:05 amONT  Ontario-HKG Hong Kong Intl
18h 20m1 stop Taipei City Taiwan Taoyuan Intl
$923China Airlines
Thu, Sep 3 - Tue, Sep 15
China Airlines Logo
2:05 pm - 6:40 pmHKG  Hong Kong Intl-ONT Ontario
19h 35m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
12:10 am - 9:15 amONT  Ontario-HKG Hong Kong Intl
18h 05m1 stop Taipei City Taiwan Taoyuan Intl
$924China Airlines
Booking Insights

KAYAK's insights & trends for flights to Ontario

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

What are the most popular airlines flying to Ontario?

The most popular airline among KAYAK users flying to Ontario is United Airlines, followed by Cathay Pacific and EVA Air.

Good to know

Low season

April

Cheapest flight

$466
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Hong Kong to Ontario

FAQs - booking Ontario flights

  • How far is Ontario Airport from central Ontario?

    The distance between Ontario Airport and downtown Ontario is 3 miles.

  • What is the name of Ontario’s airport?

    There is only 1 airport in Ontario, called Ontario Airport (ONT). It can also be referred to as Ontario or Ontario Intl.

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

    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 to Ontario.

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

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

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

    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 to Ontario 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 to Ontario?

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

  • How many direct flights to Ontario are there each week?

    Each week there are around 980 direct flights from within Hong Kong to Ontario. The most common day for departures is Sunday, with 18% of flights taking off on this day.

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Reviews of the top airline flying from Hong Kong to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Hong Kong to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? 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 841 reviews
8.0Entertainment
8.5Crew
7.8Food
8.3Boarding
8.0Comfort
Airline reviews

The crew are amazing. Very professional, polite, kind, and accommodating.

10.0 ExcellentSatit, Mar 2026
Read more China Airlines reviews

The crew are amazing. Very professional, polite, kind, and accommodating.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

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.

The flight who provided services on my row had some not-nice attitude and not smiling at all.

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

The plane was uncomfortable. I paid extra for more legroom but the seat was still uncomfortable. Other seats on the same exact row didn’t have to pay extra but still have extra legroom. I didn’t understand why I needed to pay $170 for. It was Iike China airline just wants to make money off their passengers. It was unfair.

Baggage made it successfully to destination despite short layover. Appreciate that.

Staff were good and nice. There should me 3 meals instead of only 2 and snacks.

Excellent staff made the boarding process fast and easy. Friendly crews on both flights from Saigon to Taipei and Taipei to Los Angeles. Will fly China Airlines again.

this is a great airline to fly on. I have not ever had a bad experiance with China Air.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario