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HK$4,167+ Cheap flights to Ontario

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 15-5. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
3 Jun — 10 Jun1
1 adult
1 adult, Economy, 0 bags

Flights to Ontario in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Ontario
Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 4 May 2026.

Sat 13-613:10
HKG
-
ONT
1 stop18h 55m
Multiple Airlines
Sat 18-723:45
ONT
-
HKG
1 stop28h 10m
Multiple Airlines
Deal found 29-4HK$7,136
Fri 5-608:10
HKG
-
ONT
1 stop23h 55m
Multiple Airlines
Sat 20-623:10
ONT
-
HKG
1 stop21h 55m
Multiple Airlines
Deal found 30-4HK$7,332
Mon 15-611:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Mon 29-623:10
ONT
-
HKG
1 stop19h 45m
星宇航空
Deal found 30-4HK$7,449
Sat 23-511:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Fri 29-523:10
ONT
-
HKG
1 stop28h 45m
星宇航空
Deal found 30-4HK$7,496
Sun 3-511:45
HKG
-
ONT
1 stop15h 37m
United Airlines
Sun 10-505:00
ONT
-
HKG
2 stops22h 55m
United Airlines
Deal found 2-5HK$7,512
Sat 23-513:10
HKG
-
ONT
1 stop18h 55m
Multiple Airlines
Sat 30-523:10
ONT
-
HKG
1 stop28h 45m
Multiple Airlines
Deal found 1-5HK$7,684
Mon 1-617:35
HKG
-
ONT
1 stop15h 25m
China Airlines
Thu 4-600:10
ONT
-
HKG
1 stop25h 25m
China Airlines
Deal found 4-5HK$7,700
Fri 12-614:05
HKG
-
ONT
1 stop18h 55m
China Airlines
Sat 27-600:10
ONT
-
HKG
1 stop18h 05m
China Airlines
Deal found 30-4HK$7,716
Tue 2-617:35
HKG
-
ONT
1 stop15h 25m
China Airlines
Mon 15-600:10
ONT
-
HKG
1 stop18h 55m
China Airlines
Deal found 30-4HK$7,763
Sun 24-520:10
HKG
-
ONT
1 stop36h 50m
China Airlines
Mon 1-600:10
ONT
-
HKG
1 stop18h 05m
China Airlines
Deal found 2-5HK$7,770
Sat 16-509:55
HKG
-
ONT
1 stop22h 10m
Multiple Airlines
Sat 23-523:10
ONT
-
HKG
1 stop19h 50m
Multiple Airlines
Deal found 1-5HK$7,778

Find flight deals to Ontario

Find the latest flights to Ontario in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 4 May 2026.

Return from

HK$5,170

One-way from

HK$4,167

Popular in

April

Cheapest in

November

Average price

HK$7,206
Air China
  • Air China
  • 1-6-8-6
  • 2 total stops
  • 46h 05m total
  • Hong Kong to Los Angeles
Search Deals
15-5
  • 15-5
  • 1 total stop
  • 18h 55m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (HK$693 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (HK$241 potential savings vs. average return price).
Search Deals
Average for return flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Ontario that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 4 May 2026.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Departure

Return

Price

Cheapest return flight

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 22-10

11:45-22:59

1 stop26h 14m

Ontario

Mon 26-10

18:53-19:20

1 stop33h 27m

HK$7,512

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 22-6

22:30-12:12

1 stop28h 42m

Ontario

Fri 10-7

06:00-18:55

1 stop21h 55m

HK$7,512

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Tue 13-10

11:45-15:22

1 stop18h 37m

Ontario

Sun 1-11

16:03-06:45

1 stop22h 42m

HK$7,512

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 25-9

13:35-17:05

1 stop18h 30m

Ontario

Mon 5-10

23:10-09:55

1 stop19h 45m

HK$7,684
Fastest return journey

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 25-5

17:35-18:00

1 stop15h 25m

Ontario

Mon 1-6

00:10-10:05

1 stop18h 55m

HK$7,770

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 13-6

13:35-17:05

1 stop18h 30m

Ontario

Fri 3-7

23:45-10:10

1 stop19h 25m

HK$8,624

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 17-5

18:15-23:58

2 stops44h 43m

Ontario

Sat 30-5

06:00-09:10

2 stops36h 10m

HK$9,180

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 6-7

19:40-23:11

2 stops42h 31m

Ontario

Tue 21-7

06:02-15:10

2 stops42h 08m

HK$9,188

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 23-5

15:25-12:12

2 stops35h 47m

Ontario

Thu 28-5

19:41-08:50

2 stops22h 09m

HK$9,376

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 8-7

01:25-23:11

2 stops36h 46m

Ontario

Sun 19-7

06:02-21:55

2 stops48h 53m

HK$9,478

Flights are sorted by cheapest return flights first.

Deals found on 29-4

Showing 1-10 of 24 resultsSorted by cheapest first
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Best time to book a flight to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario with our price prediction graph.
Estimated return 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 to Ontario

What are the cheapest airlines that fly to Ontario?

The cheapest airline flying from Hong Kong to Ontario is China Airlines.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 4 May 2026.
Get a feel of what it's like to fly with China Airlines to the United States by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very Good
819 reviews
Check prices

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Food

7.8

Crew

8.5

Overall

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.
China Airlines
8.3
Very Good
819 reviews
China Airlines
8.3
Very Good
819 reviews
Check prices

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Food

7.8

Crew

8.5

Overall

8.3

Reviews

1 / 20
10.0
Excellent

A,Feb 2026

SEA - TPE

China Airlines has improved significantly over the years. This is the first time we fly on their business class after 20+ years. Both hardware and services impressed us. Will definitely fly with again in the future.

FAQs about flying to Ontario

  • What airport do you fly into for flights to Ontario?

    For a flight to Ontario, you will be flying into Ontario. Ontario (ONT) is just 4.9 km from the centre of the city.

  • Can I find cheaper flights to Ontario if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ontario on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ontario?

    Based on reviews from Cheapflights users, China Airlines is rated the highest out of the airlines that fly to Ontario.

  • What is the cheapest airport to fly to in Ontario?

    Ontario is currently the cheapest airport to fly to in Ontario. One-way flights to Ontario typically cost HK$479, while return flights cost around HK$589.

  • Does Ontario have rental cars?

    Yes. Those touching down at Ontario can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ontario?

    Yes. Ontario has hotels nearby for those requiring accommodations. Delta Hotels by Marriott Ontario Airport is the closest property to Ontario (0.0 km away from Ontario).

See more FAQs

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Find flights to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

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How does Cheapflights help users find flights to Ontario?

Deals for Ontario flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets to Ontario?

Cheapflights helps you find that perfect flight to Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights to Ontario with no change fees?

Certainly. Search results for flights to Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Ontario flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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