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HK$4,184+ 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 17-5. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
5 May — 12 May1
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 5 April 2026.

Sat 17-1011:45
HKG
-
ONT
1 stop15h 35m
United Airlines
Sat 24-1018:53
ONT
-
HKG
1 stop19h 52m
United Airlines
Deal found 31-3HK$6,723
Thu 1-1022:50
HKG
-
ONT
1 stop33h 15m
Multiple Airlines
Wed 7-1023:10
ONT
-
HKG
1 stop28h 45m
Multiple Airlines
Deal found 2-4HK$7,036
Sat 19-911:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Wed 30-923:10
ONT
-
HKG
1 stop19h 45m
星宇航空
Deal found 2-4HK$7,169
Tue 16-610:15
HKG
-
ONT
1 stop22h 45m
China Airlines
Mon 22-600:10
ONT
-
HKG
1 stop18h 55m
China Airlines
Deal found 31-3HK$7,444
Mon 27-413:35
HKG
-
ONT
1 stop18h 30m
Multiple Airlines
Fri 1-523:10
ONT
-
HKG
1 stop19h 50m
Multiple Airlines
Deal found 1-4HK$7,498
Sat 27-611:45
HKG
-
ONT
2 stops40h 02m
United Airlines
Wed 8-705:00
ONT
-
HKG
2 stops33h 00m
United Airlines
Deal found 31-3HK$7,506
Wed 11-1122:30
HKG
-
ONT
1 stop29h 50m
United Airlines
Sun 15-1113:33
ONT
-
HKG
1 stop37h 47m
United Airlines
Deal found 1-4HK$7,514
Wed 9-911:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Wed 23-923:10
ONT
-
HKG
1 stop28h 45m
星宇航空
Deal found 3-4HK$7,553
Sun 3-521:40
HKG
-
ONT
1 stop34h 25m
星宇航空
Fri 22-523:10
ONT
-
HKG
1 stop20h 00m
星宇航空
Deal found 3-4HK$7,624
Sat 17-1015:25
HKG
-
ONT
2 stops34h 44m
Multiple Airlines
Sat 24-1018:58
ONT
-
HKG
2 stops23h 02m
Multiple Airlines
Deal found 31-3HK$7,663
Fri 15-520:10
HKG
-
ONT
1 stop35h 55m
星宇航空
Fri 22-523:10
ONT
-
HKG
1 stop28h 45m
星宇航空
Deal found 31-3HK$7,702
Sat 31-1014:05
HKG
-
ONT
1 stop18h 45m
China Airlines
Tue 3-1122:50
ONT
-
HKG
1 stop28h 10m
China Airlines
Deal found 30-3HK$7,726

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 5 April 2026.

Return from

HK$5,383

One-way from

HK$4,184

Popular in

April

Cheapest in

November

Average price

HK$8,298
Air China
  • Air China
  • 4-5-17-5
  • 2 total stops
  • 52h 10m total
  • Hong Kong to Los Angeles
Search Deals
China Airlines
  • China Airlines
  • 17-5
  • 1 total stop
  • 36h 50m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (HK$415 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$162 potential savings vs. average return price).
Search Deals
Average for return flights in April 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 5 April 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

Mon 4-5

11:45-12:22

1 stop15h 37m

Ontario

Sun 17-5

06:00-05:00

1 stop32h 00m

HK$8,689

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 17-6

11:45-17:56

1 stop21h 11m

Ontario

Thu 18-6

18:30-18:55

2 stops33h 25m

HK$9,481
Fastest return journey

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 26-6

17:35-18:00

1 stop15h 25m

Ontario

Mon 6-7

00:45-13:05

1 stop21h 20m

HK$9,716

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 1-5

22:30-20:36

2 stops37h 06m

Ontario

Thu 7-5

13:30-05:00

1 stop24h 30m

HK$10,053

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 19-4

11:45-12:20

1 stop15h 35m

Ontario

Mon 4-5

06:00-18:55

1 stop21h 55m

HK$10,225

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 14-5

10:15-18:00

1 stop22h 45m

Ontario

Sat 30-5

00:10-09:15

1 stop18h 05m

HK$10,766

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 27-4

11:45-12:20

1 stop15h 35m

Ontario

Fri 1-5

05:00-18:55

2 stops22h 55m

HK$10,844

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 19-4

18:15-13:18

2 stops34h 03m

Ontario

Mon 4-5

14:08-16:45

2 stops35h 37m

HK$11,604

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 17-4

01:25-23:46

2 stops37h 21m

Ontario

Sat 25-4

07:30-16:25

2 stops41h 55m

HK$11,808

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sun 17-5

01:25-19:17

2 stops32h 52m

Ontario

Mon 1-6

12:04-09:10

2 stops30h 06m

HK$11,839

Flights are sorted by cheapest return flights first.

Deals found on 1-4

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 5 April 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
815 reviews
Check prices

Crew

8.5

Overall

8.3

Comfort

8.0

Food

7.8

Entertainment

8.0

Boarding

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
815 reviews
China Airlines
8.3
Very Good
815 reviews
Check prices

Crew

8.5

Overall

8.3

Comfort

8.0

Food

7.8

Entertainment

8.0

Boarding

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.

  • 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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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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