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HK$4,214+ 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 21-7. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
8 Jul — 15 Jul1
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 8 June 2026.

Thu 25-611:45
HKG
-
ONT
1 stop25h 52m
United Airlines
Thu 2-705:00
ONT
-
HKG
2 stops46h 55m
United Airlines
Deal found 4-6HK$7,113
Thu 12-1110:35
HKG
-
ONT
1 stop23h 12m
United Airlines
Mon 16-1116:03
ONT
-
HKG
1 stop35h 17m
United Airlines
Deal found 4-6HK$7,120
Thu 18-620:10
HKG
-
ONT
1 stop35h 55m
星宇航空
Fri 3-723:55
ONT
-
HKG
1 stop19h 15m
星宇航空
Deal found 3-6HK$7,301
Fri 18-920:10
HKG
-
ONT
1 stop35h 55m
星宇航空
Sat 19-923:30
ONT
-
HKG
1 stop28h 25m
星宇航空
Deal found 5-6HK$7,316
Sun 13-920:10
HKG
-
ONT
1 stop35h 55m
星宇航空
Fri 18-923:30
ONT
-
HKG
1 stop28h 25m
星宇航空
Deal found 5-6HK$7,410
Fri 12-614:05
HKG
-
ONT
1 stop18h 55m
China Airlines
Thu 25-600:10
ONT
-
HKG
1 stop18h 05m
China Airlines
Deal found 7-6HK$7,567
Sat 20-617:35
HKG
-
ONT
1 stop15h 25m
China Airlines
Fri 26-600:10
ONT
-
HKG
1 stop21h 55m
China Airlines
Deal found 3-6HK$7,583
Fri 12-611:20
HKG
-
ONT
1 stop20h 45m
星宇航空
Sat 4-723:55
ONT
-
HKG
1 stop19h 00m
星宇航空
Deal found 7-6HK$7,661
Wed 24-608:00
HKG
-
ONT
1 stop24h 05m
Multiple Airlines
Wed 1-723:55
ONT
-
HKG
1 stop31h 05m
Multiple Airlines
Deal found 3-6HK$7,716
Tue 9-620:10
HKG
-
ONT
1 stop35h 55m
Multiple Airlines
Sat 18-723:55
ONT
-
HKG
1 stop19h 05m
Multiple Airlines
Deal found 7-6HK$7,747
Thu 18-614:05
HKG
-
ONT
1 stop18h 55m
China Airlines
Sat 4-700:45
ONT
-
HKG
1 stop21h 20m
China Airlines
Deal found 4-6HK$7,771

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 8 June 2026.

Return from

HK$5,906

One-way from

HK$4,324

Popular in

July

Cheapest in

November

Average price

HK$6,055
ANA
  • ANA
  • 1-9-29-10
  • Nonstop
  • 29h 40m total
  • Hong Kong to Los Angeles
Search Deals
星宇航空
  • 星宇航空
  • 19-6
  • 1 total stop
  • 20h 45m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (HK$837 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$134 potential savings vs. average return price).
Search Deals
Average for return flights in June 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 8 June 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

Fri 11-9

22:30-18:11

1 stop34h 41m

Ontario

Mon 14-9

13:56-18:55

1 stop37h 59m

HK$7,113

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 29-6

11:45-22:37

1 stop25h 52m

Ontario

Fri 3-7

18:39-05:00

1 stop19h 21m

HK$7,113

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 30-9

11:45-15:22

1 stop18h 37m

Ontario

Wed 7-10

06:05-18:55

1 stop21h 50m

HK$7,113

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 12-11

10:35-12:20

1 stop17h 45m

Ontario

Mon 16-11

11:20-06:45

1 stop27h 25m

HK$7,120

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 24-6

14:05-18:00

1 stop18h 55m

Ontario

Tue 30-6

00:45-16:35

1 stop24h 50m

HK$7,583

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Tue 1-9

21:15-18:40

1 stop36h 25m

Ontario

Sun 6-9

00:45-13:05

1 stop21h 20m

HK$7,583
Fastest return journey

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Mon 22-6

17:35-18:00

1 stop15h 25m

Ontario

Thu 25-6

00:10-09:15

1 stop18h 05m

HK$7,583

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 20-6

17:35-18:00

1 stop15h 25m

Ontario

Fri 26-6

00:10-13:05

1 stop21h 55m

HK$7,583

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Wed 24-6

11:45-20:46

2 stops24h 01m

Ontario

Wed 1-7

05:00-18:55

2 stops46h 55m

HK$8,734
Cheapest one-way
Fastest single journey

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Tue 16-6

17:35-18:00

1 stop15h 25m

HK$4,551

Flights are sorted by cheapest return flights first.

Deals found on 5-6

Showing 1-10 of 21 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 8 June 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
828 reviews
Check prices

Crew

8.5

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Overall

8.3

Food

7.8

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
828 reviews
China Airlines
8.3
Very Good
828 reviews
Check prices

Crew

8.5

Comfort

8.0

Entertainment

8.0

Boarding

8.3

Overall

8.3

Food

7.8

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$1,774.

  • 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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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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