Find flights
Airlines
Travel Guide

HK$3,678+ Cheap flights to Ontario

— ONT
11 Oct — 18 Oct1
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

Tue 6-1020:10 -
1 stop35h 55m
Tue 15-1221:45 -
1 stop28h 45m
Deal found 7-9HK$7,057
Tue 10-1119:45 -
1 stop36h 10m
Tue 8-1221:45 -
1 stop28h 45m
Deal found 6-9HK$7,120
Thu 10-914:05 -
1 stop19h 35m
Tue 22-900:10 -
1 stop18h 05m
Deal found 9-9HK$7,277
Mon 26-1009:20 -
2 stops29h 22m
Tue 10-1106:00 -
2 stops24h 55m
Deal found 7-9HK$7,488
Sat 19-914:05 -
1 stop18h 55m
Fri 25-900:10 -
1 stop18h 05m
Deal found 10-9HK$7,504
Fri 25-911:20 -
1 stop20h 45m
Sat 10-1023:30 -
1 stop19h 25m
Deal found 9-9HK$7,528
Mon 14-914:05 -
1 stop19h 35m
Sun 27-900:10 -
1 stop18h 05m
Deal found 9-9HK$7,598
Fri 25-917:35 -
1 stop15h 25m
Tue 6-1000:10 -
1 stop21h 55m
Deal found 8-9HK$7,739
Fri 25-911:05 -
1 stop21h 55m
Fri 25-900:10 -
1 stop18h 05m
Deal found 7-9HK$7,747
Sat 12-914:05 -
1 stop19h 35m
Fri 18-900:10 -
1 stop18h 05m
Deal found 10-9HK$7,755
Sat 12-917:35 -
1 stop16h 05m
Fri 2-1000:10 -
1 stop18h 05m
Deal found 7-9HK$7,763

Find flight deals to Ontario

Return from

HK$4,995

One-way from

HK$3,678

Popular in

July

Cheapest in

November

Average price

HK$6,312
AIR PREMIA
  • AIR PREMIA
  • 11-11-15-11
  • 2 total stops
  • 52h 45m total
  • Hong Kong to Los Angeles
Search Deals
25-10-31-12
  • 25-10-31-12
  • 3 total stops
  • 59h 00m total
  • Hong Kong to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (HK$869 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (HK$175 potential savings vs. average return price).
Search Deals
Average for return flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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 Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Sun 20-9

14:05-18:00

1 stop18h 55m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$4,658
Fastest return journey

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Sun 27-9

17:35-18:00

1 stop15h 25m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$4,658

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Wed 23-9

14:05-18:00

1 stop18h 55m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$4,658

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Tue 22-9

20:10-18:00

1 stop36h 50m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$4,838

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Thu 24-9

11:05-18:00

1 stop21h 55m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$4,838

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Sun 22-11

17:35-17:05

1 stop15h 30m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$5,003

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Sun 22-11

19:40-20:03

2 stops40h 23m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$5,089

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Sun 1-11

15:30-16:13

2 stops39h 43m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$5,105

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Sat 9-1

21:10-17:05

1 stop35h 55m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$5,207

Hong KongOntario

HKG Hong Kong Intl - ONT Ontario

HKGONT

Hong Kong Intl

Sun 1-11

10:20-16:13

2 stops20h 53m

Ontario

Wed 31-12

00:00-16:00

Nonstop0h 00m

HK$6,210

Flights are sorted by cheapest return flights first.

Deals found on 9-9

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

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 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
844 reviews
Check prices

Food

7.8

Boarding

8.3

Comfort

8.0

Crew

8.5

Entertainment

8.0

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
China Airlines
8.3
Very Good
844 reviews
China Airlines
8.3
Very Good
844 reviews
Check prices

Food

7.8

Boarding

8.3

Comfort

8.0

Crew

8.5

Entertainment

8.0

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.

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$1,776.

  • How much is a return flight to Ontario?

    A return flight to Ontario will typically cost around HK$1,776, however they can be found for as little as HK$1,776.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Search flights to Ontario by cabin class

First Class flights to Ontario
Business Class flights to Ontario
Prem Economy Class flights to Ontario
Economy Class flights to Ontario

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.