Find flights
Deals
Airlines

HK$408+ Cheap flights from Ontario

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9-7. 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.
ONT — HKG
14 Jun — 21 Jun1
1 adult

What to know about flights from Ontario

Discover essential information about flights departing from Ontario, including flight schedules, destinations, airlines operating at the Ontario airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 9 June 2025.

Cheapest round-trip flight

HK$368

Cheapest airline

Delta

Good one-way deal

HK$357 or less
The cheapest round-trip flight from Ontario is currently to San Jose.
Search Deals
On average, Delta currently has the cheapest one-way flight from Ontario (avg. price of HK$1,404).
Search Deals
Price to beat on a one-way flight from Ontario.
Search Deals

Find flights from Ontario

Cheapest flights from Ontario
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 9 June 2025.

Fri 15-811:50ONT - TPA
1 stop9h 20mSouthwest
Sat 23-817:20TPA - ONT
1 stop6h 20mSouthwest
Deal found 7-6HK$1,844
Tue 30-915:04ONT - JFK
1 stop13h 02mAlaska Airlines
Fri 17-1017:29JFK - ONT
1 stop9h 20mAlaska Airlines
Deal found 7-6HK$1,977
Fri 26-918:37ONT - EWR
1 stop8h 03mUnited Airlines
Mon 29-907:00EWR - ONT
1 stop8h 13mUnited Airlines
Deal found 8-6HK$1,985
Wed 3-906:00ONT - TPA
1 stop11h 30mDelta
Wed 10-915:05TPA - ONT
1 stop7h 06mDelta
Deal found 7-6HK$2,017
Tue 9-922:56ONT - JFK
Nonstop5h 22mJetBlue
Wed 17-918:35JFK - ONT
Nonstop5h 54mJetBlue
Deal found 8-6HK$2,017
Tue 9-907:10ONT - EWR
1 stop8h 49mAlaska Airlines
Wed 17-907:19EWR - ONT
1 stop9h 50mAlaska Airlines
Deal found 8-6HK$2,174
Tue 21-1022:59ONT - EWR
2 stops10h 07mDelta
Wed 29-1006:00EWR - ONT
1 stop8h 24mDelta
Deal found 9-6HK$2,213
Wed 17-915:04ONT - TPA
1 stop12h 11mAlaska Airlines
Wed 24-919:06TPA - ONT
2 stops17h 20mAlaska Airlines
Deal found 6-6HK$2,511
Tue 21-1007:02ONT - TPA
1 stop9h 41mUnited Airlines
Tue 28-1016:45TPA - ONT
1 stop9h 00mUnited Airlines
Deal found 7-6HK$2,801
Sun 7-923:59ONT - EWR
1 stop8h 37mAmerican Airlines
Thu 11-917:40EWR - ONT
2 stops9h 37mAmerican Airlines
Deal found 8-6HK$3,154
Fri 5-1206:45ONT - JFK
1 stop10h 09mDelta
Mon 8-1212:25JFK - ONT
1 stop10h 17mDelta
Deal found 8-6HK$3,201
Wed 2-723:59ONT - TPA
1 stop10h 46mJetBlue
Fri 18-714:39TPA - ONT
1 stop10h 20mJetBlue
Deal found 8-6HK$3,602

Find flights from Ontario within your budget

Find flights departing from Ontario that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 9 June 2025. In the last 7 days, Cheapflights users made a total of 70,647 searches

Fly to

Hong Kong

Route

Departure

Return

Price

OntarioTampa

ONT - TPA

ONTTPA

Ontario

Fri 15-8

11:50-00:10

1 stop9h 20m

Tampa

Sat 23-8

17:20-20:40

1 stop6h 20m

HK$1,844

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 30-9

15:04-07:06

1 stop13h 02m

New York John F Kennedy Intl

Fri 17-10

17:29-23:49

1 stop9h 20m

HK$1,977

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Fri 26-9

18:37-05:40

1 stop8h 03m

Newark

Mon 29-9

07:00-12:13

1 stop8h 13m

HK$1,985

OntarioTampa

ONT - TPA

ONTTPA

Ontario

Wed 3-9

06:00-20:30

1 stop11h 30m

Tampa

Wed 10-9

15:05-19:11

1 stop7h 06m

HK$2,017

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 9-9

22:56-07:18

Nonstop5h 22m

New York John F Kennedy Intl

Wed 17-9

18:35-21:29

Nonstop5h 54m

HK$2,017

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Tue 9-9

07:10-18:59

1 stop8h 49m

Newark

Wed 17-9

07:19-14:09

1 stop9h 50m

HK$2,174

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Tue 21-10

22:59-12:06

2 stops10h 07m

Newark

Wed 29-10

06:00-11:24

1 stop8h 24m

HK$2,213

OntarioTampa

ONT - TPA

ONTTPA

Ontario

Wed 17-9

15:04-06:15

1 stop12h 11m

Tampa

Wed 24-9

19:06-09:26

2 stops17h 20m

HK$2,511

OntarioTampa

ONT - TPA

ONTTPA

Ontario

Tue 21-10

07:02-19:43

1 stop9h 41m

Tampa

Tue 28-10

16:45-22:45

1 stop9h 00m

HK$2,801

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sun 7-9

23:59-11:36

1 stop8h 37m

Newark

Thu 11-9

17:40-00:17

2 stops9h 37m

HK$3,154

Flights are sorted by cheapest return flights first.

Deals found on 7-6

Showing 1-10 of 53 results
1
2
3
...
6

Best time to book a flight from Ontario

Have a flexible travel schedule? Discover the best time to fly from 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.

Travel insights for flights from Ontario

Get recent, data-driven insights about flights from Ontario including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Ontario?

Use this chart to determine the optimal time to book a return flight from Ontario to Hong Kong. Price data was last updated on 23 May 2025.

The price you pay for your flight from Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Ontario?

Currently, August is the cheapest month in which you can book a flight from Ontario (average of HK$4,276). Flying from Ontario in June will prove the most costly (average of HK$7,509). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Ontario?

Only one airline operates round-trip flights from Ontario: China Airlines. This airline flies to the following popular destinations: Hong Kong.

China Airlines
China Airlines
From HK$909

What are popular destinations to fly to from Ontario?

If you’re flying from Ontario, these routes are more frequently taken by airlines Dallas (137 flights per day), Seattle (128 flights per day) and Atlanta (76 flights per day).

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From HK$46

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Las Vegas Harry Reid Intl, with prices starting at HK$357. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From HK$46

Airline reviews for flights from Ontario

Get insights into the airlines that provide service from Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Ontario. In the last 7 days, Cheapflights users made a total of 70,647 searches.
星宇航空
9.1
Wonderful
Check prices

Entertainment

8.9

Comfort

9.0

Boarding

9.0

Crew

9.3

Food

8.8

Overall

9.1

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
星宇航空
9.1
Wonderful
星宇航空
9.1
Wonderful
Check prices

Entertainment

8.9

Comfort

9.0

Boarding

9.0

Crew

9.3

Food

8.8

Overall

9.1

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very Good
1,200 reviews
星宇航空
9.1
Wonderful
Check prices

Entertainment

8.9

Comfort

9.0

Boarding

9.0

Crew

9.3

Food

8.8

Overall

9.1

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very Good
1,087 reviews
星宇航空
9.1
Wonderful
Check prices

Entertainment

8.9

Comfort

9.0

Boarding

9.0

Crew

9.3

Food

8.8

Overall

9.1

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very Good
1,489 reviews
星宇航空
9.1
Wonderful
Check prices

Entertainment

8.9

Comfort

9.0

Boarding

9.0

Crew

9.3

Food

8.8

Overall

9.1

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very Good
738 reviews
星宇航空
9.1
Wonderful
Check prices

Entertainment

8.9

Comfort

9.0

Boarding

9.0

Crew

9.3

Food

8.8

Overall

9.1

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Direct flights from California

Book a direct flight from one of these other cities located in California.
Direct flights from Los Angeles
Direct flights from San Francisco
Direct flights from San Diego
Direct flights from San Jose

Related info for your journey

Access useful and relevant information related to your journey from Ontario. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 9 June 2025.

  • What are the most popular destinations to fly to from Ontario?

    This month, the top selected destinations from Ontario are Denver, Dallas/Fort Worth Airport, Guadalajara. Throughout the year, Dallas/Fort Worth Airport, Denver, Guadalajara are some of the top choices made by users flying from Ontario.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as HK$357 to Las Vegas (prices may vary depending on the airline and departure time). On average, users have booked flights for HK$357 to fly from Ontario.

  • What is the cheapest month to fly from Ontario?

    Currently, the cheapest month for flights from Ontario is August. The most expensive month for flights is June. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • Where are the cheapest places to fly to from Ontario?

    Check out the cheapest flights from Ontario to embark to:
    Fly from Ontario to Hong Kong from HK$6,874 round trip

  • How does Cheapflights help users find flights from Ontario?

    Deals for flights from Ontario 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 from Ontario?

    Millions of users choose and trust Cheapflights to book the best flight deals from Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

  • Can Cheapflights find flights from Ontario with no change fees?

    Yes! Cheapflights helps users easily find flights from Ontario with no change fees.

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

    Not ready to book yet? You can track prices for flights from Ontario on Cheapflights with our Price Alerts feature and get notified when better prices are available.

See more FAQs

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario?

Deals for flights from Ontario 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 from Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario with no change fees.

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

Not ready to book yet? You can track prices for flights from Ontario on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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.
Site
©2025 Cheapflights