ONT

$630 Find Cheap Flights to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 12/2. 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.
1 adult

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
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Cheap Flight Deals to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals to Ontario

Recommended return deals departing in the coming months from the most popular airlines that fly to Ontario.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
21:40 - 21:50SYD-ONT
19h 10m1 stop
08:50 - 19:45ONT-SYD
40h 55m1 stop
$1,188Hawaiian Airlines
Find Deal
Fri, 7 Mar - Tue, 11 Mar
21:40 - 21:50SYD-ONT
19h 10m1 stop
08:50 - 19:45ONT-SYD
40h 55m1 stop
$1,231Hawaiian Airlines
Find Deal
Fri, 7 Mar - Tue, 11 Mar
10:45 - 11:05BNE-ONT
17h 20m1 stop
18:39 - 06:30ONT-BNE
18h 51m1 stop
$1,239United Airlines
Find Deal
Mon, 31 Mar - Thu, 24 Apr
10:45 - 20:21BNE-ONT
26h 36m1 stop
13:20 - 06:30ONT-BNE
24h 10m1 stop
$1,240United Airlines
Find Deal
Mon, 31 Mar - Sun, 13 Apr
11:40 - 18:04BNE-ONT
24h 24m1 stop
06:00 - 06:30ONT-BNE
31h 30m1 stop
$1,248United Airlines
Find Deal
Fri, 7 Mar - Fri, 21 Mar
11:40 - 20:57BNE-ONT
27h 17m2 stops
18:45 - 06:30ONT-BNE
18h 45m1 stop
$1,250United Airlines
Find Deal
Sat, 8 Mar - Sat, 15 Mar
17:25 - 21:50SYD-ONT
23h 25m1 stop
14:43 - 19:45ONT-SYD
35h 02m2 stops
$1,331
Find Deal
Fri, 7 Mar - Tue, 11 Mar
11:05 - 23:51SYD-ONT
31h 46m2 stops
06:00 - 07:45ONT-SYD
31h 45m2 stops
$1,368Delta
Find Deal
Fri, 7 Mar - Tue, 11 Mar
12:10 - 18:04SYD-ONT
23h 54m1 stop
18:39 - 07:55ONT-SYD
19h 16m1 stop
$1,404Lufthansa
Find Deal
Sun, 23 Mar - Sun, 30 Mar
19:15 - 21:50SYD-ONT
45h 35m2 stops
08:50 - 19:45ONT-SYD
40h 55m1 stop
$1,726
Find Deal
Wed, 19 Feb - Thu, 13 Mar

Flights to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to Ontario?

The average price of all round-trip flights to Ontario clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Ontario is Monday where round-trip tickets can be as cheap as $1,471. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are $2,448 on average.

What is the cheapest time of day to fly to Ontario?

The average price for all round-trip flights to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Ontario is generally at night, when round-trip flights cost $1,721 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,750.

Good to know

Low season

November

High season

March
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly and prices are also 23% lower on average.

When to book flights to Ontario

Are your dates flexible? Find out the best times to travel to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Ontario based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Ontario flights

  • How far is Ontario Airport from central Ontario?

    The distance between Ontario Airport and the city centre of Ontario is 5 km.

  • What is the name of Ontario’s airport?

    Ontario is served by Ontario Airport, also commonly referred to as Ontario or Ontario Intl. The airport code is ONT.

  • How does KAYAK find such low prices on flights to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Ontario

  • High season is considered to be January, February and March. The cheapest month to fly from Australia is September.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Top airline flying to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Australia to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8882 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
8.1Crew
6.7Food
Airline reviews

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

8.0 ExcellentAnonymous, Feb 2025HNL - SFO
Read more United Airlines reviews

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Beijing PEK to SFO. I had an economy seat on this flight. The seat comfort was acceptable. My main complaint is with the FA’s lack of personality and absence from servicing the plane, specifically restroom care (I wish I could share a pic of the restroom that I captured) and care of travelers—drink cart/availability of drinks. I'm amazed at the level of service on other International travel where a passenger is most often appreciated.

Great. Food going from Australia to the US was better than other way around, but still needs improvement in terms of quality and quantity!!!

I feel bad, but Swiss airlines is not an airlines I will ever fly again. Their cabins are basic, seats are extremely uncomfortable, crew is a hit or a miss with service. What's worse is how they make you feel they are there to make money and not make your travel needs be met or make your travel a pleasure. They charge for 2nd bags, seat selection and felt like a budget arinines frontier/spirit airline attitude and approach. Their business class is from the early 2000s, basic. Additionally, planes going to India, are old, falling apart and not maintained. Even the crew mentioned this is typical of the airline having older planes going to India. Panels detached and loose or stuck with duct tape, seats scruffed up and dirty, seatbelts roughed up. The scariest thing was when I saw a window panel next to where I was sitting loose and dangling. The crew mentioned it's only cosmetic and assured the integrity of the plane was inspected by the maintenance crew. This is where they confessed about planes going to India being old. I UNFORTUNATELY would NOT recommend Swiss airlines to anyone and will NEVER fly with them again!

The ANA crew and their members were all extremely nice and caring. Shout out to the crews for working on Christmas and New Years. Y'all the real MVP

Awful. Worst airline I have ever been on. Crew were among the rudest people I have ever dealt with. United staff members were rude and disrespectful. My flight was delayed, causing me to miss a connecting flight. I understand things happen, but when staff start lying about what actually happened, that is when I have an issue. Just be honest, really it isn’t that hard. I’m being very honest with this review and I don’t find this difficult what so ever. In fact, because of United Airlines, my Christmas holiday was off to a really rocky start. As someone who has traveled across the world, it has only been United that I have had a truly awful experience.

Boarding always seems a bit chaotic. Seat spacing could leave more for leg room.

Good flight. On time. Boarding and seating was easy. Crew were really friendly, yet professional. Bathroom (by cockpit) was small but serviceable. Some the seats were showing some notable wear & tear, but were comfy. Very happy UA customer. TY! 🤛🏽💗

We arrived early and finally made it to our gate almost an hour after.

Book Cheap Ontario Plane Tickets

Recent return flight deals

 
These are the cheapest return flights to Ontario found on KAYAK in the last 72 hours.
7/3Fri
1 stopHawaiian Airlines
19h 10mSYD-ONT
11/3Tue
1 stopHawaiian Airlines
40h 55mONT-SYD
$1,188
7/3Fri
1 stopHawaiian Airlines
19h 10mSYD-ONT
11/3Tue
1 stopHawaiian Airlines
40h 55mONT-SYD
$1,231
31/3Mon
1 stopUnited Airlines
17h 20mBNE-ONT
24/4Thu
1 stopUnited Airlines
18h 51mONT-BNE
$1,239
31/3Mon
1 stopUnited Airlines
26h 36mBNE-ONT
13/4Sun
1 stopUnited Airlines
24h 10mONT-BNE
$1,240
7/3Fri
1 stopUnited Airlines
24h 24mBNE-ONT
21/3Fri
1 stopUnited Airlines
31h 30mONT-BNE
$1,248
8/3Sat
2 stopsUnited Airlines
27h 17mBNE-ONT
15/3Sat
1 stopUnited Airlines
18h 45mONT-BNE
$1,250
7/3Fri
1 stop
23h 25mSYD-ONT
11/3Tue
2 stops
35h 02mONT-SYD
$1,331
7/3Fri
2 stopsDelta
31h 46mSYD-ONT
11/3Tue
2 stopsDelta
31h 45mONT-SYD
$1,368
23/3Sun
1 stopLufthansa
23h 54mSYD-ONT
30/3Sun
1 stopLufthansa
19h 16mONT-SYD
$1,404
19/2Wed
2 stops
45h 35mSYD-ONT
13/3Thu
1 stop
40h 55mONT-SYD
$1,726

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Ontario found on KAYAK in the last 72 hours.
12/2Wed
1 stop
24h 00mMEL-ONT
$630
12/2Wed
1 stop
24h 00mMEL-ONT
$642
30/4Wed
1 stop
23h 05mMEL-ONT
$662
9/3Sun
2 stops
32h 55mSYD-ONT
$736
7/3Fri
1 stopHawaiian Airlines
19h 10mSYD-ONT
$746
19/3Wed
1 stopUnited Airlines
16h 14mBNE-ONT
$757
14/3Fri
1 stopUnited Airlines
29h 05mBNE-ONT
$759
25/5Sun
2 stopsDelta
23h 54mSYD-ONT
$786
9/3Sun
1 stopHawaiian Airlines
17h 15mSYD-ONT
$810
26/2Wed
1 stopLufthansa
29h 09mSYD-ONT
$816

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Last minute flights to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Ontario that are departing in the next 10 days.
8/2Sat
multi-stopUnited Airlines
28h 17mBNE-ONT
19/2Wed
multi-stopUnited Airlines
22h 00mONT-BNE
$1,272
9/2Sun
multi-stopUnited Airlines
16h 11mBNE-ONT
16/3Sun
multi-stopUnited Airlines
26h 52mONT-BNE
$1,283
10/2Mon
multi-stopLufthansa
16h 41mSYD-ONT
23/2Sun
multi-stopLufthansa
18h 35mONT-SYD
$1,349
10/2Mon
multi-stopLufthansa
16h 41mSYD-ONT
23/2Sun
multi-stopLufthansa
18h 35mONT-SYD
$1,372
10/2Mon
multi-stopChina Airlines
37h 40mSYD-ONT
23/2Sun
multi-stopChina Airlines
42h 25mONT-SYD
$2,042
10/2Mon
multi-stopChina Airlines
37h 40mSYD-ONT
23/2Sun
multi-stopChina Airlines
42h 25mONT-SYD
$2,045
10/2Mon
multi-stop
37h 40mSYD-ONT
23/2Sun
multi-stop
34h 50mONT-SYD
$2,367
10/2Mon
multi-stop
37h 40mSYD-ONT
23/2Sun
multi-stop
34h 50mONT-SYD
$2,405
9/2Sun
multi-stopQatar Airways
38h 42mBNE-ONT
16/3Sun
multi-stopQatar Airways
36h 33mONT-BNE
$4,264
10/2Mon
multi-stopQatar Airways
38h 42mBNE-ONT
14/2Fri
multi-stopQatar Airways
36h 39mONT-BNE
$4,795

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Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

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