ONT

$858 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 28/7. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches 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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Everything you should know

Cheapest return fare
$1,431
United Airlines
Tue 19/5Mon 25/5
MEL - ONT • 1 stop
Cheapest one-way flight
$858
United Airlines
Tue 28/7
MEL - ONT • 2 stops
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Ontario

Tue, 19 May - Mon, 25 May
United Airlines Logo
10:55 - 17:52
MEL
-
ONT
23h 57m
1 stop
United Airlines Logo
18:30 - 08:15
ONT
-
MEL
44h 45m
2 stops
$1,431United Airlines
Tue, 2 Jun - Tue, 9 Jun
United Airlines Logo
10:55 - 12:12
MEL
-
ONT
18h 17m
1 stop
United Airlines Logo
18:39 - 08:15
ONT
-
MEL
20h 36m
1 stop
$1,433United Airlines
Tue, 12 May - Tue, 19 May
Delta Logo
09:15 - 12:19
SYD
-
ONT
20h 04m
2 stops
Delta Logo
06:00 - 06:50
ONT
-
SYD
31h 50m
2 stops
$1,439Delta
Fri, 1 May - Fri, 15 May
United Airlines Logo
10:55 - 12:22
MEL
-
ONT
18h 27m
1 stop
United Airlines Logo
18:59 - 08:15
ONT
-
MEL
20h 16m
1 stop
$1,439United Airlines
Mon, 3 Aug - Thu, 13 Aug
United Airlines Logo
10:55 - 12:12
MEL
-
ONT
18h 17m
1 stop
United Airlines Logo
19:13 - 08:15
ONT
-
MEL
20h 02m
1 stop
$1,440United Airlines
Fri, 24 Apr - Fri, 8 May
Lufthansa Logo
10:55 - 22:45
MEL
-
ONT
28h 50m
1 stop
Lufthansa Logo
13:30 - 08:15
ONT
-
MEL
25h 45m
1 stop
$1,514Lufthansa
Thu, 7 May - Thu, 28 May
Multiple Airlines Logo
22:15 - 09:45
BNE
-
ONT
52h 30m
2 stops
Multiple Airlines Logo
19:41 - 20:00
ONT
-
BNE
31h 19m
2 stops
$1,888Multiple Airlines
Tue, 1 Sep - Wed, 28 Oct
China Airlines Logo
22:50 - 18:40
BNE
-
ONT
36h 50m
1 stop
China Airlines Logo
23:50 - 10:45
ONT
-
BNE
41h 55m
1 stop
$1,898China Airlines
Fri, 4 Sep - Fri, 18 Sep
Multiple Airlines Logo
12:40 - 21:28
BNE
-
ONT
25h 48m
2 stops
Multiple Airlines Logo
08:00 - 23:25
ONT
-
BNE
22h 25m
2 stops
$1,913Multiple Airlines
Thu, 21 May - Tue, 2 Jun
China Airlines Logo
22:50 - 18:00
BNE
-
ONT
36h 10m
1 stop
China Airlines Logo
00:10 - 10:35
ONT
-
BNE
41h 25m
1 stop
$1,945China Airlines
Booking Insights

KAYAK's insights & trends for flights to Ontario

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 are the most popular airlines flying to Ontario?

The most popular airline among KAYAK users flying to Ontario is Qantas Airways, followed by Fiji Airways and Air New Zealand.

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.

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Reviews of the 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 9514 reviews
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

10.0 ExcellentBryan, Mar 2026
DEN - SFO
Read more United Airlines reviews

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

we did a return flight from Paris CDG to SFO. This trip was much better than the departing flight SFO to CDG. The food was better quality, the crew was nicer, and the interior of the plane seemed cleaner.

Horrible service no Wi-Fi connection on both leg of the flight and they are refusing to fix bad service

We got to get extended leg room in Econ plus that was great. It was nice having our own dietary needs met with our meals, and the connecting flights had it as well. Only negative were the seats my bottom was/is really sore after a ten plus hour flight. Those seats are horrible, understandable for as many people use them. So we are going to purchase a gel seat pad.

Flight to Japan was was better across the board than the return to USA. Entertainment: Movie selection was old and not to my liking. Way too many woke choices. Not enough selections for sports or drama. Service: some of the crew were great. Not all. I paid for business class. a premium. Some of the crew thought they 'had' t do there job instead of wanting to serve and be polite. Food: Way to Japan was good. Way back to USA bad. Boarding: Wat out did not offer Business only; had to go thru general. If you pay for business, you should get business perks. Suggest you look for other than United for travel to Asia

I will never fly ANA again. They lost one of my large pieces of checked luggage, the heaviest one with the most valuable items in it, and they said they will not send me an email unless they can't find it, even though the paper they gave me to track the status of my lost luggage requires a code from an email they are supposed to send me so I can do baggage tracing. They claim to be an international airline, but they also insist on calling a Japanese telephone number to confirm where to send the lost baggage if they find it. It is impossible to find an actual contact email address for customer support on their website, and their AI chatbot is unhelpful, directing you to a webpage that says it is for contact information but does not have any actual email addresses or phone numbers listed on it. My seat in economy did not recline at all, even though I was not sitting in an exit row nor the very back row. I had to sit in the fully upright position for over ten hours of international travel. Awful experience overall.

The head flight attendant made the trip excellent. He was very accommodating.

The economy seats on the 777 was not as cramped as I had feared, but the food was terrible.

Terrible experience! delay 2 time and say i dont have ticket

It was amazing. I had several upgraded seats on my flight out. Everything went smooth with no delays.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario