$140 Find Cheap Flights from Canada to Ontario - Compare and Save

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Cheap Flights from Canada to Ontario

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

Recent round-trip flight deals from Canada to Ontario

Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
9:50 am - 6:31 pmYYC  Calgary-ONT Ontario
10h 41m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:44 am - 11:15 amONT  Ontario-YYC Calgary
24h 31m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl
$259Multiple Airlines
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
9:50 am - 6:31 pmYYC  Calgary-ONT Ontario
10h 41m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:44 am - 11:15 amONT  Ontario-YYC Calgary
24h 31m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl
$260Multiple Airlines
Wed, Jan 6 - Tue, Jan 12
Multiple Airlines Logo
6:00 am - 2:48 pmYVR  Vancouver Intl-ONT Ontario
9h 48m2 stops Calgary Las Vegas Harry Reid Intl
Multiple Airlines Logo
9:22 pm - 4:00 pmONT  Ontario-YVR Vancouver Intl
17h 38m1 stop Las Vegas Harry Reid Intl
$261Multiple Airlines
Thu, Jan 7 - Sun, Jan 17
United Airlines Logo
2:00 pm - 5:35 pmYVR  Vancouver Intl-ONT Ontario
4h 35m1 stop San Francisco
United Airlines Logo
6:00 am - 1:43 pmONT  Ontario-YVR Vancouver Intl
6h 43m1 stop San Francisco
$344United Airlines
Wed, Jan 6 - Wed, Jan 13
Delta Logo
8:20 am - 2:50 pmYVR  Vancouver Intl-ONT Ontario
7h 30m1 stop Seattle/Tacoma Intl
Delta Logo
3:31 pm - 11:58 pmONT  Ontario-YVR Vancouver Intl
7h 27m1 stop Seattle/Tacoma Intl
$344Delta
Wed, Jan 6 - Tue, Jan 12
Delta Logo
4:40 pm - 10:35 pmYVR  Vancouver Intl-ONT Ontario
6h 55m1 stop Seattle/Tacoma Intl
Delta Logo
3:31 pm - 11:58 pmONT  Ontario-YVR Vancouver Intl
7h 27m1 stop Seattle/Tacoma Intl
$344Delta
Sun, Jan 17 - Thu, Jan 21
United Airlines Logo
2:00 pm - 5:35 pmYVR  Vancouver Intl-ONT Ontario
4h 35m1 stop San Francisco
United Airlines Logo
7:25 am - 1:43 pmONT  Ontario-YVR Vancouver Intl
5h 18m1 stop San Francisco
$345United Airlines
Wed, Jan 6 - Sat, Jan 9
Delta Logo
8:20 am - 2:50 pmYVR  Vancouver Intl-ONT Ontario
7h 30m1 stop Seattle/Tacoma Intl
Delta Logo
6:00 am - 1:15 pmONT  Ontario-YVR Vancouver Intl
6h 15m1 stop Salt Lake City
$345Delta
Thu, Dec 10 - Sat, Dec 12
American Airlines Logo
3:45 pm - 10:53 pmYYZ  Toronto Pearson Intl-ONT Ontario
10h 08m1 stop Charlotte Douglas
American Airlines Logo
6:30 am - 10:57 pmONT  Ontario-YYZ Toronto Pearson Intl
13h 27m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
$527American Airlines
Thu, Dec 10 - Sat, Dec 12
American Airlines Logo
5:12 pm - 11:48 pmYYZ  Toronto Pearson Intl-ONT Ontario
9h 36m1 stop Dallas/Fort Worth
American Airlines Logo
6:30 am - 10:39 pmONT  Ontario-YYZ Toronto Pearson Intl
13h 09m2 stops Phoenix Sky Harbor Intl Charlotte Douglas
$527American Airlines
Booking Insights

KAYAK's insights & trends for flights to Ontario

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

What is the cheapest flight to Ontario?

In the last 5 days, the cheapest flight deal to Ontario was found on the route from Vancouver, at $260 return. The most popular connection is from Toronto to Ontario and KAYAK users have found round-trip deals for as low as $333 in the last 5 days.

What is the cheapest month to fly to Ontario?

The cheapest month for flights to Ontario is October, where tickets cost $410 on average for return flights. On the other hand, the most expensive months are January and December, where the average cost of tickets from Canada is $751 and $660 respectively. For one-way flights, the best month to travel is April with an average price of $241.

Good to know

Low season

February

Cheapest flight

$140
Best time to beat the crowds but there is an average 35% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Vancouver to Ontario

FAQs - booking Ontario flights

  • What is the cheapest flight to Ontario?

    In the last 5 days, the cheapest flight deal to Ontario was found on the route from Vancouver, at $260 return. The most popular connection is from Toronto to Ontario and KAYAK users have found round-trip deals for as low as $333 in the last 5 days.

  • How far is Ontario Airport from central Ontario?

    Central Ontario is 3 miles away from Ontario Airport.

  • What is the name of Ontario’s airport?

    There is only 1 airport in Ontario, called Ontario Airport (ONT). It can also be referred to as Ontario or Ontario Intl.

  • 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 travelers 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.

  • How many direct flights to Ontario are there each week?

    Each week there are around 979 direct flights from within Canada to Ontario. The most common day for departures is Sunday, with 19% of flights taking off on this day.

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 3 airlines serving from Canada to Ontario

 
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.
7.8
DeltaOverall score based on 8719 reviews
8.1Boarding
7.8Entertainment
7.8Comfort
8.5Crew
7.2Food
Airline reviews

The bathroom is disgustingly dirty. It looks like the crew members didn’t clean it on a regular basis. Also, who made the bathroom so small?. I am not a big girl but I still feel very cramped inside. Def unpleasant experience to use the bathroom.

4.0 OkaySue, Nov 2026
Read more Delta reviews

The bathroom is disgustingly dirty. It looks like the crew members didn’t clean it on a regular basis. Also, who made the bathroom so small?. I am not a big girl but I still feel very cramped inside. Def unpleasant experience to use the bathroom.

dropped my bags at Seattle Delta curbside. 1.5 hours before departure. one bag oversized made it. the other was left at curb and mishandled. poor communication from delta in sjc baggage claim. No internet on flight and food choices in business are horrible. You are forcing us to fly Alaska which is shockingly better than the Delta experience. that is a low bar.

attendents were rude and the boarding was disjointed and poor

There was an incredibly surly flight attendant that ruined the experience

After boarding the plane had to wait an hour at the for the copilot to show up before we could depart

The cabin and bathroom experience was poor as the cabin and bathroom were dirty and showed signs of an older plane that had not been updated for Customer’s, comfort and health. There was gum on my seat when I arrived and dirt spots around the fan and light controls. The flight was almost entirely full, so there was no way I could be moved from my seat. Th bathroom had the peeling paint.

Great crew. Comfortable seating. Nice overhead bin space. My app didn't allow me to check in for my flight to BOS. When I called Support, they didn't fix it, but just told me to check in at the airport. Seat back entertainment was great. Could be better if the audio could connect to Bluetooth.

I'm 6' 2" and even in economy plenty of leg room

great! appreciated the last minute upgrade to Comfort+ exit row, as well

My seat was changed without my consent. It wasn’t a major deal but annoying.

The flight was excellent. Their was no service as we boarded, the flight attendants spent about 30 minutes just taking and not really caring that the cabin was about 80 degrees and did not offered any beverage to first class passengers or any passenger. The flight from DEN to ONT is not long but not under an hour, we received one drink and bag of chips if you were lucky. I was in first class…. I did leave my hat on the plane and it only took less than five minutes for a United rep to locate and bring it to me.

We boarded the plane and were about to take off when we were notified that the tires had to be checked. Upon inspection, they were found to need replacement, so the entire plane had to be deboarded. After we exited the plane, United staff forced us to stay in the gate area by posting "Do Not Exit" signs on the doors connecting the gate area to the terminal. Many of us had already rebooked our flights and had no checked bags, but they told us we could not leave. This seemed inappropriate to hold people under false pretenses. When the agent told us we could leave, I asked them to please take down the "Do Not Exit" signs, as they were misleading. The agent refused, and I told them that it didn't feel right to hold people like that.

Friendly crew, but we were delayed for more than an hour and had to change planes due to maintenance issues.

Flight attendants had a little attitude. Food tastes no good.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

Airbus plane, nice and polite staff, entertainment even as it was a short flight.

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Friendly crew and pilot. And thank you to the pilot for his smooth landing technique where the wheels don't hit the ground hard - that should be table stakes but doesn't seem to be the case nowadays.

Check-in was easy, but getting luggage checked in wasn't so smooth, due to the machines not working correctly. Boarding went smooth and flight was relatively fast. Captain kept us well informed of our early arrival into LA, which really helped us coordinate with the person picking us up.

Seats are getting smaller and smaller. In flight movies are poor compared to other airlines. Food is mediocre.

My flight left Honolulu EIGHT hours late due to lack of flight crew. This was the second time in 2026. The first class staff were excellent ... personable and friendly. The food was okay ...

The plane was late getting to Ontario by half an hour which makes it inconvenient when you have people waiting for you.

I got bumped by Qantas to American Airlines incurring a 6 hr layover at lax. I was not happy

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

It was fine. I didn't love the food but it was at least a real attempt at serving a meal, unlike my earlier flight from Nashville to Dallas.

More options for your flight to Ontario