$155 Find Cheap Flights from Canada to Ontario - Compare and Save

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 7/24. 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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Booking Insights
Flight Deals

Cheap Flights from Canada to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Canada 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 round-trip flight deals from Canada to Ontario

Thu, Jul 9 - Wed, Jul 15
Lufthansa Logo
7:00 am - 12:12 pm
YVR
-
ONT
5h 12m
1 stop
Lufthansa Logo
1:50 pm - 11:22 pm
ONT
-
YVR
9h 32m
1 stop
$283Lufthansa
Fri, Sep 18 - Mon, Sep 21
United Airlines Logo
7:00 am - 12:12 pm
YVR
-
ONT
5h 12m
1 stop
United Airlines Logo
9:01 am - 11:22 pm
ONT
-
YVR
14h 21m
1 stop
$287United Airlines
Tue, Jul 7 - Sun, Jul 12
Delta Logo
7:19 am - 5:21 pm
YVR
-
ONT
10h 02m
1 stop
Delta Logo
1:00 pm - 10:28 pm
ONT
-
YVR
9h 28m
1 stop
$303Delta
Thu, Jul 2 - Tue, Jul 7
Delta Logo
5:20 pm - 10:41 pm
YVR
-
ONT
5h 21m
1 stop
Delta Logo
6:01 pm - 10:58 pm
ONT
-
YVR
4h 57m
1 stop
$319Delta
Thu, Jul 9 - Wed, Jul 15
WestJet Logo
5:00 am - 5:21 pm
YVR
-
ONT
12h 21m
2 stops
WestJet Logo
6:20 am - 11:45 am
ONT
-
YVR
29h 25m
2 stops
$331WestJet
Sat, Jul 18 - Sat, Jul 25
Multiple Airlines Logo
7:00 am - 3:14 pm
YYZ
-
ONT
11h 14m
1 stop
Multiple Airlines Logo
11:52 am - 5:45 am
ONT
-
YYZ
14h 53m
2 stops
$375Multiple Airlines
Tue, Jul 21 - Tue, Jul 28
Multiple Airlines Logo
10:50 am - 8:03 am
YYZ
-
ONT
24h 13m
2 stops
Multiple Airlines Logo
1:38 pm - 6:39 am
ONT
-
YYZ
14h 01m
1 stop
$376Multiple Airlines
Fri, Aug 14 - Tue, Aug 18
WestJet Logo
8:45 am - 10:45 pm
YYC
-
ONT
15h 00m
1 stop
WestJet Logo
6:20 am - 1:10 pm
ONT
-
YYC
5h 50m
1 stop
$385WestJet
Fri, Aug 7 - Tue, Aug 11
Alaska Airlines Logo
6:00 pm - 11:11 pm
YEG
-
ONT
6h 11m
1 stop
Alaska Airlines Logo
12:04 pm - 11:07 am
ONT
-
YEG
22h 03m
1 stop
$400Alaska Airlines
Fri, Aug 7 - Tue, Aug 11
Alaska Airlines Logo
6:00 pm - 9:56 am
YEG
-
ONT
16h 56m
2 stops
Alaska Airlines Logo
5:26 pm - 11:07 am
ONT
-
YEG
16h 41m
1 stop
$404Alaska 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 month to fly to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Ontario is July, where tickets cost $96 on average for return flights. On the other hand, the most expensive months are March and May, where the average cost of tickets from Canada is $405 and $323 respectively. For one-way flights, the best month to travel is April with an average price of $86.

Good to know

Low seasonFebruary
Cheapest flight$155
Best time to beat the crowds but there is an average 48% increase in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Vancouver to Ontario

FAQs - booking Ontario flights

  • 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 1,046 direct flights from within Canada to Ontario. The most common day for departures is Sunday, with 16% 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 airlines flying from Canada 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 Canada 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.
7.9
DeltaOverall score based on 8396 reviews
7.2Food
7.8Comfort
8.1Boarding
8.5Crew
7.8Entertainment
Airline reviews

Flight delayed four separate times. I’m now one hour hours late to landing.

2.0 MediocreTravis, Jun 2026
SFO - LAX
Read more Delta reviews

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

Service was professional and quick. Premium economy seat was comfortable given the class

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Crew was great! Good meals. Had room to stretch out

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

Uncomfortable plastic seats even in premium economy. No free wifi. Even paid wifi was spotty to nonexistent. Bad food. Much worse than economy on foreign carriers like Qantas.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario