C$ 197 Find Cheap Flights from San Jose 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 from San Jose to Ontario departing on 2/9. 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

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 in flight searches from San Jose to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Jose to Ontario, as well as popular online travel agencies
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Best Ontario Flight Deals from San Jose

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Ottawa
Ottawa2 stopsC$ 567
London
London2 stopsC$ 1,157
Ottawa
Ottawa2 stopsC$ 567
London
London2 stopsC$ 1,157

Cheap Flights from San Jose to Ontario

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

Wed, 10 Sep - Wed, 24 Sep
Logo
6:35 a.m. - 7:58 p.m.SJC-YYZ
10h 23m1 stop
Logo
9:30 a.m. - 8:00 p.m.YYZ-SJC
13h 30m1 stop
C$ 389
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Wed, 3 Sep - Wed, 17 Sep
Logo
4:41 p.m. - 7:45 p.m.SJC-YYZ
24h 04m1 stop
Logo
9:45 a.m. - 8:00 p.m.YYZ-SJC
13h 15m1 stop
C$ 390
Find Deal
Wed, 17 Sep - Wed, 24 Sep
Logo
6:35 a.m. - 7:58 p.m.SJC-YYZ
10h 23m1 stop
Logo
9:30 a.m. - 8:00 p.m.YYZ-SJC
13h 30m1 stop
C$ 396
Find Deal
Mon, 27 Oct - Fri, 31 Oct
Delta Logo
10:25 p.m. - 4:06 p.m.SJC-YUL
14h 41m2 stops
Delta Logo
9:28 a.m. - 10:17 p.m.YUL-SJC
15h 49m2 stops
C$ 757Delta
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Mon, 15 Dec - Tue, 6 Jan
Delta Logo
5:45 a.m. - 11:34 p.m.SJC-YUL
14h 49m2 stops
Delta Logo
3:00 p.m. - 12:43 p.m.YUL-SJC
24h 43m2 stops
C$ 775Delta
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Thu, 23 Oct - Mon, 27 Oct
United Airlines Logo
6:30 a.m. - 1:54 p.m.SJC-YUL
28h 24m1 stop
United Airlines Logo
7:00 p.m. - 6:48 p.m.YUL-SJC
26h 48m2 stops
C$ 1,033United Airlines
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Thu, 23 Oct - Mon, 27 Oct
United Airlines Logo
6:30 a.m. - 10:40 a.m.SJC-YUL
25h 10m1 stop
United Airlines Logo
5:45 p.m. - 6:48 p.m.YUL-SJC
28h 03m1 stop
C$ 1,064United Airlines
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Mon, 1 Sep - Mon, 15 Sep
WestJet Logo
7:23 a.m. - 12:40 a.m.SJC-YHM
14h 17m2 stops
WestJet Logo
6:00 a.m. - 10:55 p.m.YHM-SJC
19h 55m3 stops
C$ 1,092WestJet
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Mon, 1 Sep - Mon, 15 Sep
WestJet Logo
7:23 a.m. - 12:40 a.m.SJC-YHM
14h 17m2 stops
WestJet Logo
6:00 a.m. - 2:45 p.m.YHM-SJC
35h 45m2 stops
C$ 1,097WestJet
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Thu, 14 Aug - Tue, 26 Aug
Air Canada Logo
7:00 a.m. - 8:19 a.m.SJC-YOW
22h 19m2 stops
Air Canada Logo
9:55 p.m. - 5:17 p.m.YOW-SJC
22h 22m2 stops
C$ 1,343Air Canada
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Booking Insights

KAYAK's insights & trends for San Jose to Ontario flights

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

How much is a round-trip flight from San Jose to Region of Ontario?

What is the cheapest month to fly from San Jose to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Jose 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 from San Jose to Ontario is May, when tickets cost C$ 528 (return) on average. On the other hand, the most expensive months are December and August, when the average cost of round-trip tickets is C$ 866 and C$ 790 respectively.

What’s the cheapest day of the week to fly from San Jose to Ontario?

The average price of all round-trip flights from San Jose to Ontario clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Ontario on a Wednesday and more expensive on a Sunday. On your return trip to San Jose, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

How far in advance should I book a flight from San Jose to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Jose to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from San Jose to Ontario, you should book around 2 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

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Good to know

Low seasonFebruary
Cheapest flightC$ 197
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly (20% more expensive on average)
Flight from San Jose to Toronto

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from San Jose 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 from San Jose to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Jose 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 from San Jose 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 from San Jose 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 from San Jose 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 from San Jose to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to Ontario is generally in the evening, when round-trip flights cost C$ 442 on average. Morning departures are around 1% more expensive than evening flights, 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 C$ 448.

Reviews of the top airline flying from San Jose to Ontario

 
See real verified KAYAK customer reviews for airlines flying from San Jose to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Jose 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 8909 reviews
7.7Boarding
8.1Crew
7.3Comfort
7.0Entertainment
6.6Food
Airline reviews

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

4.0 OkayAnna, Jul 2025IAH - YYZ
Read more United Airlines reviews

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Flight was actually on Air Canada. The flight itself was fine. Nothing special. Food was pretty pathetic except for cookies. They offered plenty of food and drinks but just wasn't very good. Even for airline food.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

Everything you need to know for your flight from San Jose to Ontario

Information on your arrival and departure airports

San Jose (SJC)

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