C$ 174 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 14/7. 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

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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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Flights Deals

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$ 566
London
London3 stopsC$ 869
Ottawa
Ottawa2 stopsC$ 566
London
London3 stopsC$ 869

Cheap Flight Deals from San Jose to Ontario (SJC-CAON)

 
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.

Recent round-trip flight deals from San Jose to Ontario

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Jose to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
6:00 a.m. - 5:20 p.m.SJC-YYZ
8h 20m1 stop
 Logo
9:45 a.m. - 10:05 a.m.YYZ-SJC
27h 20m2 stops
C$ 372
Find Deal
Wed, 28 May - Sun, 1 Jun
 Logo
4:28 p.m. - 5:20 p.m.SJC-YYZ
21h 52m1 stop
 Logo
9:45 a.m. - 11:29 p.m.YYZ-SJC
16h 44m2 stops
C$ 374
Find Deal
Tue, 27 May - Sat, 31 May
Delta Logo
1:27 p.m. - 11:14 p.m.SJC-YYZ
6h 47m1 stop
Delta Logo
5:50 p.m. - 10:20 p.m.YYZ-SJC
7h 30m1 stop
C$ 530Delta
Find Deal
Tue, 20 May - Sat, 24 May
Delta Logo
6:25 p.m. - 10:20 a.m.SJC-YYZ
12h 55m2 stops
Delta Logo
1:25 p.m. - 11:00 p.m.YYZ-SJC
12h 35m1 stop
C$ 543Delta
Find Deal
Fri, 16 May - Sun, 18 May
Alaska Airlines Logo
2:53 p.m. - 3:00 p.m.SJC-YYZ
21h 07m2 stops
Alaska Airlines Logo
4:45 p.m. - 8:46 a.m.YYZ-SJC
19h 01m2 stops
C$ 551Alaska Airlines
Find Deal
Tue, 27 May - Sat, 31 May
Alaska Airlines Logo
1:31 p.m. - 3:00 p.m.SJC-YYZ
22h 29m1 stop
Alaska Airlines Logo
4:45 p.m. - 10:03 p.m.YYZ-SJC
8h 18m1 stop
C$ 590Alaska Airlines
Find Deal
Mon, 19 May - Wed, 15 Oct
United Airlines Logo
6:45 p.m. - 9:19 a.m.SJC-YYZ
11h 34m2 stops
United Airlines Logo
6:35 p.m. - 9:51 a.m.YYZ-SJC
18h 16m2 stops
C$ 610United Airlines
Find Deal
Mon, 19 May - Wed, 15 Oct
American Airlines Logo
7:16 p.m. - 10:25 a.m.SJC-YYZ
12h 09m2 stops
American Airlines Logo
1:29 p.m. - 10:46 p.m.YYZ-SJC
12h 17m2 stops
C$ 613American Airlines
Find Deal
Sat, 17 May - Sun, 18 May
American Airlines Logo
2:15 p.m. - 12:30 p.m.SJC-YYZ
19h 15m1 stop
American Airlines Logo
5:20 p.m. - 11:15 a.m.YYZ-SJC
20h 55m1 stop
C$ 642American Airlines
Find Deal
Wed, 14 May - Thu, 15 May
United Airlines Logo
6:24 p.m. - 12:58 p.m.SJC-YYZ
15h 34m1 stop
United Airlines Logo
7:00 a.m. - 5:18 p.m.YYZ-SJC
13h 18m2 stops
C$ 656United Airlines
Find Deal
Mon, 21 Jul - Fri, 25 Jul
Useful Info

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.

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 September, when tickets cost C$ 594 (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$ 867 and C$ 736 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 the flight from San Jose to Ontario, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.


Good to know

Low seasonFebruary
High seasonJuly
Cheapest flightC$ 174
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 4% lower 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.

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 8701 reviews
7.1Entertainment
8.1Crew
7.7Boarding
6.6Food
7.3Comfort
Airline reviews

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

2.0 MediocreJane, May 2025SFO - LHR
Read more United Airlines reviews

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

I do prefer to fly United and have always had excellent service, except for bad weather. Flights are on time and staff is alway curtious and helpful

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Seats were comfortable. It’s was so cold and very uncomfortable. I paid 2000 miles for wifi service that was choppy the whole flight. Would like to be reimbursed for my miles Food was so disappointing. Three cold and terrible meals for $3000 round trip. This needs to be better.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

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

Information on your arrival and departure airports

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