$154 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 6/1. 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 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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Cheap Flights from San Jose to Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Toronto
Toronto2 stops$383
Ottawa
Ottawa2 stops$479
London
London2 stops$700
Windsor
Windsor2 stops$825
Sudbury
Sudbury2 stops$810
Sault Ste Marie
Sault Ste Marie2 stops$621
Toronto
Toronto2 stops$383
Ottawa
Ottawa2 stops$479
London
London2 stops$700
Windsor
Windsor2 stops$825
Sudbury
Sudbury2 stops$810
Sault Ste Marie
Sault Ste Marie2 stops$621

Book Cheap San Jose to Ontario Plane Tickets

 
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

Tue, May 5 - Wed, May 6
United Airlines Logo
2:46 pm - 1:42 pm
SJC
-
YYZ
19h 56m
2 stops
United Airlines Logo
4:18 pm - 9:32 pm
YYZ
-
SJC
8h 14m
1 stop
$383United Airlines
Thu, May 28 - Tue, Jun 2
WestJet Logo
2:51 pm - 6:55 am
SJC
-
YYZ
13h 04m
2 stops
WestJet Logo
9:00 am - 7:19 pm
YYZ
-
SJC
13h 19m
2 stops
$393WestJet
Sun, May 10 - Sat, Jun 13
Delta Logo
10:00 pm - 12:19 pm
SJC
-
YYZ
11h 19m
1 stop
Delta Logo
11:38 am - 9:42 pm
YYZ
-
SJC
13h 04m
1 stop
$397Delta
Mon, May 4 - Thu, May 7
Multiple Airlines Logo
8:22 pm - 8:00 pm
SJC
-
YYZ
20h 38m
1 stop
Multiple Airlines Logo
6:15 am - 3:32 pm
YYZ
-
SJC
12h 17m
2 stops
$400Multiple Airlines
Mon, Jun 8 - Tue, Jun 16
Delta Logo
6:35 am - 9:59 pm
SJC
-
YYZ
12h 24m
1 stop
Delta Logo
5:45 pm - 11:39 pm
YYZ
-
SJC
8h 54m
1 stop
$402Delta
Sat, Sep 12 - Sun, Sep 20
Multiple Airlines Logo
7:15 am - 9:15 pm
SJC
-
YYZ
11h 00m
2 stops
Multiple Airlines Logo
9:30 am - 6:26 pm
YYZ
-
SJC
11h 56m
1 stop
$410Multiple Airlines
Sat, Aug 29 - Sat, Sep 5
Air Canada Logo
1:00 pm - 10:06 am
SJC
-
YTZ
18h 06m
2 stops
Air Canada Logo
7:20 pm - 1:03 pm
YTZ
-
SJC
20h 43m
2 stops
$487Air Canada
Sat, Aug 29 - Sat, Sep 5
Air Canada Logo
8:45 am - 10:06 am
SJC
-
YTZ
22h 21m
2 stops
Air Canada Logo
7:20 pm - 1:03 pm
YTZ
-
SJC
20h 43m
2 stops
$509Air Canada
Sat, May 23 - Sat, May 30
American Airlines Logo
11:48 am - 9:56 am
SJC
-
YUL
19h 08m
2 stops
American Airlines Logo
10:30 am - 11:13 pm
YUL
-
SJC
15h 43m
2 stops
$542American Airlines
Sat, May 23 - Sat, May 30
American Airlines Logo
11:48 am - 9:56 am
SJC
-
YUL
19h 08m
2 stops
American Airlines Logo
3:48 pm - 11:13 pm
YUL
-
SJC
10h 25m
1 stop
$677American Airlines
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, California to Region of Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Jose, California to Region of Ontario departing in May.

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 April, when tickets cost $309 (return) on average. On the other hand, the most expensive months are August and October, when the average cost of round-trip tickets is $697 and $573 respectively.

Good to know

Low seasonJanuary
Cheapest flight$154
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly with an average 10% increase in price.
Flight from San Jose to Toronto Pearson Airport

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 travelers 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.

Reviews of the top 4 airlines serving 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.
7.9
DeltaOverall score based on 8390 reviews
7.8Entertainment
8.5Crew
7.2Food
8.1Boarding
7.9Comfort
Airline reviews

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

10.0 ExcellentSarah, Apr 2026
LAX - SFO
Read more Delta reviews

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

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

It was perfect! I've never flown with United before, but I definitely will in the future

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

The business class seat is exceptional. I wish the food is more palatable.

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Business class seats felt very cramped compared to other airlines.

OK, we were delayed and had to de plane and reboard.

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

I cancelled my ticket less than 24 hours deadline but I didn’t get refunded.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

The flight itself was excellent but the gate attendant made me check my carryon since she said it was an inch too big. I’ve had no problems with this carryon on recent flights on Qantas, Delta, Austrian, Southwest Airlines even though the overhead bins are the same size. there were other carryons in the bins that also looked larger than mine and there was room left in the bins for more. When I picked up my carryon from baggage claim one of the wheels had broken off.

I was in last row so that is never great bc the person in front of me leaned his seat all the way back into me.

The experience at checkin for my American Airlines flight from Sacramento to LAX was very good including the assistance I received in getting my bags checked in and boarding passes printed. Was pleasantly surprised the my bags were checked through all the way to my destination at Clark International Airport in Angeles, Philippines.

Terrible planning. And even worse gate agents. Absolutely rude behavior.

Flight was scheduled at 11:26am but they keep Delaying until midnight. They waited at airport restless.

Rough flight No beverage service due to turbulence Bottom Seat cushion was non existent

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

My original flight was cancelled and then rebooked four hours later on a recovery flight, but I was checked in as stanby and had no seats so as a family of four we were concerned about not being seated altogether. Our flight then got delayed by another 1.5 hours and when seats were assigned at the gate, three of the four of us were together and we could get my wife closer, they offered no assistance.

Good boarding but extremely cold temperature in both flights (60 F!).

Very rude gate attendants in San Francisco who didn’t let me bring my little carry on (smaller than usual size) and after boarding I realized that there still were a lot of overhead compartment space (like a full section available in some spots). That made me lose 30 minutes at my destination at 1am and it could have broken something fragile that I had in it

I want to thank Carlos at the Miami AC desk - he was amazing and went over and above to help us out. Thank you Carlos and all the best to you!!! You made our faith in AC feel great! Sincerely, David Cubitt

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

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

Information on your arrival and departure airports