$189 Find Cheap Flights from San Jose to Ontario - Compare and Save

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Cheap Flights from San Jose to Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Toronto
Toronto1 stop$380
Ottawa
Ottawa3 stops$663
London
London3 stops$681
Windsor
Windsor2 stops$1,065
Toronto
Toronto1 stop$380
Ottawa
Ottawa3 stops$663
London
London3 stops$681
Windsor
Windsor2 stops$1,065

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?

Flight prices are below average for this route right now.

Flights to Region of Ontario from San Jose, California usually cost between $466 and $585 in November.
The lowest price found in the past 5 days was $380 on Lufthansa (Nov 26-Dec 3).

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

The cheapest month for flights from San Jose to Ontario is December, when tickets cost $338 (return) on average. On the other hand, the most expensive months are April and July, when the average cost of round-trip tickets is $802 and $589 respectively.

Good to know

Low season

April

Cheapest flight

$189
Best time to beat the crowds with an average 27% drop 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 airlines flying from San Jose to Ontario

 
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.
7.8
DeltaOverall score based on 8653 reviews
8.5Crew
7.2Food
8.1Boarding
7.8Comfort
7.8Entertainment
Airline reviews

Had to deplane 2 x due to problems with plane. Delayed over 6 hours ans was given a $12 food credit which barely oaud for anything and limited to wear incoukd redeem.

2.0 Mediocrenichole, Oct 2026
Read more Delta reviews

Had to deplane 2 x due to problems with plane. Delayed over 6 hours ans was given a $12 food credit which barely oaud for anything and limited to wear incoukd redeem.

My flight experience was generally good, but the boarding process was stressful. I was pulled out of line at the gate during the photo ID check, and after being cleared, I was never given an explanation for the delay despite asking for clarification. This lack of communication was the only downside to an otherwise smooth trip.

Staff is friendly and helpful but flight was delayed by one hour from Detroit, making for tight window in Toronto to clear Canada Customs and pass through security screening in order to get to connecting flight on time.

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.

After a 5 hour delay waiting at the gate (3 delays adding up) with no clear reason provided, we finally boarded flew 3/4 of the way to Toronto then were turned back to New York. As we neared New York, the pilot declared that it was his fault, something to do with timing and him not being allowed into the country???? How could the airline let his happen? They had hours to prepare and make sure they had a crew available for the flight! We ended up in Toronto a day late with no sleep.

Rode in a smaller plane and short trip meant no snacks, no free wifi or tv. It was only 30min flight so honestly wasn’t a big deal to lack these items.

We were forced to wait nearly 50 additional minutes before leaving the terminal.

I appreciated friendly service from check-in, to boarding, to in-flight amenities! Attendants were accommodating and helpful. Thank you! Elaine

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Perfect. On time and the weather was perfect so we came in a few minutes early.

Upset about cancel to St. John’s and no overnight accomodation

1. Everything was satisfactory concerning the flight. 2. Can't think of what could be better right now.

Entertainment kept turning itself off. Gave up on watching a movie.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Not United Airlines' fault. It's ORL airport's fault.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

Flight was fine, it was delayed but only 30 minutes, staff were efficient, lady making announcements at LAX was really hard to understand but the rest were great.

A good, solid, no frills experience. Departed and arrived on time, staff were pleasant and attentive. Loved the Bluetooth connectivity on the SJC to IAH leg. Being able to watch movies and listen to them with my noise cancelling headphones was lovely. Missed that on the IAH to LHR leg (so I put the wired buds on and my over ear Quiet Comforts over those).

More options for your flight from San Jose to Ontario

Complete your trip to Ontario with a hotel stay or car rental