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Cheap flights from San Jose, CA to Ontario from C$ 142

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Jose to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from San Jose to Ontario
Explore the most affordable flight options available from San Jose to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 December 2025.

Fri 26/127:15 a.m.SJC - YYZ
2 stops12h 35mDelta
Tue 6/112:21 p.m.YYZ - SJC
1 stop11h 59mDelta
Deal found 9/12C$ 586
Fri 26/127:15 a.m.SJC - YYZ
2 stops13h 44mDelta
Thu 8/16:10 a.m.YYZ - SJC
1 stop9h 46mDelta
Deal found 9/12C$ 621
Fri 26/127:15 a.m.SJC - YYZ
2 stops13h 44mDelta
Sat 10/16:30 a.m.YYZ - SJC
2 stops14h 10mDelta
Deal found 9/12C$ 625
Fri 26/127:15 a.m.SJC - YYZ
2 stops13h 44mDelta
Sun 11/16:06 a.m.YYZ - SJC
2 stops18h 14mDelta
Deal found 9/12C$ 627
Fri 12/126:35 a.m.SJC - YYZ
1 stop12h 23mDelta
Tue 6/112:21 p.m.YYZ - SJC
1 stop11h 59mDelta
Deal found 9/12C$ 640
Sun 21/125:55 a.m.SJC - YYZ
2 stops14h 25mDelta
Tue 6/112:21 p.m.YYZ - SJC
1 stop11h 59mDelta
Deal found 9/12C$ 652
Sun 21/125:55 a.m.SJC - YYZ
2 stops14h 25mDelta
Wed 7/17:45 a.m.YYZ - SJC
2 stops11h 29mDelta
Deal found 11/12C$ 659
Fri 26/127:15 a.m.SJC - YYZ
2 stops13h 44mDelta
Wed 7/16:10 a.m.YYZ - SJC
1 stop9h 46mDelta
Deal found 9/12C$ 669
Tue 23/125:55 a.m.SJC - YYZ
2 stops15h 04mDelta
Thu 1/17:50 a.m.YYZ - SJC
2 stops16h 14mDelta
Deal found 11/12C$ 676
Sun 21/125:55 a.m.SJC - YYZ
2 stops14h 25mDelta
Fri 9/16:10 a.m.YYZ - SJC
1 stop9h 46mDelta
Deal found 9/12C$ 687
Wed 31/128:00 a.m.SJC - YUL
1 stop12h 45mMultiple Airlines
Wed 7/14:35 p.m.YUL - SJC
2 stops22h 34mMultiple Airlines
Deal found 12/12C$ 939
Wed 17/1212:55 p.m.SJC - YUL
1 stop8h 04mDelta
Thu 8/17:30 p.m.YUL - SJC
2 stops28h 58mDelta
Deal found 10/12C$ 1,100

Find flight deals from San Jose to Ontario

Keep the following information in mind while searching for San Jose to Ontario flight deals. Data was last updated 12 December 2025.

Round-trip from

C$ 372

One-way from

C$ 142

Popular in

August

Cheapest in

March

Average price

C$ 866
22/1-29/1
  • 22/1-29/1
  • 3 total stops
  • 40h 21m total
  • San Jose to Ontario
Search Deals
11/1
  • 11/1
  • 1 total stop
  • 15h 53m total
  • San Jose to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 147 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Jose to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 December 2025.
Use the filters below to find and compare flights from San Jose to Ontario that are best for you.

Fly from

San Jose

Fly to

Ontario

Route

Depart

Return

Price

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 12/1

11:44 a.m.-7:36 p.m.

2 stops28h 52m

Toronto Pearson Intl

Tue 20/1

4:45 p.m.-9:48 a.m.

1 stop20h 03m

C$ 393

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 26/1

6:02 p.m.-3:35 p.m.

1 stop18h 33m

Toronto Pearson Intl

Thu 29/1

4:45 p.m.-9:48 a.m.

1 stop20h 03m

C$ 463

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 20/1

6:02 p.m.-3:35 p.m.

1 stop18h 33m

Toronto Pearson Intl

Tue 27/1

4:45 p.m.-5:08 p.m.

1 stop27h 23m

C$ 472

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sun 25/1

6:15 a.m.-3:35 p.m.

1 stop30h 20m

Toronto Pearson Intl

Thu 29/1

4:45 p.m.-2:42 p.m.

1 stop24h 57m

C$ 476

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Fri 23/1

9:05 a.m.-3:35 p.m.

1 stop27h 30m

Toronto Pearson Intl

Fri 30/1

4:45 p.m.-2:42 p.m.

1 stop24h 57m

C$ 487

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 5/1

4:10 p.m.-2:14 p.m.

2 stops19h 04m

Toronto Pearson Intl

Fri 30/1

7:30 a.m.-8:56 p.m.

2 stops16h 26m

C$ 525

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Fri 23/1

6:20 a.m.-3:59 p.m.

1 stop6h 39m

Toronto Pearson Intl

Sun 25/1

6:10 a.m.-12:56 p.m.

1 stop9h 46m

C$ 539

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 21/1

6:20 a.m.-3:59 p.m.

1 stop6h 39m

Toronto Pearson Intl

Mon 26/1

6:10 a.m.-12:56 p.m.

1 stop9h 46m

C$ 539

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 21/1

7:45 a.m.-10:42 p.m.

2 stops11h 57m

Toronto Pearson Intl

Sat 24/1

6:10 a.m.-12:56 p.m.

1 stop9h 46m

C$ 549

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Thu 8/1

4:00 p.m.-2:27 p.m.

2 stops19h 27m

Ottawa

Thu 15/1

5:00 a.m.-1:39 p.m.

2 stops11h 39m

C$ 634

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 60 results
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Best time to book a flight from San Jose to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from San Jose with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from San Jose, California to Region of Ontario?

Currently, February is the cheapest month in which you can book a flight from San Jose, California to Region of Ontario (average of C$ 175). Flying from San Jose, California to Region of Ontario in August is currently the most expensive (average of C$ 279). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SJC to ON?

Find hourly flight availability from San Jose to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 61% on flights from San Jose, California to Region of Ontario by exploring options for tickets in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from San Jose to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Jose to Ontario?

    For a flight from San Jose to Ontario, you will be flying from San Jose. San Jose (SJC) is just 4.6 km from the centre of the city.

  • How long is the flight from San Jose, California to Region of Ontario?

    For as low as C$ 705, Alaska Airlines can have you in Region of Ontario from San Jose, California in 12h 27m. The distance between San Jose, California and Region of Ontario is about 4051 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from San Jose, California to Region of Ontario one-way?

    The cheapest airlines for a one-way flight from San Jose, California to Region of Ontario are Air Canada (C$ 186), Delta (C$ 201), and United Airlines (C$ 223).

  • What are the most popular routes from San Jose, California to Region of Ontario?

    While some choose either San Jose - Montreal Pierre Elliott Trudeau Intl or San Jose - Ottawa, San Jose - Toronto Pearson Intl is the most popular route from San Jose, California to Region of Ontario.

  • Can I find deals for flights from San Jose to Ontario that include hotel bookings?

    Yes. In addition to deals on San Jose to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Jose to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Ontario.

  • Can I find deals for business class flights from San Jose to Ontario?

    Yes. Cheapflights offers flight deals from San Jose to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Jose, California to Region of Ontario?

    Currently, February is the cheapest month in which you can book a flight from San Jose, California to Region of Ontario (average of C$ 175). Flying from San Jose, California to Region of Ontario in August is currently the most expensive (average of C$ 279). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for San Jose to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from San Jose to Ontario?

When you search for this flight from San Jose to Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from San Jose to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from San Jose.

Can Cheapflights find flights from San Jose to Ontario with no change fees?

Need flexible booking options for your flight to Ontario from San Jose? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from San Jose to Ontario become cheaper?

Yes! Start tracking prices for San Jose to Ontario flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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