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Cheap flights from San Jose, CA to Ontario from C$ 140

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 13/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
28 Feb — 7 Mar1
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 29 January 2026.

Sun 15/38:20 p.m.
SJC
-
YYZ
1 stop7h 23m
Multiple Airlines
Sun 22/38:00 p.m.
YYZ
-
SJC
1 stop16h 25m
Multiple Airlines
Deal found 29/1C$ 387
Fri 27/27:10 p.m.
SJC
-
YYZ
1 stop17h 25m
Alaska Airlines
Mon 2/34:45 p.m.
YYZ
-
SJC
1 stop9h 14m
Alaska Airlines
Deal found 27/1C$ 496
Thu 26/210:16 a.m.
SJC
-
YYZ
1 stop26h 19m
Alaska Airlines
Mon 2/34:45 p.m.
YYZ
-
SJC
1 stop9h 14m
Alaska Airlines
Deal found 27/1C$ 497
Mon 2/36:20 a.m.
SJC
-
YYZ
1 stop6h 39m
Delta
Tue 10/33:59 p.m.
YYZ
-
SJC
2 stops10h 59m
Delta
Deal found 27/1C$ 509
Wed 18/26:20 a.m.
SJC
-
YYZ
1 stop6h 39m
Delta
Fri 27/212:20 p.m.
YYZ
-
SJC
1 stop11h 58m
Delta
Deal found 27/1C$ 512
Tue 24/22:50 p.m.
SJC
-
YYZ
2 stops21h 45m
Alaska Airlines
Mon 2/34:45 p.m.
YYZ
-
SJC
2 stops20h 02m
Alaska Airlines
Deal found 27/1C$ 516
Sat 14/23:55 p.m.
SJC
-
YYZ
2 stops15h 03m
United Airlines
Tue 24/24:10 p.m.
YYZ
-
SJC
1 stop7h 55m
United Airlines
Deal found 28/1C$ 519
Sat 30/56:00 p.m.
SJC
-
YYZ
1 stop18h 45m
Alaska Airlines
Sat 6/64:55 p.m.
YYZ
-
SJC
1 stop9h 31m
Alaska Airlines
Deal found 27/1C$ 523
Wed 18/28:50 a.m.
SJC
-
YYZ
2 stops12h 09m
United Airlines
Fri 27/24:10 p.m.
YYZ
-
SJC
1 stop7h 55m
United Airlines
Deal found 27/1C$ 524
Mon 2/37:10 p.m.
SJC
-
YYZ
1 stop17h 25m
Alaska Airlines
Mon 9/34:45 p.m.
YYZ
-
SJC
2 stops21h 09m
Alaska Airlines
Deal found 29/1C$ 525
Thu 28/58:45 a.m.
SJC
-
YOW
2 stops13h 51m
Air Canada
Wed 10/66:00 a.m.
YOW
-
SJC
2 stops14h 34m
Air Canada
Deal found 28/1C$ 699
Thu 28/56:37 p.m.
SJC
-
YOW
2 stops12h 26m
United Airlines
Wed 10/65:25 p.m.
YOW
-
SJC
1 stop8h 11m
United Airlines
Deal found 28/1C$ 781

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 29 January 2026.

Round-trip from

C$ 387

One-way from

C$ 140

Popular in

August

Cheapest in

November

Average price

C$ 534
15/3-22/3
  • 15/3-22/3
  • 2 total stops
  • 23h 48m total
  • San Jose to Ontario
Search Deals
13/4
  • 13/4
  • 1 total stop
  • 17h 14m total
  • San Jose to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 29 January 2026.
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

Sun 15/3

8:20 p.m.-6:43 a.m.

1 stop7h 23m

Toronto Pearson Intl

Sun 22/3

8:00 p.m.-9:25 a.m.

1 stop16h 25m

C$ 387

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 2/3

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

1 stop6h 39m

Toronto Pearson Intl

Tue 10/3

3:59 p.m.-11:58 p.m.

2 stops10h 59m

C$ 509

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 18/2

8:50 a.m.-11:59 p.m.

2 stops12h 09m

Toronto Pearson Intl

Thu 26/2

4:10 p.m.-9:05 p.m.

1 stop7h 55m

C$ 509

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 18/2

4:59 p.m.-3:35 p.m.

1 stop19h 36m

Toronto Pearson Intl

Fri 20/2

4:45 p.m.-10:59 p.m.

1 stop9h 14m

C$ 512

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Fri 13/3

10:50 p.m.-11:10 a.m.

1 stop9h 20m

Toronto Pearson Intl

Sun 22/3

12:25 p.m.-9:33 p.m.

1 stop12h 08m

C$ 512

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 2/3

10:35 p.m.-1:24 p.m.

2 stops11h 49m

Toronto Pearson Intl

Mon 9/3

12:25 p.m.-9:33 p.m.

1 stop12h 08m

C$ 512

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 18/2

10:35 p.m.-11:07 a.m.

1 stop9h 32m

Toronto Pearson Intl

Tue 24/2

6:10 a.m.-12:39 p.m.

1 stop9h 29m

C$ 512

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sun 17/5

10:56 p.m.-1:25 p.m.

1 stop11h 29m

Toronto Pearson Intl

Sun 24/5

1:30 p.m.-10:53 p.m.

1 stop12h 23m

C$ 512

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 17/2

10:35 p.m.-11:07 a.m.

1 stop9h 32m

Toronto Pearson Intl

Tue 24/2

6:10 a.m.-12:39 p.m.

1 stop9h 29m

C$ 512

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Thu 28/5

8:45 a.m.-1:36 a.m.

2 stops13h 51m

Ottawa

Wed 10/6

6:00 a.m.-5:34 p.m.

2 stops14h 34m

C$ 699

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

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$ 172). Flying from San Jose, California to Region of Ontario in August is currently the most expensive (average of C$ 276). 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 29 January 2026.
Check out reviews from past customers who have flown with Delta from San Jose to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,128 reviews
Check prices

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
7.9
Good
8,128 reviews
Delta
7.9
Good
8,128 reviews
Check prices

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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$ 509, Delta can have you in Region of Ontario from San Jose, California in 6h 39m. The distance between San Jose, California and Region of Ontario is about 3602 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$ 184), Delta (C$ 212), and United Airlines (C$ 220).

  • 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 - Toronto Island, 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$ 172). Flying from San Jose, California to Region of Ontario in August is currently the most expensive (average of C$ 276). 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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Top airline flying from San Jose to Ontario

Discover the top airline that operate flights from San Jose to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 29 January 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 220AverageC$ 317FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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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