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Cheap flights from San Jose to Ontario from C$ 112

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 20/10. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap 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 11 September 2025.

Round-trip from

C$ 374

One-way from

C$ 112

Popular in

August

Cheapest in

March

Average price

C$ 654
24/9-30/9
  • 24/9-30/9
  • 3 total stops
  • 56h 03m total
  • San Jose to Ontario
Search Deals
20/10
  • 20/10
  • 3 total stops
  • 32h 08m total
  • San Jose to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 121 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from San Jose to Ontario

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 11 September 2025.

Wed 24/911:40 a.m.SJC - YYZ
1 stop29h 18mMultiple Airlines
Tue 30/911:00 a.m.YYZ - SJC
2 stops26h 45mMultiple Airlines
Deal found 11/9C$ 374
Wed 22/1010:53 a.m.SJC - YYZ
1 stop17h 06mMultiple Airlines
Mon 3/1110:00 a.m.YYZ - SJC
2 stops27h 09mMultiple Airlines
Deal found 9/9C$ 396
Wed 1/1011:40 a.m.SJC - YYZ
2 stops28h 28mMultiple Airlines
Fri 31/109:45 a.m.YYZ - SJC
1 stop10h 49mMultiple Airlines
Deal found 11/9C$ 405
Mon 13/106:43 p.m.SJC - YYZ
2 stops32h 30mMultiple Airlines
Fri 17/107:45 p.m.YYZ - SJC
1 stop17h 28mMultiple Airlines
Deal found 9/9C$ 407
Mon 22/96:45 p.m.SJC - YYZ
2 stops23h 07mMultiple Airlines
Thu 25/99:45 a.m.YYZ - SJC
1 stop13h 15mMultiple Airlines
Deal found 9/9C$ 425
Tue 23/911:40 a.m.SJC - YYZ
1 stop29h 18mMultiple Airlines
Fri 26/97:45 p.m.YYZ - SJC
2 stops27h 15mMultiple Airlines
Deal found 10/9C$ 431
Sat 25/107:53 p.m.SJC - YYZ
2 stops25h 33mMultiple Airlines
Sat 1/1110:00 a.m.YYZ - SJC
1 stop10h 18mMultiple Airlines
Deal found 10/9C$ 435
Fri 24/106:15 a.m.SJC - YYZ
2 stops15h 07mMultiple Airlines
Mon 27/1010:00 a.m.YYZ - SJC
1 stop27h 09mMultiple Airlines
Deal found 9/9C$ 441
Tue 23/96:35 a.m.SJC - YOW
3 stops21h 10mMultiple Airlines
Fri 26/95:55 a.m.YOW - SJC
3 stops31h 50mMultiple Airlines
Deal found 9/9C$ 546
Sat 25/101:30 p.m.SJC - YUL
2 stops19h 32mDelta
Sat 1/116:00 a.m.YUL - SJC
2 stops18h 31mDelta
Deal found 10/9C$ 654
Thu 18/96:35 a.m.SJC - YHM
3 stops15h 05mMultiple Airlines
Tue 23/96:00 a.m.YHM - SJC
2 stops31h 45mMultiple Airlines
Deal found 10/9C$ 655
Tue 23/911:40 a.m.SJC - YUL
3 stops33h 47mMultiple Airlines
Fri 26/96:45 a.m.YUL - SJC
3 stops31h 00mMultiple Airlines
Deal found 10/9C$ 676

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 11 September 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

Wed 24/9

11:40 a.m.-2:05 p.m.

2 stops23h 25m

Toronto Pearson Intl

Tue 30/9

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

2 stops18h 00m

C$ 420

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 8/11

6:18 p.m.-3:35 p.m.

1 stop18h 17m

Toronto Pearson Intl

Wed 12/11

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

1 stop33h 14m

C$ 542

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Tue 23/9

6:35 a.m.-6:45 a.m.

3 stops21h 10m

Ottawa

Fri 26/9

5:55 a.m.-10:45 a.m.

3 stops31h 50m

C$ 546

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 4/10

3:26 p.m.-10:21 a.m.

2 stops15h 55m

Toronto Pearson Intl

Tue 7/10

6:15 a.m.-6:19 p.m.

2 stops15h 04m

C$ 554

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 1/10

3:26 p.m.-11:20 a.m.

2 stops16h 54m

Toronto Pearson Intl

Tue 7/10

6:15 a.m.-6:19 p.m.

2 stops15h 04m

C$ 579

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 13/11

11:51 a.m.-3:35 p.m.

1 stop24h 44m

Toronto Pearson Intl

Thu 20/11

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

1 stop9h 14m

C$ 585

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 4/10

3:26 p.m.-9:22 a.m.

2 stops14h 56m

Toronto Pearson Intl

Sat 11/10

1:20 p.m.-10:17 p.m.

1 stop11h 57m

C$ 585

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 4/10

7:50 p.m.-3:00 p.m.

1 stop16h 10m

Toronto Pearson Intl

Tue 7/10

4:45 p.m.-11:12 a.m.

2 stops21h 27m

C$ 625

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Fri 3/10

6:35 a.m.-9:51 p.m.

1 stop12h 16m

Toronto Pearson Intl

Tue 7/10

6:15 a.m.-6:19 p.m.

2 stops15h 04m

C$ 628

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 2/10

10:30 p.m.-10:21 a.m.

1 stop8h 51m

Toronto Pearson Intl

Tue 7/10

6:15 a.m.-6:19 p.m.

2 stops15h 04m

C$ 628

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

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 to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from San Jose to Region of Ontario (average of C$ 168). Flying from San Jose to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 11 September 2025.

When flying from San Jose to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from San Jose to Region of Ontario?

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 11 September 2025.
Check out reviews from past customers who have flown with United Airlines 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.
United Airlines
7.4
Good
8,937 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 to Region of Ontario?

    Alaska Airlines, Delta, and Air Canada can get you from San Jose to Region of Ontario in just under 9h 56m. Your travel time can differ by up to 8h 21m. Airlines will cover a distance of 3483 km. Both multi-stop and direct flights can be found to your destination and back.

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

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

    Currently, January is the cheapest month in which you can book a flight from San Jose to Region of Ontario (average of C$ 168). Flying from San Jose to Region of Ontario in July is currently the most expensive (average of C$ 258). 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

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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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 260AverageC$ 476FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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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