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$128+ Cheap flights from San Jose (SJC) to Ontario

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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$298
(Kiwi.com)

One-way from

$128
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$532
From San Jose to Ontario
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One-way flight from San Jose to Ontario
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Highest demand for flights based on searches. 5% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:19 amSJC - YYZ
1 stop17h 01mMultiple Airlines
Wed 9/1012:00 pmYYZ - SJC
2 stops13h 43mMultiple Airlines
Deal found 6/12$298
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/216:00 amSJC - YYZ
1 stop13h 50mAmerican Airlines
Sun 6/296:49 amYYZ - SJC
1 stop17h 24mAmerican Airlines
Deal found 6/11$355
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/166:30 amSJC - YUL
3 stops15h 07mMultiple Airlines
Wed 8/64:00 pmYUL - SJC
2 stops21h 36mMultiple Airlines
Deal found 6/9$357
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/251:40 pmSJC - YYZ
1 stop6h 43mDelta
Sun 6/2911:39 amYYZ - SJC
1 stop11h 16mDelta
Deal found 6/12$358
This Trip.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2511:01 amSJC - YOW
2 stops20h 20mMultiple Airlines
Wed 7/24:40 pmYOW - SJC
2 stops20h 26mMultiple Airlines
Deal found 6/11$364
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/306:30 amSJC - YHM
2 stops15h 11mMultiple Airlines
Mon 8/46:00 amYHM - SJC
3 stops31h 36mMultiple Airlines
Deal found 6/10$367
This Alaska Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/38:00 amSJC - YYZ
2 stops28h 00mAlaska Airlines
Wed 9/104:45 pmYYZ - SJC
2 stops20h 13mAlaska Airlines
Deal found 6/12$395
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:30 amSJC - YYZ
1 stop14h 28mUnited Airlines
Sat 10/1111:00 amYYZ - SJC
1 stop10h 14mUnited Airlines
Deal found 6/10$429
This Mytrip deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2511:01 amSJC - YTZ
3 stops29h 36mMultiple Airlines
Sun 6/2912:00 pmYTZ - SJC
3 stops25h 06mMultiple Airlines
Deal found 6/12$443
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2511:00 pmSJC - YUL
2 stops16h 53mDelta
Fri 8/16:00 amYUL - SJC
2 stops18h 46mDelta
Deal found 6/11$527
This Mytrip deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/274:22 pmSJC - YXU
3 stops33h 52mMultiple Airlines
Sun 8/36:00 amYXU - SJC
3 stops33h 05mMultiple Airlines
Deal found 6/12$599
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:00 amSJC - YUL
2 stops13h 35mAmerican Airlines
Wed 9/33:44 pmYUL - SJC
2 stops20h 26mAmerican Airlines
Deal found 6/10$627

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 2,558,603 searches. Data last updated June 12, 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

Thu 9/4

10:19 am-6:20 am

1 stop17h 01m

Toronto Pearson Intl

Wed 9/10

12:00 pm-10:43 pm

2 stops13h 43m

$298

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Wed 7/16

6:30 am-12:37 am

3 stops15h 07m

Montreal Pierre Elliott Trudeau Intl

Wed 8/6

4:00 pm-10:36 am

2 stops21h 36m

$357

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 6/25

1:40 pm-11:23 pm

1 stop6h 43m

Toronto Pearson Intl

Sun 6/29

11:39 am-7:55 pm

1 stop11h 16m

$358

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Wed 6/25

11:01 am-10:21 am

2 stops20h 20m

Ottawa

Wed 7/2

4:40 pm-10:06 am

2 stops20h 26m

$364

San JoseHamilton

SJC - YHM

SJCYHM

San Jose

Wed 7/30

6:30 am-12:41 am

2 stops15h 11m

Hamilton

Mon 8/4

6:00 am-10:36 am

3 stops31h 36m

$367

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 9/3

8:00 am-3:00 pm

2 stops28h 00m

Toronto Pearson Intl

Wed 9/10

4:45 pm-9:58 am

2 stops20h 13m

$395

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 10/4

6:30 am-11:58 pm

1 stop14h 28m

Toronto Pearson Intl

Sat 10/11

11:00 am-6:14 pm

1 stop10h 14m

$429

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 6/28

1:13 pm-12:35 pm

1 stop20h 22m

Toronto Pearson Intl

Sat 7/5

6:50 am-12:18 pm

1 stop8h 28m

$435

San JoseToronto

SJC - YTZ

SJCYTZ

San Jose

Wed 6/25

11:01 am-7:37 pm

3 stops29h 36m

Toronto Island

Sun 6/29

12:00 pm-10:06 am

3 stops25h 06m

$443

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Fri 7/25

11:00 pm-6:53 pm

2 stops16h 53m

Montreal Pierre Elliott Trudeau Intl

Fri 8/1

6:00 am-9:46 pm

2 stops18h 46m

$527

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 48 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 $243). Flying from San Jose to Region of Ontario in July is currently the most expensive (average of $353). 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 June 12, 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from San Jose to Ontario, such as Alaska Airlines, Delta and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
WestJet
7.2
Good
2,868 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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?

    Most people fly from San Jose (SJC) if they book a flight from San Jose to Ontario. San Jose is conveniently located just 2.9 mi from San Jose’s city center.

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

    One-way options have recently been found by users for as low as $151 on United Airlines. Other airlines that offer cheap prices include Delta from $156 and Air Canada from $186 one-way.

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

    When deciding which route to take from San Jose to Region of Ontario consider San Jose - Toronto Pearson Intl, San Jose - Montreal Pierre Elliott Trudeau Intl or San Jose - Ottawa as they are the most popular.

  • 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 $243). Flying from San Jose to Region of Ontario in July is currently the most expensive (average of $353). 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.

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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 4 airlines flying from San Jose to Ontario

Discover the top 4 airlines 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$185Average$465FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$297Average$710FlexibilityNo cancel feeOn-time69%
DeltaCheapest$339Average$469FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$440Average$567FlexibilityNo cancel feeOn-time71%

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