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$160+ Cheap flights from San Jose, CA (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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
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 October 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$357
(Kiwi.com)

One-way from

$160
(United Airlines)

Popular in

November

Cheapest in

March

Average price

$469
Provider with most accurate pricing for San Jose-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for San Jose-Toronto (YTO) flights.
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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. 17% potential increase in price ($102 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 27, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Wed 12/32:01 pmSJC - YYZ
1 stop28h 22mMultiple Airlines
Sat 12/610:00 amYYZ - SJC
1 stop31h 32mMultiple Airlines
Deal found 10/25$357
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
Sat 12/65:50 pmSJC - YYZ
1 stop18h 45mMultiple Airlines
Wed 1/141:30 pmYYZ - SJC
2 stops31h 26mMultiple Airlines
Deal found 10/26$360
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
Tue 11/186:13 pmSJC - YYZ
1 stop18h 22mMultiple Airlines
Tue 12/910:00 amYYZ - SJC
1 stop15h 59mMultiple Airlines
Deal found 10/26$379
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Tue 12/96:15 amSJC - YYZ
1 stop12h 08mMultiple Airlines
Tue 12/169:35 amYYZ - SJC
2 stops12h 07mMultiple Airlines
Deal found 10/25$387
This Delta deal was found by Cheapflights users on 10/26. 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.
Thu 12/410:25 pmSJC - YYZ
1 stop9h 42mDelta
Tue 12/912:23 pmYYZ - SJC
1 stop11h 18mDelta
Deal found 10/26$392
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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.
Sun 11/168:10 amSJC - YYZ
1 stop28h 25mAlaska Airlines
Wed 11/194:45 pmYYZ - SJC
2 stops21h 12mAlaska Airlines
Deal found 10/25$397
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
Wed 12/102:01 pmSJC - YYZ
1 stop28h 22mMultiple Airlines
Wed 12/176:45 pmYYZ - SJC
2 stops22h 47mMultiple Airlines
Deal found 10/26$400
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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.
Tue 12/911:16 amSJC - YYZ
1 stop25h 19mAlaska Airlines
Tue 12/164:45 pmYYZ - SJC
1 stop26h 09mAlaska Airlines
Deal found 10/25$404
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 11/106:30 amSJC - YOW
1 stop11h 48mUnited Airlines
Fri 11/145:14 pmYOW - SJC
1 stop8h 16mUnited Airlines
Deal found 10/27$500
This Delta deal was found by Cheapflights users on 10/26. 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 12/105:45 amSJC - YUL
2 stops15h 02mDelta
Wed 12/177:10 amYUL - SJC
2 stops15h 08mDelta
Deal found 10/26$602
This Mytrip deal was found by Cheapflights users on 10/26. 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.
Thu 12/411:40 amSJC - YTZ
3 stops26h 08mMultiple Airlines
Tue 12/94:30 pmYTZ - SJC
3 stops29h 26mMultiple Airlines
Deal found 10/26$645
This Delta deal was found by Cheapflights users on 10/27. 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.
Thu 12/115:45 amSJC - YUL
2 stops15h 02mDelta
Thu 12/187:10 amYUL - SJC
2 stops18h 02mDelta
Deal found 10/27$648

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 October 27, 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 12/3

2:01 pm-9:23 pm

1 stop28h 22m

Toronto Pearson Intl

Sat 12/6

10:00 am-2:32 pm

1 stop31h 32m

$357

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 12/9

10:25 pm-11:07 am

1 stop9h 42m

Toronto Pearson Intl

Tue 12/16

12:23 pm-10:55 pm

1 stop13h 32m

$392

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 12/4

6:18 am-3:35 pm

1 stop30h 17m

Toronto Pearson Intl

Mon 12/8

4:45 pm-10:59 pm

1 stop9h 14m

$392

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 12/4

10:25 pm-11:07 am

1 stop9h 42m

Toronto Pearson Intl

Tue 12/9

12:23 pm-8:41 pm

1 stop11h 18m

$392

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sun 11/16

8:10 am-3:35 pm

1 stop28h 25m

Toronto Pearson Intl

Wed 11/19

4:45 pm-10:57 am

2 stops21h 12m

$397

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 11/24

6:25 am-9:59 pm

1 stop12h 34m

Toronto Pearson Intl

Thu 11/27

6:30 am-7:22 pm

2 stops15h 52m

$402

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 12/6

5:30 pm-11:07 am

2 stops14h 37m

Toronto Pearson Intl

Mon 12/8

12:23 pm-8:41 pm

1 stop11h 18m

$402

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 12/4

9:50 am-11:59 pm

2 stops11h 09m

Toronto Pearson Intl

Sun 12/14

12:23 pm-8:41 pm

1 stop11h 18m

$402

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 2/14

3:05 pm-3:35 pm

1 stop21h 30m

Toronto Pearson Intl

Mon 2/23

4:45 pm-9:12 am

1 stop19h 27m

$404

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 12/9

11:16 am-3:35 pm

1 stop25h 19m

Toronto Pearson Intl

Tue 12/16

4:45 pm-3:54 pm

1 stop26h 09m

$404

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

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 $127). Flying from San Jose, California to Region of Ontario in August is currently the most expensive (average of $203). 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 October 27, 2025.

A simple way to save on the total cost of your ticket is to fly from San Jose, California to Region of Ontario in the afternoon. If you’re flexible enough to do this you can expect to save up to 64% on your trip compared to booking a flight in the morning.

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 October 27, 2025.
Read through reviews of airlines operating flights from San Jose to Ontario, such as Porter Airlines, Delta, and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
384 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Delta
7.9
Good
7,996 reviews
Porter Airlines
8.0
Very good
384 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,999 reviews
Porter Airlines
8.0
Very good
384 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
American Airlines
7.2
Good
11,031 reviews
Porter Airlines
8.0
Very good
384 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,367 reviews
Porter Airlines
8.0
Very good
384 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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.

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

    There are many flights that can get you from San Jose, California to Region of Ontario in 9h 42m. Fly via Delta, Alaska Airlines, or United Airlines to get the fastest option. The distance between San Jose, California and Region of Ontario is about 2238 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $160. However, be on the lookout for offers from Delta and Alaska Airlines, as they are both options that can get you from San Jose, California to Region of Ontario for a low price.

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

    When deciding which route to take from San Jose, California to Region of Ontario consider San Jose - Toronto Pearson Intl, San Jose - Hamilton or San Jose - Montreal Pierre Elliott Trudeau Intl 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, 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 $127). Flying from San Jose, California to Region of Ontario in August is currently the most expensive (average of $203). 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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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 October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$207Average$447FlexibilityNo cancel feeOn-time67%
DeltaCheapest$207Average$488FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$350Average$696FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$435Average$562FlexibilityNo cancel feeOn-time71%

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