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$121+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/16. 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 12/245:55 amSJC - YYZ
2 stops15h 04mDelta
Wed 1/712:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 12/16$436
This Delta deal was found by Cheapflights users on 12/16. 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 12/245:55 amSJC - YYZ
2 stops15h 04mDelta
Tue 1/67:50 amYYZ - SJC
2 stops16h 38mDelta
Deal found 12/16$441
This Delta deal was found by Cheapflights users on 12/16. 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.
Mon 12/296:20 amSJC - YYZ
1 stop6h 39mDelta
Wed 1/712:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 12/16$475
This Delta deal was found by Cheapflights users on 12/16. 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.
Mon 12/296:20 amSJC - YYZ
1 stop6h 39mDelta
Tue 1/612:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 12/16$499
This Delta deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:20 amSJC - YYZ
1 stop6h 39mDelta
Wed 1/712:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 12/16$509
This Delta deal was found by Cheapflights users on 12/16. 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 12/245:55 amSJC - YYZ
2 stops15h 04mDelta
Sat 1/312:14 pmYYZ - SJC
1 stop12h 20mDelta
Deal found 12/16$510
This Delta deal was found by Cheapflights users on 12/16. 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 12/245:55 amSJC - YYZ
2 stops15h 04mDelta
Mon 1/57:50 amYYZ - SJC
2 stops16h 38mDelta
Deal found 12/16$515
This Delta deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:20 amSJC - YYZ
1 stop6h 39mDelta
Tue 1/66:06 amYYZ - SJC
2 stops18h 22mDelta
Deal found 12/16$519
This Delta deal was found by Cheapflights users on 12/16. 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.
Sat 12/277:15 amSJC - YYZ
2 stops12h 35mDelta
Tue 1/66:06 amYYZ - SJC
2 stops18h 22mDelta
Deal found 12/16$524
This Delta deal was found by Cheapflights users on 12/17. 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 12/245:40 pmSJC - YUL
2 stops14h 52mDelta
Wed 1/76:00 amYUL - SJC
2 stops14h 40mDelta
Deal found 12/17$817
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Tue 12/2310:30 pmSJC - YOW
1 stop15h 48mUnited Airlines
Wed 1/76:00 amYOW - SJC
2 stops17h 56mUnited Airlines
Deal found 12/16$847
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/2810:30 pmSJC - YOW
1 stop15h 48mUnited Airlines
Sun 1/47:27 pmYOW - SJC
2 stops28h 49mUnited Airlines
Deal found 12/17$933

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(Kiwi.com)

One-way from

$121
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$628
Provider with most accurate pricing for San Jose-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Jose-Toronto (YTO) flights.
Search Deals
From San Jose to Ontario
Search Deals
One-way flight from San Jose to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 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 2,558,603 searches. Data last updated December 18, 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

Sun 2/1

1:04 pm-6:43 am

1 stop14h 39m

Toronto Pearson Intl

Sun 2/8

8:00 pm-9:42 am

1 stop16h 42m

$255

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 1/8

11:27 am-1:40 pm

2 stops23h 13m

Toronto Pearson Intl

Sun 1/11

8:00 pm-6:14 pm

1 stop25h 14m

$285

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 2/5

4:06 pm-9:22 pm

1 stop26h 16m

Toronto Pearson Intl

Sun 2/8

8:00 pm-9:42 am

1 stop16h 42m

$319

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Thu 1/29

12:34 pm-12:42 am

2 stops33h 08m

Ottawa

Thu 2/5

6:00 am-8:40 am

2 stops29h 40m

$345

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 2/14

7:10 pm-3:35 pm

1 stop17h 25m

Toronto Pearson Intl

Thu 2/19

4:45 pm-10:59 pm

1 stop9h 14m

$350

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Fri 2/6

3:36 pm-3:35 pm

1 stop20h 59m

Toronto Pearson Intl

Wed 2/11

4:45 pm-9:22 am

1 stop19h 37m

$352

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sun 1/25

9:05 am-3:35 pm

1 stop27h 30m

Toronto Pearson Intl

Thu 1/29

4:45 pm-2:42 pm

1 stop24h 57m

$358

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 2/14

4:59 pm-3:35 pm

1 stop19h 36m

Toronto Pearson Intl

Tue 2/17

4:45 pm-10:28 am

1 stop20h 43m

$363

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sun 2/15

6:03 pm-3:35 pm

1 stop18h 32m

Toronto Pearson Intl

Wed 2/18

4:45 pm-10:28 am

1 stop20h 43m

$363

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 2/14

7:10 pm-3:35 pm

1 stop17h 25m

Toronto Pearson Intl

Mon 2/16

4:45 pm-8:00 pm

1 stop30h 15m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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 $202). 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 December 18, 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.

How much does it cost to fly round-trip from San Jose, California 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 December 18, 2025.
Read through reviews of airlines operating flights from San Jose to Ontario, such as Delta, United Airlines, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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
8,008 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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.
American Airlines
7.2
Good
11,054 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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.
Air Canada
7.1
Good
10,534 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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?

    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 17h 25m. Fly via Alaska Airlines, United Airlines, or Air Canada 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 Air Canada, with whom users have recently found tickets for as low as $151. However, be on the lookout for offers from United Airlines and Delta, 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 - 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, 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 $202). 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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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$207Average$493FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$208Average$447FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$350Average$695FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$389Average$562FlexibilityNo cancel feeOn-time71%

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