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$102+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 4, 2025.

This Delta deal was found by Cheapflights users on 12/2. 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 12/255:55 amSJC - YYZ
2 stops14h 25mDelta
Tue 1/612:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 12/2$410
This Delta deal was found by Cheapflights users on 12/2. 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 12/810:25 pmSJC - YYZ
1 stop9h 42mDelta
Tue 1/1312:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 12/2$415
This Delta deal was found by Cheapflights users on 12/2. 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 12/86:59 pmSJC - YYZ
2 stops10h 54mDelta
Sat 1/176:10 amYYZ - SJC
1 stop9h 46mDelta
Deal found 12/2$424
This Delta deal was found by Cheapflights users on 12/4. 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 12/175:45 amSJC - YYZ
2 stops15h 14mDelta
Wed 1/77:45 amYYZ - SJC
2 stops14h 27mDelta
Deal found 12/4$430
This Delta deal was found by Cheapflights users on 12/4. 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 12/253:30 pmSJC - YYZ
2 stops14h 28mDelta
Fri 1/912:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 12/4$435
This Delta deal was found by Cheapflights users on 12/4. 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 12/255:40 pmSJC - YYZ
2 stops12h 18mDelta
Sat 1/107:40 amYYZ - SJC
2 stops13h 00mDelta
Deal found 12/4$438
This Delta deal was found by Cheapflights users on 12/3. 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 12/1512:55 pmSJC - YYZ
1 stop8h 04mDelta
Sat 1/106:10 amYYZ - SJC
1 stop9h 46mDelta
Deal found 12/3$439
This Delta deal was found by Cheapflights users on 12/4. 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 12/253:30 pmSJC - YYZ
2 stops14h 28mDelta
Sun 1/116:00 amYYZ - SJC
2 stops18h 28mDelta
Deal found 12/4$440
This Delta deal was found by Cheapflights users on 12/3. 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 12/1512:55 pmSJC - YYZ
1 stop8h 04mDelta
Tue 1/1312:10 pmYYZ - SJC
2 stops13h 45mDelta
Deal found 12/3$449
This Delta deal was found by Cheapflights users on 12/4. 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 12/175:45 amSJC - YYZ
2 stops15h 14mDelta
Sat 1/107:40 amYYZ - SJC
2 stops13h 00mDelta
Deal found 12/4$452
This Delta deal was found by Cheapflights users on 12/2. 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 1/612:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 12/2$453
This Air Canada deal was found by Cheapflights users on 12/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:45 amSJC - YOW
2 stops22h 41mAir Canada
Wed 12/1710:20 amYOW - SJC
2 stops14h 07mAir Canada
Deal found 12/3$700

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 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$270
(Kiwi.com)

One-way from

$102
(Trip.com)

Popular in

November

Cheapest in

March

Average price

$662
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. 21% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 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 4, 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 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

$327

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Sat 1/17

4:00 pm-5:12 pm

2 stops22h 12m

Ottawa

Tue 1/20

7:27 pm-8:56 pm

2 stops28h 29m

$378

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 5/14

7:15 am-10:00 pm

1 stop11h 45m

Toronto Pearson Intl

Mon 5/18

1:30 pm-10:53 pm

1 stop12h 23m

$390

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 12/15

6:35 am-9:58 pm

1 stop12h 23m

Toronto Pearson Intl

Tue 1/13

12:21 pm-9:20 pm

1 stop11h 59m

$439

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 12/16

10:25 pm-11:07 am

1 stop9h 42m

Toronto Pearson Intl

Sat 1/10

6:10 am-12:56 pm

1 stop9h 46m

$439

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 12/16

10:25 pm-11:07 am

1 stop9h 42m

Toronto Pearson Intl

Fri 1/9

6:10 am-12:56 pm

1 stop9h 46m

$439

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 12/15

12:55 pm-11:59 pm

1 stop8h 04m

Toronto Pearson Intl

Sat 1/10

6:10 am-12:56 pm

1 stop9h 46m

$439

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 12/25

3:30 pm-8:58 am

2 stops14h 28m

Toronto Pearson Intl

Sun 1/11

6:00 am-9:28 pm

2 stops18h 28m

$440

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 4/30

6:30 am-6:25 pm

1 stop8h 55m

Toronto Pearson Intl

Sun 5/3

12:30 pm-8:53 pm

1 stop11h 23m

$444

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 12/16

12:55 pm-11:59 pm

1 stop8h 04m

Toronto Pearson Intl

Thu 1/8

7:50 am-9:28 pm

2 stops16h 38m

$449

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

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 December 4, 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 4, 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
8,011 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Food

7.3

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Food

7.3

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
9,063 reviews
Delta
7.9
Good
8,011 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Food

7.3

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
11,043 reviews
Delta
7.9
Good
8,011 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Food

7.3

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
10,500 reviews
Delta
7.9
Good
8,011 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Food

7.3

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 11h 45m. Fly via Alaska Airlines, United Airlines, or Delta 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 American Airlines and United 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 - Toronto Island 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.

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 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$207Average$490FlexibilityNo 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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