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$143+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$332
(United Airlines)

One-way from

$143
(Delta)

Popular in

November

Cheapest in

March

Average price

$702
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. 20% potential increase in price ($129 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 November 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 November 20, 2025.

This Delta deal was found by Cheapflights users on 11/20. 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 12/185:45 amSJC - YYZ
2 stops14h 26mDelta
Wed 1/712:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 11/20$350
This Delta deal was found by Cheapflights users on 11/20. 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 12/185:45 amSJC - YYZ
2 stops14h 26mDelta
Tue 1/66:00 amYYZ - SJC
2 stops18h 20mDelta
Deal found 11/20$355
This Delta deal was found by Cheapflights users on 11/20. 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 12/185:45 amSJC - YYZ
2 stops14h 26mDelta
Thu 1/812:21 pmYYZ - SJC
1 stop11h 59mDelta
Deal found 11/20$375
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 12/183:27 pmSJC - YYZ
1 stop25h 28mMultiple Airlines
Thu 1/88:00 pmYYZ - SJC
1 stop25h 36mMultiple Airlines
Deal found 11/20$376
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 12/183:27 pmSJC - YYZ
1 stop25h 28mMultiple Airlines
Mon 1/58:00 pmYYZ - SJC
2 stops18h 11mMultiple Airlines
Deal found 11/20$385
This Kiwi.com deal was found by Cheapflights users on 11/20. 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.
Sun 12/217:48 pmSJC - YYZ
2 stops31h 59mMultiple Airlines
Thu 1/88:00 pmYYZ - SJC
1 stop25h 36mMultiple Airlines
Deal found 11/20$386
This Delta deal was found by Cheapflights users on 11/18. 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 12/185:45 amSJC - YYZ
2 stops14h 26mDelta
Thu 1/17:50 amYYZ - SJC
2 stops16h 14mDelta
Deal found 11/18$405
This Delta deal was found by Cheapflights users on 11/19. 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
Thu 12/1112:23 pmYYZ - SJC
1 stop13h 32mDelta
Deal found 11/19$415
This Delta deal was found by Cheapflights users on 11/20. 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 12/185:45 amSJC - YYZ
2 stops14h 26mDelta
Mon 1/510:05 amYYZ - SJC
2 stops14h 15mDelta
Deal found 11/20$416
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/88:45 amSJC - YYZ
2 stops10h 52mUnited Airlines
Thu 12/114:10 pmYYZ - SJC
1 stop8h 17mUnited Airlines
Deal found 11/19$420
This Delta deal was found by Cheapflights users on 11/19. 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 12/310:25 pmSJC - YYZ
1 stop9h 42mDelta
Wed 12/1712:23 pmYYZ - SJC
2 stops11h 13mDelta
Deal found 11/19$424
This Delta deal was found by Cheapflights users on 11/17. 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.
Thu 12/117:15 amSJC - YUL
2 stops13h 44mDelta
Thu 12/257:00 amYUL - SJC
2 stops15h 56mDelta
Deal found 11/17$502

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 November 20, 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 1/4

10:55 pm-4:12 pm

2 stops14h 17m

Toronto Pearson Intl

Wed 1/7

6:10 am-12:56 pm

1 stop9h 46m

$350

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 1/5

4:10 pm-2:14 pm

2 stops19h 04m

Toronto Pearson Intl

Wed 1/7

2:45 pm-1:39 pm

2 stops25h 54m

$355

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 12/18

5:45 am-11:11 pm

2 stops14h 26m

Toronto Pearson Intl

Wed 1/7

6:00 am-2:52 pm

2 stops11h 52m

$355

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 1/5

10:30 pm-4:02 pm

1 stop14h 32m

Toronto Pearson Intl

Mon 1/12

7:40 pm-1:39 pm

2 stops20h 59m

$362

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 3/10

10:55 pm-2:01 pm

1 stop12h 06m

Toronto Pearson Intl

Wed 3/11

4:10 pm-9:16 pm

1 stop8h 06m

$367

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Sat 1/24

4:00 pm-6:52 pm

2 stops23h 52m

Ottawa

Sun 2/8

5:11 pm-8:53 am

1 stop18h 42m

$372

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Sun 1/25

4:00 pm-6:52 pm

2 stops23h 52m

Ottawa

Sun 2/8

5:11 pm-8:53 am

1 stop18h 42m

$372

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Sun 1/25

4:00 pm-5:12 pm

2 stops22h 12m

Ottawa

Thu 2/5

7:27 pm-1:38 pm

2 stops21h 11m

$377

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Sat 1/24

4:00 pm-5:12 pm

2 stops22h 12m

Ottawa

Thu 2/5

7:27 pm-1:38 pm

2 stops21h 11m

$377

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Wed 1/28

8:40 am-9:18 pm

2 stops9h 38m

Ottawa

Sat 2/7

6:20 am-8:56 pm

2 stops17h 36m

$377

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

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 November 20, 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 November 20, 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
393 reviews

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
393 reviews
Porter Airlines
8.0
Very good
393 reviews

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Delta
7.9
Good
8,002 reviews
Porter Airlines
8.0
Very good
393 reviews

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,029 reviews
Porter Airlines
8.0
Very good
393 reviews

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
American Airlines
7.2
Good
11,045 reviews
Porter Airlines
8.0
Very good
393 reviews

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,462 reviews
Porter Airlines
8.0
Very good
393 reviews

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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 14h 17m. Fly via Delta, United Airlines, or WestJet 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 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 - Hamilton 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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$207Average$489FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$208Average$447FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$350Average$698FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$435Average$567FlexibilityNo cancel feeOn-time71%

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