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$152+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
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 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$311
(Kiwi.com)

One-way from

$152
(Kiwi.com)

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 10, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:40 pmSJC - YYZ
1 stop27h 20mMultiple Airlines
Fri 12/129:45 amYYZ - SJC
1 stop12h 28mMultiple Airlines
Deal found 11/9$311
This Kiwi.com deal was found by Cheapflights users on 11/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:40 pmSJC - YYZ
1 stop24h 15mMultiple Airlines
Thu 12/1112:30 pmYYZ - SJC
2 stops33h 43mMultiple Airlines
Deal found 11/9$319
This SmartFares deal was found by Cheapflights users on 11/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:50 pmSJC - YYZ
1 stop16h 45mAlaska Airlines
Mon 12/154:45 pmYYZ - SJC
1 stop9h 14mAlaska Airlines
Deal found 11/10$350
This Kiwi.com deal was found by Cheapflights users on 11/8. 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.
Mon 12/14:40 pmSJC - YYZ
1 stop24h 15mMultiple Airlines
Fri 12/59:45 amYYZ - SJC
1 stop12h 28mMultiple Airlines
Deal found 11/8$352
This Expedia deal was found by Cheapflights users on 11/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:50 pmSJC - YYZ
1 stop16h 45mMultiple Airlines
Mon 12/159:35 amYYZ - SJC
1 stop12h 01mMultiple Airlines
Deal found 11/9$366
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:18 amSJC - YYZ
1 stop30h 17mAlaska Airlines
Sat 12/134:45 pmYYZ - SJC
1 stop9h 14mAlaska Airlines
Deal found 11/10$376
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:18 amSJC - YYZ
1 stop30h 17mAlaska Airlines
Mon 12/84:45 pmYYZ - SJC
1 stop9h 14mAlaska Airlines
Deal found 11/9$386
This Mytrip deal was found by Cheapflights users on 11/7. 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 12/311:40 amSJC - YTZ
3 stops27h 03mMultiple Airlines
Mon 12/82:05 pmYTZ - SJC
3 stops26h 11mMultiple Airlines
Deal found 11/7$637
This SmartFares deal was found by Cheapflights users on 11/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:45 amSJC - YOW
2 stops9h 33mAir Canada
Thu 12/115:00 amYOW - SJC
2 stops11h 32mAir Canada
Deal found 11/10$637
This Delta deal was found by Cheapflights users on 11/9. 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 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 12/257:00 amYUL - SJC
2 stops15h 56mDelta
Deal found 11/9$654
This Delta deal was found by Cheapflights users on 11/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:15 amSJC - YUL
2 stops13h 32mDelta
Sun 12/147:10 amYUL - SJC
2 stops18h 02mDelta
Deal found 11/9$662
This United Airlines deal was found by Cheapflights users on 11/10. 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.
Sun 11/236:40 pmSJC - YOW
2 stops18h 52mUnited Airlines
Wed 11/265:14 pmYOW - SJC
1 stop8h 14mUnited Airlines
Deal found 11/10$672

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 10, 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

Fri 1/9

6:02 pm-3:35 pm

1 stop18h 33m

Toronto Pearson Intl

Tue 1/13

4:45 pm-2:42 pm

1 stop24h 57m

$362

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 1/27

9:05 am-3:35 pm

1 stop27h 30m

Toronto Pearson Intl

Sat 1/31

4:45 pm-9:48 am

1 stop20h 03m

$362

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 1/29

11:00 am-3:35 pm

1 stop25h 35m

Toronto Pearson Intl

Wed 2/4

4:45 pm-9:48 am

1 stop20h 03m

$372

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 1/31

3:36 pm-3:35 pm

1 stop20h 59m

Toronto Pearson Intl

Wed 2/4

4:45 pm-9:48 am

1 stop20h 03m

$372

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 2/24

3:55 pm-2:01 pm

2 stops19h 06m

Toronto Pearson Intl

Wed 2/25

4:10 pm-9:06 pm

1 stop7h 56m

$376

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 1/29

9:05 am-3:35 pm

1 stop27h 30m

Toronto Pearson Intl

Mon 2/2

4:45 pm-9:48 am

1 stop20h 03m

$383

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Thu 1/8

10:30 pm-11:08 am

1 stop9h 38m

Toronto Pearson Intl

Tue 1/13

12:21 pm-9:20 pm

1 stop11h 59m

$390

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 1/28

6:15 am-3:59 pm

1 stop6h 44m

Toronto Pearson Intl

Sun 2/1

6:10 am-12:56 pm

1 stop9h 46m

$390

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 12/3

6:35 am-9:58 pm

1 stop12h 23m

Toronto Pearson Intl

Mon 12/8

12:23 pm-10:55 pm

1 stop13h 32m

$390

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 2/2

4:00 pm-9:36 am

2 stops14h 36m

Toronto Pearson Intl

Tue 2/3

4:10 pm-8:56 pm

1 stop7h 46m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

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 November 10, 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 November 10, 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
388 reviews

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Porter Airlines
8.0
Very good
388 reviews
Porter Airlines
8.0
Very good
388 reviews

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Delta
7.9
Good
8,004 reviews
Porter Airlines
8.0
Very good
388 reviews

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
United Airlines
7.4
Good
9,011 reviews
Porter Airlines
8.0
Very good
388 reviews

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
American Airlines
7.2
Good
11,047 reviews
Porter Airlines
8.0
Very good
388 reviews

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Air Canada
7.1
Good
10,429 reviews
Porter Airlines
8.0
Very good
388 reviews

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.

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 15h 02m. 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 2517 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 Alaska Airlines, with whom users have recently found tickets for as low as $153. However, be on the lookout for offers from Delta 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 - 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 $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.

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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 10, 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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