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$112+ Cheap flights from San Jose (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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
Apr 30 — May 71
Wed 4/30
Wed 5/7
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 April 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$265
(Mytrip)

One-way from

$112
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$463
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. 5% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 25, 2025.

This Mytrip deal was found by Cheapflights users on 4/24. 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.
Tue 6/311:00 amSJC - YYZ
2 stops34h 24mMultiple Airlines
Tue 6/1010:40 amYYZ - SJC
2 stops15h 49mMultiple Airlines
Deal found 4/24$265
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/56:45 pmSJC - YYZ
1 stop15h 11mUnited Airlines
Tue 5/64:30 pmYYZ - SJC
1 stop9h 24mUnited Airlines
Deal found 4/23$317
This American Airlines deal was found by Cheapflights users on 4/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/612:10 pmSJC - YYZ
1 stop7h 37mAmerican Airlines
Sat 5/247:30 amYYZ - SJC
2 stops17h 14mAmerican Airlines
Deal found 4/25$340
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/71:27 pmSJC - YYZ
1 stop6h 47mDelta
Sat 5/245:50 pmYYZ - SJC
1 stop7h 30mDelta
Deal found 4/25$341
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 6/116:00 amSJC - YOW
1 stop10h 55mMultiple Airlines
Sun 6/153:45 pmYOW - SJC
2 stops24h 38mMultiple Airlines
Deal found 4/25$346
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Fri 5/96:45 pmSJC - YUL
2 stops14h 15mUnited Airlines
Fri 5/168:05 amYUL - SJC
1 stop12h 35mUnited Airlines
Deal found 4/24$361
This Delta deal was found by Cheapflights users on 4/24. 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 11/2211:00 pmSJC - YUL
1 stop10h 15mDelta
Wed 11/264:55 pmYUL - SJC
1 stop8h 11mDelta
Deal found 4/24$365
This Mytrip deal was found by Cheapflights users on 4/24. 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 5/86:00 amSJC - YUL
3 stops15h 37mMultiple Airlines
Sun 5/116:45 amYUL - SJC
3 stops30h 20mMultiple Airlines
Deal found 4/24$366
This Flightnetwork deal was found by Cheapflights users on 4/25. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:45 pmSJC - YUL
1 stop17h 41mAir Canada
Thu 5/158:05 amYUL - SJC
1 stop12h 41mAir Canada
Deal found 4/25$369
This Air Canada deal was found by Cheapflights users on 4/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/56:45 pmSJC - YYZ
1 stop15h 11mAir Canada
Wed 5/214:18 pmYYZ - SJC
1 stop8h 07mAir Canada
Deal found 4/25$385
This Mytrip deal was found by Cheapflights users on 4/24. 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.
Sun 5/2511:00 amSJC - YTZ
2 stops18h 30mMultiple Airlines
Fri 5/307:00 amYTZ - SJC
2 stops30h 05mMultiple Airlines
Deal found 4/24$408
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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 5/251:31 pmSJC - YYZ
1 stop22h 29mAlaska Airlines
Fri 5/304:45 pmYYZ - SJC
1 stop8h 53mAlaska Airlines
Deal found 4/24$410

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 April 25, 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

Tue 6/3

11:00 am-12:24 am

2 stops34h 24m

Toronto Pearson Intl

Tue 6/10

10:40 am-11:29 pm

2 stops15h 49m

$265

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 5/5

6:45 pm-12:56 pm

1 stop15h 11m

Toronto Pearson Intl

Tue 5/6

4:30 pm-10:54 pm

1 stop9h 24m

$317

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Tue 5/6

12:10 pm-10:47 pm

1 stop7h 37m

Toronto Pearson Intl

Sat 5/24

7:30 am-9:44 pm

2 stops17h 14m

$340

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 5/7

1:27 pm-11:14 pm

1 stop6h 47m

Toronto Pearson Intl

Sat 5/24

5:50 pm-10:20 pm

1 stop7h 30m

$341

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Wed 6/11

6:00 am-7:55 pm

1 stop10h 55m

Ottawa

Sun 6/15

3:45 pm-1:23 pm

2 stops24h 38m

$346

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Fri 5/9

6:45 pm-3:26 pm

1 stop17h 41m

Montreal Pierre Elliott Trudeau Intl

Fri 5/16

8:05 am-9:25 pm

1 stop16h 20m

$361

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Fri 9/19

11:00 pm-12:15 pm

1 stop10h 15m

Montreal Pierre Elliott Trudeau Intl

Tue 9/23

12:45 pm-8:04 pm

1 stop10h 19m

$365

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Thu 5/8

6:00 am-12:37 am

3 stops15h 37m

Montreal Pierre Elliott Trudeau Intl

Sun 5/11

6:45 am-10:05 am

3 stops30h 20m

$366

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Fri 5/9

6:45 pm-3:26 pm

1 stop17h 41m

Montreal Pierre Elliott Trudeau Intl

Thu 5/15

8:05 am-5:46 pm

1 stop12h 41m

$369

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 5/5

6:45 pm-12:56 pm

1 stop15h 11m

Toronto Pearson Intl

Wed 5/21

4:18 pm-9:25 pm

1 stop8h 07m

$385

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 44 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 to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from San Jose to Region of Ontario (average of $243). Flying from San Jose to Region of Ontario in July is currently the most expensive (average of $359). 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 April 25, 2025.

When flying from San Jose to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 April 25, 2025.
Read through reviews of airlines operating flights from San Jose to Ontario, such as Alaska Airlines, Delta and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,927 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,927 reviews
Alaska Airlines
8.0
Very good
9,927 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,927 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,685 reviews
Alaska Airlines
8.0
Very good
9,927 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,927 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
WestJet
7.2
Good
2,818 reviews
Alaska Airlines
8.0
Very good
9,927 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

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

    One-way options have recently been found by users for as low as $142 on United Airlines. Other airlines that offer cheap prices include Delta from $143 and American Airlines from $179 one-way.

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

    When deciding which route to take from San Jose 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 to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from San Jose to Region of Ontario (average of $243). Flying from San Jose to Region of Ontario in July is currently the most expensive (average of $359). 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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Alternative routes for San Jose to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$194Average$532FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$297Average$716FlexibilityNo cancel feeOn-time69%
DeltaCheapest$343Average$477FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$517Average$585FlexibilityNo cancel feeOn-time71%

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