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Cheap flights from San Jose to Ontario from C$ 145

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
3 Aug — 10 Aug1
1 adult

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 29 July 2025.

Round-trip from

C$ 368

One-way from

C$ 145

Popular in

December

Cheapest in

May

Average price

C$ 671
19/8-28/8
  • 19/8-28/8
  • 3 total stops
  • 31h 59m total
  • San Jose to Ontario
Search Deals
15/9
  • 15/9
  • 3 total stops
  • 32h 06m total
  • San Jose to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 29 July 2025.

Tue 19/86:00 a.m.SJC - YYZ
2 stops21h 12mMultiple Airlines
Thu 28/89:45 a.m.YYZ - SJC
1 stop10h 47mMultiple Airlines
Deal found 27/7C$ 368
Wed 24/98:15 a.m.SJC - YOW
3 stops19h 30mMultiple Airlines
Sat 27/97:00 a.m.YOW - SJC
3 stops20h 24mMultiple Airlines
Deal found 27/7C$ 509
Wed 10/96:00 a.m.SJC - YUL
3 stops15h 37mMultiple Airlines
Wed 17/97:00 a.m.YUL - SJC
3 stops27h 20mMultiple Airlines
Deal found 27/7C$ 543
Wed 17/96:00 a.m.SJC - YHM
2 stops15h 40mMultiple Airlines
Mon 22/97:05 a.m.YHM - SJC
2 stops20h 19mMultiple Airlines
Deal found 29/7C$ 545
Fri 22/812:39 p.m.SJC - YTZ
2 stops26h 04mMultiple Airlines
Mon 25/88:30 a.m.YTZ - SJC
2 stops17h 00mMultiple Airlines
Deal found 28/7C$ 641
Tue 16/93:26 p.m.SJC - YUL
2 stops17h 34mDelta
Sat 20/910:57 a.m.YUL - SJC
2 stops24h 24mDelta
Deal found 27/7C$ 653
Mon 25/86:00 a.m.SJC - YXU
2 stops20h 14mMultiple Airlines
Mon 1/99:45 p.m.YXU - SJC
2 stops27h 45mMultiple Airlines
Deal found 27/7C$ 767
Sun 21/911:15 a.m.SJC - YOW
2 stops16h 30mDelta
Thu 25/97:50 a.m.YOW - SJC
2 stops18h 05mDelta
Deal found 27/7C$ 875
Tue 7/108:05 p.m.SJC - YHM
2 stops25h 35mWestJet
Tue 14/106:00 a.m.YHM - SJC
2 stops13h 15mWestJet
Deal found 27/7C$ 973
Fri 19/96:20 p.m.SJC - YOW
2 stops23h 33mAir Canada
Tue 23/99:55 p.m.YOW - SJC
2 stops22h 22mAir Canada
Deal found 28/7C$ 1,001
Mon 8/96:20 p.m.SJC - YXU
2 stops17h 57mUnited Airlines
Tue 16/96:10 a.m.YXU - SJC
2 stops18h 08mUnited Airlines
Deal found 27/7C$ 1,008
Fri 10/106:22 p.m.SJC - YOW
2 stops19h 44mUnited Airlines
Sat 11/107:29 p.m.YOW - SJC
2 stops17h 23mUnited Airlines
Deal found 28/7C$ 1,069

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 629,999 searches. Data last updated 29 July 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 19/8

6:00 a.m.-6:12 a.m.

2 stops21h 12m

Toronto Pearson Intl

Thu 28/8

9:45 a.m.-5:32 p.m.

1 stop10h 47m

C$ 368

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Wed 24/9

8:15 a.m.-6:45 a.m.

3 stops19h 30m

Ottawa

Sat 27/9

7:00 a.m.-12:24 a.m.

3 stops20h 24m

C$ 509

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Wed 10/9

6:00 a.m.-12:37 a.m.

3 stops15h 37m

Montreal Pierre Elliott Trudeau Intl

Wed 17/9

7:00 a.m.-7:20 a.m.

3 stops27h 20m

C$ 543

San JoseHamilton

SJC - YHM

SJCYHM

San Jose

Wed 17/9

6:00 a.m.-12:40 a.m.

2 stops15h 40m

Hamilton

Mon 22/9

7:05 a.m.-12:24 a.m.

2 stops20h 19m

C$ 545

San JoseToronto

SJC - YTZ

SJCYTZ

San Jose

Fri 22/8

12:39 p.m.-5:43 p.m.

2 stops26h 04m

Toronto Island

Mon 25/8

8:30 a.m.-10:30 p.m.

2 stops17h 00m

C$ 641

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Tue 16/9

3:26 p.m.-12:00 p.m.

2 stops17h 34m

Montreal Pierre Elliott Trudeau Intl

Sat 20/9

10:57 a.m.-8:21 a.m.

2 stops24h 24m

C$ 653

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Mon 25/8

6:00 a.m.-5:14 a.m.

2 stops20h 14m

London

Mon 1/9

9:45 p.m.-10:30 p.m.

2 stops27h 45m

C$ 767

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Sun 21/9

11:15 a.m.-6:45 a.m.

2 stops16h 30m

Ottawa

Thu 25/9

7:50 a.m.-10:55 p.m.

2 stops18h 05m

C$ 875

San JoseHamilton

SJC - YHM

SJCYHM

San Jose

Tue 7/10

8:05 p.m.-12:40 a.m.

2 stops25h 35m

Hamilton

Tue 14/10

6:00 a.m.-4:15 p.m.

2 stops13h 15m

C$ 973

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Fri 19/9

6:20 p.m.-8:53 p.m.

2 stops23h 33m

Ottawa

Tue 23/9

9:55 p.m.-5:17 p.m.

2 stops22h 22m

C$ 1,001

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/7

Showing 1-10 of 31 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 C$ 167). Flying from San Jose to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 29 July 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.

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 29 July 2025.
Check out reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from San Jose to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
WestJet
7.2
Good
2,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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?

    For a flight from San Jose to Ontario, you will be flying from San Jose. San Jose (SJC) is just 4.6 km from the centre of the city.

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

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as C$ 254. Users have also found prices from C$ 284 and C$ 306 on American Airlines and Delta, respectively.

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

    While some choose either San Jose - Montreal Pierre Elliott Trudeau Intl or San Jose - Hamilton, San Jose - Toronto Pearson Intl is the most popular route from San Jose to Region of Ontario.

  • 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 C$ 167). Flying from San Jose to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 airline flying from San Jose to Ontario

Discover the top airline 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 629,999 searches. Data last updated 29 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 258AverageC$ 476FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from San Jose to Ontario?

When you search for this flight from San Jose to Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from San Jose to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from San Jose.

Can Cheapflights find flights from San Jose to Ontario with no change fees?

Need flexible booking options for your flight to Ontario from San Jose? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from San Jose to Ontario become cheaper?

Yes! Start tracking prices for San Jose to Ontario flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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