Find flights
When to book
Airlines
FAQs

Cheap flights from San Jose to Ontario from C$ 173

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 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — YYZ
4 May — 11 May1
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 April 2025.

Round-trip from

C$ 355

One-way from

C$ 173

Popular in

December

Cheapest in

September

Average price

C$ 642
27/5-3/6
  • 27/5-3/6
  • 3 total stops
  • 50h 25m total
  • San Jose to Ontario
Search Deals
31/5
  • 31/5
  • 2 total stops
  • 27h 30m total
  • San Jose to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 April 2025.

Tue 27/54:28 p.m.SJC - YYZ
1 stop21h 52mMultiple Airlines
Tue 3/62:00 p.m.YYZ - SJC
2 stops28h 33mMultiple Airlines
Deal found 27/4C$ 355
Tue 17/610:59 a.m.SJC - YHM
2 stops34h 42mMultiple Airlines
Tue 24/66:00 a.m.YHM - SJC
3 stops20h 34mMultiple Airlines
Deal found 28/4C$ 443
Wed 28/512:48 p.m.SJC - YYZ
2 stops18h 37mAmerican Airlines
Thu 29/51:29 p.m.YYZ - SJC
1 stop11h 15mAmerican Airlines
Deal found 28/4C$ 453
Thu 12/67:00 p.m.SJC - YOW
1 stop21h 55mMultiple Airlines
Sun 15/63:45 p.m.YOW - SJC
2 stops24h 38mMultiple Airlines
Deal found 27/4C$ 470
Sat 7/65:55 a.m.SJC - YYZ
1 stop7h 45mDelta
Wed 11/66:30 a.m.YYZ - SJC
1 stop9h 13mDelta
Deal found 28/4C$ 473
Sun 11/54:33 p.m.SJC - YUL
3 stops29h 04mMultiple Airlines
Wed 14/56:45 a.m.YUL - SJC
3 stops30h 20mMultiple Airlines
Deal found 28/4C$ 475
Wed 28/57:00 a.m.SJC - YYZ
2 stops9h 37mUnited Airlines
Wed 4/62:45 p.m.YYZ - SJC
1 stop10h 54mUnited Airlines
Deal found 27/4C$ 479
Sun 11/58:30 a.m.SJC - YUL
1 stop11h 56mAir Canada
Sat 17/54:05 p.m.YUL - SJC
1 stop8h 20mAir Canada
Deal found 27/4C$ 510
Mon 26/56:26 p.m.SJC - YYZ
2 stops16h 16mAir Canada
Sat 31/59:00 a.m.YYZ - SJC
2 stops14h 50mAir Canada
Deal found 28/4C$ 546
Wed 28/56:25 a.m.SJC - YUL
1 stop8h 15mDelta
Sun 1/66:15 a.m.YUL - SJC
2 stops12h 57mDelta
Deal found 27/4C$ 576
Mon 26/51:38 p.m.SJC - YTZ
3 stops26h 49mMultiple Airlines
Sat 31/511:00 a.m.YTZ - SJC
2 stops15h 29mMultiple Airlines
Deal found 28/4C$ 595
Wed 18/69:00 a.m.SJC - YYZ
2 stops12h 44mWestJet
Sun 22/67:45 p.m.YYZ - SJC
1 stop29h 59mWestJet
Deal found 28/4C$ 601

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 April 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 27/5

4:28 p.m.-5:20 p.m.

1 stop21h 52m

Toronto Pearson Intl

Tue 3/6

2:00 p.m.-3:33 p.m.

2 stops28h 33m

C$ 355

San JoseHamilton

SJC - YHM

SJCYHM

San Jose

Tue 17/6

10:59 a.m.-12:41 a.m.

2 stops34h 42m

Hamilton

Tue 24/6

6:00 a.m.-11:34 p.m.

3 stops20h 34m

C$ 443

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 28/5

12:48 p.m.-10:25 a.m.

2 stops18h 37m

Toronto Pearson Intl

Thu 29/5

1:29 p.m.-9:44 p.m.

1 stop11h 15m

C$ 453

San JoseOttawa

SJC - YOW

SJCYOW

San Jose

Thu 12/6

7:00 p.m.-7:55 p.m.

1 stop21h 55m

Ottawa

Sun 15/6

3:45 p.m.-1:23 p.m.

2 stops24h 38m

C$ 470

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sat 7/6

5:55 a.m.-4:40 p.m.

1 stop7h 45m

Toronto Pearson Intl

Tue 10/6

1:28 p.m.-7:55 p.m.

1 stop9h 27m

C$ 473

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Sun 11/5

4:33 p.m.-12:37 a.m.

3 stops29h 04m

Montreal Pierre Elliott Trudeau Intl

Wed 14/5

6:45 a.m.-10:05 a.m.

3 stops30h 20m

C$ 475

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 28/5

7:00 a.m.-7:37 p.m.

2 stops9h 37m

Toronto Pearson Intl

Wed 4/6

2:45 p.m.-10:39 p.m.

1 stop10h 54m

C$ 479

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Sun 11/5

8:30 a.m.-11:26 p.m.

1 stop11h 56m

Montreal Pierre Elliott Trudeau Intl

Sat 17/5

4:05 p.m.-9:25 p.m.

1 stop8h 20m

C$ 510

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 26/5

6:26 p.m.-1:42 p.m.

2 stops16h 16m

Toronto Pearson Intl

Sat 31/5

9:00 a.m.-8:50 p.m.

2 stops14h 50m

C$ 546

San JoseMontreal

SJC - YUL

SJCYUL

San Jose

Wed 28/5

6:25 a.m.-5:40 p.m.

1 stop8h 15m

Montreal Pierre Elliott Trudeau Intl

Sun 1/6

6:15 a.m.-4:12 p.m.

2 stops12h 57m

C$ 576

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/4

Showing 1-10 of 41 results
1
2
3
...
5

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 April 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 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 April 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from San Jose to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

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
9,949 reviews
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

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
7,929 reviews
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

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
9,949 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

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
2,823 reviews
Alaska Airlines
8.0
Very good
9,949 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

Crew

8.5

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?

    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 Delta. According to our data, you can fly for as low as C$ 198. Users have also found prices from C$ 212 and C$ 241 on United Airlines and American Airlines, 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 - Toronto Island, 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Jose to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Vancouver Intl flights
San Francisco to Pearson Intl flights
Los Angeles to Pearson Intl flights
San Francisco to Vancouver Intl flights
San Diego to Vancouver Intl flights
San Francisco to Pierre Elliott Trudeau Intl flights
Sacramento to Vancouver Intl flights
Los Angeles to Calgary flights
Los Angeles to Pierre Elliott Trudeau Intl flights
Santa Ana to Vancouver Intl flights
San Francisco to Calgary flights
Ontario to Vancouver Intl flights
San Diego to Pearson Intl flights
Oakland to Pearson Intl flights
San Jose to Pearson Intl flights
San Francisco to Abbotsford flights
San Jose to Vancouver Intl flights
Los Angeles to Abbotsford flights
Las Vegas to Pearson Intl flights
San Diego to Calgary flights
Ontario to Pearson Intl flights
Oakland to Vancouver Intl flights
Los Angeles to Toronto Island flights
San Francisco to Toronto Island flights
Las Vegas to Vancouver Intl flights
Los Angeles to Edmonton flights
Ontario to Calgary flights
Las Vegas to Calgary flights
Burbank to Vancouver Intl flights
Ontario to Pierre Elliott Trudeau Intl flights
Sacramento to Pearson Intl flights
Santa Ana to Calgary flights
San Diego to Pierre Elliott Trudeau Intl flights
Santa Ana to Pearson Intl flights
San Francisco to Edmonton flights
San Jose to Calgary flights
Las Vegas to Pierre Elliott Trudeau Intl flights
Los Angeles to Region of Waterloo Intl flights
Fresno to Vancouver Intl flights
San Francisco to Hamilton flights
Palm Springs to Vancouver Intl flights
Burbank to Pearson Intl flights
Los Angeles to Québec City flights
San Francisco to Ottawa flights
San Jose to Pierre Elliott Trudeau Intl flights
Los Angeles to Halifax flights
Sacramento to Calgary flights

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 April 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 448AverageC$ 688FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.