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Cheap flights from Ontario to San Francisco Bay Area from C$ 169

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SFO
8 Mar — 15 Mar1
1 adult

Cheap flight deals from Ontario to San Francisco Bay Area

Keep the following information in mind while searching for Ontario to San Francisco Bay Area flight deals. Data was last updated 3 March 2025.

Round-trip from

C$ 275

One-way from

C$ 169

Popular in

July

Cheapest in

March

Average price

C$ 516
3/4-9/4
  • 3/4-9/4
  • 2 total stops
  • 34h 09m total
  • Ontario to San Francisco Bay Area
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21/4
  • 21/4
  • 1 total stop
  • 16h 37m total
  • Ontario to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
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Find flight deals from Ontario to San Francisco Bay Area

Cheapest flights from Ontario to San Francisco Bay Area
Explore the most affordable flight options available from Ontario to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 March 2025.

Thu 3/48:00 p.m.YYZ - OAK
1 stop24h 55mMultiple Airlines
Wed 9/46:29 p.m.OAK - YYZ
1 stop9h 14mMultiple Airlines
Deal found 2/3C$ 275
Tue 6/56:00 a.m.YHM - SFO
1 stop9h 05mWestJet
Sat 10/512:50 p.m.SFO - YHM
1 stop8h 51mWestJet
Deal found 3/3C$ 289
Wed 2/49:45 a.m.YYZ - SFO
Nonstop5h 54mMultiple Airlines
Wed 9/47:00 a.m.SFO - YYZ
1 stop20h 43mMultiple Airlines
Deal found 3/3C$ 351
Thu 20/34:30 p.m.YUL - SJC
2 stops27h 31mMultiple Airlines
Wed 26/35:34 p.m.SJC - YUL
2 stops12h 26mMultiple Airlines
Deal found 2/3C$ 353
Wed 2/76:00 a.m.YKF - SFO
2 stops10h 59mWestJet
Sun 6/712:50 p.m.SFO - YKF
1 stop8h 56mWestJet
Deal found 3/3C$ 357
Mon 17/36:45 a.m.YUL - SFO
1 stop8h 54mPorter Airlines
Tue 25/31:40 p.m.SFO - YUL
1 stop7h 55mPorter Airlines
Deal found 2/3C$ 360
Sat 19/76:45 a.m.YYZ - SFO
1 stop11h 03mWestJet
Sat 26/76:05 p.m.SFO - YYZ
1 stop9h 07mWestJet
Deal found 3/3C$ 362
Sat 22/36:15 a.m.YOW - SFO
1 stop9h 24mPorter Airlines
Wed 2/41:40 p.m.SFO - YOW
1 stop8h 00mPorter Airlines
Deal found 2/3C$ 363
Tue 8/76:00 a.m.YXU - SFO
2 stops10h 59mWestJet
Tue 15/77:30 a.m.SFO - YXU
1 stop8h 39mWestJet
Deal found 3/3C$ 364
Sat 3/56:45 a.m.YUL - SFO
2 stops32h 20mWestJet
Sat 10/512:50 p.m.SFO - YUL
1 stop8h 53mWestJet
Deal found 3/3C$ 367
Mon 12/56:15 a.m.YOW - SFO
2 stops18h 10mWestJet
Sun 7/92:45 p.m.SFO - YOW
2 stops13h 00mWestJet
Deal found 2/3C$ 367
Sat 29/33:20 p.m.YXU - SFO
1 stop9h 22mUnited Airlines
Tue 15/48:30 a.m.SFO - YXU
1 stop8h 49mUnited Airlines
Deal found 2/3C$ 372

Find flights from Ontario to San Francisco Bay Area within your budget

Customize your flight search to find flights from Ontario to San Francisco Bay Area 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 3 March 2025.

Fly from

Ontario

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 3/4

8:00 p.m.-5:55 p.m.

1 stop24h 55m

Oakland

Wed 9/4

6:29 p.m.-6:43 a.m.

1 stop9h 14m

C$ 275

HamiltonSan Francisco

YHM - SFO

YHMSFO

Hamilton

Tue 6/5

6:00 a.m.-12:05 p.m.

1 stop9h 05m

San Francisco

Sat 10/5

12:50 p.m.-12:41 a.m.

1 stop8h 51m

C$ 289

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

Sat 5/4

9:45 a.m.-12:39 p.m.

Nonstop5h 54m

San Francisco

Wed 9/4

7:00 a.m.-6:43 a.m.

1 stop20h 43m

C$ 351

MontrealSan Jose

YUL - SJC

YULSJC

Montreal Pierre Elliott Trudeau Intl

Thu 20/3

4:30 p.m.-5:01 p.m.

2 stops27h 31m

San Jose

Wed 26/3

5:34 p.m.-9:00 a.m.

2 stops12h 26m

C$ 353

TorontoSan Francisco

YKF - SFO

YKFSFO

Toronto Region of Waterloo Intl

Wed 2/7

6:00 a.m.-1:59 p.m.

2 stops10h 59m

San Francisco

Sun 6/7

12:50 p.m.-12:46 a.m.

1 stop8h 56m

C$ 357

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 17/3

6:45 a.m.-12:39 p.m.

1 stop8h 54m

San Francisco

Tue 25/3

1:40 p.m.-12:35 a.m.

1 stop7h 55m

C$ 360

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

Sat 19/7

6:45 a.m.-2:48 p.m.

1 stop11h 03m

San Francisco

Sat 26/7

6:05 p.m.-6:12 a.m.

1 stop9h 07m

C$ 362

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

Sat 22/3

6:15 a.m.-12:39 p.m.

1 stop9h 24m

San Francisco

Wed 2/4

1:40 p.m.-12:40 a.m.

1 stop8h 00m

C$ 363

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 8/7

6:00 a.m.-1:59 p.m.

2 stops10h 59m

San Francisco

Tue 15/7

7:30 a.m.-7:09 p.m.

1 stop8h 39m

C$ 364

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 3/5

6:45 a.m.-12:05 p.m.

2 stops32h 20m

San Francisco

Sat 10/5

12:50 p.m.-12:43 a.m.

1 stop8h 53m

C$ 367

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Ontario 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.

Travel insights for flights from Ontario to San Francisco Bay Area

Get recent, data-driven insights about flights from Ontario to San Francisco Bay Area including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Region of Ontario to San Francisco Bay Area?

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to San Francisco Bay Area (average of C$ 276). Flying from Region of Ontario to San Francisco Bay Area in June is currently the most expensive (average of C$ 379). 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 ON to XIH?

Find hourly flight availability from Ontario to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 March 2025.

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

Weekly flight availability from Region of Ontario to San Francisco Bay Area

Explore weekly flight availability from Ontario to San Francisco Bay Area. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 March 2025.

The most flights from CAON to zzXIH are scheduled on a Monday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

Rainfall in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco Bay Area ranges from 0.0 - 112.0 mm per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco Bay Area when rainfall is around 0.0 mm.

Temperature in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco Bay Area, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. 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 San Francisco Bay Area. Reviews last updated 3 March 2025.
See what other customers who have flown with Delta, Alaska Airlines and Porter Airlines from Ontario to San Francisco Bay Area have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,068 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,068 reviews
Delta
8.0
Very good
8,068 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Alaska Airlines
8.0
Very good
9,710 reviews
Delta
8.0
Very good
8,068 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Porter Airlines
7.9
Good
280 reviews
Delta
8.0
Very good
8,068 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
8,068 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Transat
7.8
Good
382 reviews
Delta
8.0
Very good
8,068 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Ontario to San Francisco Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    C$ 174 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Porter Airlines and Air Canada, with prices starting from C$ 188 and C$ 208, respectively.

  • Can I find deals for flights from Ontario to San Francisco Bay Area that include hotel bookings?

    Yes. In addition to deals on Ontario to San Francisco Bay Area flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to San Francisco Bay Area?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to San Francisco Bay Area.

  • Can I find deals for business class flights from Ontario to San Francisco Bay Area?

    Yes. Cheapflights offers flight deals from Ontario to San Francisco Bay Area 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 Region of Ontario to San Francisco Bay Area?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to San Francisco Bay Area (average of C$ 276). Flying from Region of Ontario to San Francisco Bay Area in June is currently the most expensive (average of C$ 379). 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

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Alternative routes for Ontario to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Ontario to San Francisco Bay Area

Discover the top 9 airlines that operate flights from Ontario to San Francisco Bay Area. 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 3 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 344AverageC$ 658FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 353AverageC$ 533FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 353AverageC$ 607FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 371AverageC$ 685FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 387AverageC$ 794FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 413AverageC$ 668FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Alaska AirlinesCheapestC$ 419AverageC$ 747FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Air TransatCheapestC$ 442AverageC$ 537FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJet EncoreCheapestC$ 674AverageC$ 741FlexibilityNo cancel feeOn-timeN/A
Search WestJet Encore flights

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How does Cheapflights help users find flights from Ontario to San Francisco Bay Area?

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Why should you use Cheapflights to find cheap flight tickets from Ontario to San Francisco Bay Area?

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Can Cheapflights find flights from Ontario to San Francisco Bay Area with no change fees?

Need flexible booking options for your flight to San Francisco Bay Area from Ontario? 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 Ontario to San Francisco Bay Area become cheaper?

Yes! Start tracking prices for Ontario to San Francisco Bay Area 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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