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$127+ Cheap flights from San Francisco (SFO) 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YYZ
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from San Francisco to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Ontario (CAON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

Find flight deals from San Francisco to Ontario

Cheapest flights from San Francisco to Ontario
Explore the most affordable flight options available from San Francisco to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This Kiwi.com deal was found by Cheapflights users on 11/19. 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 12/97:00 pmSFO - YYZ
1 stop17h 16mMultiple Airlines
Wed 12/118:00 pmYYZ - SFO
1 stop14h 14mMultiple Airlines
Deal found 11/19$250
This Trip.com deal was found by Cheapflights users on 11/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/41:30 pmSFO - YUL
1 stop7h 58mPorter Airlines
Mon 12/96:45 amYUL - SFO
1 stop8h 39mPorter Airlines
Deal found 11/20$268
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 12/113:18 pmSFO - YUL
1 stop22h 17mMultiple Airlines
Mon 12/161:30 pmYUL - SFO
2 stops21h 22mMultiple Airlines
Deal found 11/19$284
This Mytrip deal was found by Cheapflights users on 11/19. 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 12/81:30 pmSFO - YOW
1 stop8h 12mMultiple Airlines
Thu 12/128:10 pmYOW - SFO
2 stops19h 55mMultiple Airlines
Deal found 11/19$360
This oojo deal was found by Cheapflights users on 11/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/271:30 pmSFO - YOW
1 stop8h 12mPorter Airlines
Tue 12/106:25 amYOW - SFO
1 stop8h 59mPorter Airlines
Deal found 11/20$363
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 12/41:30 pmSFO - YYZ
Nonstop5h 02mPorter Airlines
Wed 12/119:35 amYYZ - SFO
Nonstop5h 49mPorter Airlines
Deal found 11/19$365
This Flightnetwork deal was found by Cheapflights users on 11/20. 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.
Wed 12/46:15 amSFO - YTZ
2 stops11h 28mAir Canada
Wed 12/113:25 pmYTZ - SFO
1 stop9h 26mAir Canada
Deal found 11/20$406
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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.
Thu 12/57:00 amSFO - YYZ
1 stop28h 55mAlaska Airlines
Tue 12/104:20 pmYYZ - SFO
2 stops20h 20mAlaska Airlines
Deal found 11/19$408
This Air Canada deal was found by Cheapflights users on 11/18. 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.
Fri 12/138:22 pmSFO - YQG
2 stops18h 46mAir Canada
Sun 12/156:45 pmYQG - SFO
1 stop17h 49mAir Canada
Deal found 11/18$415
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Wed 12/115:20 pmSFO - YUL
2 stops14h 12mUnited Airlines
Mon 12/168:05 amYUL - SFO
2 stops16h 42mUnited Airlines
Deal found 11/19$483
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/1610:50 pmSFO - YOW
1 stop15h 16mUnited Airlines
Sun 12/295:30 amYOW - SFO
1 stop8h 22mUnited Airlines
Deal found 11/19$553
This Mytrip deal was found by Cheapflights users on 11/19. 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.
Fri 12/131:55 pmSFO - YKF
1 stop8h 21mWestJet
Tue 12/176:30 amYKF - SFO
1 stop9h 35mWestJet
Deal found 11/19$559

Find flights from San Francisco to Ontario within your budget

Customize your flight search to find flights from San Francisco 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Mon 12/9

7:00 pm-3:16 pm

1 stop17h 16m

Toronto Pearson Intl

Wed 12/11

8:00 pm-7:14 am

1 stop14h 14m

$250

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Wed 12/4

1:30 pm-12:28 am

1 stop7h 58m

Montreal Pierre Elliott Trudeau Intl

Mon 12/9

6:45 am-12:24 pm

1 stop8h 39m

$268

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Wed 12/11

3:18 pm-4:35 pm

1 stop22h 17m

Montreal Pierre Elliott Trudeau Intl

Mon 12/16

1:30 pm-7:52 am

2 stops21h 22m

$284

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 1/10

1:55 pm-1:16 am

1 stop8h 21m

Toronto Region of Waterloo Intl

Thu 1/16

6:30 am-1:05 pm

1 stop9h 35m

$303

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Fri 1/10

1:55 pm-6:00 am

2 stops13h 05m

Toronto Pearson Intl

Thu 1/16

6:30 am-1:05 pm

1 stop9h 35m

$304

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Sun 12/8

1:30 pm-12:42 am

1 stop8h 12m

Ottawa

Thu 12/12

8:10 pm-1:05 pm

2 stops19h 55m

$360

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Wed 12/4

1:30 pm-9:32 pm

Nonstop5h 02m

Toronto Pearson Intl

Wed 12/11

9:35 am-12:24 pm

Nonstop5h 49m

$365

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Fri 1/10

6:43 pm-3:05 pm

2 stops17h 22m

Toronto Pearson Intl

Mon 1/13

4:20 pm-9:36 pm

2 stops32h 16m

$370

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Fri 1/10

1:55 pm-5:33 am

2 stops12h 38m

Ottawa

Tue 1/14

8:10 pm-1:05 pm

2 stops43h 55m

$379

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Tue 1/7

11:05 pm-9:37 pm

2 stops19h 32m

Ottawa

Wed 1/15

2:10 pm-9:42 pm

1 stop10h 32m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 57 results
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Best time to book a flight from San Francisco to Ontario

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

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

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

Currently, January is the cheapest month in which you can book a flight from San Francisco to Region of Ontario (average of $242). Flying from San Francisco 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 SFO to ON?

Find hourly flight availability from San Francisco 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 20, 2024.

When flying from San Francisco 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.

Weekly flight availability from San Francisco to Region of Ontario

Explore weekly flight availability from San Francisco to Ontario. 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 November 20, 2024.

The most flights from SFO to CAON are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).

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 November 20, 2024.
Peruse reviews from past customers who have flown with Alaska Airlines, WestJet and Porter Airlines from San Francisco to Ontario to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,461 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Alaska Airlines
8.0
Very good
9,461 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Delta
8.0
Very good
8,756 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Porter Airlines
7.8
Good
288 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Air Transat
7.8
Good
389 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

SWISS
7.6
Good
1,637 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Could not watch a movie, asked for help. Could not get extra cookies

Related info for your journey

Find useful and relevant information for your journey from San Francisco 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 Francisco to Ontario?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Ontario. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

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

    To fly one-way, consider booking your trip with Porter Airlines, which is currently one of the cheapest options available, starting at $127. WestJet flights start at $137 while deals on Air Canada start at $168 one-way.

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

    Most travelers choose San Francisco - Toronto Pearson Intl, San Francisco - Montreal Pierre Elliott Trudeau Intl or San Francisco - Toronto Island when deciding on the best route from San Francisco to Region of Ontario.

  • What are the most reliable airlines from San Francisco to Region of Ontario?

    Before booking your flight to Region of Ontario from San Francisco, check out the most reliable airlines to get you to your destination on time: Austrian Airlines (87%), Singapore Airlines (87%), United Airlines( 86%).

  • What are the cheapest flights from San Francisco to Region of Ontario?

    Looking for the cheapest flight from San Francisco to Region of Ontario? While on average our users pay $1,167, our data indicates the cheapest price to be $140. The most popular route (San Francisco - Toronto Pearson Intl), is priced around $247.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from San Francisco to Region of Ontario (average of $242). Flying from San Francisco 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.

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Alternative routes for San Francisco to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from San Francisco to Ontario

Discover the top 8 airlines that operate flights from San Francisco 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$176Average$465FlexibilityNo cancel feeOn-time52%
DeltaCheapest$187Average$551FlexibilityNo cancel feeOn-timeN/A
Lynx AirCheapest$194Average$236FlexibilityNo cancel feeOn-timeN/A
Air TransatCheapest$196Average$408FlexibilityNo cancel feeOn-time50%
Air CanadaCheapest$207Average$643FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$218Average$336FlexibilityNo cancel feeOn-time71%
WestJetCheapest$227Average$486FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$243Average$626FlexibilityNo cancel feeOn-time69%
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