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$124+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YYZ
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
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 December 18, 2024.

Round-trip from

$217
(Kiwi.com)

One-way from

$124
(Justfly.com)
From San Francisco to Ontario
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One-way flight from San Francisco to Ontario
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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 December 18, 2024.

This United Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/247:10 pmSFO - YOW
2 stops20h 44mUnited Airlines
Wed 1/89:45 amYOW - SFO
1 stop14h 13mUnited Airlines
Deal found 12/17$355
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Tue 12/2410:29 pmSFO - YYZ
2 stops19h 44mMultiple Airlines
Sun 1/128:00 pmYYZ - SFO
1 stop14h 14mMultiple Airlines
Deal found 12/17$370
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/302:29 pmSFO - YUL
2 stops23h 06mMultiple Airlines
Fri 1/106:45 amYUL - SFO
1 stop8h 39mMultiple Airlines
Deal found 12/16$378
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/301:40 pmSFO - YUL
1 stop7h 48mPorter Airlines
Mon 1/136:45 amYUL - SFO
1 stop8h 39mPorter Airlines
Deal found 12/16$395
This Alaska Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/319:29 pmSFO - YYZ
1 stop14h 38mAlaska Airlines
Fri 1/104:20 pmYYZ - SFO
2 stops19h 21mAlaska Airlines
Deal found 12/17$399
This Air Canada deal was found by Cheapflights users on 12/17. 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.
Wed 12/254:25 pmSFO - YYZ
Nonstop4h 52mAir Canada
Tue 1/148:05 amYYZ - SFO
Nonstop5h 47mAir Canada
Deal found 12/17$443
This Air Canada deal was found by Cheapflights users on 12/16. 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 12/308:30 amSFO - YUL
Nonstop5h 28mAir Canada
Tue 1/146:20 pmYUL - SFO
Nonstop6h 31mAir Canada
Deal found 12/16$465
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/315:00 amSFO - YUL
1 stop9h 08mUnited Airlines
Tue 1/146:20 pmYUL - SFO
Nonstop6h 31mUnited Airlines
Deal found 12/17$467
This American Airlines deal was found by Cheapflights users on 12/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2412:41 amSFO - YYZ
1 stop11h 49mAmerican Airlines
Mon 1/206:10 amYYZ - SFO
1 stop10h 25mAmerican Airlines
Deal found 12/18$566
This Mytrip deal was found by Cheapflights users on 12/17. 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 12/291:40 pmSFO - YYZ
Nonstop5h 02mPorter Airlines
Thu 1/99:35 amYYZ - SFO
Nonstop5h 49mPorter Airlines
Deal found 12/17$615
This Trip.com deal was found by Cheapflights users on 12/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/281:40 pmSFO - YOW
1 stop8h 02mMultiple Airlines
Sat 1/44:00 pmYOW - SFO
2 stops20h 47mMultiple Airlines
Deal found 12/18$641
This United deal was found by Cheapflights users on 12/18. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/251:15 pmSFO - YYZ
1 stop8h 11mUnited Airlines
Mon 1/205:20 pmYYZ - SFO
Nonstop5h 47mUnited Airlines
Deal found 12/18$650

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 2,558,603 searches. Data last updated December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sun 1/26

2:54 pm-6:46 am

1 stop12h 52m

Toronto Pearson Intl

Fri 1/31

8:00 pm-7:16 am

1 stop14h 16m

$217

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Tue 6/3

7:30 am-9:03 pm

2 stops10h 33m

Toronto Pearson Intl

Tue 6/10

11:00 am-5:15 pm

1 stop9h 15m

$260

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Thu 1/23

2:10 pm-5:33 am

2 stops12h 23m

Ottawa

Thu 1/30

6:15 am-1:05 pm

1 stop9h 50m

$268

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Thu 1/9

1:35 pm-12:30 am

1 stop7h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 1/15

6:45 am-12:24 pm

1 stop8h 39m

$277

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 5/23

12:50 pm-12:46 am

1 stop8h 56m

Toronto Region of Waterloo Intl

Tue 5/27

6:00 am-12:05 pm

1 stop9h 05m

$277

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Wed 1/15

3:18 pm-4:35 pm

1 stop22h 17m

Montreal Pierre Elliott Trudeau Intl

Wed 1/22

6:45 am-6:02 pm

2 stops14h 17m

$281

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Thu 1/23

1:35 pm-12:40 am

1 stop8h 05m

Ottawa

Thu 1/30

6:15 am-1:05 pm

1 stop9h 50m

$281

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sat 2/1

7:10 pm-7:10 am

1 stop9h 00m

Toronto Pearson Intl

Sat 2/8

7:55 am-6:25 pm

1 stop13h 30m

$282

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Tue 1/7

1:40 pm-12:40 am

1 stop8h 00m

Ottawa

Wed 1/15

6:20 am-12:24 pm

1 stop9h 04m

$297

San FranciscoToronto

SFO - YKF

SFOYKF

San Francisco

Fri 6/13

6:05 pm-5:15 am

1 stop8h 10m

Toronto Region of Waterloo Intl

Sun 6/15

6:00 am-12:05 pm

1 stop9h 05m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 60 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 $243). 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 December 18, 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 December 18, 2024.

The most flights from SFO to CAON are scheduled on a Monday (22 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (15 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 December 18, 2024.
Peruse reviews from past customers who have flown with Frontier, Porter Airlines and Alaska 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
9,552 reviews

Entertainment

7.1

Overall

8.0

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
9,552 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Entertainment

7.1

Overall

8.0

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
8,604 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Entertainment

7.1

Overall

8.0

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
7.9
Good
283 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Entertainment

7.1

Overall

8.0

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

Copa Airlines
7.7
Good
1,723 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Entertainment

7.1

Overall

8.0

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
1,606 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Entertainment

7.1

Overall

8.0

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 WestJet, which is currently one of the cheapest options available, starting at $124. Porter Airlines flights start at $132 while deals on United Airlines start at $146 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%), Air Canada (86%), United Airlines( 85%).

  • 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 $1,486, our data indicates the cheapest price to be $148. The most popular route (San Francisco - Toronto Pearson Intl), is priced around $217.

  • 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 $243). 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.

See more FAQs

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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 2,558,603 searches. Data last updated December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$175Average$469FlexibilityNo cancel feeOn-time52%
DeltaCheapest$187Average$551FlexibilityNo cancel feeOn-timeN/A
Lynx AirCheapest$194Average$236FlexibilityNo cancel feeOn-timeN/A
Air TransatCheapest$195Average$410FlexibilityNo cancel feeOn-time50%
Air CanadaCheapest$207Average$646FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$213Average$329FlexibilityNo cancel feeOn-time71%
WestJetCheapest$227Average$485FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$244Average$631FlexibilityNo cancel feeOn-time69%
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