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$161+ Cheap flights from Ontario to San Francisco (SFO)

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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SFO
nov. 26 — dic. 31
mar. 11/26
mar. 12/3
1 adult, Economy
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Cheap flight deals from Ontario to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (CAON) to San Francisco (SFO). 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 noviembre 21, 2024.

Find flight deals from Ontario to San Francisco

Cheapest flights from Ontario to San Francisco
Explore the most affordable flight options available from Ontario to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.

This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/76:45 amYUL - SFO
1 stop8h 39mPorter Airlines
lun. 12/91:30 pmSFO - YUL
1 stop7h 58mPorter Airlines
Deal found 11/20$279
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.
lun. 12/96:25 amYOW - SFO
1 stop8h 59mPorter Airlines
vie. 12/131:30 pmSFO - YOW
1 stop8h 12mPorter Airlines
Deal found 11/20$313
This Kiwi.com deal was found by Cheapflights users on 11/21. 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.
dom. 12/1510:20 amYYZ - SFO
1 stop14h 41mMultiple Airlines
jue. 1/93:05 pmSFO - YYZ
1 stop11h 50mMultiple Airlines
Deal found 11/21$316
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/92:10 pmYOW - SFO
1 stop10h 32mUnited Airlines
vie. 12/138:22 pmSFO - YOW
2 stops16h 54mUnited Airlines
Deal found 11/20$330
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/96:45 amYUL - SFO
1 stop8h 39mMultiple Airlines
vie. 12/1310:59 pmSFO - YUL
2 stops22h 29mMultiple Airlines
Deal found 11/20$331
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/139:35 amYYZ - SFO
Nonstop5h 49mPorter Airlines
dom. 12/151:30 pmSFO - YYZ
Nonstop5h 02mPorter Airlines
Deal found 11/19$338
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.
lun. 12/99:35 amYYZ - SFO
Nonstop5h 49mAir Transat
mié. 12/111:30 pmSFO - YYZ
Nonstop5h 02mAir Transat
Deal found 11/20$341
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/116:10 pmYOW - SFO
1 stop16h 04mMultiple Airlines
vie. 12/1311:48 amSFO - YOW
2 stops23h 03mMultiple Airlines
Deal found 11/20$347
This Air Canada deal was found by Cheapflights users on 11/21. 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.
mié. 12/188:05 amYYZ - SFO
Nonstop5h 47mAir Canada
vie. 1/108:30 amSFO - YYZ
1 stop9h 20mAir Canada
Deal found 11/21$350
This Delta deal was found by Cheapflights users on 11/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/155:04 pmYYZ - SFO
1 stop10h 14mDelta
mar. 1/710:45 pmSFO - YYZ
1 stop7h 35mDelta
Deal found 11/21$371
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/2310:35 pmYYZ - SFO
1 stop17h 30mWestJet
vie. 11/291:55 pmSFO - YYZ
2 stops13h 05mWestJet
Deal found 11/19$376
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/104:20 pmYYZ - SFO
2 stops20h 20mAlaska Airlines
mar. 4/292:40 pmSFO - YYZ
1 stop21h 25mAlaska Airlines
Deal found 11/20$379

Find flights from Ontario to San Francisco within your budget

Customize your flight search to find flights from Ontario to San Francisco 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 noviembre 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

jue. 1/23

6:45 am-12:24 pm

1 stop8h 39m

San Francisco

jue. 2/6

1:30 pm-12:30 am

1 stop8h 00m

$260

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

jue. 1/30

6:20 am-12:24 pm

1 stop9h 04m

San Francisco

dom. 2/2

1:30 pm-12:40 am

1 stop8h 10m

$292

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

mar. 1/14

5:35 pm-7:14 am

1 stop16h 39m

San Francisco

mar. 1/21

8:06 am-12:30 am

2 stops13h 24m

$298

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

jue. 1/9

5:30 am-10:52 am

1 stop8h 22m

San Francisco

jue. 1/16

8:25 am-7:22 pm

1 stop7h 57m

$301

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

jue. 1/9

10:30 am-9:14 pm

1 stop13h 44m

San Francisco

jue. 1/9

11:59 pm-9:24 pm

1 stop18h 25m

$303

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

jue. 1/9

5:00 pm-11:13 pm

1 stop9h 13m

San Francisco

jue. 1/16

8:25 am-7:22 pm

1 stop7h 57m

$307

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

dom. 12/15

10:20 am-10:01 pm

1 stop14h 41m

San Francisco

jue. 1/9

3:05 pm-5:55 am

1 stop11h 50m

$316

OttawaSan Francisco

YOW - SFO

YOWSFO

Ottawa

jue. 1/9

6:15 am-1:05 pm

1 stop9h 50m

San Francisco

jue. 1/16

1:55 pm-5:33 am

2 stops12h 38m

$327

LondonSan Francisco

YXU - SFO

YXUSFO

London

mié. 3/19

3:25 pm-9:42 pm

1 stop9h 17m

San Francisco

lun. 3/24

10:45 pm-9:15 am

1 stop7h 30m

$330

TorontoSan Francisco

YYZ - SFO

YYZSFO

Toronto Pearson Intl

jue. 2/6

6:30 am-1:06 pm

1 stop9h 36m

San Francisco

dom. 2/9

1:55 pm-6:03 pm

2 stops25h 08m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 59 results
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Best time to book a flight from Ontario to San Francisco

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

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

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to San Francisco (average of $276). Flying from Region of Ontario to San Francisco in June is currently the most expensive (average of $381). 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 SFO?

Find hourly flight availability from Ontario to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 21, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to San Francisco as you normally would.

Weekly flight availability from Region of Ontario to San Francisco

Explore weekly flight availability from Ontario to San Francisco. 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 noviembre 21, 2024.

The most flights from CAON to SFO are scheduled on a Monday (20 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 San Francisco by month

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

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

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

If weather is an important factor for your trip to San Francisco, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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. Reviews last updated noviembre 21, 2024.
See what other customers who have flown with Porter Airlines, United Airlines and Air Canada from Ontario to San Francisco have to say. 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
9,458 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.2

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Alaska Airlines
8.0
Very good
9,458 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.2

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Delta
8.0
Very good
8,758 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.2

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Porter Airlines
7.8
Good
286 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.2

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Air Transat
7.8
Good
389 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.2

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

United Airlines
7.4
Good
9,172 reviews
Alaska Airlines
8.0
Very good
9,458 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.2

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Related info for your journey

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

    If you book a flight to San Francisco from Ontario, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco.

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

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at $161. Porter Airlines flights start at $173 while deals on Air Canada start at $176 one-way.

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

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

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Region of Ontario to San Francisco on time: Porter Airlines (85%), Air Transat (85%), Air Canada (79%).

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

    Looking at all options, your cheapest flight can be booked for $189. While the most popular route (Toronto Pearson Intl - San Francisco) can be booked for $228 on average our data indicates $881 when flying from Region of Ontario to San Francisco.

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

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

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

    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.

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

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

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to San Francisco (average of $276). Flying from Region of Ontario to San Francisco in June is currently the most expensive (average of $381). 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 Ontario to San Francisco

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

Discover the top 8 airlines that operate flights from Ontario to San Francisco. 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 noviembre 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Lynx AirCheapest$115Average$238FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$199Average$471FlexibilityNo cancel feeOn-time71%
Porter AirlinesCheapest$232Average$444FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$235Average$517FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$239Average$587FlexibilityNo cancel feeOn-time69%
Air TransatCheapest$239Average$376FlexibilityNo cancel feeOn-time50%
WestJetCheapest$255Average$478FlexibilityNo cancel feeOn-time60%
DeltaCheapest$435Average$526FlexibilityNo cancel feeOn-timeN/A
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