Question 1

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

Accepted Answer

C$ 220 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$ 223 and C$ 238, respectively.

Question 2

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

Accepted Answer

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 December is currently the most expensive (average of C$ 368). 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.

Question 3

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

Accepted Answer

The most flights from CAON to zzXIH are scheduled on a Thursday (16 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (10 on average).

Question 4

E

Accepted Answer

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.

Question 5

E

Accepted Answer

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).

Question 6

How far in advance should I book a flight from Region of Ontario to San Francisco Bay Area?

Accepted Answer

To save on the cost of your flight from Region of Ontario to San Francisco Bay Area, book at least 44 days before your planned departure. Booking around this time can save you about 89% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 588 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 1,031.

Question 7

What is the cheapest month to fly from Region of Ontario to San Francisco Bay Area?

Accepted Answer

April can be a great time to fly to San Francisco Bay Area from Region of Ontario with a flight ticket averaging about C$ 537. Cheapflights users have found deals in the month of April for as cheap as C$ 296. The most expensive prices can be found in the month of December.

Question 8

What is the cheapest time of day to fly from ON to XIH?

Accepted Answer

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.

Question 9

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

Accepted Answer

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

Question 10

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

Accepted Answer

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.

Question 11

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

Accepted Answer

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.

Question 12

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

Accepted Answer

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco Bay Area from Ontario today with Cheapflights!

Question 13

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

Accepted Answer

Cheapflights simply makes it quick and affordable to book flights from Ontario to San Francisco Bay Area by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Question 14

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

Accepted Answer

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.

Question 15

Can Cheapflights notify me if prices for flights from Ontario to San Francisco Bay Area become cheaper?

Accepted Answer

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.

Round-trip from	C$ 372
One-way from	C$ 220
Popular in	December
Cheapest in	April
Average price	C$ 614

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	CheapestC$ 258	AverageC$ 593	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
WestJet	CheapestC$ 287	AverageC$ 430	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Delta	CheapestC$ 329	AverageC$ 499	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air Canada	CheapestC$ 330	AverageC$ 590	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 334	AverageC$ 699	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Porter Airlines	CheapestC$ 342	AverageC$ 483	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
Alaska Airlines	CheapestC$ 390	AverageC$ 664	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Air Transat	CheapestC$ 430	AverageC$ 513	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights

Cheap flights from Ontario to San Francisco Bay Area

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 31 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Insights

Everything you need to know about your flight from Ontario to San Francisco Bay Area

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

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 31 July 2025.

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

Reviews of airlines servicing San Francisco Bay Area

See what other customers who have flown with Alaska Airlines,Porter Airlines, andDelta from Ontario to San Francisco Bay Area have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

How can I 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?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to San Francisco Bay Area

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Top 8 airlines flying from Ontario to San Francisco Bay Area

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

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

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

Can Cheapflights notify me if prices for flights from Ontario to San Francisco Bay Area become cheaper?

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