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Cheap flights from San Francisco Bay Area to Ontario

SFO — YYZ
5 Jun — 12 Jun1
1 adult
1 adult, Economy, 0 bags

Find flight deals from San Francisco Bay Area to Ontario

Keep the following information in mind while searching for San Francisco Bay Area to Ontario flight deals. Data was last updated 6 May 2026.

Round-trip from

C$ 404

One-way from

C$ 208

Popular in

December

Cheapest in

January

Average price

C$ 696
WestJet
  • WestJet
  • 17/8-21/8
  • 3 total stops
  • 19h 45m total
  • San Francisco Bay Area to Ontario
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WestJet
  • WestJet
  • 9/9
  • 1 total stop
  • 8h 15m total
  • San Francisco Bay Area to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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Cheapflights Insights

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

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

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco Bay Area to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from San Francisco Bay Area to Region of Ontario (average of C$ 182). Flying from San Francisco Bay Area to Region of Ontario in February is currently the most expensive (average of C$ 1,590). 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 XIH to ON?

Find hourly flight availability from San Francisco Bay Area 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 6 May 2026.

It’s typically best to fly out from San Francisco Bay Area to Region of Ontario in the morning. Doing so could potentially save you 12% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from San Francisco Bay Area to Ontario. Price data was last updated on 2 May 2026.

Travelers seeking maximum savings on their San Francisco Bay Area to Region of Ontario flight should consider departing on Monday afternoons when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 6 May 2026.
See what other customers who have flown with Porter Airlines,Air Transat, andUnited Airlines from San Francisco Bay Area to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
437 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
437 reviews
Porter Airlines
8.0
Very good
437 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Transat
7.8
Good
548 reviews
Porter Airlines
8.0
Very good
437 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
United Airlines
7.4
Good
9,690 reviews
Porter Airlines
8.0
Very good
437 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
WestJet
7.2
Good
3,331 reviews
Porter Airlines
8.0
Very good
437 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
11,004 reviews
Porter Airlines
8.0
Very good
437 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Food

7.6

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

Related info for your journey

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

  • How long is the flight from San Francisco Bay Area to Region of Ontario?

    For as low as C$ 583, WestJet can have you in Region of Ontario from San Francisco Bay Area in 5h 05m. San Francisco Bay Area and Region of Ontario are separated by a distance of 3626 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    C$ 102 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Transat and Porter Airlines, with prices starting from C$ 172 and C$ 176, respectively.

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from San Francisco Bay Area to Region of Ontario (average of C$ 182). Flying from San Francisco Bay Area to Region of Ontario in February is currently the most expensive (average of C$ 1,590). 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 Bay Area to Ontario

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Top 6 airlines flying from San Francisco Bay Area to Ontario

Discover the top 6 airlines that operate flights from San Francisco Bay Area 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 629,999 searches. Data last updated 6 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 193AverageC$ 628FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 219AverageC$ 437FlexibilityNo cancel feeOn-time60%
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DeltaCheapestC$ 221AverageC$ 302FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 261AverageC$ 665FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 485AverageC$ 875FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
United AirlinesCheapestC$ 525AverageC$ 798FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Francisco Bay Area to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from San Francisco Bay Area.

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

Certainly. Search results for flights to Ontario from San Francisco Bay Area shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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