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Cheap flights from San Francisco Bay Area to Ontario from C$ 198

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YYZ
21 Apr — 28 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco Bay Area to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco Bay Area to Ontario
Explore the most affordable flight options available from San Francisco Bay Area to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 March 2026.

Mon 1/66:00 a.m.
SFO
-
YYZ
2 stops12h 10m
WestJet
Thu 4/610:50 a.m.
YYZ
-
SFO
1 stop8h 50m
WestJet
Deal found 17/3C$ 369
Fri 1/51:00 p.m.
SFO
-
YYZ
2 stops13h 10m
WestJet
Wed 6/56:15 a.m.
YYZ
-
SFO
1 stop8h 45m
WestJet
Deal found 18/3C$ 370
Mon 4/56:00 a.m.
SFO
-
YYZ
2 stops10h 55m
WestJet
Mon 11/56:15 a.m.
YYZ
-
SFO
1 stop8h 45m
WestJet
Deal found 18/3C$ 372
Fri 1/51:00 p.m.
SFO
-
YYZ
1 stop8h 10m
WestJet
Sun 17/512:40 p.m.
YYZ
-
SFO
2 stops12h 15m
WestJet
Deal found 18/3C$ 373
Fri 1/56:00 a.m.
SFO
-
YYZ
2 stops10h 55m
WestJet
Thu 7/53:50 p.m.
YYZ
-
SFO
1 stop9h 05m
WestJet
Deal found 18/3C$ 375
Fri 1/51:00 p.m.
SFO
-
YYZ
1 stop8h 10m
WestJet
Mon 11/56:15 a.m.
YYZ
-
SFO
1 stop8h 45m
WestJet
Deal found 18/3C$ 376
Wed 17/66:05 p.m.
SFO
-
YYZ
1 stop9h 50m
WestJet
Wed 24/612:40 p.m.
YYZ
-
SFO
2 stops12h 15m
WestJet
Deal found 19/3C$ 377
Thu 7/51:00 p.m.
SFO
-
YYZ
1 stop8h 10m
WestJet
Sat 9/56:15 a.m.
YYZ
-
SFO
1 stop8h 45m
WestJet
Deal found 18/3C$ 380
Wed 6/51:00 p.m.
SFO
-
YYZ
2 stops13h 10m
WestJet
Sun 10/512:40 p.m.
YYZ
-
SFO
2 stops12h 15m
WestJet
Deal found 17/3C$ 387
Wed 6/51:00 p.m.
SFO
-
YYZ
2 stops13h 10m
WestJet
Mon 11/512:40 p.m.
YYZ
-
SFO
2 stops12h 15m
WestJet
Deal found 17/3C$ 390
Fri 29/56:05 p.m.
SFO
-
YOW
1 stop8h 30m
WestJet
Sun 7/612:25 p.m.
YOW
-
SFO
2 stops12h 30m
WestJet
Deal found 18/3C$ 417
Mon 1/66:05 p.m.
SFO
-
YOW
1 stop8h 30m
WestJet
Tue 2/66:15 p.m.
YOW
-
SFO
2 stops20h 45m
WestJet
Deal found 18/3C$ 457

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 22 March 2026.

Round-trip from

C$ 369

One-way from

C$ 198

Popular in

December

Cheapest in

January

Average price

C$ 626
WestJet
  • WestJet
  • 1/6-4/6
  • 3 total stops
  • 21h 00m total
  • San Francisco Bay Area to Ontario
Search Deals
4/5
  • 4/5
  • 1 total stop
  • 20h 47m total
  • San Francisco Bay Area to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco Bay Area 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 629,999 searches. Data last updated 22 March 2026.
Use the filters below to find and compare flights from San Francisco Bay Area to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Fri 29/5

6:00 a.m.-12:30 p.m.

2 stops27h 30m

Ottawa

Sun 7/6

12:25 p.m.-9:55 p.m.

2 stops12h 30m

C$ 497

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Fri 1/5

6:00 a.m.-5:35 a.m.

1 stop20h 35m

Ottawa

Tue 5/5

4:15 p.m.-12:00 p.m.

1 stop22h 45m

C$ 510

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 13/4

11:00 p.m.-12:19 p.m.

1 stop10h 19m

Toronto Pearson Intl

Mon 20/4

11:30 a.m.-9:45 p.m.

1 stop13h 15m

C$ 546

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sun 31/5

6:20 a.m.-6:31 p.m.

1 stop9h 11m

Toronto Pearson Intl

Wed 3/6

1:34 p.m.-10:55 p.m.

1 stop12h 21m

C$ 546

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sun 10/5

10:00 p.m.-10:19 a.m.

1 stop9h 19m

Toronto Pearson Intl

Sat 13/6

1:30 p.m.-10:53 p.m.

1 stop12h 23m

C$ 546

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Mon 11/5

11:00 p.m.-11:19 a.m.

1 stop9h 19m

Toronto Pearson Intl

Thu 11/6

5:50 p.m.-11:49 p.m.

1 stop8h 59m

C$ 546

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Sun 17/5

10:00 p.m.-12:19 p.m.

1 stop11h 19m

Toronto Pearson Intl

Sun 24/5

6:30 a.m.-5:02 p.m.

2 stops13h 32m

C$ 560

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Fri 1/5

10:10 a.m.-11:10 p.m.

2 stops10h 00m

Toronto Pearson Intl

Fri 8/5

2:20 p.m.-9:40 p.m.

1 stop10h 20m

C$ 560

San JoseToronto

SJC - YYZ

SJCYYZ

San Jose

Wed 15/4

8:20 p.m.-8:56 a.m.

2 stops9h 36m

Toronto Pearson Intl

Sun 19/4

6:15 a.m.-12:21 p.m.

1 stop9h 06m

C$ 560

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Tue 14/4

10:50 p.m.-11:49 a.m.

1 stop9h 59m

Toronto Pearson Intl

Wed 15/4

2:30 p.m.-1:17 a.m.

1 stop13h 47m

C$ 598

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/3

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from San Francisco Bay Area to Ontario

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

Cheapflights Insights

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

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

Currently, February is the cheapest month in which you can book a flight from San Francisco Bay Area to Region of Ontario (average of C$ 173). Flying from San Francisco Bay Area to Region of Ontario in January is currently the most expensive (average of C$ 303). 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 22 March 2026.

It’s typically best to fly out from San Francisco Bay Area to Region of Ontario in the evening. Doing so could potentially save you 26% 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 14 March 2026.

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

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

Explore weekly flight availability from San Francisco Bay Area 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 22 March 2026.

The most flights from zzXIH to CAON are scheduled on a Tuesday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).

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 22 March 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
426 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.0

Food

7.6

Crew

8.6

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
426 reviews
Porter Airlines
8.0
Very good
426 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.0

Food

7.6

Crew

8.6

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
7.7
Good
521 reviews
Porter Airlines
8.0
Very good
426 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.0

Food

7.6

Crew

8.6

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
9,456 reviews
Porter Airlines
8.0
Very good
426 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.0

Food

7.6

Crew

8.6

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
3,300 reviews
Porter Airlines
8.0
Very good
426 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.0

Food

7.6

Crew

8.6

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
10,830 reviews
Porter Airlines
8.0
Very good
426 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.0

Food

7.6

Crew

8.6

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$ 598, WestJet can have you in Region of Ontario from San Francisco Bay Area in 9h 59m. 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$ 103 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on United Airlines and Air Transat, with prices starting from C$ 167 and C$ 173, 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, February is the cheapest month in which you can book a flight from San Francisco Bay Area to Region of Ontario (average of C$ 173). Flying from San Francisco Bay Area to Region of Ontario in January is currently the most expensive (average of C$ 303). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 22 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 195AverageC$ 619FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 221AverageC$ 420FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 222AverageC$ 321FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 266AverageC$ 625FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 489AverageC$ 882FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
United AirlinesCheapestC$ 529AverageC$ 804FlexibilityNo 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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