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Cheap flights from San Francisco (SFO) to Ontario from $188

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 7/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SFO — YYZ
Jun 4 — Jun 111
From?
To?
Tue 6/4
Tue 6/11
1 adult, Economy
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How far in advance should I book a flight from San Francisco to Region of Ontario?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 56 days in advance, which can save you up to 63% on flights from San Francisco to Region of Ontario compared to booking the week you need them. Waiting 56 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $544. For sooner than that we have options available in the next 3 days from $799.

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

February is one of the best times of the year to fly to Region of Ontario from San Francisco. Prices for February average $489 per person but you can even find prices for as low as $173. The most expensive prices can be found in the month of December. Opting for a February flight can save you 34% on your journey compared to booking in December

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

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.

Cheap Porter Airlines flights from San Francisco to Ontario

Explore cheap flight options specifically provided by Porter Airlines for the route between San Francisco and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Check out some of the cheapest Porter Airlines flights we've come across from San Francisco to Ontario. It's recommended that users confirm their flight details before booking.
Tue 6/41:55 pmSFO - YUL
1 stop7h 38mPorter Airlines
Wed 6/127:00 amYUL - SFO
1 stop8h 52mPorter Airlines
Deal found 5/28$422
Fri 7/121:55 pmSFO - YUL
1 stop7h 38mPorter Airlines
Sun 8/257:00 amYUL - SFO
1 stop9h 05mPorter Airlines
Deal found 5/29$428
Sun 7/71:55 pmSFO - YUL
1 stop7h 38mPorter Airlines
Sat 7/137:00 amYUL - SFO
1 stop8h 50mPorter Airlines
Deal found 5/30$444
Mon 7/11:55 pmSFO - YUL
1 stop7h 38mPorter Airlines
Thu 7/47:00 amYUL - SFO
1 stop8h 50mPorter Airlines
Deal found 5/29$445
Sat 6/221:55 pmSFO - YUL
1 stop7h 38mPorter Airlines
Wed 7/37:00 amYUL - SFO
1 stop8h 50mPorter Airlines
Deal found 5/29$446
Wed 6/191:55 pmSFO - YUL
1 stop7h 38mPorter Airlines
Thu 6/207:00 amYUL - SFO
1 stop8h 52mPorter Airlines
Deal found 5/29$447
Wed 7/31:55 pmSFO - YUL
1 stop7h 38mPorter Airlines
Wed 7/177:00 amYUL - SFO
1 stop8h 50mPorter Airlines
Deal found 5/29$453
Mon 7/16:15 amSFO - YUL
Nonstop5h 25mPorter Airlines
Wed 7/37:00 amYUL - SFO
1 stop8h 50mPorter Airlines
Deal found 5/29$458
Tue 6/41:55 pmSFO - YUL
1 stop7h 38mPorter Airlines
Tue 6/117:00 amYUL - SFO
1 stop8h 52mPorter Airlines
Deal found 5/29$464

Cheap Sun Country Air flights from San Francisco to Ontario

Explore cheap flight options specifically provided by Sun Country Air for the route between San Francisco and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Take a gander at the lowest prices we've found on Sun Country Air flights from San Francisco to Ontario. Deals frequently update to provide users with more options.
Thu 8/16:00 pmSFO - YUL
1 stop13h 45mSun Country Air
Mon 8/511:45 amYUL - SFO
1 stop27h 25mSun Country Air
Deal found 5/29$450
Thu 7/1112:25 amSFO - YUL
1 stop7h 20mSun Country Air
Fri 7/2611:45 amYUL - SFO
1 stop26h 13mSun Country Air
Deal found 5/29$460
Mon 7/15:40 pmSFO - YUL
1 stop13h 25mSun Country Air
Fri 7/511:45 amYUL - SFO
1 stop14h 11mSun Country Air
Deal found 5/29$545

Cheap San Francisco to Ontario flights in May & June 2024

Find cheap flight options from San Francisco to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,784,634 searches. Prices were last updated on May 30, 2024.
Scroll through some of the best deals on flights from San Francisco to Ontario in 2024. Check back soon for alternative fares.
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/189:35 amYYZ - SFO
1 stop15h 11mMultiple Airlines
Deal found 5/29$233
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/189:35 amYYZ - SFO
1 stop15h 11mMultiple Airlines
Deal found 5/30$239
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/188:00 pmYYZ - SFO
1 stop19h 40mMultiple Airlines
Deal found 5/30$241
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/1812:20 pmYYZ - SFO
1 stop12h 26mMultiple Airlines
Deal found 5/30$242
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/1812:20 pmYYZ - SFO
1 stop12h 26mMultiple Airlines
Deal found 5/29$245
Mon 6/106:08 pmSFO - YYZ
1 stop25h 39mMultiple Airlines
Tue 6/1812:20 pmYYZ - SFO
1 stop15h 24mMultiple Airlines
Deal found 5/30$246
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Thu 6/208:20 pmYYZ - SFO
1 stop28h 41mMultiple Airlines
Deal found 5/29$247
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Sun 6/238:20 pmYYZ - SFO
1 stop28h 46mMultiple Airlines
Deal found 5/29$251
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Thu 6/208:20 pmYYZ - SFO
1 stop28h 41mMultiple Airlines
Deal found 5/30$253

San Francisco to Ontario 2024 flight deals

Discover exclusive flight deals for travel between San Francisco and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Scroll through some of the best deals on flights from San Francisco to Ontario in 2024. Check back soon for alternative fares.
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/189:35 amYYZ - SFO
1 stop15h 11mMultiple Airlines
Deal found 5/29$233
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/1812:20 pmYYZ - SFO
1 stop12h 26mMultiple Airlines
Deal found 5/29$245
Mon 6/106:08 pmSFO - YYZ
1 stop25h 39mMultiple Airlines
Tue 6/1812:20 pmYYZ - SFO
1 stop15h 24mMultiple Airlines
Deal found 5/30$246
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Thu 6/208:20 pmYYZ - SFO
1 stop28h 41mMultiple Airlines
Deal found 5/29$247
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/1812:20 pmYYZ - SFO
1 stop12h 26mMultiple Airlines
Deal found 5/30$249
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Sun 6/238:20 pmYYZ - SFO
1 stop28h 46mMultiple Airlines
Deal found 5/29$251
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Sun 6/168:20 pmYYZ - SFO
1 stop31h 24mMultiple Airlines
Deal found 5/29$258
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Thu 6/208:20 pmYYZ - SFO
1 stop31h 22mMultiple Airlines
Deal found 5/30$259
Tue 6/1112:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Thu 6/138:20 pmYYZ - SFO
1 stop18h 12mMultiple Airlines
Deal found 5/30$260

Non-stop flights to Ontario from San Francisco

Discover non-stop flight options from San Francisco to Ontario. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
For a quicker trip, book one of these direct flights from San Francisco to Ontario. Users seeking other options on flights from San Francisco to Ontario should update the search form at the top of the page.
Wed 9/116:15 amSFO - YUL
Nonstop5h 25mPorter Airlines
Sun 9/158:00 pmYUL - SFO
Nonstop6h 16mPorter Airlines
Deal found 5/29$423
Wed 9/186:15 amSFO - YUL
Nonstop5h 25mPorter Airlines
Sun 9/228:00 pmYUL - SFO
Nonstop6h 16mPorter Airlines
Deal found 5/29$451
Wed 9/186:15 amSFO - YUL
Nonstop5h 25mPorter Airlines
Sun 9/228:00 pmYUL - SFO
Nonstop6h 16mPorter Airlines
Deal found 5/30$452
Sat 9/146:15 amSFO - YUL
Nonstop5h 25mPorter Airlines
Fri 9/208:00 pmYUL - SFO
Nonstop6h 16mPorter Airlines
Deal found 5/29$461
Mon 8/196:15 amSFO - YUL
Nonstop5h 25mPorter Airlines
Fri 8/238:00 pmYUL - SFO
Nonstop6h 12mPorter Airlines
Deal found 5/29$481
Sat 9/76:15 amSFO - YUL
Nonstop5h 25mPorter Airlines
Fri 9/208:00 pmYUL - SFO
Nonstop6h 16mPorter Airlines
Deal found 5/29$493
Wed 10/26:15 amSFO - YUL
Nonstop5h 25mPorter Airlines
Sun 10/68:00 pmYUL - SFO
Nonstop6h 16mPorter Airlines
Deal found 5/29$499
Thu 7/111:55 pmSFO - YYZ
Nonstop4h 55mPorter Airlines
Tue 7/1610:15 amYYZ - SFO
Nonstop5h 35mPorter Airlines
Deal found 5/28$508
Sun 6/231:55 pmSFO - YYZ
Nonstop5h 05mPorter Airlines
Wed 7/310:15 amYYZ - SFO
Nonstop5h 35mPorter Airlines
Deal found 5/29$512

San Francisco to Ontario flights leaving soon

Find last-minute flight options from San Francisco to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Have a look at some of the flights available from San Francisco to Ontario departing last-minute. It's wise to confirm all flight details are correct before booking.
Sat 6/812:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/1812:20 pmYYZ - SFO
1 stop12h 26mMultiple Airlines
Deal found 5/29$278
Sat 6/812:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/1812:20 pmYYZ - SFO
1 stop12h 26mMultiple Airlines
Deal found 5/29$279
Sat 6/812:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Sun 6/238:20 pmYYZ - SFO
1 stop28h 46mMultiple Airlines
Deal found 5/29$280
Sat 6/812:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/251:25 pmYYZ - SFO
1 stop11h 21mMultiple Airlines
Deal found 5/29$292
Sat 6/812:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Thu 6/138:20 pmYYZ - SFO
1 stop18h 12mMultiple Airlines
Deal found 5/29$293
Sat 6/812:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Tue 6/118:20 pmYYZ - SFO
1 stop19h 17mMultiple Airlines
Deal found 5/29$294
Sat 6/812:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Sun 6/98:20 pmYYZ - SFO
1 stop18h 49mMultiple Airlines
Deal found 5/29$296
Sat 6/812:22 pmSFO - YYZ
1 stop15h 13mMultiple Airlines
Sun 6/98:20 pmYYZ - SFO
1 stop18h 49mMultiple Airlines
Deal found 5/29$297
Thu 6/610:17 amSFO - YYZ
1 stop17h 18mMultiple Airlines
Sun 6/238:20 pmYYZ - SFO
1 stop18h 49mMultiple Airlines
Deal found 5/28$302

One-way flights to Ontario from San Francisco

Search for one-way flight options from San Francisco to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Take a look at some of the best available options we've come across on one-way flights from San Francisco to Ontario. Those needing a return flight from San Francisco to Ontario can use the search form above.
Sun 7/286:10 pmSFO - YYZ
1 stop12h 13mSun Country Air
Deal found 5/30$188
Tue 7/26:00 amSFO - YYZ
1 stop12h 46mMultiple Airlines
Deal found 5/30$189
Thu 8/110:16 pmSFO - YYZ
1 stop29h 27mMultiple Airlines
Deal found 5/30$190
Thu 7/45:55 pmSFO - YYZ
1 stop14h 34mSun Country Air
Deal found 5/29$193
Wed 6/1912:08 pmSFO - YUL
2 stops20h 20mMultiple Airlines
Deal found 5/29$194
Fri 8/22:41 pmSFO - YYZ
1 stop13h 01mMultiple Airlines
Deal found 5/30$195
Sun 6/910:17 amSFO - YYZ
1 stop10h 23mMultiple Airlines
Deal found 5/30$196
Tue 6/46:33 pmSFO - YOW
2 stops19h 54mMultiple Airlines
Deal found 5/28$196
Sat 6/812:22 pmSFO - YYZ
2 stops21h 20mMultiple Airlines
Deal found 5/29$197

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 2,784,634 searches. Data last updated May 30, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$233 - $560

Route

Depart

Return

Price

San FranciscoToronto Pearson Intl

SFO - YYZ

SFOYYZ

San Francisco

Tue 6/11

1 stop15h 13m

Toronto Pearson Intl

Tue 6/18

1 stop15h 11m

$233

San FranciscoToronto Pearson Intl

SFO - YYZ

SFOYYZ

San Francisco

Tue 6/11

1 stop15h 13m

Toronto Pearson Intl

Tue 6/18

1 stop15h 11m

$239

San FranciscoToronto Pearson Intl

SFO - YYZ

SFOYYZ

San Francisco

Tue 6/11

1 stop15h 13m

Toronto Pearson Intl

Tue 6/18

1 stop19h 40m

$241

San FranciscoMontreal Pierre Elliott Trudeau Intl

SFO - YUL

SFOYUL

San Francisco

Tue 6/4

1 stop7h 38m

Montreal Pierre Elliott Trudeau Intl

Wed 6/12

1 stop8h 52m

$422

San FranciscoMontreal Pierre Elliott Trudeau Intl

SFO - YUL

SFOYUL

San Francisco

Thu 8/1

1 stop13h 45m

Montreal Pierre Elliott Trudeau Intl

Mon 8/5

1 stop27h 25m

$450

San FranciscoToronto Kitchener-Waterloo

SFO - YKF

SFOYKF

San Francisco

Tue 7/16

1 stop9h 02m

Toronto Kitchener-Waterloo

Tue 7/23

2 stops11h 18m

$486

San FranciscoMontreal Pierre Elliott Trudeau Intl

SFO - YUL

SFOYUL

San Francisco

Mon 6/10

2 stops10h 56m

Montreal Pierre Elliott Trudeau Intl

Tue 6/18

2 stops12h 53m

$528

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 7/8

1 stop8h 10m

London

Fri 7/12

1 stop8h 01m

$558

San FranciscoOttawa

SFO - YOW

SFOYOW

San Francisco

Tue 8/6

1 stop14h 19m

Ottawa

Tue 8/13

1 stop8h 21m

$560

Flights are sorted by cheapest first

Deals found on 5/29

No data available for this route at this time. Please check back soon.

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.

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 May 30, 2024.
Peruse reviews from past customers who have flown with Porter Airlines, Sun Country Air and American 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
8.1
Very good
9,192 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,192 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.0
Very good
10,457 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Air Transat
7.7
Good
476 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

WestJet
7.5
Good
2,866 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Porter Airlines
7.4
Good
394 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Boarding

8.2

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

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.

  • Can I find flights from San Francisco to Region of Ontario for under $300 on Cheapflights?

    Yes, there are multiple flights from San Francisco to Region of Ontario for under $300. The cheapest flight booked recently is on Multiple Airlines for just $233, but on average you can expect to pay $254.

  • Are there nonstop flights from San Francisco to Region of Ontario for under $500 on Cheapflights?

    Cheapflights has at least 20 direct flights from San Francisco to Region of Ontario under $500. A good price for a nonstop flight from San Francisco to Region of Ontario is less than $499.

  • Are there last-minute flights available from San Francisco to Region of Ontario for under $300?

    There are currently 20+ open flights from San Francisco to Region of Ontario within the next 7 days for less than $300.

  • 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 Sun Country Air, which is currently one of the cheapest options available, starting at $188. WestJet flights start at $198 while deals on Porter Airlines start at $206 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: Turkish Airlines (89%), Austrian Airlines (86%), Singapore Airlines( 84%).

  • 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 $1,103, our data indicates the cheapest price to be $177. The most popular route (San Francisco - Toronto Pearson Intl), is priced around $252.

  • What does SFO to YYZ mean?

    This is defined as San Francisco Airport (SFO) and Toronto Pearson Intl Airport (YYZ). Codes like Toronto Pearson Intl Airport are often used to just call airports uniquely. Ottawa Airport (YOW), Hamilton Airport (YHM), Toronto Island Airport (YTZ), Toronto Kitchener-Waterloo Airport (YKF), London Airport (YXU) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from San Francisco to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your San Francisco to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from San Francisco to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter San Francisco to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from San Francisco to Ontario that allow pets onboard?

    Many airlines flying from San Francisco to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from San Francisco to Ontario?

    Yes, you can often find last-minute deals on San Francisco to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the San Francisco to Region of Ontario flight deals updated?

    The San Francisco to Region of Ontario flight deals you see on this page were last updated on 5/30.

  • What are the most popular airlines that fly from San Francisco to Region of Ontario?

    Before booking your flight from San Francisco to Region of Ontario check out the most popular airlines for this route: American Airlines, Air Canada or Alaska Airlines.

  • 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 $237). Flying from San Francisco to Region of Ontario in July is currently the most expensive (average of $391). 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 10 airlines flying from San Francisco to Ontario

Discover the top 10 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 2,784,634 searches. Data last updated May 30, 2024.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$168Average$457FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Lynx AirCheapest$192Average$236FlexibilityNo cancel feeOn-timeN/A
Search Lynx Air flights
Air CanadaCheapest$205Average$598FlexibilityNo cancel feeOn-time67%
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American AirlinesCheapest$218Average$290FlexibilityNo cancel feeOn-time71%
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United AirlinesCheapest$229Average$623FlexibilityNo cancel feeOn-time69%
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DeltaCheapest$234Average$485FlexibilityNo cancel feeOn-timeN/A
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Alaska AirlinesCheapest$236Average$472FlexibilityNo cancel feeOn-time75%
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WestJetCheapest$259Average$465FlexibilityNo cancel feeOn-time60%
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Flair AirlinesCheapest$313Average$537FlexibilityNo cancel feeOn-timeN/A
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LufthansaCheapest$427Average$582FlexibilityNo cancel feeOn-time76%
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Search flights from San Francisco to Ontario by cabin class

Find flights from San Francisco to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from San Francisco to Ontario

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 May 30, 2024.
14%of flight departuresEarly morningMidnight to 6 am
41%of flight departuresMorning6 am to noon
23%of flight departuresAfternoonNoon to 6 pm
22%of flight departuresEvening6 pm to midnight
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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 to Ontario?

When you search for this flight from San Francisco to Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Francisco to Ontario for you. Better yet — we are completely free to use.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from San Francisco to Ontario, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on San Francisco to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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