€95 Cheap Flights Ontario to San Francisco (ONT-SFO)

View €95 flight on Sun, 2 Mar 2025Opens in a new window

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Cheap flights from Ontario to San Francisco (ONT-SFO)

Prices were available within the past 7 days and start at €95 for one-way flights and €122 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 27 Feb - Mon, 3 Mar
ONT
Ontario
SFO
San Francisco
€122 Return, found 1 day ago
€122
Return
found 1 day ago
Select United flight, departing Thu, 27 Feb from Ontario to San Francisco, returning Mon, 3 Mar, priced at €122 found 1 day ago
United
Thu, 27 Feb - Mon, 3 Mar
ONT
Ontario
SFO
San Francisco
€171 Return, found 1 day ago
€171
Return
found 1 day ago
Select United flight, departing Thu, 27 Feb from Ontario to San Francisco, returning Mon, 3 Mar, priced at €171 found 1 day ago
United
Thu, 27 Feb - Mon, 3 Mar
ONT
Ontario
SFO
San Francisco
€180 Return, found 1 day ago
€180
Return
found 1 day ago
Select United flight, departing Thu, 27 Feb from Ontario to San Francisco, returning Mon, 3 Mar, priced at €180 found 1 day ago
United
Thu, 27 Feb - Mon, 3 Mar
ONT
Ontario
SFO
San Francisco
€190 Return, found 1 day ago
€190
Return
found 1 day ago
Select United flight, departing Thu, 27 Feb from Ontario to San Francisco, returning Mon, 3 Mar, priced at €190 found 1 day ago
American Airlines
Thu, 27 Feb - Mon, 3 Mar
ONT
Ontario
SFO
San Francisco
€191 Return, found 1 day ago
€191
Return
found 1 day ago
Select American Airlines flight, departing Thu, 27 Feb from Ontario to San Francisco, returning Mon, 3 Mar, priced at €191 found 1 day ago
United
Mon, 31 Mar - Mon, 7 Apr
ONT
Ontario
SFO
San Francisco
€211 Return, found 5 days ago
€211
Return
found 5 days ago
Select United flight, departing Mon, 31 Mar from Ontario to San Francisco, returning Mon, 7 Apr, priced at €211 found 5 days ago
United
Thu, 27 Feb - Mon, 3 Mar
ONT
Ontario
SFO
San Francisco
€229 Return, found 1 day ago
€229
Return
found 1 day ago
Select United flight, departing Thu, 27 Feb from Ontario to San Francisco, returning Mon, 3 Mar, priced at €229 found 1 day ago
American Airlines
Thu, 27 Feb - Mon, 3 Mar
ONT
Ontario
SFO
San Francisco
€239 Return, found 1 day ago
€239
Return
found 1 day ago
Select American Airlines flight, departing Thu, 27 Feb from Ontario to San Francisco, returning Mon, 3 Mar, priced at €239 found 1 day ago
Delta
Mon, 31 Mar - Mon, 7 Apr
ONT
Ontario
SFO
San Francisco
€292 Return, found 5 days ago
€292
Return
found 5 days ago
Select Delta flight, departing Mon, 31 Mar from Ontario to San Francisco, returning Mon, 7 Apr, priced at €292 found 5 days ago
Hawaiian Airlines
Mon, 31 Mar - Mon, 7 Apr
ONT
Ontario
SFO
San Francisco
€581 Return, found 5 days ago
€581
Return
found 5 days ago
Select Hawaiian Airlines flight, departing Mon, 31 Mar from Ontario to San Francisco, returning Mon, 7 Apr, priced at €581 found 5 days ago
Ontario to San Francisco route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
San Francisco Intl.
Return price
€122
Distance
582 km

Perfect flights from Ontario to San Francisco

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Ontario to San Francisco. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of San Francisco, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Los Angeles - Ontario Intl. to San Francisco Intl. ticket options cater to your travel preferences, with incredible one-way fares from €95 and roundtrip prices from €122. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at San Francisco Intl. and explore San Francisco and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your ONT to SFO travel arrangements today and embark on the journey of a lifetime in San Francisco.

Frequently asked questions

How much is a flight from ONT to SFO?
If you’re travelling between ONT and SFO, round-trip flights start from €122. This price is based on airfares available within the last 7 days on Expedia for flights departing within the next year, so don’t wait around. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Los Angeles - Ontario Intl. Airport (ONT) to San Francisco Airport?
We get that things crop up unexpectedly, so we’ve made it as easy as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Los Angeles - Ontario Intl. Airport (ONT) to San Francisco Intl. Airport (SFO) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for ONT to SFO flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Ontario Airport to San Francisco Airport?
It’s only 590 kilometres between Ontario and San Francisco. It’s quite possible that you’ll spend more time getting to and from the airport than you will actually flying!
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to San Francisco Airport?
With 121 monthly flights from Ontario Airport to SFO, United Airlines (UA) is a top choice. Frontier Airlines (F9) is also worth checking out. It operates 21 flights per month. Between these two airlines, you’ll be able to find a good deal from Ontario to San Francisco.
Are Los Angeles - Ontario Intl. Airport (ONT) to San Francisco Airport flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes nab a bargain, with some of the cheapest fares from Ontario Airport to San Francisco Airport showing up a few weeks before the date of departure. If you’d rather book ahead of time, Expedia compares and updates all the best flight deals continually — as early as 12 months in advance in some cases. It does depend on the carrier though, as not all airlines issue prices so far in advance.
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