S$134 Cheap Flights from Ontario to San Francisco

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

Prices were available within the past 7 days and start at S$134 for one-way flights and S$73 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, 31 Jul - Tue, 13 Aug
ONT
Ontario
SFO
San Francisco
S$73 Return, found 4 days ago
S$73
Return
found 4 days ago
Select Frontier Airlines flight, departing Wed, 31 Jul from Ontario to San Francisco, returning Tue, 13 Aug, priced at S$73 found 4 days ago
Frontier Airlines
Sat, 6 Jul - Tue, 16 Jul
ONT
Ontario
SFO
San Francisco
S$79 Return, found 4 days ago
S$79
Return
found 4 days ago
Select Frontier Airlines flight, departing Sat, 6 Jul from Ontario to San Francisco, returning Tue, 16 Jul, priced at S$79 found 4 days ago
Frontier Airlines
Wed, 24 Jul - Sun, 11 Aug
ONT
Ontario
SFO
San Francisco
S$84 Return, found 4 days ago
S$84
Return
found 4 days ago
Select Frontier Airlines flight, departing Wed, 24 Jul from Ontario to San Francisco, returning Sun, 11 Aug, priced at S$84 found 4 days ago
Frontier Airlines
Tue, 25 Jun - Fri, 28 Jun
ONT
Ontario
SFO
San Francisco
S$86 Return, found 5 days ago
S$86
Return
found 5 days ago
Select Frontier Airlines flight, departing Tue, 25 Jun from Ontario to San Francisco, returning Fri, 28 Jun, priced at S$86 found 5 days ago
Frontier Airlines
Fri, 5 Jul - Tue, 16 Jul
ONT
Ontario
SFO
San Francisco
S$87 Return, found 4 days ago
S$87
Return
found 4 days ago
Select Frontier Airlines flight, departing Fri, 5 Jul from Ontario to San Francisco, returning Tue, 16 Jul, priced at S$87 found 4 days ago
Frontier Airlines
Sat, 22 Jun - Fri, 28 Jun
ONT
Ontario
SFO
San Francisco
S$91 Return, found 5 days ago
S$91
Return
found 5 days ago
Select Frontier Airlines flight, departing Sat, 22 Jun from Ontario to San Francisco, returning Fri, 28 Jun, priced at S$91 found 5 days ago
Frontier Airlines
Sun, 21 Jul - Sun, 11 Aug
ONT
Ontario
SFO
San Francisco
S$92 Return, found 4 days ago
S$92
Return
found 4 days ago
Select Frontier Airlines flight, departing Sun, 21 Jul from Ontario to San Francisco, returning Sun, 11 Aug, priced at S$92 found 4 days ago
Frontier Airlines
Fri, 5 Jul - Mon, 15 Jul
ONT
Ontario
SFO
San Francisco
S$93 Return, found 4 days ago
S$93
Return
found 4 days ago
Select Frontier Airlines flight, departing Fri, 5 Jul from Ontario to San Francisco, returning Mon, 15 Jul, priced at S$93 found 4 days ago
Frontier Airlines
Tue, 18 Jun - Sun, 7 Jul
ONT
Ontario
SFO
San Francisco
S$98 Return, found 4 days ago
S$98
Return
found 4 days ago
Select Frontier Airlines flight, departing Tue, 18 Jun from Ontario to San Francisco, returning Sun, 7 Jul, priced at S$98 found 4 days ago
Frontier Airlines
Sun, 30 Jun - Tue, 16 Jul
ONT
Ontario
SFO
San Francisco
S$100 Return, found 4 days ago
S$100
Return
found 4 days ago
Select Frontier Airlines flight, departing Sun, 30 Jun from Ontario to San Francisco, returning Tue, 16 Jul, priced at S$100 found 4 days ago
Ontario to San Francisco route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
San Francisco Intl.
Airlines serving
United
Return price
S$72
Distance
582 km

Flights from Los Angeles to San Francisco

When looking for plane tickets from Los Angeles to San Francisco, the ease and convenience of using Expedia simply can’t be beat. With tons of departure points and flights options from the top airline carriers, Expedia gives you the widest array of cheap flights to San Francisco. Look for ONT to SFO airfare with the assurance that you have the largest online travel agency working for you.

Expedia lets you search across the largest number of airlines and San Francisco flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Los Angeles San Francisco flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Los Angeles to San Francisco trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your San Francisco flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Los Angeles to San Francisco with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

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 S$73. 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.
Ontario Airports

Los Angeles

Los Angeles Intl. to San Francisco
S$89.40

Burbank

John Wayne to San Francisco
S$239.90

Orange County

John Wayne to San Francisco
S$319.50
*Available to Expedia members.