S$79 Cheap Flights from San Francisco to Ontario

View S$79 flight on Thu, 24 Apr,2025Opens in a new window

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

Prices were available within the past 7 days and start at S$79 for one-way flights and S$158 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, 3 May - Sun, 4 May
SFO
San Francisco
ONT
Ontario
S$158 Return, just found
S$158
Return
just found
Select United flight, departing Sat, 3 May from San Francisco to Ontario, returning Sun, 4 May, priced at S$158 just found
United
Tue, 1 Apr - Sun, 6 Apr
SFO
San Francisco
ONT
Ontario
S$170 Return, found 3 days ago
S$170
Return
found 3 days ago
Select United flight, departing Tue, 1 Apr from San Francisco to Ontario, returning Sun, 6 Apr, priced at S$170 found 3 days ago
United
Tue, 1 Apr - Wed, 2 Apr
SFO
San Francisco
ONT
Ontario
S$183 Return, found 3 days ago
S$183
Return
found 3 days ago
Select United flight, departing Tue, 1 Apr from San Francisco to Ontario, returning Wed, 2 Apr, priced at S$183 found 3 days ago
United
Tue, 27 May - Fri, 13 Jun
SFO
San Francisco
ONT
Ontario
S$185 Return, found 2 hours ago
S$185
Return
found 2 hours ago
Select United flight, departing Tue, 27 May from San Francisco to Ontario, returning Fri, 13 Jun, priced at S$185 found 2 hours ago
United
Tue, 1 Apr - Tue, 22 Apr
SFO
San Francisco
ONT
Ontario
S$198 Return, found 2 hours ago
S$198
Return
found 2 hours ago
Select United flight, departing Tue, 1 Apr from San Francisco to Ontario, returning Tue, 22 Apr, priced at S$198 found 2 hours ago
United
Mon, 31 Mar - Sun, 6 Apr
SFO
San Francisco
ONT
Ontario
S$237 Return, found 3 days ago
S$237
Return
found 3 days ago
Select United flight, departing Mon, 31 Mar from San Francisco to Ontario, returning Sun, 6 Apr, priced at S$237 found 3 days ago
United
Wed, 9 Apr - Sun, 27 Apr
SFO
San Francisco
ONT
Ontario
S$238 Return, found 2 hours ago
S$238
Return
found 2 hours ago
Select United flight, departing Wed, 9 Apr from San Francisco to Ontario, returning Sun, 27 Apr, priced at S$238 found 2 hours ago
United
Sat, 29 Mar - Tue, 1 Apr
SFO
San Francisco
ONT
Ontario
S$250 Return, found 3 days ago
S$250
Return
found 3 days ago
Select United flight, departing Sat, 29 Mar from San Francisco to Ontario, returning Tue, 1 Apr, priced at S$250 found 3 days ago
American Airlines
Sat, 3 May - Sun, 4 May
SFO
San Francisco
ONT
Ontario
S$253 Return, just found
S$253
Return
just found
Select American Airlines flight, departing Sat, 3 May from San Francisco to Ontario, returning Sun, 4 May, priced at S$253 just found
Delta
Sat, 3 May - Sun, 4 May
SFO
San Francisco
ONT
Ontario
S$398 Return, just found
S$398
Return
just found
Select Delta flight, departing Sat, 3 May from San Francisco to Ontario, returning Sun, 4 May, priced at S$398 just found
San Francisco to Ontario route information
Origin airport
San Francisco Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
United
Return price
S$150
Distance
582 km

Perfect flights from San Francisco to Ontario

Your Journey from San Francisco to Ontario

Start your unforgettable journey with Expedia. Our broad selection of flights from San Francisco to Ontario caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including United, American Airlines, Delta, Hawaiian Airlines. Our selection of flights from San Francisco Intl. to Los Angeles - Ontario Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with San Francisco to Ontario Flights

Experience the joy of finding cheap flights from San Francisco Intl. to Los Angeles - Ontario Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$79 and roundtrip prices from S$158*.
 

Pre-Flight Essentials

Ensure a smooth journey from San Francisco to Ontario with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Ontario

Picture yourself stepping off the plane in Ontario and immersing yourself in the unique atmosphere of Los Angeles. From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your San Francisco to Ontario Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from San Francisco to Ontario.
 

Beyond the Flight – Exploring Ontario

With Expedia, your adventure extends beyond the flight. Explore Ontario at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from San Francisco to Ontario with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from San Francisco to Ontario with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from San Francisco Airport to Ontario Airport?
Start packing your bags, because round-trip journeys from San Francisco Intl. Airport (SFO) to Ontario Airport start from S$158. That’s based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can increase quickly, so book today to lock in the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from San Francisco Airport to Ontario Airport?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from SFO to Ontario Airport 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 San Francisco Intl. Airport (SFO) to ONT flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from San Francisco Intl. Airport (SFO) to Ontario Airport?
With a flight distance of 590 kilometres, it’s just a short hop from SFO to Los Angeles - Ontario Intl. Airport (ONT). It might be a quick flight, but it’s still worth bringing along something to keep you busy on board.
Which airlines fly direct from San Francisco Intl. Airport (SFO) to ONT?
United Airlines (UA) is a popular choice. It operates 121 flights from SFO to ONT each month. Another carrier operating on this route is Frontier Airlines (F9). You’ll have 21 flights every month to take your pick of.
Are SFO to ONT flight tickets cheaper when they're purchased at the last minute?
Booking last minute from San Francisco Airport to Los Angeles - Ontario Intl. Airport (ONT) can be hit-or-miss. You may be able to score a bargain, but you could also miss out completely! If you’d rather start your travel planning early, Expedia compares flight deals up to 12 months in advance. Just bear in mind that not all airlines advertise their prices that far in advance. Our top tip? Check back often as updates are made frequently.
*Available to Expedia members.