฿3,215 Cheap Flights from San Francisco (SFO) to Ontario (ONT)

View ฿3,215 flight on Tue, 9 Dec 2025Opens in a new window

Popular airlines from San Francisco International Airport (SFO) to Los Angeles - Ontario Intl. Airport (ONT)

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

Prices were available within the past 7 days and start at ฿3,215 for one-way flights and ฿8,535 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿8,535 Return, found 4 days ago
฿8,535
Return
found 4 days ago
Select United flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿8,535 found 4 days ago
American Airlines
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿10,000 Return, found 4 days ago
฿10,000
Return
found 4 days ago
Select American Airlines flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿10,000 found 4 days ago
United
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿10,810 Return, found 4 days ago
฿10,810
Return
found 4 days ago
Select United flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿10,810 found 4 days ago
American Airlines
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿11,625 Return, found 4 days ago
฿11,625
Return
found 4 days ago
Select American Airlines flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿11,625 found 4 days ago
United
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿12,110 Return, found 4 days ago
฿12,110
Return
found 4 days ago
Select United flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿12,110 found 4 days ago
United
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿12,440 Return, found 4 days ago
฿12,440
Return
found 4 days ago
Select United flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿12,440 found 4 days ago
United
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿12,600 Return, found 4 days ago
฿12,600
Return
found 4 days ago
Select United flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿12,600 found 4 days ago
American Airlines
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿13,250 Return, found 4 days ago
฿13,250
Return
found 4 days ago
Select American Airlines flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿13,250 found 4 days ago
United
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿13,575 Return, found 4 days ago
฿13,575
Return
found 4 days ago
Select United flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿13,575 found 4 days ago
Delta
Fri, 5 Dec - Sun, 7 Dec
SFO
San Francisco
ONT
Ontario
฿16,280 Return, found 4 days ago
฿16,280
Return
found 4 days ago
Select Delta flight, departing Fri, 5 Dec from San Francisco to Ontario, returning Sun, 7 Dec, priced at ฿16,280 found 4 days ago

Find the cheapest month to fly from San Francisco (SFO) to Ontario (ONT)

January is typically the cheapest month to fly

From ฿1,562 - ฿5,407 per traveller.
Flight from San Francisco to Ontario route information
Origin airport
San Francisco Intl.
Destination airport
Los Angeles - Ontario Intl.
Return price
฿8,535
Distance
582 km
Average flight time
1 hour 22 mins

Perfect flights from San Francisco to Ontario

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from San Francisco to Ontario. 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 , 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 San Francisco Intl. to Los Angeles - Ontario Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿3,215 and roundtrip prices from ฿8,535. 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 Los Angeles - Ontario Intl. and explore 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 to travel arrangements today and embark on the journey of a lifetime in Ontario.

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 ฿8,535. 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.

Explore a world of travel with Expedia

Ontario Airports

Los Angeles

San Francisco to Los Angeles Intl.
฿3,825.00

Orange County

San Francisco to John Wayne
฿14,100.00

Burbank

*Available to Expedia members.