Cheap Flights from San Francisco (SFO) to Ontario (ONT) from HK$541~

View HK$541 flight on Mon, 11 Aug 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at HK$541 for one-way flights and HK$1,081 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 27 Nov - Thu, 4 Dec
SFO
San Francisco
ONT
Ontario
HK$1,081 Return, found 6 days ago
HK$1,081
Return
found 6 days ago
Select United flight, departing Thu, 27 Nov from San Francisco to Ontario, returning Thu, 4 Dec, priced at HK$1,081 found 6 days ago
United
Sat, 30 Aug - Tue, 16 Sep
SFO
San Francisco
ONT
Ontario
HK$1,242 Return, found 9 hours ago
HK$1,242
Return
found 9 hours ago
Select United flight, departing Sat, 30 Aug from San Francisco to Ontario, returning Tue, 16 Sep, priced at HK$1,242 found 9 hours ago
United
Mon, 24 Nov - Thu, 27 Nov
SFO
San Francisco
ONT
Ontario
HK$1,371 Return, found 6 days ago
HK$1,371
Return
found 6 days ago
Select United flight, departing Mon, 24 Nov from San Francisco to Ontario, returning Thu, 27 Nov, priced at HK$1,371 found 6 days ago
United
Thu, 7 Aug - Sat, 9 Aug
SFO
San Francisco
ONT
Ontario
HK$1,479 Return, found 4 days ago
HK$1,479
Return
found 4 days ago
Select United flight, departing Thu, 7 Aug from San Francisco to Ontario, returning Sat, 9 Aug, priced at HK$1,479 found 4 days ago
United
Mon, 4 Aug - Tue, 5 Aug
SFO
San Francisco
ONT
Ontario
HK$1,866 Return, found 1 day ago
HK$1,866
Return
found 1 day ago
Select United flight, departing Mon, 4 Aug from San Francisco to Ontario, returning Tue, 5 Aug, priced at HK$1,866 found 1 day ago
United
Fri, 15 Aug - Mon, 18 Aug
SFO
San Francisco
ONT
Ontario
HK$2,349 Return, found 1 day ago
HK$2,349
Return
found 1 day ago
Select United flight, departing Fri, 15 Aug from San Francisco to Ontario, returning Mon, 18 Aug, priced at HK$2,349 found 1 day ago
American Airlines
Sat, 2 Aug - Mon, 4 Aug
SFO
San Francisco
ONT
Ontario
HK$2,493 Return, found 3 days ago
HK$2,493
Return
found 3 days ago
Select American Airlines flight, departing Sat, 2 Aug from San Francisco to Ontario, returning Mon, 4 Aug, priced at HK$2,493 found 3 days ago
United
Fri, 15 Aug - Mon, 18 Aug
SFO
San Francisco
ONT
Ontario
HK$2,586 Return, found 1 day ago
HK$2,586
Return
found 1 day ago
Select United flight, departing Fri, 15 Aug from San Francisco to Ontario, returning Mon, 18 Aug, priced at HK$2,586 found 1 day ago
American Airlines
Thu, 14 Aug - Mon, 18 Aug
SFO
San Francisco
ONT
Ontario
HK$2,622 Return, found 1 day ago
HK$2,622
Return
found 1 day ago
Select American Airlines flight, departing Thu, 14 Aug from San Francisco to Ontario, returning Mon, 18 Aug, priced at HK$2,622 found 1 day ago
Delta
Thu, 14 Aug - Mon, 18 Aug
SFO
San Francisco
ONT
Ontario
HK$4,309 Return, found 1 day ago
HK$4,309
Return
found 1 day ago
Select Delta flight, departing Thu, 14 Aug from San Francisco to Ontario, returning Mon, 18 Aug, priced at HK$4,309 found 1 day ago

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

September is typically the cheapest month to fly

From HK$376 - HK$840 per traveller.

Graph displaying average flight prices per month

San Francisco to Ontario route information
Origin airport
San Francisco Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
American Airlines, Delta, United
Return price
HK$1,081
Distance
582 km
Average flight time
1 hour 28 mins

Flights from San Francisco to Los Angeles

Book cheap flights from San Francisco (SFO) to Los Angeles (ONT) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from San Francisco (SFO) to Los Angeles (ONT) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be 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 San Francisco (SFO) to Los Angeles (ONT) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Los Angeles flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Los Angeles and things to do in Los Angeles for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Los Angeles more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Los Angeles is HK$541 now!

 

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 HK$1,081. 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 kilometers, 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.

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