S$158 Cheap Flights from San Francisco to Ontario

View S$158 flight on Thu, 7 May, 2026Opens in a new window

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

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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$158 for one-way flights and S$315 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$315 Return, found 2 days ago
S$315
Return
found 2 days ago
Select United flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$315 found 2 days ago
United
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$405 Return, found 2 days ago
S$405
Return
found 2 days ago
Select United flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$405 found 2 days ago
American Airlines
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$412 Return, found 2 days ago
S$412
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$412 found 2 days ago
American Airlines
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$436 Return, found 2 days ago
S$436
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$436 found 2 days ago
American Airlines
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$449 Return, found 2 days ago
S$449
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$449 found 2 days ago
American Airlines
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$457 Return, found 2 days ago
S$457
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$457 found 2 days ago
American Airlines
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$475 Return, found 2 days ago
S$475
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$475 found 2 days ago
American Airlines
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$482 Return, found 2 days ago
S$482
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$482 found 2 days ago
American Airlines
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$493 Return, found 2 days ago
S$493
Return
found 2 days ago
Select American Airlines flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$493 found 2 days ago
Delta
Thu, 7 May - Mon, 11 May
SFO
San Francisco
ONT
Ontario
S$551 Return, found 2 days ago
S$551
Return
found 2 days ago
Select Delta flight, departing Thu, 7 May from San Francisco to Ontario, returning Mon, 11 May, priced at S$551 found 2 days ago

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city centre is 42 minutes. Flights from S$380
SNA
John Wayne
Cheapest
Average driving time to city centre42 min
Flights from S$380

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$315. 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.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$315
Distance
582 km
Average flight time
1 hour 35 mins

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