Lowest Prices
Uncover the best deals on Ontario to San Francisco flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ONT - SFO Flights
Useful information for finding best airline tickets from Ontario International to San Francisco International on your next trip.
Cheapest Round Trip Flight
$177
Alaska Airlines
• nonstop
•
Jun 28 – Jul 06
The cheapest round trip flight from Ontario to San Francisco (ONT-SFO-ONT) is currently $177
Cheapest One way Flight
$164
Southwest Airlines
• 1 stop
• 6h 45m
Jun 24
The cheapest one way flight from Ontario to San Francisco (ONT-SFO) is currently $164
Cheapest Direct Flight
$177
Alaska Airlines
• nonstop
•
Jun 28
The cheapest nonstop flight from Ontario to San Francisco (ONT-SFO) is currently $177
Fastest Flight
6h 45m
The fastest nonstop flight from Ontario to San Francisco (ONT-SFO) takes 6h 45m
Top Airlines Flying from Ontario to San Francisco
Latest Flight Deals from Ontario (ONT) to San Francisco (SFO)
Compare and book low fare round-trip air tickets from Ontario to San Francisco. Ideal for travelers with confirmed return itineraries.
Jun 28 - Jul 06, Economy
Ontario → San Francisco
- • nonstop
Ontario → San Francisco
- • nonstop
Alaska Airlines
Jun 28 - Jul 06, Economy
Ontario → San Francisco
- • nonstop
Ontario → San Francisco
- • nonstop
American Airlines
Jun 28 - Jul 06, Economy
Ontario → San Francisco
- • nonstop
Ontario → San Francisco
- • nonstop
Alaska Airlines
Jun 28 - Jul 06, Economy
Ontario → San Francisco
- • nonstop
Ontario → San Francisco
- • nonstop
United Airlines
Jun 28 - Jul 06, Economy
Ontario → San Francisco
24h 18m
11:58 AM - 8:51 AM • 1 stop
Ontario → San Francisco
2h 14m
9:33 AM - 11:07 AM • nonstop
Frontier Airlines
Explore competitive one-way airfare options for ONT - SFO flights. Best suited for flexible or open-ended travel plans.
Flying to San Francisco soon? We've surfaced some of the most affordable last-minute flights from Ontario to San Francisco, ideal for urgent plans or spontaneous trips.
Looking for the fastest way to San Francisco? These direct flight options from ONT to SFO offer both convenience and value—no layovers, just straight to your destination.
Jun 28 - Jul 06, Economy
Ontario → San Francisco
- • nonstop
Ontario → San Francisco
- • nonstop
Alaska Airlines
Jun 28 - Jul 06, Economy
Ontario → San Francisco
- • nonstop
Ontario → San Francisco
- • nonstop
Frontier Airlines
Jun 28 - Jul 06, Economy
Ontario → San Francisco
- • nonstop
Ontario → San Francisco
- • nonstop
American Airlines
Jun 28 - Jul 06, Economy
Ontario → San Francisco
- • nonstop
Ontario → San Francisco
- • nonstop
American Airlines
Jun 28 - Jul 06, Economy
Ontario → San Francisco
- • nonstop
Ontario → San Francisco
- • nonstop
Alaska Airlines
FAQs on Ontario to San Francisco Flights
What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to SFO?
The most popular airline flying from Ontario to San Francisco are
Can I fly from ONT to SFO non-stop?
Yes, you can fly ONT to SFO non-stop on
Which airlines fly nonstop between Ontario and San Francisco?
The non-stop flights between Ontario and San Francisco are .
What’s the earliest departure time from ONT to SFO Airport?
The earliest flight leaves ONT at 5:30 am and lands in SFO - San Francisco International
What are the airports in San Francisco?
SFO
Can I make changes to my Ontario to San Francisco flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ONT to SFO?
Read the fare rules of the Ontario to San Francisco air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Ontario and San Francisco?
operate flights between Ontario and San Francisco
How long does a flight from Ontario to San Francisco take?
It takes approximately 1 hour to fly non-stop from ONT to SFO, which is 363.46 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to San Francisco (SFO) ?
In the past couple of days, the cheapest tickets to SFO from ONT were found on WN : USD 164
Do I need a passport to fly between ONT and SFO?
No
What’s the latest departure time from ONT to SFO ?
The last flight leaves ONT at 6:2200 pm
Ontario (ONT) to San Francisco (SFO): Airport Information
| Origin Airport | Ontario International , Ontario, US |
| Destination Airport | San Francisco International , San Francisco, US |
| Distance | 363 miles |
More Flight Options for Ontario (ONT) and San Francisco (SFO)
Flights from Ontario (ONT)
to Seattle (SEA)
Flights from Ontario (ONT)
to Seattle (SEA)
Flights from Ontario (ONT)
to Las Vegas (LAS)
Flights from Ontario (ONT)
to Las Vegas (LAS)
Flights from Ontario (ONT)
to Honolulu (HNL)
Flights from Ontario (ONT)
to Honolulu (HNL)
Flights from Ontario (ONT)
to Houston (HOU)
Flights from Ontario (ONT)
to St Louis (STL)
Flights from Ontario (ONT)
to St Louis (STL)
Flights from Ontario (ONT)
to Sacramento (SMF)
Flights from Ontario (ONT)
to Sacramento (SMF)
Flights from Ontario (ONT)
to Portland (PDX)
Flights from Ontario (ONT)
to Portland (PDX)
Flights from Ontario (ONT)
to Orlando (MCO)
Flights from Ontario (ONT)
to Orlando (MCO)
Flights from Ontario (ONT)
to Dallas (DFW)
Flights from Ontario (ONT)
to Dallas (DFW)
Flights from Ontario (ONT)
to Knoxville (TYS)
Flights from Ontario (ONT)
to Knoxville (TYS)
Flights from Ontario (ONT)
to Tampa (TPA)
Flights from Chicago (ORD)
to San Francisco (SFO)
Flights from Burbank (BUR)
to San Francisco (SFO)
Flights from Washington (IAD)
to San Francisco (SFO)
Flights from Washington (IAD)
to San Francisco (SFO)
Flights from Newark (EWR)
to San Francisco (SFO)
Flights from Newark (EWR)
to San Francisco (SFO)
Flights from Tampa (TPA)
to San Francisco (SFO)
Flights from Charlotte (CLT)
to San Francisco (SFO)
Flights from Seattle (SEA)
to San Francisco (SFO)
Flights from Boston (BOS)
to San Francisco (SFO)
Flights from New York (LGA)
to San Francisco (SFO)
Flights from Atlanta (ATL)
to San Francisco (SFO)
Flights from Dallas (DFW)
to San Francisco (SFO)
Flights from Dallas (DFW)
to San Francisco (SFO)
Flights from Detroit (DTW)
to San Francisco (SFO)
Flights from Raleigh/Durham (RDU)
to San Francisco (SFO)
Flights from New York (JFK)
to San Francisco (SFO)
Flights from Palm Springs (PSP)
to San Francisco (SFO)
Flights from Miami (MIA)
to San Francisco (SFO)
Flights from Philadelphia (PHL)
to San Francisco (SFO)
Cheap flights to North America (NA)
Cheap flights to United States (US)
Cheap flights to California (US-CA)
Cheap flights from North America (NA)
Cheap flights from United States (US)
Cheap flights from California (US-CA)
Flights to Ontario (ONT)
Flights to Ontario (ONT)
Flights to San Francisco (SFO)
Flights from Ontario (ONT)
Flights from San Francisco (SFO)
Flights from San Francisco (SFO)
to Ontario (ONT)
Flights from San Francisco (SFO)
to Ontario (ONT)
Why Fareleaders for ONT to SFO Plane Tickets
New Deals Everyday
Get the best prices on ONT to SFO flights—we update our fares daily so you never miss a saving.
No Service Fees
Compare hundreds of Ontario to San Francisco flights and secure the best deals—we never add any service fees.