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

SFO — ONT
Aug 14 — Aug 211

The best prices from San Francisco to Ontario are usually found in October or February, booked 59 days in advance, depart on a Monday or Friday and return on a Wednesday

How to find the cheapest flight from San Francisco (SFO) to Ontario (ONT)

All the information you need to plan the best SFO to ONT flight in 2022: compare San Francisco to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.

SFO - ONT

Price

$72 - $275

ONT

Temperature

53.6 - 78.8 °F

ONT

Rainfall

0.1 - 3.4 inches

Popular inJuneHigh demand for flights, 52% potential price rise
Cheapest inOctoberBest time to find cheap flights, 46% potential price drop
Round-trip from$72From San Francisco to Ontario
One-way from$22One-way flight from San Francisco to Ontario

What is the cheapest day to fly round-trip from San Francisco to Ontario?

Saturday flights are generally found to be more expensive for flights from San Francisco to Ontario. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Ontario.

How far in advance should I book a flight from San Francisco to Ontario?

Find a great deal and save up to 83% by booking at least 60 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from San Francisco to Ontario within the next two weeks, with the cheapest ticket starting at $146.

What is the cheapest month to fly from San Francisco to Ontario?

Flights from San Francisco to Ontario lean towards being more expensive in June. Prices are generally better when you fly from San Francisco to Ontario in September, with the cheapest ticket starting at $73.

When is the cheapest time to fly from San Francisco to Ontario (SFO - ONT)?

Unlike at noon, when flights are generally more expensive, you can save up to 55% on flights from San Francisco to Ontario by exploring options for tickets in the morning.

Cheap flights from San Francisco to Ontario in August, September 2022

The best prices found for SFO to ONT flights for August, September
Sep 8 - Sep 10
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$43

Frontier

Pick Dates

Deal found 8/7/22

Sep 13 - Sep 20
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$44

Frontier

Pick Dates

Deal found 8/7/22

Sep 12 - Sep 12
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$46

Frontier

Pick Dates

Deal found 8/8/22

San Francisco to Ontario 2022 flight deals

Cheap flights to Ontario from San Francisco found for this year
Sep 8 - Sep 10
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$43

Frontier

Pick Dates

Deal found 8/7/22

Sep 13 - Sep 20
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$44

Frontier

Pick Dates

Deal found 8/7/22

Sep 12 - Sep 12
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$46

Frontier

Pick Dates

Deal found 8/8/22

Cheap Frontier flights from San Francisco to Ontario

Sep 8 - Sep 10
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$43

Frontier

Pick Dates

Deal found 8/7/22

Sep 13 - Sep 20
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$44

Frontier

Pick Dates

Deal found 8/7/22

Sep 12 - Sep 12
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$46

Frontier

Pick Dates

Deal found 8/8/22

Cheap United Airlines flights from San Francisco to Ontario

Aug 19 - Aug 23
SFO

San Francisco

ONT

Ontario

Nonstop

1h 31m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 22m
$229

United Airlines

Pick Dates

Deal found 8/6/22

Aug 16 - Oct 31
SFO

San Francisco

ONT

Ontario

Nonstop

1h 35m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 28m
$239

United Airlines

Pick Dates

Deal found 8/8/22

Aug 14 - Sep 13
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 24m
$245

United Airlines

Pick Dates

Deal found 8/8/22

Non-stop flights to Ontario from San Francisco

Save time with San Francisco to Ontario direct flight deals
Sep 8 - Sep 10
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$43

Frontier

Pick Dates

Deal found 8/7/22

Sep 13 - Sep 20
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$44

Frontier

Pick Dates

Deal found 8/7/22

Sep 12 - Sep 12
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
ONT

Ontario

SFO

San Francisco

Nonstop

1h 23m
$46

Frontier

Pick Dates

Deal found 8/8/22

Last minute flights from San Francisco to Ontario

Late deals on return flights to Ontario from San Francisco, departing today and this week
Aug 19 - Aug 23
SFO

San Francisco

ONT

Ontario

1 stop

8h 14m
ONT

Ontario

SFO

San Francisco

1 stop

8h 52m
$155

Frontier

Pick Dates

Deal found 8/6/22

Aug 19 - Aug 23
SFO

San Francisco

ONT

Ontario

1 stop

8h 14m
ONT

Ontario

SFO

San Francisco

1 stop

8h 52m
$156

Frontier

Pick Dates

Deal found 8/9/22

Aug 19 - Aug 22
SFO

San Francisco

ONT

Ontario

1 stop

8h 14m
ONT

Ontario

SFO

San Francisco

1 stop

8h 15m
$178

Frontier

Pick Dates

Deal found 8/7/22

One-way flights to Ontario from San Francisco

The cheapest one-way flights from San Francisco to Ontario
Sep 13
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
$22

Frontier

Pick Dates

Deal found 8/8/22

Sep 8
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
$23

Frontier

Pick Dates

Deal found 8/9/22

Sep 7
SFO

San Francisco

ONT

Ontario

Nonstop

1h 29m
$24

Frontier

Pick Dates

Deal found 8/8/22

Related info for your journey

Useful info, stats and facts about San Francisco to Ontario flights.

What airports do I use to fly from San Francisco to Ontario?

Ontario is the airport most travelers will use when flying to Ontario from San Francisco. Booking flights from San Francisco (SFO) to Ontario (ONT) should be relatively easy as there are 6 daily flights to Ontario from 12 different airlines. 1h 25m is how long a flight from San Francisco to Ontario will take if you book a nonstop flight.

Which airlines flying from San Francisco to Ontario have flexible cancellations due to COVID-19?

Some of our airline partners flying from San Francisco to Ontario have new flexible policies in place due to COVID-19. United Airlines, Frontier, and Southwest are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like United Airlines with this kind of flexibility.

Can I find flights from San Francisco to Ontario for under $100 on Cheapflights?

Yes, there are multiple flights from San Francisco to Ontario for under $100. The cheapest flight booked recently is on Frontier for just $43, but on average you can expect to pay $57.

Are there nonstop flights from San Francisco to Ontario for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from San Francisco to Ontario under $100. A good price for a nonstop flight from San Francisco to Ontario is less than $55.

Are there last-minute flights available from San Francisco to Ontario for under $200?

There are currently 20+ open flights from San Francisco to Ontario within the next 7 days for less than $200.

What days are nonstop flights available from San Francisco to Ontario?

Nonstop flights can be found on the following days: Sunday, Wednesday, Thursday, Friday, Saturday.

How popular is this San Francisco to Ontario flight route?

Within the past month, 32 users have taken a look at flights from San Francisco to Ontario.

How many flights depart from San Francisco to Ontario on average per day?

Per day, 9 flights depart from San Francisco to Ontario on average.
Morning (6am - Noon) - 22% of flight departures
Evening (6pm - Midnight) - 78% of flight departures

How long is the flight from San Francisco to Ontario?

A quick flight from San Francisco to Ontario can take about 1h 29m. Frontier provides one of the quickest options available for as low as $43. San Francisco and Ontario are separated by a distance of 364 mi. All flights are typically nonstop.

What is the cheapest airline to fly from San Francisco to Ontario round-trip?

Flying on Frontier is currently your cheapest option to Ontario, with prices starting at $43. You may be able to fly from San Francisco to Ontario for 67% less than the average price by searching for this airline.

What are the most popular airlines that fly from San Francisco to Ontario?

Before booking your flight from San Francisco to Ontario check out the most popular airlines for this route: Undisclosed Carrier, American Airlines or Alaska Airlines.

What are the most reliable airlines from San Francisco to Ontario?

No one likes to see their flight delayed. When booking a flight from San Francisco to Ontario consider choosing SkyWest Airlines (96%), Air Canada (89%) or United Airlines (81%) as they are the most reliable in getting you off to your destination on time.

What are the cheapest flights from San Francisco to Ontario?

On average you can expect to pay $344 for a flight from San Francisco to Ontario. The cheapest flight overall is $53 while the most popular route, (San Francisco - Ontario) is currently priced at $48.

Alternative routes for San Francisco to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from San Francisco to Ontario

The chart below displays the airlines Cheapflights users traveling from San Francisco to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$10Average$16FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
FrontierCheapest$29Average$70FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Alaska AirlinesCheapest$38Average$172FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
JetBlueCheapest$44Average$80FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search JetBlue flights
Breeze AirwaysCheapest$78Average$104FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Breeze Airways flights
United AirlinesCheapest$78Average$245FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
DeltaCheapest$93Average$135FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
American AirlinesCheapest$120Average$289FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
JSXCheapest$147Average$316FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search JSX flights

Hourly flight availability from San Francisco to Ontario

See what time of day planes typically take off from San Francisco to Ontario
1%of flight departuresEarly morningMidnight to 6 am
53%of flight departuresMorning6 am to noon
28%of flight departuresAfternoonNoon to 6 pm
18%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from San Francisco to Ontario

See how many times per day planes take to the skies headed from San Francisco to Ontario
Sunday7daily flights
Monday7daily flights
Tuesday8daily flights
Wednesday8daily flights
Thursday5daily flights
Friday7daily flights
Saturday6daily flights