Q: Can I fly back to San Francisco from Ontario?

Returning to San Francisco from Ontario COVID-19 testing requirements Visitors from Ontario are not required to present a negative COVID-19 PCR test or antigen result upon entering San Francisco. Quarantine requirements Visitors from Ontario are not required to quarantine after entering San Francisco.

Question 1

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

Accepted Answer

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

Question 2

How popular is this San Francisco to Ontario flight route?

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

How long is the flight from San Francisco to Ontario?

Accepted Answer

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.

Question 5

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

Accepted Answer

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.

Question 6

Can I fly to Ontario from San Francisco right now?

Accepted Answer

Information is based on travel restrictions for travel to Ontario within the United States

Most visitors from San Francisco need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.

COVID-19 testing requirements
Visitors from San Francisco are not required to present a negative COVID-19 PCR test or antigen result upon entering Ontario.

Quarantine requirements
Visitors from San Francisco are not required to quarantine after entering Ontario.

Question 7

Can I fly back to San Francisco from Ontario?

Accepted Answer

Returning to San Francisco from Ontario

COVID-19 testing requirements
Visitors from Ontario are not required to present a negative COVID-19 PCR test or antigen result upon entering San Francisco.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering San Francisco.

Question 8

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

Accepted Answer

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.

Question 9

What are the cheapest flights from San Francisco to Ontario?

Accepted Answer

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.

Question 10

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

Accepted Answer

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.

Question 11

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

Accepted Answer

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.

Question 12

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

Accepted Answer

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.

Question 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

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.

Question 15

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

Accepted Answer

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.

Question 16

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

Accepted Answer

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.

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

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

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
Juneyao Airlines	Cheapest$10	Average$16	FlexibilityNo cancel fee	On-time66%	COVID-19 safety	Search Juneyao Airlines flights
Frontier	Cheapest$29	Average$70	FlexibilityNo cancel fee	On-time62%	COVID-19 safety	Search Frontier flights
Alaska Airlines	Cheapest$38	Average$172	FlexibilityNo cancel fee	On-time75%	COVID-19 safety	Search Alaska Airlines flights
JetBlue	Cheapest$44	Average$80	FlexibilityNo cancel fee	On-time62%	COVID-19 safety	Search JetBlue flights
Breeze Airways	Cheapest$78	Average$104	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search Breeze Airways flights
United Airlines	Cheapest$78	Average$245	FlexibilityNo cancel fee	On-time69%	COVID-19 safety	Search United Airlines flights
Delta	Cheapest$93	Average$135	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search Delta flights
American Airlines	Cheapest$120	Average$289	FlexibilityNo cancel fee	On-time71%	COVID-19 safety	Search American Airlines flights
JSX	Cheapest$147	Average$316	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search JSX flights

1%of flight departures	Early morningMidnight to 6 am
53%of flight departures	Morning6 am to noon
28%of flight departures	AfternoonNoon to 6 pm
18%of flight departures	Evening6 pm to midnight

Sunday	7daily flights
Monday	7daily flights
Tuesday	8daily flights
Wednesday	8daily flights
Thursday	5daily flights
Friday	7daily flights
Saturday	6daily flights

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

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.

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

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

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

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

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

The best prices found for SFO to ONT flights for August, September

San Francisco to Ontario 2022 flight deals

Cheap flights to Ontario from San Francisco found for this year

Cheap Frontier flights from San Francisco to Ontario

Cheap United Airlines flights from San Francisco to Ontario

Non-stop flights to Ontario from San Francisco

Save time with San Francisco to Ontario direct flight deals

Last minute flights from San Francisco to Ontario

Late deals on return flights to Ontario from San Francisco, departing today and this week

One-way flights to Ontario from San Francisco

The cheapest one-way flights from San Francisco to Ontario

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?

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

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

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

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

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

How popular is this San Francisco to Ontario flight route?

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

How long is the flight from San Francisco to Ontario?

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

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

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

What are the cheapest flights from San Francisco to Ontario?

Other flights from San Francisco

Other flights to Ontario

Flights to Ontario from San Francisco

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COVID Restrictions

Can I fly to Ontario from San Francisco right now?

Can I fly back to San Francisco from Ontario?

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.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2022

Hourly flight availability from San Francisco to Ontario

See what time of day planes typically take off from San Francisco to Ontario

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