Cheap Flight Tickets from Ontario (ONT) to San Francisco (SFO), Starting at $70

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

$166

F9 Frontier Airlines • 1 stop • 20h 45m

Aug 28 – Aug 28

The cheapest round trip flight from Ontario to San Francisco (ONT-SFO-ONT) is currently $166

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Cheapest Direct Flight

$70

F9 Frontier Airlines • nonstop • 2h 7m

Aug 24

The cheapest nonstop flight from Ontario to San Francisco (ONT-SFO) is currently $70

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Fastest Flight

2h 7m

The fastest nonstop flight from Ontario to San Francisco (ONT-SFO) takes 2h 7m

Top Airlines Flying from Ontario to San Francisco

Southwest Airlines-WN

Southwest Airlines

United Airlines, UA

United Airlines

Alaska Airlines -AS

Alaska Airlines

Delta Airline, DL

Delta Airlines

American Airlines, AA

American Airlines

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.

Aug 28 - Aug 28, Economy
F9
Ontario → San Francisco
20h 45m
6:00 AM - 6:45 PM • 1 stop
F9
Ontario → San Francisco
18h 27m
8:56 PM - 8:03 AM • 1 stop
$166
Frontier Airlines
Aug 28 - Aug 28, Economy
F9
Ontario → San Francisco
2h 7m
8:48 AM - 10:15 AM • nonstop
F9
Ontario → San Francisco
27h 5m
3:38 PM - 8:03 AM • 1 stop
$207
Frontier Airlines
Aug 28 - Aug 28, Economy
WN
Ontario → San Francisco
5h 40m
5:40 AM - 9:20 AM • 1 stop
WN
Ontario → San Francisco
2h 10m
3:00 PM - 4:30 PM • nonstop
$254
Southwest Airlines
Aug 28 - Aug 28, Economy
AS
Ontario → San Francisco
9h 10m
10:47 AM - 4:37 PM • 1 stop
AS
Ontario → San Francisco
2h 18m
6:56 PM - 8:34 PM • nonstop
$405
Alaska Airlines
Aug 28 - Aug 28, Economy
AS
Ontario → San Francisco
15h 25m
7:12 AM - 4:37 PM • 1 stop
AS
Ontario → San Francisco
2h 18m
6:56 PM - 8:34 PM • nonstop
$411
Alaska Airlines
Aug 28 - Aug 28, Economy
AS
Ontario → San Francisco
8h 47m
7:12 AM - 12:39 PM • 1 stop
AS
Ontario → San Francisco
2h 10m
5:37 PM - 7:07 PM • nonstop
$411
Alaska Airlines

Fly from Ontario to San Francisco with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Ontario to San Francisco? Find the biggest savings on one-way and round-trip tickets right here.

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 5:40 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 F9 : USD 207
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 7:13 pm

Essential Information for Booking Flights from Ontario (ONT) - AI Insights

What's the cheapest airline from ont to sfo?
Frontier Airlines offers budget-friendly flights from Ontario International Airport (ONT) to San Francisco International Airport (SFO), making it a great option for travelers looking for affordable airfares. With this round-trip journey, you can enjoy luxurious amenities like fine dining and suites in their First cabin class. Booking 27 days in advance allows you to secure Low Fares on this route.
What's the popular airline to fly from ont to sfo?
You can fly from Ontario International Airport (ONT) to San Francisco International Airport (SFO) on Southwest Airlines. This luxury flight features suites and fine dining, making it a great option for your round-trip journey. Book in advance to secure the best low fares.
What's the cheapest day of the week to fly from ont to sfo?
The cheapest day to fly from Ontario International (ONT) to San Francisco International (SFO) is Sunday. Flying on Sundays can often result in lower fares, especially if you're flexible with your travel dates. For a round-trip First class ticket with two stops, booking at least 27 days in advance can help secure the best available airfares.
What's the cheapest month to fly from ont to sfo?
The cheapest month to fly from Ontario International Airport (ONT) to San Francisco International Airport (SFO) is November. This is based on historical data, which suggests that airfares tend to be lower during this time of year.
Which airline/airlines fly from ont to sfo?
The airlines that fly from Ontario International Airport (ONT) to San Francisco International Airport (SFO) include American Airlines, Volaris Airline, United Airlines, JetBlue Airways, Qatar Airways, Hawaiian Airlines, Frontier Airlines, Sun Country Airlines, Southwest Airlines, and Aeromexico. You can find budget-friendly flights with these airlines for your round-trip journey in July or November.
What is the cheapest airline to fly from Ontario International Airport to San Francisco International Airport?
Frontier Airlines (F9) offers the cheapest flights on this route.
How far in advance should I book my flights for a round trip ticket?
It is recommended to book your flights at least 27 days in advance for the best prices.
Can I find cheap airfares on fareleaders.com?
Yes, fareleaders.com offers affordable airfare options and helps you compare prices across various airlines.
Are there any busco airlines that offer direct flights to San Francisco?
No, there are no busco airlines that offer direct flights to San Francisco. However, Frontier Airlines (F9) has a non-stop flight option.
Is it possible to book flights for this weekend?
Yes, you can book flights for the upcoming weekend on fareleaders.com.
What is the average cost of airfare for a First class ticket on this route?
The average cost of a First class ticket on this route is around $airfare, with fares starting from $cheapflights.

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)

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