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

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.

Good to know

Useful information for finding cheap flights from Ontario International to San Francisco International and booking your next trip

Cheapest Round Trip Flight

$150

WN Southwest Airlines • 1 stop • 7h 30m

Jul 06 – Jul 07

The cheapest round trip flight from Ontario International to San Francisco International is currently $150

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Cheapest Direct Flight

$237

DL Delta Airlines • nonstop •

Jul 06

The cheapest nonstop flight from Ontario International to San Francisco International is currently $237

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Fastest Flight

2h 7m

The fastest nonstop flight from Ontario International to San Francisco International takes 2h 7m

Recent airfare deals on Ontario to San Francisco

Jul 06 - Jul 07, Economy
WN
Ontario → San Francisco
7h 30m
8:40 AM - 1:30 PM • 1 stop
WN
Ontario → San Francisco
8h 20m
5:00 AM - 10:00 AM • 1 stop
$150
Southwest Airlines
Jul 06 - Jul 07, Economy
HA
Ontario → San Francisco
- • nonstop
HA
Ontario → San Francisco
- • nonstop
$289
Hawaiian Airlines
Jul 06 - Jul 07, Economy
AS
Ontario → San Francisco
- • nonstop
AS
Ontario → San Francisco
- • nonstop
$317
Alaska Airlines
Jul 06 - Jul 07, Economy
HA
Ontario → San Francisco
- • nonstop
HA
Ontario → San Francisco
- • nonstop
$373
Hawaiian Airlines
Jul 06 - Jul 07, Economy
AS
Ontario → San Francisco
- • nonstop
AS
Ontario → San Francisco
- • nonstop
$401
Alaska Airlines
Jul 06 - Jul 07, Economy
AS
Ontario → San Francisco
10h 19m
10:03 AM - 4:22 PM • 1 stop
UA
Ontario → San Francisco
2h 9m
10:45 AM - 12:14 PM • nonstop
$653
Alaska Airlines

Facts to know while booking flights from Ontario to San Francisco

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 6:10 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 ('AS') : USD 317
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 11:000 pm

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

What's the cheapest airline from ont to sfo?
Frontier Airlines (F9), offers the most affordable options from Ontario to San Francisco.
What's the popular airline to fly from ont to sfo?
Delta Airlines (DL) offers popular routes from Ontario to San Francisco, providing a reliable and affordable option for your travel.
What's the cheapest day of the week to fly from ont to sfo?
Thursday is the cheapest day to fly from Ontario to San Francisco.
What's the cheapest month to fly from ont to sfo?
March is the cheapest month to fly from Ontario to San Francisco.
What is Frontier Airlines?
Frontier Airlines is a low-cost airline based in Ontario, Canada, known for its budget-friendly fares and frequent flights between major cities.
Which airline offers the lowest fares?
Delta Airlines (DL) typically offers some of the lowest fares for travel between Ontario and San Francisco, especially during off-peak seasons.
When are flights between Ontario and San Francisco generally cheapest?
Thursday is often considered the cheapest day to fly between Ontario and San Francisco, offering the most favorable fare options.
What month offers the best deals on flights to San Francisco?
March is generally considered the best month to book flights to San Francisco, as it tends to have lower fares compared to other months.
What is a popular airline for flights between Ontario and San Francisco?
Delta Airlines (DL) is a frequently used airline for flights between Ontario and San Francisco due to its extensive network and competitive fares.

Flights from Ontario to San Francisco

Origin Airport Ontario International , Ontario, US
Destination Airport San Francisco International , San Francisco, US
Distance miles

Popular Airlines

Southwest Airlines-WN
Delta Airline, DL
United Airlines, UA
American Airlines, AA
Hawaiian Airlines-HA
Spirit Airlines-NK
Alaska Airlines -AS

Popular Origin & Destination

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