Cheap Flight Tickets from Ontario (ONT) to San Francisco (SFO), Starting at $400

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

$400

WN Southwest Airlines • 1 stop • 5h 40m

Jul 16 – Jul 18

The cheapest round trip flight from Ontario to San Francisco (ONT-SFO-ONT) is currently $400

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Fastest Flight

5h 40m

The fastest nonstop flight from Ontario to San Francisco (ONT-SFO) takes 5h 40m

Top Airlines Flying from Ontario to San Francisco

Southwest Airlines-WN

Southwest Airlines

Alaska Airlines -AS

Alaska Airlines

Delta Airline, DL

Delta 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.

Jul 16 - Jul 18, Economy
WN
Ontario → San Francisco
5h 40m
5:30 AM - 9:10 AM • 1 stop
WN
Ontario → San Francisco
13h 45m
9:25 AM - 5:50 PM • 1 stop
$400
Southwest Airlines
Jul 16 - Jul 18, Economy
AS
Ontario → San Francisco
30h 8m
6:43 PM - 12:51 PM • 2 stops
AS
Ontario → San Francisco
33h 33m
7:25 PM - 3:38 PM • 1 stop
$640
Alaska Airlines
Jul 16 - Jul 18, Economy
AS
Ontario → San Francisco
28h 26m
6:43 PM - 11:49 AM • 2 stops
AS
Ontario → San Francisco
33h 54m
7:04 PM - 3:38 PM • 2 stops
$643
Alaska Airlines
Jul 16 - Jul 18, Economy
AS
Ontario → San Francisco
8h 59m
7:00 AM - 12:39 PM • 1 stop
AS
Ontario → San Francisco
27h 36m
5:00 PM - 9:56 AM • 2 stops
$686
Alaska Airlines
Jul 16 - Jul 18, Economy
AS
Ontario → San Francisco
9h 7m
2:05 PM - 7:52 PM • 1 stop
AS
Ontario → San Francisco
10h 52m
5:00 PM - 11:52 PM • 2 stops
$693
Alaska Airlines
Jul 16 - Jul 18, Economy
AS
Ontario → San Francisco
25h 52m
6:02 AM - 9:54 PM • 1 stop
AS
Ontario → San Francisco
10h 52m
5:00 PM - 11:52 PM • 2 stops
$693
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?
NO
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 400
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 6:43 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

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