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Good to Know: Cheapest and Fastest SFO - ONT Flights
Useful information for finding best airline tickets from San Francisco International to Ontario International on your next trip.
Cheapest Round Trip Flight
$396
Frontier Airlines
• nonstop
• 2h 13m
Aug 05 – Aug 10
The cheapest round trip flight from San Francisco to Ontario (SFO-ONT-SFO) is currently $396
Cheapest One way Flight
$148
Frontier Airlines
• 1 stop
• 9h 6m
Aug 08
The cheapest one way flight from San Francisco to Ontario (SFO-ONT) is currently $148
Cheapest Direct Flight
$396
Frontier Airlines
• nonstop
• 2h 13m
Aug 05
The cheapest nonstop flight from San Francisco to Ontario (SFO-ONT) is currently $396
Fastest Flight
2h 13m
The fastest nonstop flight from San Francisco to Ontario (SFO-ONT) takes 2h 13m
Top Airlines Flying from San Francisco to Ontario
Latest Flight Deals from San Francisco (SFO) to Ontario (ONT)
Compare and book low fare round-trip air tickets from San Francisco to Ontario. Ideal for travelers with confirmed return itineraries.
Aug 05 - Aug 10, Economy
San Francisco → Ontario
2h 13m
11:15 AM - 12:48 PM • nonstop
San Francisco → Ontario
2h 7m
8:58 AM - 10:25 AM • nonstop
Frontier Airlines
Aug 14 - Aug 16, Economy
San Francisco → Ontario
27h 31m
7:25 PM - 12:16 PM • 1 stop
San Francisco → Ontario
1h 55m
6:15 PM - 7:30 PM • nonstop
Delta Airlines
Aug 14 - Aug 16, Economy
San Francisco → Ontario
34h 19m
7:25 PM - 4:24 PM • 1 stop
San Francisco → Ontario
1h 59m
9:30 AM - 10:49 AM • nonstop
Delta Airlines
Aug 14 - Aug 16, Economy
San Francisco → Ontario
31h 48m
5:08 PM - 12:16 PM • 1 stop
San Francisco → Ontario
1h 59m
8:00 PM - 9:19 PM • nonstop
Delta Airlines
Aug 05 - Aug 10, Economy
San Francisco → Ontario
7h 24m
12:08 PM - 4:52 PM • 1 stop
San Francisco → Ontario
2h 4m
7:15 AM - 8:39 AM • nonstop
Alaska Airlines
Explore competitive one-way airfare options for SFO - ONT flights. Best suited for flexible or open-ended travel plans.
Flying to Ontario soon? We've surfaced some of the most affordable last-minute flights from San Francisco to Ontario, ideal for urgent plans or spontaneous trips.
Looking for the fastest way to Ontario? These direct flight options from SFO to ONT offer both convenience and value—no layovers, just straight to your destination.
FAQs on San Francisco to Ontario Flights
What are the airports in San Francisco?
SFO
What’s the most popular airline flying from SFO to ONT?
The most popular airline flying from San Francisco to Ontario are
Can I fly from SFO to ONT non-stop?
Yes, you can fly SFO to ONT non-stop on
Which airlines fly nonstop between San Francisco and Ontario?
The non-stop flights between San Francisco and Ontario are .
What’s the earliest departure time from SFO to ONT Airport?
The earliest flight leaves SFO at 6:10 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my San Francisco to Ontario 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 SFO to ONT?
Read the fare rules of the San Francisco to Ontario 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 San Francisco and Ontario?
operate flights between San Francisco and Ontario
How long does a flight from San Francisco to Ontario take?
It takes approximately 1 hour to fly non-stop from SFO to ONT, which is 363.46 miles by air.
Which airlines provide the cheapest flights from San Francisco (SFO) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from SFO were found on F9 : USD 148
Do I need a passport to fly between SFO and ONT?
No
What’s the latest departure time from SFO to ONT ?
The last flight leaves SFO at 7:25 pm
San Francisco (SFO) to Ontario (ONT): Airport Information
| Origin Airport | San Francisco International , San Francisco, US |
| Destination Airport | Ontario International , Ontario, US |
| Distance | 363 miles |
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