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Uncover the best deals on Ontario to San Francisco flights by comparing fares from hundreds of airlines and agencies.
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
$124
Southwest Airlines
• 1 stop
• 14h 15m
Sep 18 – Sep 25
The cheapest round trip flight from Ontario to San Francisco (ONT-SFO-ONT) is currently $124
Cheapest One way Flight
$471
Southwest Airlines
• 1 stop
• 25h 25m
Sep 18
The cheapest one way flight from Ontario to San Francisco (ONT-SFO) is currently $471
Cheapest Direct Flight
$177
Frontier Airlines
• nonstop
• 2h 16m
Oct 01
The cheapest nonstop flight from Ontario to San Francisco (ONT-SFO) is currently $177
Fastest Flight
2h 6m
The fastest nonstop flight from Ontario to San Francisco (ONT-SFO) takes 2h 6m
Top Airlines Flying from Ontario to San Francisco
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.
Sep 18 - Sep 25, Economy
Ontario → San Francisco
14h 15m
2:00 PM - 10:55 PM • 1 stop
Ontario → San Francisco
11h 40m
2:50 PM - 9:50 PM • 1 stop
Southwest Airlines
Sep 18 - Sep 25, Economy
Ontario → San Francisco
13h 50m
2:40 PM - 11:10 PM • 1 stop
Ontario → San Francisco
10h 55m
3:20 PM - 10:15 PM • 1 stop
Southwest Airlines
Sep 18 - Sep 25, Economy
Ontario → San Francisco
10h 20m
4:50 PM - 11:10 PM • 1 stop
Ontario → San Francisco
13h 25m
7:00 AM - 3:05 PM • 1 stop
Southwest Airlines
Sep 18 - Sep 25, Economy
Ontario → San Francisco
9h 5m
5:45 PM - 11:30 PM • 1 stop
Ontario → San Francisco
7h 15m
2:50 PM - 7:25 PM • 1 stop
Southwest Airlines
Sep 30 - Oct 03, Economy
Ontario → San Francisco
7h 20m
8:35 AM - 1:15 PM • 1 stop
Ontario → San Francisco
9h
3:00 PM - 8:40 PM • 1 stop
Southwest Airlines
Explore competitive one-way airfare options for ONT - SFO flights. Best suited for flexible or open-ended travel plans.
Flying to San Francisco soon? We've surfaced some of the most affordable last-minute flights from Ontario to San Francisco, ideal for urgent plans or spontaneous trips.
Sep 21 - Sep 21, Economy
Ontario → San Francisco
2h 7m
6:08 AM - 7:35 AM • nonstop
Ontario → San Francisco
2h 15m
10:37 AM - 12:12 PM • nonstop
United Airlines
Sep 21 - Sep 21, Economy
Ontario → San Francisco
2h 9m
1:56 PM - 3:25 PM • nonstop
Ontario → San Francisco
2h 11m
6:30 PM - 8:01 PM • nonstop
United Airlines
Sep 21 - Sep 21, Economy
Ontario → San Francisco
2h 9m
9:01 AM - 10:30 AM • nonstop
Ontario → San Francisco
2h 11m
4:40 PM - 6:11 PM • nonstop
United Airlines
Sep 21 - Sep 21, Economy
Ontario → San Francisco
6h 50m
5:40 AM - 9:50 AM • 1 stop
Ontario → San Francisco
2h 10m
5:05 PM - 6:35 PM • nonstop
Southwest Airlines
Sep 21 - Sep 21, Economy
Ontario → San Francisco
6h 50m
5:40 AM - 9:50 AM • 1 stop
Ontario → San Francisco
10h
2:50 PM - 8:50 PM • 1 stop
Southwest Airlines
Looking for the fastest way to San Francisco? These direct flight options from ONT to SFO offer both convenience and value—no layovers, just straight to your destination.
Oct 01 - Oct 04, Economy
Ontario → San Francisco
2h 16m
12:07 PM - 1:43 PM • nonstop
Ontario → San Francisco
2h 17m
9:00 AM - 10:37 AM • nonstop
Frontier Airlines
Oct 08 - Oct 12, Economy
Ontario → San Francisco
2h 9m
1:52 PM - 3:21 PM • nonstop
Ontario → San Francisco
2h 15m
10:43 AM - 12:18 PM • nonstop
United Airlines
Oct 08 - Oct 12, Economy
Ontario → San Francisco
2h 6m
6:07 AM - 7:33 AM • nonstop
Ontario → San Francisco
2h 15m
10:43 AM - 12:18 PM • nonstop
United Airlines
Oct 08 - Oct 12, Economy
Ontario → San Francisco
2h 9m
9:25 AM - 10:54 AM • nonstop
Ontario → San Francisco
2h 15m
10:43 AM - 12:18 PM • nonstop
United Airlines
Oct 08 - Oct 12, Economy
Ontario → San Francisco
2h 27m
4:03 PM - 5:50 PM • nonstop
Ontario → San Francisco
2h 6m
9:25 PM - 10:51 PM • nonstop
United Airlines
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 DL : USD 718
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 11:55 pm
Hotels in San Francisco (SFO)
5 hotels near San Francisco International — compare rates from top booking sites.
5-star hotel
The Ritz Carlton, Half Moon Bay
📍 One Miramonte Point Rd., Half Moon Bay, California 94109
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5-star hotel
The Ritz-Carlton, Half Moon Bay
📍 1 Miramontes Point Rd, Half Moon Bay, California 94019
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5-star hotel
Rosewood Sand Hill
📍 2825 Sand Hill Road, Menlo Park, California 94025
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5-star hotel
Sofitel San Francisco Bay
📍 223 Twin Dolphin Dr, Redwood City, California 94065
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5-star hotel
Clift
📍 495 Geary St, San Francisco, California 94102
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Hotel Deals in San Francisco (CA)
No chain
Park Pointe Hotel
6.8/10
★★☆☆☆
Hotel
217.0 rooms
📍 245 South Airport Boulevard, San Francisco (CA)
Experience an abundance of unparalleled facilities and features at Park Pointe Hotel. For visitors traveling by automobile, complimentary parking is available.Reception assistance is offered at the h…
Check-in 03:00 PM · Check-out 11:00 AM
$95/night
View Deal
No chain
HI San Francisco Downtown Hostel
8.6/10
★★☆☆☆
Hostel
✓ Free WiFi
📍 312 Mason Street, San Francisco (CA), California
Experience an abundance of unparalleled facilities and features at HI San Francisco Downtown Hostel. Maintain seamless communication using the complimentary Wi-Fi at hostel. Reception assistance is o…
Check-in 03:00 PM · Check-out 11:00 AM
$111/night
View Deal
Choice Hotels
Comfort Inn & Suites San Francisco Airport North
8.0/10
★★★☆☆
Hotel
168.0 rooms
✓ Free WiFi
✓ Breakfast
📍 121 East Grand Avenue, San Francisco (CA), California
Experience an abundance of unparalleled facilities and features at Comfort Inn & Suites San Francisco Airport North. Share your photos and respond to emails at your convenience, thanks to the free Wi…
Check-in 3:00 PM · Check-out 11:00 AM
$126/night
View Deal
No chain
SF Plaza Hotel
7.3/10
★★★☆☆
Hotel
📍 510 Bush Street, San Francisco (CA), California
At SF Plaza Hotel, exceptional service and top-notch amenities create a memorable experience for guests.Continuously receive the support you require through front desk amenities such as concierge ser…
$161/night
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No chain
The Mosser Hotel
8.1/10
★★★☆☆
Hotel
166.0 rooms
✓ Free WiFi
📍 54 4th Street, San Francisco (CA), California
At The Mosser Hotel, exceptional service and top-notch amenities create a memorable experience for guests. Complimentary internet access is available in the hotel to ensure you stay connected during …
Check-in 03:00 PM · Check-out 11:00 AM
$162/night
View Deal
InterContinental Hotels Group
Crowne Plaza San Francisco Airport By IHG
7.7/10
★★★★☆
Hotel
309.0 rooms
✓ Free WiFi
✓ Breakfast
📍 1177 Airport Boulevard, San Francisco (CA), California
Crowne Plaza San Francisco Airport By IHG provides flawless service and all the necessary facilities for visitors.Remain linked during your visit by utilizing the complimentary internet access availa…
Check-in 03:00 PM · Check-out 12:00 PM
$167/night
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No chain
The Herbert Hotel
7.7/10
★★★☆☆
Hotel
99.0 rooms
✓ Free WiFi
📍 161 Powell Street, San Francisco (CA), California
The Herbert Hotel provides flawless service and all the necessary facilities for visitors.Stay connected with your associates, as complimentary Wi-Fi is available during your entire visit. To facilit…
Check-in 03:00 PM · Check-out 11:00 AM
$174/night
View Deal
Hotel Union Square
7.7/10
★★★★☆
✓ Free WiFi
$201/night
View Deal
No chain
FOUND Hotel Carlton, Nob Hill
8.1/10
★★☆☆☆
Hotel
✓ Free WiFi
📍 1075 Sutter Street, San Francisco (CA)
Check-in 03:00 PM · Check-out 11:00 AM
$237/night
View Deal
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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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