Starting at $29
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Starting at $72
Helping travelers to find the best flight offers
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Ontario to San Francisco. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A direct flight is the most convenient and comfortable way to fly from Ontario to San Francisco, despite the fact that sometimes flights with transfers can cost significantly less.
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Ontario to San Francisco:
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
The Ontario — San Francisco route is served by a wide range of airlines: 4 in total, including Frontier Airlines, United Airlines, Southwest Airlines, and Alaska Airlines. Competition among carriers gives passengers the opportunity to find tickets at attractive fares — with prices starting from $29. Our service helps compare all available offers within seconds and choose the most convenient option. You can filter flights by price, departure time, or baggage rules to make your trip as comfortable as possible. With so many airlines, there’s always a chance to catch special promotions and save.
Starting at $29
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Starting at $72
Ontario — San Francisco
10/18/2025
Departure
Direct flight
F92677
Starting at $29
Los Angeles — San Francisco
11/14/2025
Departure
Direct flight
F92857
Starting at $30
Ontario — San Francisco
10/17/2025
Departure
Direct flight
F92677
Starting at $30
Los Angeles — San Francisco
10/22/2025
Departure
Direct flight
F94593
Starting at $31
Ontario — San Francisco
10/09/2025
Departure
Direct flight
UA1585
Starting at $40
Los Angeles — Oakland
10/27/2025
Departure
Direct flight
WN3956
Starting at $44
Ontario — San Francisco
10/20/2025
Departure
Direct flight
F92677
Starting at $70
Los Angeles — San Francisco
11/22/2025
Departure
Direct flight
AS1460
Starting at $72
Los Angeles — San Jose
10/09/2025
Departure
Direct flight
AS3387
Starting at $81
Los Angeles — San Francisco
12/27/2025
Departure
Direct flight
UA1597
Starting at $99
Unable to find information about the schedule of direct flights from
The cheapest one-way flight from Ontario to San Francisco departs on 10/18/2025, is operated by Frontier Airlines and costs $29
The cheapest roundtrip flight from Ontario to San Francisco departs on 11/06/2025, is operated by Frontier Airlines and costs $62
Fastest flight from Ontario to San Francisco takes 1h 19m
There are direct flights on this route 6 days a week: Su, Mo, We, Th, Fr, and Sa
The distance between Ontario and San Francisco is 597km (370 miles). There are 28 direct flights from Ontario to San Francisco. Ontario and San Francisco are in the same time zone. Flights from Ontario begin at 6:10 AM. The latest flight from Ontario departs at 9:41 PM
The cheapest flight ticket from Ontario to San Francisco according to data for the last 48 hours costs $29
Often the best time to buy tickets from Ontario to San Francisco is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Ontario to San Francisco can be found flying in these months: November, October, March.
The fastest flights from Ontario to San Francisco start from 1 hour 19 minutes in the air.
The following airlines operate direct flights on the route Ontario — San Francisco: Frontier Airlines, United Airlines, Southwest Airlines
The minimum one-way ticket price from Ontario to San Francisco is $35 (November 2025), while the maximum is $169 (February 2026). On average, a ticket costs $105–$288.
We couldn't find any special offers for flights from Ontario to San Francisco
