Flights from Ontario to San Francisco

Tips and tricks to help you find cheap flights from Ontario to San Francisco

Favorite airline: Frontier Airlines
The most popular airline for flights from Ontario to San Francisco is Frontier Airlines.
Frontier Airlines
91 %
United Airlines
9 %
Tip: book 8 weeks before departure
The best time to find a cheap flight on this route is 8 weeks before travel. Save up to 28 %.
55 days before departure
Cheapest weekday: Tuesday
Flight tickets are cheapest on Tuesday. Flights on these weekdays cost up to 43 % less.

Flight information: Ontario - San Francisco

Roundtrip from $54.40
Flight duration min. 01:28 / max. 01:35
Return flight duration min. 01:27/ max. 03:20
Distance 585 km
Flights per week 42
Departure airport Ontario-CA (ONT)
Arrival airport San Francisco International Airport, CA (SFO)
Destination country United States