Good to know
Close dialog Prices are for flights from Ontario to San Francisco for 1 adult in Economy. Flight times are based on nonstop flights or flights with the fewest stops available.
Flight information for Ontario to San Francisco to help you plan your next trip.
| Cheapest round-trip flight | $58 | FrontierNonstop2 hrApr 20 — Apr 21 | The cheapest round-trip flight from Ontario to San Francisco is currently $58 | |
|---|---|---|---|---|
| Cheapest one-way flight | $24 | FrontierNonstop2 hrApr 17 | The cheapest one-way flight from Ontario to San Francisco is currently $24 | |
| Fastest flight | 1 hr 22 min | The fastest nonstop flight from Ontario to San Francisco takes 1 hr 22 min | ||
| Nonstop flights | Every day | There are direct flights on this route every day. |
When is the cheapest time to fly?
Close dialog Typical prices for the least expensive flights for weekend trips from Ontario to San Francisco per month. Insights are based on fares observed in the last 12 months. Current prices may differ.
The cheapest month to fly from Ontario to San Francisco is typically May. The most expensive one is typically March.
| May Cheapest | Typical prices: $45–165 |
|---|---|
| March Most expensive | Typical prices: $95–180 |
Popular airports near Ontario
Close dialog Distance and driving time are relative to the city center. Airports are listed based on distance from Ontario center and popularity with travelers.
Ontario International Airport (ONT)
Ontario
11 min
2 mi
See AlsoFlights from San Francisco, CA to Ontario, CA from $29 - Cheapflights.comFlights from Ontario to San Francisco: ONT to SFO Flights + Flight ScheduleCheap Flights from San Francisco to Ontario from C$ 199 - Cheapflights.caFlights from San Francisco Bay Area to Ontario, CA from $44 - Cheapflights.comLos Angeles International Airport (LAX)
Los Angeles
1 hr 8 min
44 mi
Tijuana International Airport (TIJ)
Tijuana
2 hr 19 min
112 mi
John Wayne Airport (SNA)
Santa Ana
44 min
29 mi
Popular airports near San Francisco
Close dialog Distance and driving time are relative to the city center. Airports are listed based on distance from San Francisco center and popularity with travelers.
San Francisco International Airport (SFO)
San Francisco
18 min
11 mi
Oakland International Airport (OAK)
Oakland
27 min
11 mi
San José Mineta International Airport (SJC)
Sacramento International Airport (SMF)
Sacramento
1 hr 35 min
78 mi
Frequently asked questions about flying from Ontario to San Francisco
How long does it take to fly from Ontario to San Francisco?
1 hr 22 min is the shortest flight time from Ontario to San Francisco.
When are the cheapest days to fly from Ontario to San Francisco?
The cheapest days to fly are usually in May. Typical prices range from $45 to $165.
Which airlines provide the cheapest flights from Ontario to San Francisco?
The best round-trip deal recently found on Google Flights from Ontario to San Francisco was with Frontier from $58. The best one-way deal was with Frontier from $24.
When are direct flights from Ontario to San Francisco available?
There are direct flights from Ontario to San Francisco on a daily basis.
Which airlines have direct flights from Ontario to San Francisco?
United and Frontier fly direct from Ontario to San Francisco.
What are the cheapest flights from Ontario to San Francisco?
The cheapest round-trip flight from Ontario to San Francisco starts at $58 from Sat, Apr 20 to Sun, Apr 21. The cheapest one-way flight starts at $24 and departs on Wed, Apr 17.
When should you visit San Francisco?
Apr–Dec is when most people visit San Francisco, with crowds peaking in summer. Although average temperatures are higher then, mornings and evenings often have damp, chilly fog. In summer, street fairs and cultural institutions offer free outdoor entertainment. Winter visitors will find the opera and ballet seasons in full swing. Major annual events include Chinese New Year (Feb), Bay to Breakers footrace (May), San Francisco Pride parade and festival (Jun), and San Francisco Fleet Week (Oct).
How do I find cheap dates to fly from Ontario to San Francisco
It's easy to use Google Flights to find the cheapest days to fly from Ontario to San Francisco.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.
You can also turn on price tracking to get alerts if the price changes for a route or flight.
Search more flights
Popular trips from Ontario
Close dialog These suggestions are based on the cheapest fares to popular destinations in the next six months. Prices include required taxes + fees for 1 adult. Optional charges and bag fees may apply.
Las Vegas
$58
Apr 6 — Apr 8
Nonstop1 hr 9 minFrontier
Hong Kong
$1,032
Aug 22 — Aug 25
1 stop17 hr 30 minChina Airlines
Seattle
$82
May 18 — May 20
Nonstop2 hr 47 minFrontier
Boston
$376
Apr 25 — Apr 29
1 stop7 hr 51 minAmerican
Find flights from Ontario to anywhere
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