$23+ Cheap flights from Ontario to San Francisco (ONT - SFO)

To fly from Ontario to San Francisco, you need to book a flight from Ontario (ONT) to San Francisco (SFO). Nonstop flights to San Francisco from Ontario take 1h 26m on average. When it comes time to book airfare, you have a few options: there are 9 outbound flights from Ontario to San Francisco offered by 6 different airlines.

Yes, there are multiple flights from Ontario to San Francisco for under $100. The cheapest flight booked recently is on Frontier for just $46, but on average you can expect to pay $132.

Cheapflights has at least 2 direct flights from Ontario to San Francisco under $100. A good price for a nonstop flight from Ontario to San Francisco is less than $92.

There are currently 5+ open flights from Ontario to San Francisco within the next 7 days for less than $100.

You can find nonstop flights on the following days: Sunday, Thursday, Friday, Saturday.

This flight path from Ontario to San Francisco was viewed by 156 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

8 flight departures from Ontario to San Francisco per day on average.
Early Morning (Midnight to 6am) - 25% of flight departures
Morning (6am - Noon) - 38% of flight departures
Evening (6pm - Midnight) - 38% of flight departures

A quick flight from Ontario to San Francisco can take about 1h 26m. Frontier provides one of the quickest options available for as low as $46. The distance from Ontario to San Francisco is about 364 mi. This flight may include one or multiple stops.

Flying on Frontier is currently your cheapest option to San Francisco, with prices starting at $46. Additional round-trip tickets that might be worth considering are offered by United Airlines and Southwest, with the lowest prices starting at $139 and $212, respectively. You may be able to fly from Ontario to San Francisco for 64% less than the average price by searching for these airlines.

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $23. However, be on the lookout for offers from Southwest and United Airlines, as they are both options that can get you from Ontario to San Francisco for a low price.

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ontario to San Francisco on time: United Airlines (84%), SkyWest Airlines (84%), Copa Airlines (82%).

On average you can expect to pay $844 for a flight from Ontario to San Francisco. The cheapest flight overall is $21 while the most popular route, (Ontario - San Francisco) is currently priced at $45.

ONT and SFO are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. ONT to SFO refers to a flight route from Ontario Airport to San Francisco Airport.

The amount of baggage you can bring on your Ontario to San Francisco flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter Ontario to San Francisco flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Yes. In addition to deals on Ontario to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to San Francisco.

Yes. Cheapflights offers flight deals from Ontario to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Many airlines flying from Ontario to San Francisco offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on Ontario to San Francisco flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The Ontario to San Francisco flight deals you see on this page were last updated on 10/10.

Currently, December is the cheapest month in which you can book a flight from Ontario to San Francisco (average of $273). Flying from Ontario to San Francisco in June is currently the most expensive (average of $383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.