Cheap flights from Ontario to San Francisco (ONT - SFO) from $22

Users have found that flying from Ontario to San Francisco on a Monday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 60 days in advance, which can save you up to 62% on flights from Ontario to San Francisco compared to booking the week you need them. Waiting 60 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $151. For sooner than that we have options available in the next 3 days from $212.

January can be a great time to fly to San Francisco from Ontario with a flight ticket averaging about $148. Cheapflights users have found deals in the month of January for as cheap as $88. The most expensive prices can be found in the month of June.

One of the essential ways to save on airfare from Ontario to San Francisco is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 25% on airfare.

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 22m on average. When it comes time to book airfare, you have a few options: there are 6 outbound flights from Ontario to San Francisco offered by 8 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 $38, but on average you can expect to pay $55.

Cheapflights has at least 20 direct flights from Ontario to San Francisco under $100. A good price for a nonstop flight from Ontario to San Francisco is less than $56.

There are currently 20+ 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, Monday, Tuesday, Thursday, Friday, Saturday.

This flight path from Ontario to San Francisco was viewed by 48 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

7 flight departures from Ontario to San Francisco per day on average.
Early Morning (Midnight to 6am) - 57% of flight departures
Morning (6am - Noon) - 14% of flight departures
Afternoon (Noon - 6pm) - 29% of flight departures

A quick flight from Ontario to San Francisco can take about 1h 32m. Frontier provides one of the quickest options available for as low as $38. The distance from Ontario to San Francisco is about 364 mi. All flights are typically nonstop.

Flying on Frontier is currently your cheapest option to San Francisco, with prices starting at $38. You may be able to fly from Ontario to San Francisco for 75% less than the average price by searching for this airline.

Before booking your flight from Ontario to San Francisco check out the most popular airlines for this route: American Airlines, Alaska Airlines or JetBlue.

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: Copa Airlines (86%), Emirates (83%), Air Canada (79%).

On average you can expect to pay $546 for a flight from Ontario to San Francisco. The cheapest flight overall is $26 while the most popular route, (Ontario - San Francisco) is currently priced at $48.

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.

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to San Francisco. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to San Francisco for you. Better yet — we are completely free to use.

Yes! Cheapflights helps users easily find flights from Ontario to San Francisco with no change fees.

Yes, Cheapflights has a feature called Price Alert, which essentially offers users the ability to be notified when flight prices change. Track prices for your flight to San Francisco from Ontario today and book when you’re ready!