$37+ 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 27m on average. When it comes time to book airfare, you have a few options: there are 7 outbound flights from Ontario to San Francisco offered by 5 different airlines.

This flight path from Ontario to San Francisco was viewed by 103 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

A quick flight from Ontario to San Francisco can take about 1h 30m. Southwest provides one of the quickest options available for as low as $187. The distance from Ontario to San Francisco is about 363 mi. This flight may include one or multiple stops.

Flying on Frontier is currently your cheapest option to San Francisco, with prices starting at $49. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and United Airlines, with the lowest prices starting at $91 and $96, respectively. You may be able to fly from Ontario to San Francisco for 77% 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 $33. However, be on the lookout for offers from United Airlines and Delta, 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: Air Canada (49%), SkyWest Airlines (34%), United Airlines (32%).

On average you can expect to pay $1,545 for a flight from Ontario to San Francisco. The cheapest flight overall is $41 while the most popular route, (Ontario - San Francisco) is currently priced at $109.

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.

Currently, October is the cheapest month in which you can book a flight from Ontario to San Francisco (average of $138). Flying from Ontario to San Francisco in February is currently the most expensive (average of $306). 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.