$28 Find Cheap Flights from Ontario to San Francisco Bay Area - Compare and Save

The cheapest ticket to San Francisco Bay Area from Ontario found in the last 5 days was to San Francisco, at $58 round-trip. The most popular route is from Ontario (ONT) to San Francisco (SFO), and the cheapest round-trip airline ticket found on this route in the last 5 days was $58.

The cheapest time of day to fly to San Francisco Bay Area is generally at night, when round-trip flights cost $141 on average. Morning departures are around 19% cheaper than evening flights, on average. The most expensive time of day to fly to San Francisco Bay Area is generally in the evening, which is peak travel time and where the average cost of a ticket is $390.

No, with an average price for the route of $417, prices are generally cheapest when you fly direct.

The cheapest month for flights from Ontario to San Francisco Bay Area is April, when tickets cost $28 (return) on average. On the other hand, the most expensive months are October and September, when the average cost of round-trip tickets is $467 and $387 respectively.

If you are looking for a flight deal from Ontario to San Francisco Bay Area, look for departures on Fridays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from San Francisco Bay Area, Monday is the cheapest day to fly and Tuesday is the most expensive.

To get a below average price on the flight from Ontario to San Francisco Bay Area, you should book around 2 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

There are 6 airlines that fly nonstop from Ontario to San Francisco Bay Area. They are: American Airlines, Alaska Airlines, Frontier, JetBlue, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Frontier at $29 for a round-trip flight to San Jose (SJC). On average, Frontier offers the best prices for nonstop flights between Ontario and San Francisco Bay Area.

Ontario and San Francisco Bay Area are connected by different airlines. The airlines that fly that route the most regularly are Southwest (27 flights per week), United Airlines (22 flights per week), and Air Canada (21 flights per week).

The duration of a flight to San Francisco Bay Area depends on your arrival airport. The shortest route to San Francisco Bay Area from Ontario is to San Francisco, which takes 1h 25m.

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

The earliest flight from Ontario to San Francisco Bay Area departs at 6:00 am, landing in San Francisco at 7:25 am.

If you prefer to fly at night, the latest flight from Ontario to San Francisco Bay Area jets off at 7:13 pm and lands in San Francisco at 8:56 pm.