Vuelos Desde San Francisco Intl. (SFO) a Aeropuerto Internacional LA/Ontario (ONT) Empezando Desde $24

Sometimes, a trip is all about the journey; other times, the magic is in the destination. But if you just want to get to where you’re going fast, multiple airlines operate direct flights from SFO to ONT, including United Airlines and Frontier Airlines.

Flying from San Francisco to Ontario is a breeze, with travel taking a mere 1 hour and 25 minutes all up. With such a short journey ahead of you, you’ll hit the ground feeling as fresh as when you boarded and ready to enjoy the next part of your getaway.

The flight distance from SFO to ONT is only 360 mi. You’ll be disembarking the plane at your destination in no time.

You can take your pick from several airlines that fly direct between San Francisco and Ontario. United Airlines (UA) is one of the most popular. This carrier operates approximately 139 flights every month. Another good option is Frontier Airlines (F9), which has 17 flights every month. The more airlines you take into account, the more likely you are to walk away with a fantastic deal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.