United Flights from Ontario (ONT) to San Francisco (SFO)

If you're flying with United Airlines from Ontario, CA (ONT-Los Angeles - Ontario Intl.), you'll generally board from terminal 2. If you're traveling to San Francisco, CA (SFO-San Francisco Intl.) from here, you'll probably be pulling in at terminal 3.

With United Airlines offering direct flights between Ontario, CA (ONT-Los Angeles - Ontario Intl.) and San Francisco, CA (SFO-San Francisco Intl.), your next inspiring adventure is a plane ride away. Kiss goodbye to the stress, inconvenience and luggage mix-ups often associated with stopovers, and reserve your seat today.

If the weather's good and things run smoothly, your United Airlines flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to San Francisco, CA (SFO-San Francisco Intl.) should take approximately 3 hours and 29 minutes. Make use of that short journey to check the details on your travel schedule before the wheels hit the tarmac.

United Airlines usually uses the Bombardier CRJ or the Airbus A319 on the flight path between Ontario, CA (ONT-Los Angeles - Ontario Intl.) and San Francisco, CA (SFO-San Francisco Intl.).

United Airlines is currently operating no fewer than 3 flights each day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to San Francisco, CA (SFO-San Francisco Intl.).

For more info about changing your flight to San Francisco, CA (SFO-San Francisco Intl.), please visit our Customer Service Portal.

This just in! Airfares offered on Tuesdays tend to be the cheapest, according to flight demand on Travelocity in 2019. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Monday, as data shows the start of the week 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 2019, flights departing on a Tuesday 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 2019 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 1-2 weeks prior to their travel dates.

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2019 saved nearly 50% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2019. Savings are subject to change based on departure location, date and destination.