$103 Cheap United flights from San Francisco to Ontario (SFO to ONT)

Find The Best Day To Fly from San Francisco to Ontario

Amazing United SFO to ONT Flight Deals

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were $141 round trip and $103 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Jun 5 - Sat, Jun 8
SFO
San Francisco
ONT
Ontario
$141 Roundtrip, found 8 hours ago
$141
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Jun 5 from San Francisco to Ontario, returning Sat, Jun 8, priced at $141 found 8 hours ago

Frequently asked questions

Can I catch a flight from San Francisco Airport to ONT right now?
Ensure you check out the Covid-19 Travel Advisor to learn if there are any present travel advice reports and quarantine requirements in place in ONT when jet-setting from San Francisco Intl. Airport (SFO).
What terminal is United Airlines at San Francisco Airport?
At San Francisco Airport, United Airlines flights to ONT normally head out from terminal 3. Want to know which terminal you’ll be exiting the plane at? It’ll most likely be terminal 2.
Are there United Airlines non-stop flights from SFO to ONT?
In short, yes. Secure your seat on a nonstop flight with United Airlines from SFO to ONT, and you won’t have to stress about long stopovers or running to make your connecting flight.
How long is a United Airlines flight from SFO to ONT?
From the moment your United Airlines aircraft gets pushed back from the gate at San Francisco Intl. Airport (SFO) to the instant it taxis into Los Angeles - Ontario Intl. Airport (ONT), your journey will take about 3 hours and 15 minutes. With such a short and sweet flight time, it’s the perfect spur-of-the-moment vacation.
What type of aircraft does United Airlines fly from SFO to ONT?
The Embraer 175 and the Bombardier CRJ are the two types of aircraft most commonly flown by United Airlines between SFO and ONT.
How many direct and indirect flights does United Airlines fly from SFO to ONT?
If you’d like to book a journey from SFO to ONT, you can pick from at least 3 United Airlines flights each day.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Los Angeles - Ontario Intl. Airport (ONT), please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
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.
What are the cheapest days to fly?
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.
How far in advance can you book a flight?
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.

Discover our best United flight from San Francisco SFO to Ontario ONT 

To find the best deals on flights to San Francisco from Ontario with United, just enter your travel dates, filter by United, and hit search. You’ll find 2 flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from San Francisco SFO to Ontario ONT with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $141 to $141, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from San Francisco SFO to Ontario ONT 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from San Francisco to Ontario costs from $103. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Ontario ONT from  San Francisco SFO with United 

To find a cheap United flight from San Francisco SFO to Ontario ONT, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from San Francisco SFO to Ontario ONT 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as June, or if you book a flight with a stopover. 

 

Find nonstop flights from San Francisco SFO to Ontario ONT with United 

If you’re keen to be on Ontario soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around 1 hour(s) 34 min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from San Francisco SFO to Ontario ONT 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Ontario ONT from  San Francisco SFO with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

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