$77 Cheap Flights from Sioux Falls (FSD) to Ontario (ONT)

View $77 flight on Fri, Feb 20, 2026Opens in a new window

Popular airlines from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from Sioux Falls to Ontario (FSD-ONT)

Prices were available within the past 7 days and start at $77 for one-way flights and $154 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Nov 14 - Sat, Nov 15
FSD
Sioux Falls
ONT
Ontario
$154 Roundtrip, found 1 day ago
$154
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Nov 14 from Sioux Falls to Ontario, returning Sat, Nov 15, priced at $154 found 1 day ago
Frontier Airlines
Sun, Nov 9 - Thu, Nov 13
FSD
Sioux Falls
ONT
Ontario
$172 Roundtrip, found 2 days ago
$172
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Nov 9 from Sioux Falls to Ontario, returning Thu, Nov 13, priced at $172 found 2 days ago
Frontier Airlines
Mon, Nov 10 - Thu, Nov 13
FSD
Sioux Falls
ONT
Ontario
$186 Roundtrip, found 1 day ago
$186
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Nov 10 from Sioux Falls to Ontario, returning Thu, Nov 13, priced at $186 found 1 day ago
Frontier Airlines
Thu, Jan 15 - Sun, Jan 18
FSD
Sioux Falls
ONT
Ontario
$191 Roundtrip, found 1 day ago
$191
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Jan 15 from Sioux Falls to Ontario, returning Sun, Jan 18, priced at $191 found 1 day ago
Frontier Airlines
Mon, Nov 10 - Fri, Nov 14
FSD
Sioux Falls
ONT
Ontario
$193 Roundtrip, found 1 day ago
$193
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Nov 10 from Sioux Falls to Ontario, returning Fri, Nov 14, priced at $193 found 1 day ago
Frontier Airlines
Sun, Nov 9 - Fri, Nov 14
FSD
Sioux Falls
ONT
Ontario
$204 Roundtrip, found 2 days ago
$204
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Nov 9 from Sioux Falls to Ontario, returning Fri, Nov 14, priced at $204 found 2 days ago
Frontier Airlines
Mon, Nov 24 - Sat, Dec 6
FSD
Sioux Falls
ONT
Ontario
$216 Roundtrip, found 2 days ago
$216
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Nov 24 from Sioux Falls to Ontario, returning Sat, Dec 6, priced at $216 found 2 days ago
American Airlines
Mon, Nov 24 - Fri, Nov 28
FSD
Sioux Falls
ONT
Ontario
$269 Roundtrip, found 7 hours ago
$269
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Mon, Nov 24 from Sioux Falls to Ontario, returning Fri, Nov 28, priced at $269 found 7 hours ago
Delta
Tue, Nov 18 - Fri, Dec 5
FSD
Sioux Falls
ONT
Ontario
$269 Roundtrip, found 5 days ago
$269
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Nov 18 from Sioux Falls to Ontario, returning Fri, Dec 5, priced at $269 found 5 days ago
United
Mon, Feb 2 - Tue, Feb 10
FSD
Sioux Falls
ONT
Ontario
$269 Roundtrip, found 8 hours ago
$269
Roundtrip
found 8 hours ago
Select United flight, departing Mon, Feb 2 from Sioux Falls to Ontario, returning Tue, Feb 10, priced at $269 found 8 hours ago

Find the cheapest month to fly from Sioux Falls (FSD) to Ontario (ONT)

March is typically the cheapest month to fly

From $138 - $629 per traveler.

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city center is 42 minutes. Flights from $339
SNA
John Wayne
Cheapest
Average driving time to city center42 min
Flights from $339
Flights from Sioux Falls (FSD) to Ontario (ONT)
Origin airport
Sioux Falls Regional
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$154
Distance
1295 mi

Sioux Falls to Ontario Flights

The cheapest times to fly from Sioux Falls to Ontario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sioux Falls to Ontario are during the month of November. You can find some of the cheapest flights from Sioux Falls to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sioux Falls to Ontario

Sunday is one of the best days to book for cheap flights from Sioux Falls to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sioux Falls to Ontario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sioux Falls to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $77 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sioux Falls to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sioux Falls to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Lock in a cheap one-way flight from $77 or cheap return flight from $154 from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT)?
November is the least expensive month to fly from FSD to ONT. Avoiding peak travel times is often the key to landing a great deal.
What is the cheapest airline that flies from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT)?
To find the cheapest airline flying from FSD to ONT, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT)?
There aren't any daily direct flights departing from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from FSD to ONT?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a range of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT)?
Select a flight from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT) that takes off before 3 PM to reduce the risk of cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Last-minute fares from FSD to ONT are usually more expensive. To lock in the cheapest rates, start looking for flights early. That being said, if you're flexible with your travel dates, it's possible to land a cheap fare right before your trip.
Is it cheaper to book a FSD to ONT flight and hotel package?
You'll typically save money by securing a FSD to ONT flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After selecting your ideal accommodations and flights, you can add extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Sioux Falls Regional Airport (FSD) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, you're able to reschedule or cancel your FSD to ONT flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like more information, visit our Customer Service portal.

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*Available to One Key members.