A waterfall, a river, and ruins of an old structure.

CA $472 Cheap Flights from Ontario Intl. Airport (ONT) to Sioux Falls (FSD)

View CA $472 flight on Thu, Oct 29, 2026Opens in a new window

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

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Cheap flights from Ontario Intl. Airport (ONT) to Sioux Falls (FSD)

Prices were available within the past 7 days and start at CA $472 for one-way flights and CA $944 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Oct 29 - Fri, Oct 30
ONT
Ontario
FSD
Sioux Falls
CA $944 Roundtrip, found 6 days ago
CA $944
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Oct 29 from Ontario to Sioux Falls, returning Fri, Oct 30, priced at CA $944 found 6 days ago
American Airlines
Thu, Oct 29 - Fri, Oct 30
ONT
Ontario
FSD
Sioux Falls
CA $1,061 Roundtrip, found 6 days ago
CA $1,061
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Oct 29 from Ontario to Sioux Falls, returning Fri, Oct 30, priced at CA $1,061 found 6 days ago
American Airlines
Thu, Oct 29 - Fri, Oct 30
ONT
Ontario
FSD
Sioux Falls
CA $1,080 Roundtrip, found 6 days ago
CA $1,080
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Oct 29 from Ontario to Sioux Falls, returning Fri, Oct 30, priced at CA $1,080 found 6 days ago

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

February is typically the cheapest month to fly

From CA $220 - CA $864 per traveller.

Frequently asked questions

How much does a flight from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) cost?
You can find one-way and return flights from ONT to FSD with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when ONT to FSD ticket fares go up or down.
What is the cheapest month to fly from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
If you're looking for the most budget-friendly time to fly from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional), May is typically the cheapest month. You can expect average return fares around CA$511 during this time. May often sees lower prices as it's before the peak summer travel season, when demand tends to increase. Other cheap months to fly from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) include January and September.
Which airlines fly direct from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
Enter ONT to FSD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
Frontier Airlines is one of the cheapest airlines offering connecting return flights from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional), with tickets starting from around CA$177 for flights that can be booked for departure within the next year. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
To find a cheap flight from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
The best time to fly from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD) is typically May or September. These months offer a great balance, with return flights averaging around CA$511. You'll also find plenty of flight options during these times, as they are popular for travel. If you're flexible, these months give you both affordable fares and excellent flight schedules to work with.
How many flights per day from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
There are approximately 22 connecting flights per day from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional). Some common connection points include San Francisco Intl. (SFO), Dallas-Fort Worth Intl. (DFW), and Salt Lake City Intl. (SLC).
What is the earliest flight from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
The earliest flight from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) typically departs around 12:55 AM local time. This flight is operated by American Airlines. This is a seasonal service, active only in August. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
You'll find the most flights from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) on Fridays, with around 17 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, United, and Delta. Fridays offer notably more flight options compared to other days of the week, so if flexibility is key, this is a great day to consider flying.
What are the most popular departure times for flights from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
The most popular departure times for flights from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) are in the early morning, from 6am to 9am. Many major carriers, including American Airlines, United and Delta, offer flights during this window. Many travelers prefer this time because it allows for an early start to their journey, often getting you to your destination with plenty of day left.
How long does it take to fly from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
There are no nonstop flights from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional). The shortest flights typically involve one stop, taking around 8 hours 48 minutes. Flights with two or more stops usually take longer, averaging about 11 hours. The distance between these two airports is approximately 2,086 kilometers. Keep in mind that actual travel times can vary based on layover durations, routing, and weather conditions.
Can you fly business or first class from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
Yes, you can fly business class or first class between Ontario Intl. Airport (ONT) and Sioux Falls, SD (FSD-Sioux Falls Regional).You can fly business class with Frontier Airlines and Delta.First class cabins are available on Delta, United, and American Airlines.
How do I earn miles on a Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight with Expedia?
It's easy to earn miles on a Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sioux Falls, SD (FSD) from Ontario Intl. Airport (ONT)?
If you're planning to travel to Sioux Falls from Los Angeles - Ontario Intl. (ONT), you can fly directly into Sioux Falls Regional (FSD). Some flights may connect through major hubs like San Francisco Intl. (SFO), Salt Lake City Intl. (SLC), or Seattle - Tacoma Intl. (SEA) before reaching Sioux Falls. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) at the last minute?
Typically, booking a last minute flight from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight and hotel package?
Securing a Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional)?
If you booked your Ontario Intl. Airport (ONT) to Sioux Falls, SD (FSD-Sioux Falls Regional) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Sioux Falls Regional
Roundtrip price
CA $943
Distance
2073 km

Book with confidence

Los Angeles to Sioux Falls Flights

The easy way to book your flights from Ontario Intl. Airport to Sioux Falls 

With Expedia, it’s simple to find and book flights to Sioux Falls from Ontario Intl. Airport whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 8 airlines that cover this route. There are nonstop flights to Sioux Falls Regional, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Ontario Intl. Airport to Sioux Falls today, tomorrow, or this week.  

 

Save dollars with cheap flights from Ontario Intl. Airport, ONT to Sioux Falls Regional, FSD 

Sort your search results by price to find great deals on your flight from Ontario Intl. Airport to Sioux Falls—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Sioux Falls from Ontario Intl. Airport currently is just CA $944 rising to CA $1,080.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Sioux Falls  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Sioux Falls from Ontario Intl. Airport 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Sioux Falls with Expedia today.

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