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$125+ Cheap flights from Sioux Falls to Ontario (FSD - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — ONT
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheap flight deals from Sioux Falls to Ontario

Cheapest flights from Sioux Falls to Ontario
Explore the most affordable flight options available from Sioux Falls to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This Frontier deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:16 pm
FSD
-
ONT
1 stop11h 43m
Frontier
Fri 3/66:15 am
ONT
-
FSD
1 stop11h 44m
Frontier
Deal found 2/10$220
This Expedia deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/208:54 pm
FSD
-
ONT
1 stop5h 05m
Frontier
Mon 3/236:15 am
ONT
-
FSD
1 stop11h 44m
Frontier
Deal found 2/10$250
This United Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:00 pm
FSD
-
ONT
1 stop5h 20m
United Airlines
Sat 8/221:00 pm
ONT
-
FSD
1 stop5h 46m
United Airlines
Deal found 2/10$271
This Frontier deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:16 pm
FSD
-
ONT
1 stop11h 43m
Frontier
Fri 2/276:00 am
ONT
-
FSD
1 stop4h 56m
Frontier
Deal found 2/10$276
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:53 pm
FSD
-
ONT
1 stop18h 47m
Multiple Airlines
Thu 5/1412:59 am
ONT
-
FSD
1 stop16h 37m
Multiple Airlines
Deal found 2/10$287
This American Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:15 pm
FSD
-
ONT
1 stop8h 53m
American Airlines
Sat 8/226:10 am
ONT
-
FSD
1 stop8h 25m
American Airlines
Deal found 2/10$300
This Frontier deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:16 pm
FSD
-
ONT
1 stop11h 43m
Frontier
Sun 3/16:10 am
ONT
-
FSD
1 stop5h 11m
Frontier
Deal found 2/10$315
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/102:29 pm
FSD
-
ONT
2 stops35h 30m
Multiple Airlines
Mon 3/166:15 am
ONT
-
FSD
1 stop11h 44m
Multiple Airlines
Deal found 2/8$324
This American Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/101:22 pm
FSD
-
ONT
1 stop7h 20m
American Airlines
Tue 3/1710:56 am
ONT
-
FSD
1 stop8h 44m
American Airlines
Deal found 2/8$327

Find flight deals from Sioux Falls to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$220
(Frontier)

One-way from

$125
(Frontier)

Popular in

April

Cheapest in

June

Average price

$375
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Ontario flights.
Search Deals
From Sioux Falls Joe Foss Field to Ontario
Search Deals
One-way flight from Sioux Falls Joe Foss Field to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from Sioux Falls to Ontario that are best for you.

Fly from

Sioux Falls

Fly to

Ontario

Route

Depart

Return

Price

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 5/11

8:53 pm-1:40 pm

1 stop18h 47m

Ontario

Thu 5/14

12:59 am-7:36 pm

1 stop16h 37m

$287

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 3/10

2:29 pm-11:59 pm

2 stops35h 30m

Ontario

Mon 3/16

6:15 am-7:59 pm

1 stop11h 44m

$324

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 3/10

1:22 pm-6:42 pm

1 stop7h 20m

Ontario

Tue 3/17

10:56 am-9:40 pm

1 stop8h 44m

$327

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Fri 3/20

8:54 pm-11:59 pm

1 stop5h 05m

Ontario

Mon 3/23

6:15 am-7:59 pm

1 stop11h 44m

$350

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 4/14

9:05 am-6:02 pm

2 stops10h 57m

Ontario

Sat 4/18

7:00 am-5:44 pm

1 stop8h 44m

$356

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 4/14

9:05 am-6:02 pm

2 stops10h 57m

Ontario

Tue 4/21

11:05 am-11:44 pm

2 stops10h 39m

$361

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 2/23

2:42 pm-11:59 pm

1 stop11h 17m

Ontario

Fri 2/27

6:00 am-12:56 pm

1 stop4h 56m

$362

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 6/1

5:06 pm-8:17 pm

1 stop5h 11m

Ontario

Sat 6/6

1:00 pm-8:04 pm

1 stop5h 04m

$399

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Fri 5/1

1:35 pm-10:59 pm

2 stops11h 24m

Ontario

Tue 5/5

1:40 pm-11:43 pm

1 stop8h 03m

$414

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 2/24

5:00 pm-8:50 pm

1 stop5h 50m

Ontario

Sat 2/28

1:45 pm-8:39 pm

1 stop4h 54m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 15 results
1
2

Compare providers for flights from Sioux Falls to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux Falls to Ontario in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sioux Falls-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux Falls-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux Falls-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux Falls-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux Falls-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sioux Falls to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Sioux Falls with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sioux Falls to Ontario

What is the cheapest month to book a flight from Sioux Falls to Ontario?

Currently, July is the cheapest month in which you can book a flight from Sioux Falls to Ontario (average of $95). Flying from Sioux Falls to Ontario in March is currently the most expensive (average of $263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated February 11, 2026.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Sioux Falls to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,273 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,273 reviews
United Airlines
7.4
Good
9,273 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
American Airlines
7.2
Good
11,265 reviews
United Airlines
7.4
Good
9,273 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Sioux Falls to Ontario?

    American Airlines, Frontier, and United Airlines can get you from Sioux Falls to Ontario in just under 5h 05m. Your travel time can differ by up to 5h 52m. Sioux Falls and Ontario are separated by a distance of 1295 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Sioux Falls to Ontario round-trip?

    Our cheapest airline available from Sioux Falls to Ontario is United Airlines. Our recent data shows that you can find tickets from as low as $268 on this airline. An additional option worth looking into is American Airlines, starting at $274. United Airlines is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Sioux Falls to Ontario that include hotel bookings?

    Yes. In addition to deals on Sioux Falls to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sioux Falls to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux Falls to Ontario.

  • Can I find deals for business class flights from Sioux Falls to Ontario?

    Yes. Cheapflights offers flight deals from Sioux Falls to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sioux Falls to Ontario?

    Currently, July is the cheapest month in which you can book a flight from Sioux Falls to Ontario (average of $95). Flying from Sioux Falls to Ontario in March is currently the most expensive (average of $263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Sioux Falls to Ontario

Discover the top 2 airlines that operate flights from Sioux Falls to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$268Average$411FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$274Average$509FlexibilityNo cancel feeOn-time71%

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