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Sioux Falls

$122+ Cheap flights from Ontario to Sioux Falls (ONT - FSD)

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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FSD
Mar 9 — Mar 161
Mon 3/9
Mon 3/16
1 adult, Economy
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Find cheap flights from Ontario to Sioux Falls with Cheapflights

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Cheap flight deals from Ontario to Sioux Falls

Cheapest flights from Ontario to Sioux Falls
Explore the most affordable flight options available from Ontario to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 7, 2026.

This Frontier deal was found by Cheapflights users on 2/4. 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 2/196:05 am
ONT
-
FSD
1 stop5h 16m
Frontier
Thu 2/262:16 pm
FSD
-
ONT
1 stop11h 43m
Frontier
Deal found 2/4$190
This Frontier deal was found by Cheapflights users on 2/4. 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 2/196:05 am
ONT
-
FSD
1 stop5h 16m
Frontier
Mon 2/232:42 pm
FSD
-
ONT
1 stop11h 17m
Frontier
Deal found 2/4$211
This Frontier deal was found by Cheapflights users on 2/6. 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.
Fri 2/206:00 am
ONT
-
FSD
1 stop4h 56m
Frontier
Sun 2/222:16 pm
FSD
-
ONT
1 stop11h 43m
Frontier
Deal found 2/6$232
This Frontier deal was found by Cheapflights users on 2/6. 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.
Sun 2/226:10 am
ONT
-
FSD
1 stop5h 11m
Frontier
Thu 2/262:16 pm
FSD
-
ONT
1 stop11h 43m
Frontier
Deal found 2/6$297
This United Airlines deal was found by Cheapflights users on 2/5. 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.
Fri 2/201:45 pm
ONT
-
FSD
1 stop4h 54m
United Airlines
Tue 2/249:00 am
FSD
-
ONT
1 stop5h 43m
United Airlines
Deal found 2/5$339
This Delta deal was found by Cheapflights users on 2/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/201:15 pm
ONT
-
FSD
1 stop8h 15m
Delta
Tue 2/245:00 am
FSD
-
ONT
2 stops9h 07m
Delta
Deal found 2/5$344
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Sat 5/21:40 pm
ONT
-
FSD
1 stop8h 03m
United Airlines
Sat 5/96:00 am
FSD
-
ONT
2 stops8h 22m
United Airlines
Deal found 2/6$356
This United Airlines deal was found by Cheapflights users on 2/4. 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.
Fri 4/101:43 pm
ONT
-
FSD
1 stop8h 01m
United Airlines
Tue 4/149:05 am
FSD
-
ONT
1 stop5h 33m
United Airlines
Deal found 2/4$360
This Mytrip deal was found by Cheapflights users on 2/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/122:08 pm
ONT
-
FSD
1 stop20h 48m
Frontier
Mon 2/162:42 pm
FSD
-
ONT
1 stop11h 17m
Frontier
Deal found 2/5$363

Find flight deals from Ontario to Sioux Falls

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Sioux Falls (FSD). 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 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$190
(Frontier)

One-way from

$122
(Booking.com)

Popular in

July

Cheapest in

October

Average price

$348
Provider with most accurate pricing for Ontario-Sioux Falls Joe Foss Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Sioux Falls Joe Foss Field flights.
Search Deals
From Ontario to Sioux Falls Joe Foss Field
Search Deals
One-way flight from Ontario to Sioux Falls Joe Foss Field
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 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 Ontario to Sioux Falls 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 7, 2026.
Use the filters below to find and compare flights from Ontario to Sioux Falls that are best for you.

Fly from

Ontario

Fly to

Sioux Falls

Route

Depart

Return

Price

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 2/19

6:05 am-1:21 pm

1 stop5h 16m

Sioux Falls Joe Foss Field

Thu 2/26

2:16 pm-11:59 pm

1 stop11h 43m

$190

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 3/26

1:50 pm-8:40 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Mon 3/30

4:57 pm-8:36 pm

1 stop5h 39m

$339

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 2/20

1:45 pm-8:39 pm

1 stop4h 54m

Sioux Falls Joe Foss Field

Tue 2/24

9:00 am-12:43 pm

1 stop5h 43m

$339

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 2/20

1:10 pm-10:55 pm

2 stops7h 45m

Sioux Falls Joe Foss Field

Tue 2/24

5:00 am-12:07 pm

2 stops9h 07m

$349

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sat 5/2

1:40 pm-11:43 pm

1 stop8h 03m

Sioux Falls Joe Foss Field

Sat 5/9

6:00 am-12:22 pm

2 stops8h 22m

$356

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 4/10

1:43 pm-11:44 pm

1 stop8h 01m

Sioux Falls Joe Foss Field

Tue 4/14

9:05 am-12:38 pm

1 stop5h 33m

$360

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 3/13

6:15 am-7:59 pm

1 stop11h 44m

$195

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 2/13

6:00 am-12:56 pm

1 stop4h 56m

$200

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 2/12

6:05 am-1:21 pm

1 stop5h 16m

$220

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sun 3/22

1:55 pm-7:59 pm

2 stops28h 04m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 15 results
1
2

Compare providers for flights from Ontario to Sioux Falls

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 Ontario to Sioux Falls in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Ontario-Sioux Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Sioux Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Sioux Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Sioux Falls 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 Ontario-Sioux Falls 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 Ontario to Sioux Falls

Have a flexible travel schedule? Discover the best time to fly to Sioux Falls from Ontario 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 Ontario to Sioux Falls

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

Currently, May is the cheapest month in which you can book a flight from Ontario to Sioux Falls (average of $110). Flying from Ontario to Sioux Falls in March is currently the most expensive (average of $268). 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 Sioux Falls

Get insights into the airlines that provide service to Sioux Falls. 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 Sioux Falls. Reviews last updated February 7, 2026.
Read reviews from past customers who have flown United Airlines, American Airlines, and Frontier from Ontario to Sioux Falls. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,245 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,245 reviews
United Airlines
7.4
Good
9,245 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
11,248 reviews
United Airlines
7.4
Good
9,245 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Frontier
5.7
Fair
3,054 reviews
United Airlines
7.4
Good
9,245 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Ontario to Sioux Falls. 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 Ontario to Sioux Falls?

    For as low as $339, Frontier can have you in Sioux Falls from Ontario in 4h 50m. Ontario and Sioux Falls are separated by a distance of 1295 mi. This flight may include one or multiple stops.

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

    Currently priced at $65, Frontier will fly you from Ontario to Sioux Falls and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $268 and $293, respectively. Users have found that Frontier is 82% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Sioux Falls 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 Ontario to Sioux Falls?

    Currently, May is the cheapest month in which you can book a flight from Ontario to Sioux Falls (average of $110). Flying from Ontario to Sioux Falls in March is currently the most expensive (average of $268). 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

Traveling to a place near Sioux Falls?

Book flights to Sioux Falls if you plan to visit one of these locations
Marshall

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Top 3 airlines flying from Ontario to Sioux Falls

Discover the top 3 airlines that operate flights from Ontario to Sioux Falls. 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 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$230FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$268Average$403FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$293Average$438FlexibilityNo cancel feeOn-time69%

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