HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sioux Falls

$80+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FSD
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Sioux Falls with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 23, 2026.

This Frontier deal was found by Cheapflights users on 4/19. 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 5/86:00 am
ONT
-
FSD
1 stop7h 22m
Frontier
Wed 5/137:18 pm
FSD
-
ONT
1 stop6h 31m
Frontier
Deal found 4/19$180
This Booking.com deal was found by Cheapflights users on 4/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1310:50 am
ONT
-
FSD
1 stop5h 43m
Frontier
Mon 5/184:07 pm
FSD
-
ONT
1 stop19h 58m
Frontier
Deal found 4/19$212
This Frontier deal was found by Cheapflights users on 4/20. 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 6/56:00 am
ONT
-
FSD
1 stop7h 40m
Frontier
Mon 6/84:25 pm
FSD
-
ONT
1 stop9h 24m
Frontier
Deal found 4/20$230
This Booking.com deal was found by Cheapflights users on 4/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1710:50 am
ONT
-
FSD
1 stop6h 29m
Frontier
Wed 7/88:14 pm
FSD
-
ONT
1 stop15h 51m
Frontier
Deal found 4/21$237
This Frontier deal was found by Cheapflights users on 4/20. 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 6/56:00 am
ONT
-
FSD
1 stop7h 40m
Frontier
Fri 6/128:14 pm
FSD
-
ONT
1 stop5h 35m
Frontier
Deal found 4/20$250
This Priceline deal was found by Cheapflights users on 4/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:50 am
ONT
-
FSD
1 stop5h 43m
Frontier
Mon 5/114:07 pm
FSD
-
ONT
1 stop9h 42m
Frontier
Deal found 4/22$255
This Booking.com deal was found by Cheapflights users on 4/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
ONT
-
FSD
1 stop7h 22m
Frontier
Mon 5/114:07 pm
FSD
-
ONT
1 stop19h 58m
Frontier
Deal found 4/22$263
This Booking.com deal was found by Cheapflights users on 4/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/710:50 am
ONT
-
FSD
1 stop26h 32m
Frontier
Wed 5/137:18 pm
FSD
-
ONT
1 stop16h 47m
Frontier
Deal found 4/19$264
This Priceline deal was found by Cheapflights users on 4/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:00 am
ONT
-
FSD
1 stop7h 22m
Frontier
Wed 5/207:18 pm
FSD
-
ONT
1 stop6h 31m
Frontier
Deal found 4/22$270
This American Airlines deal was found by Cheapflights users on 4/22. 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 9/1512:35 pm
ONT
-
FSD
1 stop7h 20m
American Airlines
Sat 9/198:00 am
FSD
-
ONT
1 stop5h 29m
American Airlines
Deal found 4/22$311
This Frontier deal was found by Cheapflights users on 4/22. 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.
Wed 7/226:00 am
ONT
-
FSD
1 stop11h 19m
Frontier
Mon 7/278:14 pm
FSD
-
ONT
1 stop5h 35m
Frontier
Deal found 4/22$315
This Delta deal was found by Cheapflights users on 4/20. 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.
Wed 8/1212:00 pm
ONT
-
FSD
1 stop8h 09m
Delta
Wed 8/198:15 am
FSD
-
ONT
2 stops9h 59m
Delta
Deal found 4/20$316

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 April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$180
(Expedia)

One-way from

$80
(Booking.com)

Popular in

March

Cheapest in

October

Average price

$469
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. 9% potential increase in price ($41 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 April 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 April 23, 2026.
Use the filters below to find and compare flights from Ontario to Sioux Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 5/15

1:29 pm-11:11 pm

2 stops7h 42m

Sioux Falls Joe Foss Field

Sun 8/23

1:20 pm-11:44 pm

2 stops12h 24m

$359

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 5/28

5:50 pm-10:15 am

2 stops14h 25m

Sioux Falls Joe Foss Field

Wed 6/3

8:19 am-4:17 pm

2 stops9h 58m

$384

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Wed 8/12

12:00 pm-10:09 pm

1 stop8h 09m

Sioux Falls Joe Foss Field

Wed 8/19

5:25 am-11:04 am

1 stop7h 39m

$385

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Tue 8/11

1:00 pm-10:46 pm

2 stops7h 46m

Sioux Falls Joe Foss Field

Wed 8/19

5:25 am-11:04 am

1 stop7h 39m

$390

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sat 8/8

7:05 am-7:56 pm

1 stop10h 51m

Sioux Falls Joe Foss Field

Sun 8/9

5:04 am-12:08 pm

2 stops9h 04m

$430

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sun 7/5

5:00 am-12:35 pm

1 stop5h 35m

Sioux Falls Joe Foss Field

Tue 7/28

12:56 pm-10:37 pm

2 stops11h 41m

$507
Quickest round-trip

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 8/13

1:18 pm-8:04 pm

1 stop4h 46m

Sioux Falls Joe Foss Field

Sun 8/16

5:05 pm-8:52 pm

1 stop5h 47m

$553

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 5/21

1:18 pm-8:08 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Wed 5/27

6:00 am-9:55 pm

2 stops17h 55m

$640

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 7/30

6:00 am-4:23 pm

2 stops8h 23m

Sioux Falls Joe Foss Field

Sun 8/2

9:30 am-12:47 pm

1 stop5h 17m

$672

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Wed 5/13

1:40 pm-11:43 pm

1 stop8h 03m

Sioux Falls Joe Foss Field

Sun 5/17

9:00 am-12:38 pm

1 stop5h 38m

$677

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/18

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 April.
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, October is the cheapest month in which you can book a flight from Ontario to Sioux Falls (average of $230). Flying from Ontario to Sioux Falls in March is currently the most expensive (average of $470). 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.

How much does it cost to fly round-trip from Ontario to Sioux Falls?

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 April 23, 2026.
Read reviews from past customers who have flown United Airlines,American Airlines, andFrontier 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
9,635 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
United Airlines
7.4
Good
9,635 reviews
United Airlines
7.4
Good
9,635 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
American Airlines
7.1
Good
11,659 reviews
United Airlines
7.4
Good
9,635 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
Frontier
5.7
Fair
2,981 reviews
United Airlines
7.4
Good
9,635 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

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 $359, Delta can have you in Sioux Falls from Ontario in 7h 42m. Ontario and Sioux Falls are separated by a distance of 1295 mi.

  • 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 $303, respectively. Users have found that Frontier is 83% 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, October is the cheapest month in which you can book a flight from Ontario to Sioux Falls (average of $230). Flying from Ontario to Sioux Falls in March is currently the most expensive (average of $470). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$336FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$268Average$422FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$303Average$447FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.