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South Dakota

$93+ Cheap flights from Ontario (ONT) to South Dakota

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FSD
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Ontario to South Dakota

Keep the following information in mind while searching for Ontario to South Dakota flight deals. Data was last updated August 14, 2025.

Round-trip from

$222
(FlightHub)

One-way from

$93
(Frontier)

Popular in

March

Cheapest in

July

Average price

$269
From Ontario to South Dakota
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One-way flight from Ontario to South Dakota
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Highest demand for flights based on searches. 8% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Ontario to South Dakota

Cheapest flights from Ontario to South Dakota
Explore the most affordable flight options available from Ontario to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Orbitz deal was found by Cheapflights users on 8/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2112:59 amONT - FSD
1 stop10h 24mFrontier
Mon 8/252:08 pmFSD - ONT
1 stop11h 42mFrontier
Deal found 8/14$185
This FlightHub deal was found by Cheapflights users on 8/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/113:43 pmONT - FSD
1 stop20h 26mFrontier
Mon 9/152:54 pmFSD - ONT
1 stop7h 00mFrontier
Deal found 8/14$222
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1912:59 amONT - FSD
1 stop11h 13mFrontier
Thu 8/212:08 pmFSD - ONT
1 stop11h 42mFrontier
Deal found 8/12$223
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Thu 9/256:00 amONT - RAP
1 stop9h 49mMultiple Airlines
Sun 9/285:39 pmRAP - ONT
1 stop14h 38mMultiple Airlines
Deal found 8/13$231
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Thu 9/119:16 amONT - RAP
1 stop6h 33mMultiple Airlines
Sun 9/145:39 pmRAP - ONT
1 stop14h 38mMultiple Airlines
Deal found 8/13$257
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sat 11/112:47 pmONT - RAP
1 stop7h 32mAmerican Airlines
Tue 11/45:34 amRAP - ONT
1 stop9h 28mAmerican Airlines
Deal found 8/14$259
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/201:42 pmONT - RAP
2 stops7h 17mUnited Airlines
Tue 9/309:56 amRAP - ONT
1 stop6h 06mUnited Airlines
Deal found 8/11$264
This Delta deal was found by Cheapflights users on 8/14. 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.
Sat 11/11:15 pmONT - RAP
2 stops8h 21mDelta
Tue 11/410:33 amRAP - ONT
2 stops13h 08mDelta
Deal found 8/14$269
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1312:59 amONT - FSD
1 stop11h 03mFrontier
Sun 8/172:57 pmFSD - ONT
1 stop20h 16mFrontier
Deal found 8/13$270
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1412:59 amONT - FSD
1 stop15h 38mFrontier
Sun 8/172:57 pmFSD - ONT
1 stop20h 16mFrontier
Deal found 8/13$277
This Delta deal was found by Cheapflights users on 8/12. 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 10/245:50 pmONT - RAP
2 stops15h 03mDelta
Tue 10/2810:33 amRAP - ONT
2 stops11h 47mDelta
Deal found 8/12$284
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Fri 10/2412:47 pmONT - RAP
1 stop7h 32mAmerican Airlines
Tue 10/284:59 pmRAP - ONT
2 stops17h 20mAmerican Airlines
Deal found 8/12$285

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to South Dakota 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 August 14, 2025.
Use the filters below to find and compare flights from Ontario to South Dakota that are best for you.

Fly from

Ontario

Fly to

South Dakota

Route

Depart

Return

Price

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 9/11

3:43 pm-2:09 pm

1 stop20h 26m

Sioux Falls Joe Foss Field

Mon 9/15

2:54 pm-7:54 pm

1 stop7h 00m

$222

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Thu 9/25

6:00 am-4:49 pm

1 stop9h 49m

Rapid City

Sun 9/28

5:39 pm-7:17 am

1 stop14h 38m

$231

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Thu 9/11

9:16 am-4:49 pm

1 stop6h 33m

Rapid City

Sun 9/14

5:39 pm-7:17 am

1 stop14h 38m

$257

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Fri 10/24

12:47 pm-9:19 pm

1 stop7h 32m

Rapid City

Tue 10/28

4:59 pm-10:42 pm

1 stop6h 43m

$259

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sat 9/20

1:15 pm-6:50 pm

1 stop4h 35m

Rapid City

Tue 9/30

9:56 am-3:02 pm

1 stop6h 06m

$259

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sat 11/1

12:47 pm-9:19 pm

1 stop7h 32m

Rapid City

Tue 11/4

5:34 am-2:02 pm

1 stop9h 28m

$259

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sat 11/1

1:15 pm-10:36 pm

2 stops8h 21m

Rapid City

Tue 11/4

10:33 am-9:20 pm

2 stops11h 47m

$269

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sat 8/30

10:50 am-9:03 pm

1 stop8h 13m

Sioux Falls Joe Foss Field

Wed 9/3

7:00 am-1:54 pm

1 stop8h 54m

$295

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Mon 9/22

5:40 pm-10:07 am

2 stops14h 27m

Sioux Falls Joe Foss Field

Sat 9/27

5:00 am-12:17 pm

2 stops9h 17m

$304

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Mon 9/22

1:10 pm-2:15 pm

1 stop23h 05m

Sioux Falls Joe Foss Field

Sat 9/27

2:45 pm-6:16 pm

1 stop5h 31m

$345

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 30 results
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Best time to book a flight from Ontario to South Dakota

Have a flexible travel schedule? Discover the best time to fly to South Dakota 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 South Dakota

What is the cheapest month to book a flight from Ontario to South Dakota?

Currently, September is the cheapest month in which you can book a flight from Ontario to South Dakota (average of $334). Flying from Ontario to South Dakota in December is currently the most expensive (average of $446). 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.

What is the cheapest time of day to fly from ONT to SD?

Find hourly flight availability from Ontario to South Dakota. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to South Dakota as you normally would.

Reviews of airlines servicing South Dakota

Get insights into the airlines that provide service to South Dakota. 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 South Dakota. Reviews last updated August 14, 2025.
See what other customers who have flown with United Airlines, American Airlines, and Frontier from Ontario to South Dakota have to say. 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
8,916 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

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
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

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
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

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
5.8
Fair
3,217 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

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 South Dakota. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to South Dakota?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to South Dakota. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • Can I find deals for flights from Ontario to South Dakota that include hotel bookings?

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

  • How can I find direct flights from Ontario to South Dakota?

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

  • Can I find deals for business class flights from Ontario to South Dakota?

    Yes. Cheapflights offers flight deals from Ontario to South Dakota 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 South Dakota?

    Currently, September is the cheapest month in which you can book a flight from Ontario to South Dakota (average of $334). Flying from Ontario to South Dakota in December is currently the most expensive (average of $446). 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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Alternative routes for Ontario to South Dakota

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Top 3 airlines flying from Ontario to South Dakota

Discover the top 3 airlines that operate flights from Ontario to South Dakota. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$362FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$258Average$402FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$284Average$449FlexibilityNo cancel feeOn-time69%

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