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South Dakota

$165+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FSD
Apr 6 — Apr 131
Mon 4/6
Mon 4/13
1 adult, Economy
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Cheap 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 March 7, 2026.

This Expedia deal was found by Cheapflights users on 3/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:20 am
ONT
-
FSD
1 stop10h 11m
Frontier
Mon 4/137:21 pm
FSD
-
ONT
1 stop6h 35m
Frontier
Deal found 3/6$240
This Frontier deal was found by Cheapflights users on 3/6. 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 4/36:20 am
ONT
-
FSD
1 stop10h 11m
Frontier
Mon 4/67:21 pm
FSD
-
ONT
1 stop6h 35m
Frontier
Deal found 3/6$250
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:20 am
ONT
-
FSD
1 stop10h 11m
Multiple Airlines
Mon 4/139:35 pm
FSD
-
ONT
2 stops39h 09m
Multiple Airlines
Deal found 3/6$277
This Frontier deal was found by Cheapflights users on 3/4. 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.
Fri 4/36:20 am
ONT
-
FSD
1 stop10h 11m
Frontier
Fri 4/107:21 pm
FSD
-
ONT
1 stop6h 35m
Frontier
Deal found 3/4$290
This American Airlines deal was found by Cheapflights users on 3/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:52 pm
ONT
-
FSD
1 stop5h 07m
American Airlines
Sat 5/92:40 pm
FSD
-
ONT
1 stop6h 54m
American Airlines
Deal found 3/5$291
This Kiwi.com deal was found by Cheapflights users on 3/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:20 am
ONT
-
FSD
1 stop10h 11m
Multiple Airlines
Sun 4/129:10 pm
FSD
-
ONT
2 stops24h 57m
Multiple Airlines
Deal found 3/4$300
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Thu 6/41:18 pm
ONT
-
FSD
1 stop4h 50m
United Airlines
Tue 6/96:00 am
FSD
-
ONT
2 stops8h 12m
United Airlines
Deal found 3/6$305
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 3/166:15 am
ONT
-
FSD
1 stop11h 44m
Frontier
Fri 3/208:54 pm
FSD
-
ONT
1 stop29h 05m
Frontier
Deal found 3/3$307
This American Airlines deal was found by Cheapflights users on 3/3. 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 4/1010:59 am
ONT
-
FSD
1 stop8h 55m
American Airlines
Tue 4/141:41 pm
FSD
-
ONT
1 stop9h 13m
American Airlines
Deal found 3/3$320
This American Airlines deal was found by Cheapflights users on 3/2. 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 3/175:02 pm
ONT
-
FSD
1 stop4h 56m
American Airlines
Sat 3/212:42 pm
FSD
-
ONT
1 stop6h 25m
American Airlines
Deal found 3/2$339
This United Airlines deal was found by Cheapflights users on 3/2. 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 11/31:00 pm
ONT
-
RAP
1 stop6h 33m
United Airlines
Sat 11/710:45 am
RAP
-
ONT
2 stops13h 21m
United Airlines
Deal found 3/2$364
This United Airlines deal was found by Cheapflights users on 3/4. 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 5/15:00 am
ONT
-
RAP
1 stop7h 09m
United Airlines
Fri 5/84:13 pm
RAP
-
ONT
1 stop5h 23m
United Airlines
Deal found 3/4$379

Find 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 March 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$240
(Expedia)

One-way from

$165
(Frontier)

Popular in

April

Cheapest in

October

Average price

$449
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 South Dakota
Search Deals
One-way flight from Ontario to South Dakota
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 7, 2026.
Use the filters below to find and compare flights from Ontario to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Wed 3/18

11:59 pm-10:46 am

1 stop8h 47m

Sioux Falls Joe Foss Field

Mon 3/23

5:10 pm-8:50 pm

1 stop5h 40m

$359
Quickest round-trip

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 4/10

1:43 pm-8:30 pm

1 stop4h 47m

Sioux Falls Joe Foss Field

Tue 4/14

9:05 am-12:38 pm

1 stop5h 33m

$380

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 5/7

1:40 pm-11:43 pm

1 stop8h 03m

Sioux Falls Joe Foss Field

Tue 5/12

11:25 am-5:52 pm

2 stops8h 27m

$391

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Tue 6/2

5:00 am-12:29 pm

1 stop6h 29m

Rapid City

Sun 6/7

11:20 am-5:28 pm

1 stop7h 08m

$394

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Tue 3/17

6:15 am-8:40 pm

2 stops12h 25m

Sioux Falls Joe Foss Field

Sat 3/21

3:10 pm-10:18 pm

1 stop9h 08m

$410

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 5/15

7:05 am-7:49 pm

1 stop10h 44m

Sioux Falls Joe Foss Field

Sun 8/23

5:15 am-12:49 pm

2 stops9h 34m

$419

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sat 3/21

5:15 am-1:13 pm

1 stop6h 58m

Rapid City

Wed 3/25

5:00 am-12:18 pm

2 stops8h 18m

$430

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sat 5/23

1:18 pm-8:08 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Sat 5/30

5:05 pm-8:42 pm

1 stop5h 37m

$435

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Fri 4/24

5:10 am-1:08 pm

1 stop6h 58m

Rapid City

Sat 5/9

2:35 pm-8:36 pm

1 stop7h 01m

$439

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Wed 3/18

11:59 pm-10:46 am

1 stop8h 47m

Sioux Falls Joe Foss Field

Tue 3/24

9:00 am-5:41 pm

2 stops10h 41m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 34 resultsSorted by cheapest first
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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, May is the cheapest month in which you can book a flight from Ontario to South Dakota (average of $110). Flying from Ontario to South Dakota 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 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 March 7, 2026.
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
9,404 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

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
9,404 reviews
United Airlines
7.4
Good
9,404 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

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
7.1
Good
11,395 reviews
United Airlines
7.4
Good
9,404 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

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
5.7
Fair
3,040 reviews
United Airlines
7.4
Good
9,404 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

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.

  • How long is the flight from Ontario to South Dakota?

    United Airlines and Delta can get you from Ontario to South Dakota in just under 4h 47m. Your travel time can differ by up to 5h 57m. There are 1295 mi between Ontario and South Dakota. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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, May is the cheapest month in which you can book a flight from Ontario to South Dakota (average of $110). Flying from Ontario to South Dakota 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

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Alternative routes for Ontario to South Dakota

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$230FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$258Average$449FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$423FlexibilityNo cancel feeOn-time69%

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