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South Dakota

$131+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FSD
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
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 septiembre 17, 2025.

Round-trip from

$175
(Booking.com)

One-way from

$131
(Kiwi.com)

Popular in

March

Cheapest in

July

Average price

$376
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. 9% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 17, 2025.

This Booking.com deal was found by Cheapflights users on 9/15. 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.
jue. 11/66:53 amONT - FSD
1 stop4h 45mFrontier
lun. 11/102:32 pmFSD - ONT
1 stop11h 18mFrontier
Deal found 9/15$175
This Booking.com deal was found by Cheapflights users on 9/16. 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.
jue. 10/166:53 amONT - FSD
1 stop5h 31mFrontier
jue. 10/233:19 pmFSD - ONT
1 stop10h 31mFrontier
Deal found 9/16$218
This Booking.com deal was found by Cheapflights users on 9/15. 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.
jue. 10/166:53 amONT - FSD
1 stop5h 31mFrontier
dom. 10/192:23 pmFSD - ONT
1 stop21h 12mFrontier
Deal found 9/15$235
This American Airlines deal was found by Cheapflights users on 9/17. 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.
mié. 10/1512:47 pmONT - RAP
1 stop7h 32mAmerican Airlines
mié. 10/224:58 pmRAP - ONT
1 stop6h 44mAmerican Airlines
Deal found 9/17$259
This Booking.com deal was found by Cheapflights users on 9/17. 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.
vie. 10/176:53 amONT - FSD
1 stop9h 40mFrontier
lun. 10/207:28 pmFSD - ONT
1 stop6h 22mFrontier
Deal found 9/17$261
This United Airlines deal was found by Cheapflights users on 9/16. 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.
mié. 12/31:34 pmONT - FSD
1 stop4h 57mUnited Airlines
sáb. 12/65:21 pmFSD - ONT
1 stop5h 21mUnited Airlines
Deal found 9/16$269
This Delta deal was found by Cheapflights users on 9/16. 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.
sáb. 11/81:15 pmONT - RAP
2 stops8h 21mDelta
mar. 11/1811:07 amRAP - ONT
2 stops12h 48mDelta
Deal found 9/16$269
This Delta deal was found by Cheapflights users on 9/16. 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.
vie. 10/245:50 pmONT - FSD
2 stops14h 23mDelta
mar. 10/285:20 amFSD - ONT
2 stops8h 56mDelta
Deal found 9/16$279
This United Airlines deal was found by Cheapflights users on 9/17. 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.
mié. 10/159:36 amONT - RAP
2 stops9h 58mUnited Airlines
mié. 10/228:30 amRAP - ONT
1 stop5h 21mUnited Airlines
Deal found 9/17$279
This United Airlines deal was found by Cheapflights users on 9/15. 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.
mar. 9/301:15 pmONT - RAP
1 stop6h 19mUnited Airlines
sáb. 10/49:00 amRAP - ONT
1 stop4h 51mUnited Airlines
Deal found 9/15$289
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
mié. 10/18:00 amONT - FSD
1 stop24h 51mMultiple Airlines
dom. 10/52:54 pmFSD - ONT
2 stops32h 02mMultiple Airlines
Deal found 9/16$306
This United Airlines deal was found by Cheapflights users on 9/15. 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.
mié. 12/171:34 pmONT - RAP
1 stop5h 56mUnited Airlines
sáb. 1/172:40 pmRAP - ONT
2 stops9h 13mUnited Airlines
Deal found 9/15$312

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 septiembre 17, 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

jue. 11/6

6:53 am-1:38 pm

1 stop4h 45m

Sioux Falls Joe Foss Field

lun. 11/10

2:32 pm-11:50 pm

1 stop11h 18m

$175

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

mié. 12/17

1:34 pm-8:30 pm

1 stop5h 56m

Rapid City

sáb. 1/17

4:40 pm-8:58 pm

1 stop5h 18m

$259

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

mié. 12/3

1:34 pm-8:31 pm

1 stop4h 57m

Sioux Falls Joe Foss Field

sáb. 12/6

8:00 am-8:42 pm

2 stops14h 42m

$274

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

mié. 12/3

6:40 am-11:11 pm

2 stops14h 31m

Sioux Falls Joe Foss Field

sáb. 12/6

5:18 am-12:22 pm

2 stops9h 04m

$279

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

vie. 10/24

5:50 pm-10:13 am

2 stops14h 23m

Sioux Falls Joe Foss Field

mar. 10/28

5:20 am-12:16 pm

2 stops8h 56m

$279

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

jue. 10/16

4:17 pm-6:33 pm

2 stops24h 16m

Sioux Falls Joe Foss Field

jue. 10/23

3:19 pm-11:50 pm

1 stop10h 31m

$288

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

mar. 9/30

1:15 pm-8:34 pm

1 stop6h 19m

Rapid City

sáb. 10/4

9:00 am-12:51 pm

1 stop4h 51m

$289

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

mié. 10/1

8:00 am-10:51 am

1 stop24h 51m

Sioux Falls Joe Foss Field

dom. 10/5

2:54 pm-8:56 pm

2 stops32h 02m

$306

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

sáb. 9/27

1:15 pm-6:40 pm

1 stop4h 25m

Rapid City

sáb. 10/4

5:30 am-12:13 pm

2 stops7h 43m

$334

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

mié. 10/15

5:05 am-12:37 pm

1 stop6h 32m

Rapid City

mié. 10/22

3:20 pm-8:24 pm

1 stop6h 04m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 31 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 septiembre 17, 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 septiembre 17, 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
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

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
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

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
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

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
3,173 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

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?

    Frontier, United Airlines, and Delta can get you from Ontario to South Dakota in just under 4h 45m. Your travel time can differ by up to 9h 46m. 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, 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

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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$258Average$442FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$441FlexibilityNo cancel feeOn-time69%

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