HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
South Dakota

$115+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FSD
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to South Dakota 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 South Dakota

Keep the following information in mind while searching for Ontario to South Dakota flight deals. Data was last updated July 2, 2025.

Round-trip from

$231
(Expedia)

One-way from

$115
(FlightHub)

Popular in

March

Cheapest in

February

Average price

$328
From Ontario to South Dakota
Search Deals
One-way flight from Ontario to South Dakota
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 2, 2025.

This Expedia deal was found by Cheapflights users on 7/1. 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.
Wed 7/1612:59 amONT - FSD
1 stop11h 03mFrontier
Mon 7/217:32 pmFSD - ONT
1 stop6h 18mFrontier
Deal found 7/1$231
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Wed 7/305:05 amONT - RAP
1 stop6h 41mUnited Airlines
Sat 8/212:38 pmRAP - ONT
1 stop5h 47mUnited Airlines
Deal found 6/29$259
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 8/2110:50 amONT - FSD
1 stop8h 14mAmerican Airlines
Sun 8/245:15 pmFSD - ONT
1 stop8h 53mAmerican Airlines
Deal found 6/30$269
This Trip.com deal was found by Cheapflights users on 7/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/246:00 amONT - RAP
1 stop14h 09mMultiple Airlines
Sun 7/279:49 pmRAP - ONT
1 stop24h 03mMultiple Airlines
Deal found 7/2$284
This American Airlines deal was found by Cheapflights users on 6/30. 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 10/48:15 amONT - RAP
1 stop6h 49mAmerican Airlines
Wed 10/812:08 pmRAP - ONT
1 stop7h 55mAmerican Airlines
Deal found 6/30$299
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 7/81:15 pmONT - FSD
2 stops8h 29mDelta
Tue 7/156:00 amFSD - ONT
2 stops8h 14mDelta
Deal found 6/30$335
This United Airlines deal was found by Cheapflights users on 6/30. 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 8/21:34 pmONT - FSD
1 stop7h 32mUnited Airlines
Sat 8/95:10 pmFSD - ONT
1 stop5h 44mUnited Airlines
Deal found 6/30$374

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 July 2, 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

Wed 7/16

12:59 am-2:02 pm

1 stop11h 03m

Sioux Falls Joe Foss Field

Mon 7/21

7:32 pm-11:50 pm

1 stop6h 18m

$231

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Wed 7/30

5:05 am-12:46 pm

1 stop6h 41m

Rapid City

Sat 8/2

12:38 pm-5:25 pm

1 stop5h 47m

$259

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 8/21

10:50 am-9:04 pm

1 stop8h 14m

Sioux Falls Joe Foss Field

Sun 8/24

5:15 pm-12:08 am

1 stop8h 53m

$269

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Thu 7/24

6:00 am-9:09 pm

1 stop14h 09m

Rapid City

Sun 7/27

9:49 pm-8:52 pm

1 stop24h 03m

$284

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Wed 8/6

6:10 am-4:08 pm

1 stop8h 58m

Rapid City

Sat 8/16

5:39 am-11:52 am

1 stop7h 13m

$299

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Sat 8/2

1:34 pm-11:06 pm

1 stop7h 32m

Sioux Falls Joe Foss Field

Sat 8/9

5:10 pm-8:54 pm

1 stop5h 44m

$374

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Tue 7/22

12:59 am-6:54 pm

1 stop15h 55m

$115

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sun 8/3

6:00 am-8:59 pm

1 stop13h 59m

$135

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 7/24

5:14 pm-11:07 am

1 stop15h 53m

$148

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Mon 7/21

1:15 pm-11:44 pm

2 stops8h 29m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 15 results
1
2

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 July 2, 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 July 2, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines 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.
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
8.0
Very good
7,975 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Frontier
5.9
Fair
3,286 reviews
Delta
8.0
Very good
7,975 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

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.

  • What are the cheapest airlines to fly from Ontario to South Dakota one-way?

    $115 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $170 and $179, respectively.

  • 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

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.

Alternative routes for Ontario to South Dakota

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Los Angeles to Seattle flights
Los Angeles to Newark flights
Los Angeles to Honolulu flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to San Francisco flights
San Francisco to Los Angeles flights
San Francisco to Las Vegas flights
Ontario to Seattle flights
Los Angeles to O'Hare Intl flights
San Francisco to Newark flights
San Francisco to Seattle flights
Los Angeles to Las Vegas flights
Los Angeles to LaGuardia flights
San Francisco to Santa Ana flights
Los Angeles to Portland flights
Santa Ana to San Francisco flights
Los Angeles to Orlando flights
Los Angeles to Boston flights
Santa Ana to Seattle flights
San Jose to Los Angeles flights
San Francisco to Honolulu flights
Santa Ana to Las Vegas flights
Los Angeles to Miami flights
Los Angeles to San Jose flights
Oakland to Las Vegas flights
San Francisco to LaGuardia flights
San Francisco to O'Hare Intl flights
Burbank to Las Vegas flights
San Jose to Seattle flights
Los Angeles to Denver flights
Ontario to Honolulu flights
Ontario to San Francisco flights
Oakland to Seattle flights
Ontario to Dallas/Fort Worth flights
Ontario to John F Kennedy Intl flights
Oakland to Los Angeles flights
Los Angeles to Fort Lauderdale flights
Los Angeles to Hobby flights
San Francisco to San Diego flights
Los Angeles to Kahului flights
San Jose to Las Vegas flights
Los Angeles to Atlanta flights
Ontario to O'Hare Intl flights
San Diego to John F Kennedy Intl flights
Los Angeles to Oakland flights
Los Angeles to Dulles Intl flights
San Diego to Seattle flights
Los Angeles to Salt Lake City flights

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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$338FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$179Average$385FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$284Average$433FlexibilityNo 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.