HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
South Dakota

$185+ 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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FSD
Jun 18 — Jun 251
Wed 6/18
Wed 6/25
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 June 13, 2025.

Round-trip from

$256
(FlightHub)

One-way from

$185
(Trip.com)

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. 6% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 13, 2025.

This FlightHub deal was found by Cheapflights users on 6/12. 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 8/512:59 amONT - FSD
1 stop15h 55mFrontier
Wed 8/273:07 pmFSD - ONT
1 stop10h 43mFrontier
Deal found 6/12$256
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/255:05 amONT - RAP
1 stop6h 41mUnited Airlines
Mon 7/2811:16 amRAP - ONT
1 stop7h 09mUnited Airlines
Deal found 6/10$259
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/128:14 amONT - RAP
1 stop6h 54mAmerican Airlines
Tue 8/195:39 amRAP - ONT
2 stops11h 45mAmerican Airlines
Deal found 6/11$264
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/411:49 amONT - FSD
1 stop9h 21mDelta
Wed 7/93:16 pmFSD - ONT
2 stops10h 26mDelta
Deal found 6/11$329
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1112:46 pmONT - FSD
1 stop7h 15mAmerican Airlines
Wed 7/162:44 pmFSD - ONT
1 stop5h 24mAmerican Airlines
Deal found 6/11$332
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 7/41:34 pmONT - FSD
1 stop8h 03mUnited Airlines
Wed 7/99:15 amFSD - ONT
1 stop5h 17mUnited Airlines
Deal found 6/11$349
This Delta deal was found by Cheapflights users on 6/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/205:51 pmONT - RAP
2 stops15h 14mDelta
Tue 11/256:20 amRAP - ONT
2 stops10h 54mDelta
Deal found 6/13$677
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:00 amONT - FSD
2 stops27h 49mAlaska Airlines
Fri 9/512:19 pmFSD - ONT
2 stops24h 25mAlaska Airlines
Deal found 6/11$891

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 June 13, 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

Tue 8/5

12:59 am-6:54 pm

1 stop15h 55m

Sioux Falls Joe Foss Field

Wed 8/27

3:07 pm-11:50 pm

1 stop10h 43m

$256

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Fri 7/25

5:05 am-12:46 pm

1 stop6h 41m

Rapid City

Mon 7/28

11:16 am-5:25 pm

1 stop7h 09m

$259

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Tue 8/12

8:14 am-4:08 pm

1 stop6h 54m

Rapid City

Tue 8/19

5:39 am-4:24 pm

2 stops11h 45m

$264

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 7/4

11:49 am-11:10 pm

1 stop9h 21m

Sioux Falls Joe Foss Field

Wed 7/9

3:16 pm-11:42 pm

2 stops10h 26m

$329

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 7/11

12:46 pm-10:01 pm

1 stop7h 15m

Sioux Falls Joe Foss Field

Wed 7/16

2:44 pm-6:08 pm

1 stop5h 24m

$332

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 7/4

1:34 pm-11:37 pm

1 stop8h 03m

Sioux Falls Joe Foss Field

Wed 7/9

9:15 am-12:32 pm

1 stop5h 17m

$349

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Thu 11/20

5:51 pm-10:05 am

2 stops15h 14m

Rapid City

Tue 11/25

2:20 pm-11:46 pm

2 stops10h 26m

$677

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Tue 9/2

6:00 am-11:49 am

2 stops27h 49m

Sioux Falls Joe Foss Field

Fri 9/5

12:19 pm-10:44 am

2 stops24h 25m

$891

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Wed 7/2

7:00 am-9:55 pm

1 stop12h 55m

$185

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Wed 7/16

1:34 pm-11:37 pm

1 stop8h 03m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 14 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 June 13, 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.

Rainfall in South Dakota by month

Plan your trip to South Dakota by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in South Dakota ranges from 0.6 - 3.9 inches per month. June is typically the wettest month, when rainfall can reach 3.9 in. January is typically the driest time to visit South Dakota when rainfall is around 0.6 in.

Temperature in South Dakota by month

Plan your trip to South Dakota by taking into account the average temperature totals by month.

If weather is an important factor for your trip to South Dakota, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

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 June 13, 2025.
To help decide which airline to fly from Ontario to South Dakota, see what other customers have to say about Alaska Airlines, Delta and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Frontier
5.9
Fair
3,296 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    $200 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Delta and Frontier, with prices starting from $275 and $292, 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
San Francisco to John F Kennedy Intl flights
San Francisco to Newark flights
Los Angeles to Honolulu flights
Los Angeles to O'Hare Intl flights
Los Angeles to LaGuardia flights
Los Angeles to San Francisco flights
Los Angeles to Dallas/Fort Worth flights
San Francisco to Seattle flights
Ontario to Seattle flights
San Francisco to Las Vegas flights
Los Angeles to Boston flights
San Francisco to O'Hare Intl flights
Los Angeles to Las Vegas flights
San Jose to Los Angeles flights
Ontario to John F Kennedy Intl flights
Santa Ana to Seattle flights
San Jose to Seattle flights
San Francisco to Los Angeles flights
Los Angeles to Miami flights
San Francisco to Honolulu flights
Los Angeles to Orlando flights
Los Angeles to San Jose flights
Los Angeles to Denver flights
San Francisco to LaGuardia flights
Oakland to Santa Ana flights
Los Angeles to Portland flights
Santa Ana to Las Vegas flights
Oakland to Las Vegas flights
Oakland to Los Angeles flights
Los Angeles to Fort Lauderdale flights
San Diego to Seattle flights
Burbank to Las Vegas flights
Ontario to O'Hare Intl flights
Oakland to Seattle flights
Los Angeles to Oakland flights
Burbank to Newark flights
Santa Ana to Newark flights
Los Angeles to Kahului flights
Los Angeles to Reagan-National flights
Ontario to Honolulu flights
Santa Ana to O'Hare Intl flights
San Francisco to Dallas/Fort Worth flights
Los Angeles to Dulles Intl flights
Los Angeles to Hobby flights
San Diego to John F Kennedy Intl flights
San Jose to Las Vegas flights
San Francisco to Denver 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 June 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$285FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$268Average$438FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$284Average$438FlexibilityNo 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.
Site
Privacy Preferences©2025 Cheapflights