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South Dakota

$148+ 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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FSD
Jan 8 — Jan 151
Thu 1/8
Thu 1/15
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 December 9, 2025.

This United Airlines deal was found by Cheapflights users on 12/7. 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 12/3011:59 pmONT - FSD
1 stop8h 53mUnited Airlines
Thu 1/18:50 amFSD - ONT
1 stop5h 48mUnited Airlines
Deal found 12/7$269
This Delta deal was found by Cheapflights users on 12/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:15 amONT - FSD
1 stop8h 52mDelta
Fri 1/94:17 pmFSD - ONT
2 stops8h 21mDelta
Deal found 12/6$275
This Frontier deal was found by Cheapflights users on 12/6. 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.
Mon 12/226:45 amONT - FSD
1 stop11h 10mFrontier
Thu 1/153:56 pmFSD - ONT
1 stop10h 03mFrontier
Deal found 12/6$312
This Delta deal was found by Cheapflights users on 12/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1912:12 pmONT - FSD
1 stop9h 02mDelta
Tue 1/135:00 amFSD - ONT
2 stops9h 16mDelta
Deal found 12/6$344
This Frontier deal was found by Cheapflights users on 12/6. 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.
Mon 12/226:45 amONT - FSD
1 stop11h 10mFrontier
Sun 1/118:26 pmFSD - ONT
1 stop5h 30mFrontier
Deal found 12/6$347
This American Airlines deal was found by Cheapflights users on 12/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:20 amONT - FSD
1 stop6h 26mAmerican Airlines
Tue 1/137:00 amFSD - ONT
1 stop9h 18mAmerican Airlines
Deal found 12/6$350
This Frontier deal was found by Cheapflights users on 12/7. 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.
Mon 12/296:45 amONT - FSD
1 stop11h 10mFrontier
Fri 1/28:50 pmFSD - ONT
1 stop5h 09mFrontier
Deal found 12/7$353
This Frontier deal was found by Cheapflights users on 12/6. 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 12/196:45 amONT - FSD
1 stop11h 10mFrontier
Thu 1/153:56 pmFSD - ONT
1 stop10h 03mFrontier
Deal found 12/6$362
This Kiwi.com deal was found by Cheapflights users on 12/7. 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.
Tue 12/306:17 pmONT - FSD
1 stop15h 33mMultiple Airlines
Fri 1/28:50 pmFSD - ONT
2 stops28h 31mMultiple Airlines
Deal found 12/7$374
This American Airlines deal was found by Cheapflights users on 12/7. 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 12/314:47 pmONT - FSD
1 stop4h 52mAmerican Airlines
Fri 1/23:09 pmFSD - ONT
1 stop5h 19mAmerican Airlines
Deal found 12/7$379
This American Airlines deal was found by Cheapflights users on 12/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:20 amONT - FSD
1 stop6h 26mAmerican Airlines
Fri 1/98:00 amFSD - ONT
1 stop6h 03mAmerican Airlines
Deal found 12/6$380
This Kiwi.com deal was found by Cheapflights users on 12/7. 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.
Wed 12/106:15 amONT - RAP
1 stop12h 20mMultiple Airlines
Fri 12/1210:30 amRAP - ONT
1 stop11h 47mMultiple Airlines
Deal found 12/7$486

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 December 9, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$182
(Frontier)

One-way from

$148
(Frontier)

Popular in

November

Cheapest in

July

Average price

$363
Provider with most accurate pricing for Los Angeles-Sioux Falls Joe Foss Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-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. 17% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 9, 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

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Fri 1/16

1:24 pm-8:32 pm

1 stop6h 08m

Rapid City

Sun 1/18

7:00 am-12:47 pm

1 stop6h 47m

$259

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Mon 1/5

11:59 pm-10:47 am

1 stop8h 48m

Sioux Falls Joe Foss Field

Mon 1/12

5:18 pm-8:58 pm

1 stop5h 40m

$269

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 12/25

11:15 am-10:07 pm

1 stop8h 52m

Sioux Falls Joe Foss Field

Tue 1/13

4:17 pm-10:38 pm

2 stops8h 21m

$275

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 12/25

11:15 am-10:07 pm

1 stop8h 52m

Sioux Falls Joe Foss Field

Fri 1/9

4:17 pm-10:38 pm

2 stops8h 21m

$275

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Fri 2/6

1:24 pm-7:14 pm

1 stop4h 50m

Rapid City

Sun 2/8

2:40 pm-8:58 pm

1 stop7h 18m

$339

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Fri 3/6

5:15 am-11:05 am

1 stop4h 50m

Rapid City

Sun 3/8

2:45 pm-8:57 pm

1 stop7h 12m

$339

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Fri 12/19

12:12 pm-11:14 pm

1 stop9h 02m

Sioux Falls Joe Foss Field

Tue 1/13

5:00 am-12:16 pm

2 stops9h 16m

$344

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Mon 12/22

6:45 am-7:55 pm

1 stop11h 10m

Sioux Falls Joe Foss Field

Sun 1/11

8:26 pm-11:56 pm

1 stop5h 30m

$347

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Tue 3/31

1:34 pm-8:35 pm

1 stop5h 01m

Sioux Falls Joe Foss Field

Sat 4/4

5:10 pm-8:46 pm

1 stop5h 36m

$349

OntarioSioux Falls

ONT - FSD

ONTFSD

Ontario

Thu 3/26

1:50 pm-8:44 pm

1 stop4h 54m

Sioux Falls Joe Foss Field

Mon 3/30

5:10 pm-8:46 pm

1 stop5h 36m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 27 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, December is the cheapest month in which you can book a flight from Ontario to South Dakota (average of $98). 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.

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 December 9, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to South Dakota in the afternoon. If you’re flexible enough to do this you can expect to save up to 47% on your trip compared to booking a flight in the morning.

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 December 9, 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
9,088 reviews

Crew

8.1

Entertainment

7.1

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,088 reviews
United Airlines
7.4
Good
9,088 reviews

Crew

8.1

Entertainment

7.1

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
11,043 reviews
United Airlines
7.4
Good
9,088 reviews

Crew

8.1

Entertainment

7.1

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Frontier
5.8
Fair
3,085 reviews
United Airlines
7.4
Good
9,088 reviews

Crew

8.1

Entertainment

7.1

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 6h 08m. Your travel time can differ by up to 2h 44m. There are 1038 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, December is the cheapest month in which you can book a flight from Ontario to South Dakota (average of $98). 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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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 December 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$230FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$258Average$447FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$418FlexibilityNo cancel feeOn-time69%

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