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$82+ Cheap flights from South Dakota to Ontario (ONT)

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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from South Dakota to Ontario

Keep the following information in mind while searching for South Dakota to Ontario flight deals. Data was last updated August 14, 2025.

Round-trip from

$206
(FlightHub)

One-way from

$82
(Frontier)

Popular in

November

Cheapest in

July

Average price

$268
From South Dakota to Ontario
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One-way flight from South Dakota to Ontario
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Highest demand for flights based on searches. 15% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from South Dakota to Ontario

Cheapest flights from South Dakota to Ontario
Explore the most affordable flight options available from South Dakota to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This FlightHub deal was found by Cheapflights users on 8/14. 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.
Fri 10/247:28 pmFSD - ONT
1 stop6h 22mFrontier
Mon 10/276:53 amONT - FSD
1 stop9h 40mFrontier
Deal found 8/14$206
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/812:43 pmFSD - ONT
1 stop10h 13mMultiple Airlines
Thu 9/117:30 pmONT - FSD
1 stop13h 53mMultiple Airlines
Deal found 8/12$245
This FlightHub deal was found by Cheapflights users on 8/12. 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.
Thu 10/163:19 pmFSD - ONT
1 stop10h 31mFrontier
Sun 10/196:53 amONT - FSD
1 stop4h 45mFrontier
Deal found 8/12$253
This FlightHub deal was found by Cheapflights users on 8/12. 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.
Thu 8/142:57 pmFSD - ONT
1 stop10h 53mFrontier
Sun 8/1712:59 amONT - FSD
1 stop15h 38mFrontier
Deal found 8/12$263
This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/91:19 pmFSD - ONT
1 stop7h 35mAmerican Airlines
Tue 9/166:10 amONT - FSD
1 stop6h 05mAmerican Airlines
Deal found 8/12$269
This FlightHub deal was found by Cheapflights users on 8/12. 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.
Fri 8/157:32 pmFSD - ONT
1 stop15h 37mFrontier
Thu 8/2112:59 amONT - FSD
1 stop10h 24mFrontier
Deal found 8/12$273
This FlightHub deal was found by Cheapflights users on 8/12. 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.
Fri 10/32:54 pmFSD - ONT
1 stop7h 00mFrontier
Sun 10/126:53 amONT - FSD
1 stop4h 45mFrontier
Deal found 8/12$276
This Frontier deal was found by Cheapflights users on 8/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:09 pmFSD - ONT
1 stop11h 41mFrontier
Sat 11/1512:59 amONT - FSD
1 stop10h 25mFrontier
Deal found 8/11$277
This Delta deal was found by Cheapflights users on 8/13. 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.
Tue 10/75:20 amFSD - ONT
2 stops13h 50mDelta
Tue 10/141:15 pmONT - FSD
2 stops7h 42mDelta
Deal found 8/13$279
This United Airlines deal was found by Cheapflights users on 8/14. 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 9/103:19 pmRAP - ONT
1 stop6h 24mUnited Airlines
Wed 9/171:15 pmONT - RAP
1 stop6h 24mUnited Airlines
Deal found 8/14$339
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/278:32 amRAP - ONT
1 stop5h 00mUnited Airlines
Tue 2/31:00 pmONT - RAP
1 stop4h 53mUnited Airlines
Deal found 8/13$354
This United Airlines deal was found by Cheapflights users on 8/14. 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 8/2212:43 pmRAP - ONT
1 stop5h 46mUnited Airlines
Sun 8/241:15 pmONT - RAP
1 stop4h 35mUnited Airlines
Deal found 8/14$369

Cheapflights Fare Finder

 
Customize your flight search to find flights from South Dakota to Ontario 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 August 14, 2025.
Use the filters below to find and compare flights from South Dakota to Ontario that are best for you.

Fly from

South Dakota

Fly to

Ontario

Route

Depart

Return

Price

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 9/8

12:43 pm-8:56 pm

1 stop10h 13m

Ontario

Thu 9/11

7:30 pm-11:23 am

1 stop13h 53m

$245

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Thu 10/16

3:19 pm-11:50 pm

1 stop10h 31m

Ontario

Sun 10/19

6:53 am-1:38 pm

1 stop4h 45m

$253

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 9/9

1:19 pm-6:54 pm

1 stop7h 35m

Ontario

Tue 9/16

6:10 am-2:15 pm

1 stop6h 05m

$269

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 10/7

8:16 am-12:01 pm

1 stop5h 45m

Ontario

Tue 10/14

6:15 am-2:14 pm

1 stop5h 59m

$269

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Fri 10/3

2:54 pm-7:54 pm

1 stop7h 00m

Ontario

Sun 10/12

6:53 am-1:38 pm

1 stop4h 45m

$276

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Tue 10/7

5:20 am-5:10 pm

2 stops13h 50m

Ontario

Tue 10/14

1:15 pm-10:57 pm

2 stops7h 42m

$279

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Mon 9/8

2:54 pm-7:54 pm

1 stop7h 00m

Ontario

Fri 9/12

10:40 pm-2:09 pm

2 stops37h 29m

$280

Sioux FallsOntario

FSD - ONT

FSDONT

Sioux Falls Joe Foss Field

Fri 10/24

7:28 pm-11:50 pm

1 stop6h 22m

Ontario

Thu 10/30

12:59 am-1:24 pm

1 stop10h 25m

$299

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Wed 9/10

3:19 pm-8:43 pm

1 stop6h 24m

Ontario

Wed 9/17

1:15 pm-8:39 pm

1 stop6h 24m

$339

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Wed 8/27

8:32 am-12:32 pm

1 stop5h 00m

Ontario

Tue 2/3

1:00 pm-6:53 pm

1 stop4h 53m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 29 results
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Best time to book a flight from South Dakota to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from South Dakota 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 South Dakota to Ontario

What is the cheapest month to book a flight from South Dakota to Ontario?

Currently, August is the cheapest month in which you can book a flight from South Dakota to Ontario (average of $246). Flying from South Dakota to Ontario in March is currently the most expensive (average of $328). 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 SD to ONT?

Find hourly flight availability from South Dakota to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from South Dakota to Ontario as you normally would.

Related info for your journey

Find useful and relevant information for your journey from South Dakota to Ontario. 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 into for flights to Ontario from South Dakota?

    For a flight from South Dakota to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

  • What are the most popular routes from South Dakota to Ontario?

    When deciding which route to take from South Dakota to Ontario consider Sioux Falls Joe Foss Field - Ontario, Rapid City - Ontario or Aberdeen - Ontario as they are the most popular.

  • Can I find deals for flights from South Dakota to Ontario that include hotel bookings?

    Yes. In addition to deals on South Dakota to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from South Dakota to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from South Dakota to Ontario.

  • Can I find deals for business class flights from South Dakota to Ontario?

    Yes. Cheapflights offers flight deals from South Dakota to Ontario 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 South Dakota to Ontario?

    Currently, August is the cheapest month in which you can book a flight from South Dakota to Ontario (average of $246). Flying from South Dakota to Ontario in March is currently the most expensive (average of $328). 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 South Dakota to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from South Dakota to Ontario

Discover the top 2 airlines that operate flights from South Dakota to Ontario. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$273Average$383FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$283Average$399FlexibilityNo cancel feeOn-time69%

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