HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
South Dakota

$96+ Cheap flights from Illinois 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FSD
abr. 22 — abr. 291
mar. 4/22
mar. 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois 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 Illinois to South Dakota

Keep the following information in mind while searching for Illinois to South Dakota flight deals. Data was last updated abril 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$189
(United Airlines)

One-way from

$96
(Mytrip)

Popular in

January

Cheapest in

October

Average price

$334

Good round-trip deal

$249 or less

Good one-way deal

$121 or less
Provider with most accurate pricing for Chicago (CHI)-Sioux Falls Joe Foss Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Sioux Falls Joe Foss Field flights.
Search Deals
From Illinois to South Dakota
Search Deals
One-way flight from Illinois to South Dakota
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from Illinois to South Dakota.
Search Deals
Price to beat on a one-way flight from Illinois to South Dakota.
Search Deals

Find flight deals from Illinois to South Dakota

Cheapest flights from Illinois to South Dakota
Explore the most affordable flight options available from Illinois to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.

This United Airlines deal was found by Cheapflights users on 4/17. 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.
sáb. 5/108:25 pmORD - FSD
Nonstop1h 52mUnited Airlines
dom. 5/118:00 amFSD - ORD
Nonstop1h 45mUnited Airlines
Deal found 4/17$189
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/1011:03 amORD - FSD
1 stop4h 33mDelta
dom. 5/115:00 amFSD - ORD
1 stop3h 24mDelta
Deal found 4/17$209
This American Airlines deal was found by Cheapflights users on 4/17. 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.
dom. 9/2110:09 amORD - RAP
Nonstop2h 21mAmerican Airlines
sáb. 9/275:57 pmRAP - ORD
Nonstop2h 16mAmerican Airlines
Deal found 4/17$209
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/106:30 pmMDW - FSD
1 stop4h 27mDelta
dom. 5/115:00 amFSD - MDW
1 stop3h 36mDelta
Deal found 4/17$209
This United Airlines deal was found by Cheapflights users on 4/17. 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.
dom. 9/219:00 amORD - RAP
Nonstop2h 34mUnited Airlines
sáb. 9/278:32 amRAP - ORD
1 stop5h 23mUnited Airlines
Deal found 4/17$219
This Frontier deal was found by Cheapflights users on 4/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/66:00 amORD - FSD
1 stop8h 58mFrontier
dom. 6/83:58 pmFSD - ORD
1 stop8h 01mFrontier
Deal found 4/17$220
This Delta deal was found by Cheapflights users on 4/16. 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.
jue. 5/156:05 pmSTL - FSD
1 stop4h 52mDelta
lun. 5/197:59 pmFSD - STL
1 stop3h 27mDelta
Deal found 4/16$229
This American Airlines deal was found by Cheapflights users on 4/17. 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.
sáb. 8/234:19 pmSTL - RAP
1 stop4h 51mAmerican Airlines
mar. 9/212:47 pmRAP - STL
1 stop6h 36mAmerican Airlines
Deal found 4/17$249
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/209:02 pmORD - FSD
1 stop15h 55mMultiple Airlines
lun. 5/269:58 pmFSD - ORD
1 stop13h 38mMultiple Airlines
Deal found 4/16$257
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/26:00 amSTL - RAP
1 stop6h 05mDelta
mar. 5/611:45 amRAP - STL
1 stop4h 07mDelta
Deal found 4/17$259
This United Airlines deal was found by Cheapflights users on 4/17. 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. 7/234:45 pmSTL - RAP
1 stop6h 15mUnited Airlines
mié. 7/3011:16 amRAP - STL
1 stop4h 15mUnited Airlines
Deal found 4/17$267
This United Airlines deal was found by Cheapflights users on 4/17. 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.
vie. 5/25:29 pmSTL - FSD
1 stop4h 43mUnited Airlines
mar. 5/68:00 amFSD - STL
1 stop6h 47mUnited Airlines
Deal found 4/17$309

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois 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 abril 17, 2025.
Use the filters below to find and compare flights from Illinois to South Dakota that are best for you.

Fly from

Illinois

Fly to

South Dakota

Route

Depart

Return

Price

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

sáb. 5/10

8:25 pm-10:17 pm

Nonstop1h 52m

Sioux Falls Joe Foss Field

dom. 5/11

8:00 am-9:45 am

Nonstop1h 45m

$189

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

sáb. 5/10

11:03 am-3:36 pm

1 stop4h 33m

Sioux Falls Joe Foss Field

dom. 5/11

5:00 am-8:24 am

1 stop3h 24m

$209

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

dom. 9/21

10:09 am-11:30 am

Nonstop2h 21m

Rapid City

sáb. 9/27

5:57 pm-9:13 pm

Nonstop2h 16m

$209

ChicagoSioux Falls

MDW - FSD

MDWFSD

Chicago Midway

sáb. 5/10

6:30 pm-10:57 pm

1 stop4h 27m

Sioux Falls Joe Foss Field

dom. 5/11

5:00 am-8:36 am

1 stop3h 36m

$209

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

dom. 9/21

9:00 am-10:34 am

Nonstop2h 34m

Rapid City

sáb. 9/27

8:32 am-2:55 pm

1 stop5h 23m

$219

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

vie. 6/6

6:00 am-2:58 pm

1 stop8h 58m

Sioux Falls Joe Foss Field

dom. 6/8

3:58 pm-11:59 pm

1 stop8h 01m

$220

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

jue. 5/15

6:05 pm-10:57 pm

1 stop4h 52m

Sioux Falls Joe Foss Field

lun. 5/19

7:59 pm-11:26 pm

1 stop3h 27m

$229

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

mar. 5/20

12:41 pm-12:57 pm

2 stops24h 16m

Sioux Falls Joe Foss Field

lun. 5/26

9:58 pm-11:36 am

1 stop13h 38m

$257

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

vie. 5/2

6:00 am-11:05 am

1 stop6h 05m

Rapid City

mar. 5/6

11:45 am-4:52 pm

1 stop4h 07m

$259

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

sáb. 4/26

3:44 pm-8:20 pm

1 stop5h 36m

Rapid City

sáb. 5/3

12:26 pm-7:29 pm

1 stop6h 03m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 44 results
1
2
3
...
5

Best time to book a flight from Illinois to South Dakota

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

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

Currently, September is the cheapest month in which you can book a flight from Illinois to South Dakota (average of $334). Flying from Illinois 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 IL to SD?

Find hourly flight availability from Illinois 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 abril 17, 2025.

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

Weekly flight availability from Illinois to South Dakota

Explore weekly flight availability from Illinois to South Dakota. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated abril 17, 2025.

The most flights from USIL to USSD are scheduled on a Tuesday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

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 abril 17, 2025.
Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Illinois to South Dakota. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Frontier
6.0
Okay
3,281 reviews
Delta
8.0
Very good
7,916 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 are the cheapest airlines to fly from Illinois to South Dakota one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $96. Delta flights start at $109 while deals on United Airlines start at $126 one-way.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Illinois to South Dakota (average of $334). Flying from Illinois 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 Illinois to South Dakota

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Fort Lauderdale flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Los Angeles flights
Newark to Orlando flights
John F Kennedy Intl to Miami flights
Newark to Los Angeles flights
LaGuardia to Miami flights
Newark to Miami flights
San Francisco to John F Kennedy Intl flights
Los Angeles to John F Kennedy Intl flights
John F Kennedy Intl to Dallas/Fort Worth flights
John F Kennedy Intl to Fort Lauderdale flights
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to John F Kennedy Intl flights
Dallas/Fort Worth to Seattle flights
John F Kennedy Intl to Las Vegas flights
O'Hare Intl to Las Vegas flights
Newark to Las Vegas flights
John F Kennedy Intl to San Francisco flights
LaGuardia to Orlando flights
John F Kennedy Intl to O'Hare Intl flights
Los Angeles to Newark flights
LaGuardia to Dallas/Fort Worth flights
LaGuardia to O'Hare Intl flights
John F Kennedy Intl to Orlando flights
LaGuardia to Atlanta flights
Los Angeles to Boston flights
Dallas/Fort Worth to O'Hare Intl flights
Los Angeles to Honolulu flights
Newark to O'Hare Intl flights
Newark to Seattle flights
O'Hare Intl to Dallas/Fort Worth flights
O'Hare Intl to LaGuardia flights
Dallas/Fort Worth to Las Vegas flights
San Francisco to Newark flights
John F Kennedy Intl to Seattle flights
Newark to Tampa flights
Dallas/Fort Worth to Newark flights
O'Hare Intl to John F Kennedy Intl flights
Los Angeles to Seattle flights
John F Kennedy Intl to West Palm Beach flights
Newark to Dallas/Fort Worth flights
Seattle to Newark flights
Seattle to Los Angeles flights
Los Angeles to LaGuardia flights
LaGuardia to Los Angeles flights
Newark to San Francisco flights
Seattle to Las Vegas flights
Fort Lauderdale to Newark flights
LaGuardia to Hobby flights

Top 4 airlines flying from Illinois to South Dakota

Discover the top 4 airlines that operate flights from Illinois 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 abril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Denver Air ConnectionCheapest$151Average$160FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$179Average$301FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$199Average$341FlexibilityNo cancel feeOn-time69%
DeltaCheapest$218Average$402FlexibilityNo cancel feeOn-timeN/A

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.