HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
South Dakota

$54+ 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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FSD
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
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 febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$108
(Frontier)

One-way from

$54
(Frontier)

Popular in

January

Cheapest in

October

Average price

$315

Good round-trip deal

$189 or less

Good one-way deal

$162 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. 10% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 febrero 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/20. 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.
vie. 3/142:00 pmORD - FSD
Nonstop1h 46mAmerican Airlines
dom. 3/165:15 amFSD - ORD
Nonstop1h 37mAmerican Airlines
Deal found 2/20$189
This United Airlines deal was found by Cheapflights users on 2/20. 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.
jue. 4/108:20 pmORD - FSD
Nonstop1h 52mUnited Airlines
dom. 4/136:30 pmFSD - ORD
Nonstop1h 55mUnited Airlines
Deal found 2/20$190
This Delta deal was found by Cheapflights users on 2/19. 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. 3/136:15 amORD - FSD
1 stop3h 56mDelta
sáb. 3/1512:30 pmFSD - ORD
1 stop4h 58mDelta
Deal found 2/19$209
This American Airlines deal was found by Cheapflights users on 2/20. 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.
mié. 8/611:40 amORD - RAP
Nonstop2h 19mAmerican Airlines
lun. 8/116:02 pmRAP - ORD
Nonstop2h 13mAmerican Airlines
Deal found 2/20$209
This Delta deal was found by Cheapflights users on 2/20. 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. 3/131:16 pmMDW - FSD
1 stop4h 50mDelta
dom. 3/165:19 amFSD - MDW
1 stop4h 26mDelta
Deal found 2/20$209
This Delta deal was found by Cheapflights users on 2/20. 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. 3/2210:20 amORD - RAP
1 stop6h 16mDelta
sáb. 3/2911:45 amRAP - ORD
1 stop4h 43mDelta
Deal found 2/20$229
This Delta deal was found by Cheapflights users on 2/18. 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.
mar. 3/2510:25 amMDW - RAP
1 stop6h 11mDelta
mar. 4/111:45 amRAP - MDW
1 stop5h 33mDelta
Deal found 2/18$229
This Delta deal was found by Cheapflights users on 2/20. 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. 3/86:00 amSTL - FSD
1 stop6h 34mDelta
mié. 3/126:59 pmFSD - STL
1 stop4h 04mDelta
Deal found 2/20$239
This United Airlines deal was found by Cheapflights users on 2/20. 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. 6/285:00 amORD - RAP
1 stop5h 04mUnited Airlines
sáb. 7/55:30 amRAP - ORD
1 stop4h 50mUnited Airlines
Deal found 2/20$248
This Delta deal was found by Cheapflights users on 2/18. 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. 4/411:19 amSTL - RAP
1 stop5h 16mDelta
mar. 4/811:45 amRAP - STL
1 stop4h 04mDelta
Deal found 2/18$249
This American Airlines deal was found by Cheapflights users on 2/20. 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.
jue. 2/2011:57 amSTL - FSD
1 stop3h 32mAmerican Airlines
sáb. 3/155:02 pmFSD - STL
1 stop5h 09mAmerican Airlines
Deal found 2/20$264
This American Airlines deal was found by Cheapflights users on 2/19. 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.
jue. 2/2711:31 amMLI - FSD
1 stop3h 58mAmerican Airlines
dom. 3/24:01 pmFSD - MLI
1 stop5h 59mAmerican Airlines
Deal found 2/19$279

Find flights from Illinois to South Dakota within your budget

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 febrero 20, 2025.

Fly from

Illinois

Fly to

South Dakota

Route

Depart

Return

Price

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

vie. 3/14

2:00 pm-3:46 pm

Nonstop1h 46m

Sioux Falls Joe Foss Field

dom. 3/16

5:15 am-6:52 am

Nonstop1h 37m

$189

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

jue. 4/10

8:20 pm-10:12 pm

Nonstop1h 52m

Sioux Falls Joe Foss Field

dom. 4/13

6:30 pm-8:25 pm

Nonstop1h 55m

$190

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

jue. 3/13

6:15 am-10:11 am

1 stop3h 56m

Sioux Falls Joe Foss Field

sáb. 3/15

12:30 pm-5:28 pm

1 stop4h 58m

$209

ChicagoSioux Falls

MDW - FSD

MDWFSD

Chicago Midway

jue. 3/13

1:16 pm-6:06 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

dom. 3/16

5:19 am-9:45 am

1 stop4h 26m

$209

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

sáb. 3/22

10:20 am-3:36 pm

1 stop6h 16m

Rapid City

sáb. 3/29

11:45 am-5:28 pm

1 stop4h 43m

$229

ChicagoRapid City

MDW - RAP

MDWRAP

Chicago Midway

mar. 3/25

10:25 am-3:36 pm

1 stop6h 11m

Rapid City

mar. 4/1

11:45 am-6:18 pm

1 stop5h 33m

$229

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

sáb. 3/8

6:00 am-12:34 pm

1 stop6h 34m

Sioux Falls Joe Foss Field

mié. 3/12

6:59 pm-11:03 pm

1 stop4h 04m

$239

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

vie. 4/4

11:19 am-3:35 pm

1 stop5h 16m

Rapid City

mar. 4/8

11:45 am-4:49 pm

1 stop4h 04m

$249

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

jue. 4/3

9:15 am-10:52 am

Nonstop2h 37m

Rapid City

lun. 4/7

1:00 pm-4:28 pm

Nonstop2h 28m

$254

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

vie. 2/28

5:45 am-11:49 am

1 stop6h 04m

Sioux Falls Joe Foss Field

lun. 3/3

5:41 pm-10:43 pm

1 stop5h 02m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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.

Travel insights for flights from Illinois to South Dakota

Get recent, data-driven insights about flights from Illinois to South Dakota including ideal travel times, pricing trends, and more.

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 febrero 20, 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 febrero 20, 2025.

The most flights from USIL to USSD are scheduled on a Wednesday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 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 febrero 20, 2025.
Read reviews from past customers who have flown Delta, United Airlines and Allegiant Air 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
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

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
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

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
8,765 reviews
Delta
8.0
Very good
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

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

Allegiant Air
7.3
Good
765 reviews
Delta
8.0
Very good
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

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
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

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
3,355 reviews
Delta
8.0
Very good
8,219 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

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 $54. Delta flights start at $175 while deals on Allegiant Air start at $208 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.
John F Kennedy Intl to Miami flights
Newark to Fort Lauderdale flights
Newark to Miami flights
LaGuardia to Fort Lauderdale flights
LaGuardia to Miami flights
John F Kennedy Intl to Fort Lauderdale flights
John F Kennedy Intl to Los Angeles flights
Newark to Orlando flights
Los Angeles to John F Kennedy Intl flights
John F Kennedy Intl to Las Vegas flights
Newark to Los Angeles flights
John F Kennedy Intl to Orlando flights
Los Angeles to Newark flights
John F Kennedy Intl to West Palm Beach flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Dallas/Fort Worth flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Las Vegas flights
John F Kennedy Intl to O'Hare Intl flights
Dallas/Fort Worth to LaGuardia flights
LaGuardia to Orlando flights
Dallas/Fort Worth to Seattle flights
San Francisco to John F Kennedy Intl flights
Dallas/Fort Worth to Las Vegas flights
Newark to Las Vegas flights
Newark to Tampa flights
Boston to Fort Lauderdale flights
Seattle to Los Angeles flights
Newark to Dallas/Fort Worth flights
Dallas/Fort Worth to Orlando flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Miami flights
Seattle to Sky Harbor Intl flights
O'Hare Intl to Sky Harbor Intl flights
Dallas/Fort Worth to John F Kennedy Intl flights
John F Kennedy Intl to San Francisco flights
LaGuardia to Tampa flights
John F Kennedy Intl to Sky Harbor Intl flights
John F Kennedy Intl to Tampa flights
Reagan-National to Miami flights
Minneapolis to Sky Harbor Intl flights
Dulles Intl to Orlando flights
Seattle to Las Vegas flights
Minneapolis to Las Vegas flights
Los Angeles to Seattle flights
John F Kennedy Intl to Atlanta flights
Dallas/Fort Worth to Newark flights
San Francisco to Newark flights
Dulles Intl to Dallas/Fort Worth flights
Boston to Miami 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Denver Air ConnectionCheapest$151Average$155FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$179Average$475FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$199Average$355FlexibilityNo cancel feeOn-time69%
DeltaCheapest$218Average$404FlexibilityNo 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.