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South Dakota

$117+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FSD
abr. 4 — abr. 111
sáb. 4/4
sáb. 4/11
1 adult, Economy
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Cheap 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 marzo 5, 2026.

This Delta deal was found by Cheapflights users on 3/2. 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. 4/26:15 am
ORD
-
FSD
1 stop6h 38m
Delta
sáb. 4/41:34 pm
FSD
-
ORD
1 stop4h 19m
Delta
Deal found 3/2$177
This Delta deal was found by Cheapflights users on 3/2. 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. 4/37:20 pm
MDW
-
FSD
1 stop3h 44m
Delta
sáb. 4/41:34 pm
FSD
-
MDW
1 stop5h 06m
Delta
Deal found 3/2$177
This United Airlines deal was found by Cheapflights users on 3/2. 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. 4/39:50 pm
ORD
-
FSD
Nonstop1h 54m
United Airlines
dom. 4/57:39 am
FSD
-
ORD
Nonstop1h 42m
United Airlines
Deal found 3/2$189
This Delta deal was found by Cheapflights users on 2/28. 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. 3/277:20 pm
MDW
-
FSD
1 stop3h 44m
Delta
dom. 3/295:00 am
FSD
-
MDW
1 stop3h 50m
Delta
Deal found 2/28$193
This Delta deal was found by Cheapflights users on 3/2. 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. 4/37:20 pm
MDW
-
FSD
1 stop3h 44m
Delta
dom. 4/55:00 am
FSD
-
MDW
1 stop3h 50m
Delta
Deal found 3/2$197
This Delta deal was found by Cheapflights users on 3/4. 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. 4/185:04 pm
ORD
-
FSD
2 stops5h 58m
Delta
sáb. 4/251:44 pm
FSD
-
ORD
1 stop4h 27m
Delta
Deal found 3/4$202
This American Airlines deal was found by Cheapflights users on 2/28. 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. 3/199:47 am
ORD
-
FSD
Nonstop1h 51m
American Airlines
dom. 3/2212:14 pm
FSD
-
ORD
Nonstop1h 48m
American Airlines
Deal found 2/28$204
This Delta deal was found by Cheapflights users on 3/4. 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. 5/25:04 pm
ORD
-
FSD
2 stops5h 58m
Delta
mar. 5/58:05 am
FSD
-
ORD
2 stops10h 47m
Delta
Deal found 3/4$207
This American Airlines deal was found by Cheapflights users on 3/2. 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. 4/169:45 am
ORD
-
RAP
Nonstop2h 38m
American Airlines
jue. 4/2311:53 am
RAP
-
ORD
Nonstop2h 27m
American Airlines
Deal found 3/2$208
This United Airlines deal was found by Cheapflights users on 3/4. 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. 3/268:10 pm
ORD
-
FSD
Nonstop1h 52m
United Airlines
dom. 3/296:35 pm
FSD
-
ORD
Nonstop1h 57m
United Airlines
Deal found 3/4$209
This United Airlines deal was found by Cheapflights users on 3/2. 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. 4/169:06 am
ORD
-
RAP
Nonstop2h 30m
United Airlines
lun. 4/209:20 am
RAP
-
ORD
Nonstop2h 25m
United Airlines
Deal found 3/2$209
This American Airlines deal was found by Cheapflights users on 3/1. 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.
mar. 3/179:47 am
ORD
-
FSD
Nonstop1h 51m
American Airlines
sáb. 3/2112:14 pm
FSD
-
ORD
Nonstop1h 48m
American Airlines
Deal found 3/1$219

Find 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 marzo 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(Delta)

One-way from

$117
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$249

Good round-trip deal

$220 or less

Good one-way deal

$173 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
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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.
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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 marzo 5, 2026.
Use the filters below to find and compare flights from Illinois to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

jue. 4/2

6:15 am-10:21 am

1 stop4h 06m

Sioux Falls Joe Foss Field

sáb. 4/4

1:34 pm-5:53 pm

1 stop4h 19m

$197

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

vie. 4/3

9:50 pm-11:44 pm

Nonstop1h 54m

Sioux Falls Joe Foss Field

vie. 4/10

6:53 pm-8:50 pm

Nonstop1h 57m

$209

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

vie. 4/3

7:00 pm-10:25 pm

1 stop4h 25m

Rapid City

dom. 4/5

4:01 pm-9:26 pm

1 stop4h 25m

$229

ChicagoRapid City

MDW - RAP

MDWRAP

Chicago Midway

vie. 3/27

7:20 pm-10:25 pm

1 stop4h 05m

Rapid City

dom. 4/5

11:03 am-6:40 pm

1 stop6h 37m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

mié. 7/22

5:00 am-9:20 am

1 stop5h 20m

Rapid City

mié. 7/29

1:35 pm-4:59 pm

Nonstop2h 24m

$239

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

jue. 4/9

6:15 am-12:53 pm

1 stop6h 38m

Sioux Falls Joe Foss Field

dom. 4/12

1:34 pm-7:44 pm

1 stop6h 10m

$248

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

jue. 5/21

6:24 am-12:49 pm

1 stop6h 25m

Sioux Falls Joe Foss Field

sáb. 5/30

9:15 am-2:57 pm

1 stop5h 42m

$248

St. LouisSioux Falls

STL - FSD

STLFSD

Lambert-St Louis

sáb. 4/18

4:30 pm-11:11 pm

1 stop6h 41m

Sioux Falls Joe Foss Field

vie. 4/24

7:39 pm-11:46 pm

1 stop4h 07m

$249

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

vie. 4/3

3:45 pm-5:44 pm

Nonstop1h 59m

Sioux Falls Joe Foss Field

lun. 4/6

7:39 am-9:21 am

Nonstop1h 42m

$249

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

mié. 8/26

8:00 pm-9:52 pm

Nonstop1h 52m

Sioux Falls Joe Foss Field

sáb. 8/29

7:40 am-9:31 am

Nonstop1h 51m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/4

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Illinois to South Dakota (average of $189). Flying from Illinois to South Dakota in April is currently the most expensive (average of $213). 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 marzo 5, 2026.

One of the essential ways to save on airfare from Illinois to South Dakota is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 36% on airfare.

What is the cheapest day to fly from Illinois to South Dakota?

Use this chart to determine the cheapest time to fly round-trip from Illinois to South Dakota. Price data was last updated on February 21, 2026.

Travelers seeking maximum savings on their Illinois to South Dakota flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 marzo 5, 2026.
Read reviews from past customers who have flown Denver Air Connection, Delta, and United Airlines from Illinois to South Dakota. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Denver Air Connection
8.1
Very good

Comfort

8.6

Entertainment

7.6

Crew

9.1

Food

8.2

Overall

8.1

Boarding

8.2
Denver Air Connection
8.1
Very good
Denver Air Connection
8.1
Very good

Comfort

8.6

Entertainment

7.6

Crew

9.1

Food

8.2

Overall

8.1

Boarding

8.2
Delta
7.9
Good
8,247 reviews
Denver Air Connection
8.1
Very good

Comfort

8.6

Entertainment

7.6

Crew

9.1

Food

8.2

Overall

8.1

Boarding

8.2
United Airlines
7.4
Good
9,389 reviews
Denver Air Connection
8.1
Very good

Comfort

8.6

Entertainment

7.6

Crew

9.1

Food

8.2

Overall

8.1

Boarding

8.2
American Airlines
7.2
Good
11,381 reviews
Denver Air Connection
8.1
Very good

Comfort

8.6

Entertainment

7.6

Crew

9.1

Food

8.2

Overall

8.1

Boarding

8.2

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.

  • How long is the flight from Illinois to South Dakota?

    Delta, United Airlines, and American Airlines can get you from Illinois to South Dakota in just under 1h 51m. Your travel time can differ by up to 4h 47m. There are 461 mi between Illinois and South Dakota. This flight may include one or multiple stops.

  • 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, February is the cheapest month in which you can book a flight from Illinois to South Dakota (average of $189). Flying from Illinois to South Dakota in April is currently the most expensive (average of $213). 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 Illinois to South Dakota

See prices for flight routes from nearby airports that may be better suited for you.
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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 marzo 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
Denver Air ConnectionCheapest$164Average$182FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$189Average$323FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$194Average$375FlexibilityNo cancel feeOn-time69%
DeltaCheapest$228Average$298FlexibilityNo cancel feeOn-timeN/A

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