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South Dakota

$84+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FSD
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Illinois to South Dakota

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to South Dakota (USSD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 21, 2024.

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 November 21, 2024.

This American Airlines deal was found by Cheapflights users on 11/21. 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.
Sat 12/141:30 pmORD - FSD
Nonstop1h 37mAmerican Airlines
Sat 12/2112:07 pmFSD - ORD
Nonstop2h 03mAmerican Airlines
Deal found 11/21$189
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Sat 12/148:05 amORD - RAP
1 stop8h 49mAmerican Airlines
Tue 12/175:26 amRAP - ORD
1 stop6h 48mAmerican Airlines
Deal found 11/20$196
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Fri 12/67:40 pmORD - FSD
Nonstop1h 50mUnited Airlines
Tue 12/108:00 amFSD - ORD
Nonstop1h 52mUnited Airlines
Deal found 11/20$199
This Delta deal was found by Cheapflights users on 11/20. 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.
Thu 12/126:20 amORD - FSD
1 stop4h 01mDelta
Sun 12/154:18 pmFSD - ORD
1 stop6h 07mDelta
Deal found 11/20$209
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Thu 12/197:35 pmORD - RAP
Nonstop2h 49mUnited Airlines
Thu 12/266:05 amRAP - ORD
Nonstop2h 34mUnited Airlines
Deal found 11/20$209
This Delta deal was found by Cheapflights users on 11/20. 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.
Fri 12/67:14 pmMDW - FSD
1 stop4h 04mDelta
Tue 12/105:00 amFSD - MDW
1 stop3h 50mDelta
Deal found 11/20$218
This Delta deal was found by Cheapflights users on 11/20. 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.
Sat 12/141:45 pmORD - RAP
2 stops10h 14mDelta
Tue 12/1711:49 amRAP - ORD
1 stop6h 56mDelta
Deal found 11/20$227
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Thu 11/214:03 pmSTL - FSD
1 stop5h 45mAmerican Airlines
Thu 11/285:30 amFSD - STL
1 stop3h 59mAmerican Airlines
Deal found 11/20$278
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/45:46 pmMLI - FSD
1 stop3h 44mUnited Airlines
Sat 12/71:50 pmFSD - MLI
1 stop7h 10mUnited Airlines
Deal found 11/20$298
This Mytrip deal was found by Cheapflights users on 11/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/47:33 amORD - FSD
3 stops28h 25mMultiple Airlines
Sat 12/71:08 pmFSD - ORD
2 stops16h 22mMultiple Airlines
Deal found 11/20$398
This United deal was found by Cheapflights users on 11/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/214:43 pmSTL - RAP
1 stop6h 32mUnited Airlines
Wed 1/15:15 amRAP - STL
2 stops9h 32mUnited Airlines
Deal found 11/20$399
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Thu 12/56:34 pmMLI - FSD
1 stop4h 09mAmerican Airlines
Sun 12/83:57 pmFSD - MLI
1 stop5h 59mAmerican Airlines
Deal found 11/20$403

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 2,629,791 searches. Data last updated November 21, 2024.

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Fly to

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Route

Depart

Return

Price

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

Sat 12/14

1:30 pm-3:07 pm

Nonstop1h 37m

Sioux Falls Joe Foss Field

Sat 12/21

12:07 pm-2:10 pm

Nonstop2h 03m

$189

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

Sat 12/14

8:05 am-3:54 pm

1 stop8h 49m

Rapid City

Tue 12/17

5:26 am-1:14 pm

1 stop6h 48m

$196

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

Fri 12/6

7:40 pm-9:30 pm

Nonstop1h 50m

Sioux Falls Joe Foss Field

Tue 12/10

8:00 am-9:52 am

Nonstop1h 52m

$199

ChicagoSioux Falls

ORD - FSD

ORDFSD

Chicago O'Hare Intl

Wed 1/1

5:50 pm-11:02 pm

1 stop5h 12m

Sioux Falls Joe Foss Field

Wed 1/8

4:27 pm-9:58 pm

1 stop5h 31m

$208

ChicagoSioux Falls

MDW - FSD

MDWFSD

Chicago Midway

Fri 1/3

5:04 pm-11:07 pm

1 stop6h 03m

Sioux Falls Joe Foss Field

Thu 1/9

5:05 am-9:39 am

1 stop4h 34m

$208

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

Thu 12/19

7:35 pm-9:24 pm

Nonstop2h 49m

Rapid City

Thu 12/26

6:05 am-9:39 am

Nonstop2h 34m

$209

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

Sat 12/14

1:45 pm-10:59 pm

2 stops10h 14m

Rapid City

Tue 12/17

11:49 am-7:45 pm

1 stop6h 56m

$227

ChicagoRapid City

MDW - RAP

MDWRAP

Chicago Midway

Fri 1/10

6:59 pm-10:45 pm

1 stop4h 46m

Rapid City

Sun 1/12

6:00 am-12:46 pm

1 stop5h 46m

$228

MolineSioux Falls

MLI - FSD

MLIFSD

Moline Quad-City

Wed 12/4

5:46 pm-9:30 pm

1 stop3h 44m

Sioux Falls Joe Foss Field

Sat 12/7

1:50 pm-9:00 pm

1 stop7h 10m

$298

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Wed 5/7

4:30 pm-8:33 pm

1 stop5h 03m

Rapid City

Tue 5/13

5:48 pm-11:18 pm

1 stop4h 30m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 35 results
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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.

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 $332). Flying from Illinois to South Dakota in May is currently the most expensive (average of $425). 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 November 21, 2024.

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 November 21, 2024.

The most flights from USIL to USSD are scheduled on a Wednesday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 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 November 21, 2024.
Read reviews from past customers who have flown American Airlines, United Airlines and Delta 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
8,758 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

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

Delta
8.0
Very good
8,758 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

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

United Airlines
7.4
Good
9,172 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

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

Allegiant Air
7.4
Good
850 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

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
8,758 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

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

Frontier
6.1
Okay
3,539 reviews
Delta
8.0
Very good
8,758 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

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 Delta, which is currently one of the cheapest options available, starting at $98. Frontier flights start at $125 while deals on United Airlines start at $209 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 $332). Flying from Illinois to South Dakota in May is currently the most expensive (average of $425). 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

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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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Denver Air ConnectionCheapest$151Average$155FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$179Average$303FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$354FlexibilityNo cancel feeOn-time69%
DeltaCheapest$218Average$408FlexibilityNo cancel feeOn-timeN/A
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