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$67+ Cheap flights from Sioux Falls (FSD) to Illinois

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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — ORD
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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Cheap flight deals from Sioux Falls to Illinois

Keep the following information in mind while searching for Sioux Falls to Illinois flight deals. Data was last updated September 19, 2025.

Round-trip from

$148
(Priceline)

One-way from

$67
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$334

Good round-trip deal

$295 or less

Good one-way deal

$212 or less
From Sioux Falls Joe Foss Field to Illinois
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One-way flight from Sioux Falls Joe Foss Field to Illinois
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Highest demand for flights based on searches. 6% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Sioux Falls Joe Foss Field to Illinois.
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Price to beat on a one-way flight from Sioux Falls Joe Foss Field to Illinois.
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Find flight deals from Sioux Falls to Illinois

Cheapest flights from Sioux Falls to Illinois
Explore the most affordable flight options available from Sioux Falls to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2025.

This Priceline deal was found by Cheapflights users on 9/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:32 pmFSD - ORD
1 stop9h 43mFrontier
Mon 11/106:00 amORD - FSD
1 stop7h 47mFrontier
Deal found 9/18$188
This American Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 11/77:16 pmFSD - ORD
Nonstop1h 58mAmerican Airlines
Mon 11/108:29 amORD - FSD
Nonstop1h 58mAmerican Airlines
Deal found 9/17$189
This American Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 11/16:00 amFSD - ORD
Nonstop1h 52mAmerican Airlines
Sat 11/88:29 amORD - FSD
Nonstop1h 58mAmerican Airlines
Deal found 9/17$191
This American Airlines deal was found by Cheapflights users on 9/17. 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.
Thu 10/26:27 pmFSD - ORD
Nonstop1h 49mAmerican Airlines
Mon 10/68:45 pmORD - FSD
Nonstop1h 57mAmerican Airlines
Deal found 9/17$199
This Delta deal was found by Cheapflights users on 9/17. 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.
Sat 11/15:20 amFSD - MDW
1 stop5h 10mDelta
Sat 11/89:20 amMDW - FSD
1 stop3h 35mDelta
Deal found 9/17$209
This Delta deal was found by Cheapflights users on 9/17. 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.
Sat 11/110:56 amFSD - ORD
1 stop5h 54mDelta
Sat 11/88:57 amORD - FSD
1 stop3h 58mDelta
Deal found 9/17$209
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 10/103:12 pmFSD - ORD
Nonstop1h 58mUnited Airlines
Sun 10/128:30 pmORD - FSD
Nonstop1h 52mUnited Airlines
Deal found 9/17$210
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/103:12 pmFSD - ORD
Nonstop1h 58mUnited Airlines
Wed 10/158:30 pmORD - FSD
Nonstop1h 52mUnited Airlines
Deal found 9/16$217
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:32 pmFSD - ORD
1 stop9h 43mFrontier
Sun 11/166:00 amORD - FSD
1 stop7h 38mFrontier
Deal found 9/17$227
This American Airlines deal was found by Cheapflights users on 9/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:00 amFSD - STL
1 stop5h 44mAmerican Airlines
Sat 12/65:14 amSTL - FSD
1 stop7h 04mAmerican Airlines
Deal found 9/16$229
This American Airlines deal was found by Cheapflights users on 9/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/85:27 pmFSD - ORD
1 stop6h 10mAmerican Airlines
Sun 11/98:29 amORD - FSD
Nonstop1h 58mAmerican Airlines
Deal found 9/18$229
This American Airlines deal was found by Cheapflights users on 9/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:27 pmFSD - ORD
Nonstop1h 49mAmerican Airlines
Wed 10/85:00 amORD - FSD
1 stop7h 45mAmerican Airlines
Deal found 9/18$234

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls to Illinois 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 September 19, 2025.
Use the filters below to find and compare flights from Sioux Falls to Illinois that are best for you.

Fly from

Sioux Falls

Fly to

Illinois

Route

Depart

Return

Price

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Fri 11/14

7:16 pm-9:14 pm

Nonstop1h 58m

Chicago O'Hare Intl

Sun 11/16

8:29 am-10:27 am

Nonstop1h 58m

$189

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Thu 10/2

6:27 pm-8:16 pm

Nonstop1h 49m

Chicago O'Hare Intl

Sat 10/4

9:56 am-11:49 am

Nonstop1h 53m

$199

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Sat 11/1

5:20 am-10:30 am

1 stop5h 10m

Chicago Midway

Sat 11/8

9:20 am-12:55 pm

1 stop3h 35m

$209

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Thu 2/19

1:20 pm-6:08 pm

1 stop4h 48m

Chicago Midway

Sat 2/21

9:20 am-3:33 pm

1 stop6h 13m

$209

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Wed 3/4

5:15 am-8:54 am

1 stop3h 39m

Chicago Midway

Sat 3/7

6:45 pm-10:58 pm

1 stop4h 13m

$209

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Sat 11/1

10:56 am-4:50 pm

1 stop5h 54m

Chicago O'Hare Intl

Sat 11/8

8:57 am-12:55 pm

1 stop3h 58m

$209

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 12/3

7:00 am-12:44 pm

1 stop5h 44m

Lambert-St Louis

Sat 12/6

5:14 am-12:18 pm

1 stop7h 04m

$229

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Wed 3/4

5:15 am-8:54 am

1 stop3h 39m

Lambert-St Louis

Sat 3/7

5:30 pm-10:58 pm

1 stop5h 28m

$229

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Thu 10/2

12:56 pm-4:45 pm

1 stop3h 49m

Lambert-St Louis

Mon 10/6

5:31 pm-10:57 pm

1 stop5h 26m

$239

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Wed 11/5

8:00 am-9:53 am

Nonstop1h 53m

Chicago O'Hare Intl

Sat 11/8

8:00 pm-9:46 pm

Nonstop1h 46m

$241

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 52 results
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Best time to book a flight from Sioux Falls to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Sioux Falls 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 Sioux Falls to Illinois

What is the cheapest month to book a flight from Sioux Falls to Illinois?

Currently, August is the cheapest month in which you can book a flight from Sioux Falls to Illinois (average of $245). Flying from Sioux Falls to Illinois in March is currently the most expensive (average of $321). 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 FSD to IL?

Find hourly flight availability from Sioux Falls to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 19, 2025.

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

Weekly flight availability from Sioux Falls to Illinois

Explore weekly flight availability from Sioux Falls to Illinois. 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 September 19, 2025.

The most flights from FSD to USIL are scheduled on a Monday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated September 19, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Sioux Falls to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to Illinois. 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 from for flights from Sioux Falls to Illinois?

    Most people fly from Sioux Falls Joe Foss Field (FSD) if they book a flight from Sioux Falls to Illinois. Sioux Falls Joe Foss Field is conveniently located just 2.6 mi from Sioux Falls’s city center.

  • How long is the flight from Sioux Falls to Illinois?

    There are many flights that can get you from Sioux Falls to Illinois in 1h 53m. Fly via American Airlines, Delta, or United Airlines to get the fastest option. The distance between Sioux Falls and Illinois is about 461 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Sioux Falls to Illinois one-way?

    One-way options have recently been found by users for as low as $93 on Frontier. Other airlines that offer cheap prices include United Airlines from $129 and Delta from $224 one-way.

  • What are the most popular routes from Sioux Falls to Illinois?

    Most travelers choose Sioux Falls Joe Foss Field - Chicago O'Hare Intl, Sioux Falls Joe Foss Field - Chicago Midway or Sioux Falls Joe Foss Field - Lambert-St Louis when deciding on the best route from Sioux Falls to Illinois.

  • What are the most reliable airlines from Sioux Falls to Illinois?

    No one likes to see their flight delayed. When booking a flight from Sioux Falls to Illinois consider choosing Copa Airlines (86%), Qatar Airways (80%) or Air New Zealand (71%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Sioux Falls to Illinois?

    On average you can expect to pay $1,614 for a flight from Sioux Falls to Illinois. The cheapest flight overall is $164 while the most popular route, (Sioux Falls Joe Foss Field - Chicago O'Hare Intl) is currently priced at $189.

  • Can I find deals for flights from Sioux Falls to Illinois that include hotel bookings?

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

  • How can I find direct flights from Sioux Falls to Illinois?

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

  • Can I find deals for business class flights from Sioux Falls to Illinois?

    Yes. Cheapflights offers flight deals from Sioux Falls to Illinois 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 Sioux Falls to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Sioux Falls to Illinois (average of $245). Flying from Sioux Falls to Illinois in March is currently the most expensive (average of $321). 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 Sioux Falls to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Sioux Falls to Illinois

Discover the top 3 airlines that operate flights from Sioux Falls to Illinois. 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 September 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$189Average$248FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$299FlexibilityNo cancel feeOn-time69%
DeltaCheapest$208Average$263FlexibilityNo cancel feeOn-timeN/A

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