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$61+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — ORD
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
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 November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$189
(United Airlines)

One-way from

$61
(Frontier)

Popular in

March

Cheapest in

September

Average price

$318

Good round-trip deal

$317 or less

Good one-way deal

$272 or less
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Chicago (CHI) flights.
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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. 2% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 5, 2025.

This United Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 12/56:08 pmFSD - ORD
Nonstop1h 57mUnited Airlines
Mon 12/88:04 pmORD - FSD
Nonstop1h 46mUnited Airlines
Deal found 11/4$189
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 11/258:00 amFSD - ORD
Nonstop1h 53mUnited Airlines
Sat 11/298:45 amORD - FSD
Nonstop1h 57mUnited Airlines
Deal found 11/2$197
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/216:23 pmFSD - ORD
Nonstop1h 57mUnited Airlines
Mon 11/248:45 amORD - FSD
Nonstop1h 57mUnited Airlines
Deal found 11/3$204
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
Thu 12/115:55 pmFSD - ORD
1 stop19h 21mMultiple Airlines
Sun 12/147:00 amORD - FSD
1 stop6h 31mMultiple Airlines
Deal found 11/3$208
This Delta deal was found by Cheapflights users on 11/3. 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.
Tue 12/91:30 pmFSD - MDW
1 stop4h 48mDelta
Wed 12/171:50 pmMDW - FSD
1 stop5h 50mDelta
Deal found 11/3$209
This Delta deal was found by Cheapflights users on 11/5. 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 12/124:25 pmFSD - ORD
1 stop5h 15mDelta
Sun 12/146:00 amORD - FSD
1 stop4h 20mDelta
Deal found 11/5$209
This Delta deal was found by Cheapflights users on 11/3. 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.
Wed 12/105:14 amFSD - MDW
2 stops7h 20mDelta
Mon 12/155:29 pmMDW - FSD
1 stop5h 45mDelta
Deal found 11/3$214
This Delta deal was found by Cheapflights users on 11/3. 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 12/115:14 amFSD - ORD
2 stops8h 36mDelta
Mon 12/156:00 amORD - FSD
1 stop4h 20mDelta
Deal found 11/3$214
This United Airlines deal was found by Cheapflights users on 11/5. 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 11/1911:17 amFSD - ORD
Nonstop1h 55mUnited Airlines
Sat 11/228:00 pmORD - FSD
Nonstop1h 46mUnited Airlines
Deal found 11/5$219
This United Airlines deal was found by Cheapflights users on 11/3. 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 12/126:08 pmFSD - ORD
Nonstop1h 57mUnited Airlines
Mon 12/158:04 pmORD - FSD
Nonstop1h 46mUnited Airlines
Deal found 11/3$223
This Delta deal was found by Cheapflights users on 11/2. 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.
Tue 11/185:18 amFSD - ORD
1 stop6h 16mDelta
Fri 11/285:42 pmORD - FSD
1 stop5h 18mDelta
Deal found 11/2$224
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 12/196:16 pmFSD - ORD
Nonstop2h 04mUnited Airlines
Tue 12/238:50 amORD - FSD
Nonstop2h 02mUnited Airlines
Deal found 11/4$228

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 November 5, 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

Sat 12/13

8:00 am-9:53 am

Nonstop1h 53m

Chicago O'Hare Intl

Mon 12/15

8:04 pm-9:50 pm

Nonstop1h 46m

$189

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Mon 12/22

3:08 pm-5:10 pm

Nonstop2h 02m

Chicago O'Hare Intl

Thu 12/25

7:55 pm-9:56 pm

Nonstop2h 01m

$189

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Fri 12/12

6:08 pm-8:05 pm

Nonstop1h 57m

Chicago O'Hare Intl

Sun 12/14

3:35 pm-5:33 pm

Nonstop1h 58m

$189

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Tue 11/25

8:00 am-9:53 am

Nonstop1h 53m

Chicago O'Hare Intl

Sat 11/29

8:45 am-10:42 am

Nonstop1h 57m

$197

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Thu 12/11

5:14 am-9:19 am

1 stop4h 05m

Chicago Midway

Mon 12/15

5:29 pm-11:14 pm

1 stop5h 45m

$209

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Wed 12/10

5:14 am-9:19 am

1 stop4h 05m

Chicago Midway

Mon 12/15

5:29 pm-11:14 pm

1 stop5h 45m

$209

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Wed 12/3

1:30 pm-6:18 pm

1 stop4h 48m

Chicago Midway

Sat 12/6

1:50 pm-7:40 pm

1 stop5h 50m

$209

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Sat 12/13

8:01 am-1:10 pm

1 stop5h 09m

Chicago Midway

Mon 12/15

5:29 pm-11:14 pm

1 stop5h 45m

$209

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Thu 2/19

1:02 pm-6:37 pm

1 stop5h 35m

Chicago Midway

Sat 2/21

9:50 am-3:37 pm

1 stop5h 47m

$209

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Fri 2/6

1:02 pm-6:36 pm

1 stop5h 34m

Chicago Midway

Sun 2/8

9:50 am-3:37 pm

1 stop5h 47m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 54 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, March is the cheapest month in which you can book a flight from Sioux Falls to Illinois (average of $187). Flying from Sioux Falls to Illinois in June is currently the most expensive (average of $224). 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 November 5, 2025.

A simple way to save on the total cost of your ticket is to fly from Sioux Falls to Illinois in the evening. If you’re flexible enough to do this you can expect to save up to 50% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Sioux Falls to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Sioux Falls to Illinois. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Sioux Falls to Illinois flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 November 5, 2025.

The most flights from FSD to USIL are scheduled on a Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

How much does it cost to fly round-trip from Sioux Falls to Illinois?

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 November 5, 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
7.9
Good
8,004 reviews

Crew

8.5

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,004 reviews
Delta
7.9
Good
8,004 reviews

Crew

8.5

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,002 reviews
Delta
7.9
Good
8,004 reviews

Crew

8.5

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,042 reviews
Delta
7.9
Good
8,004 reviews

Crew

8.5

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 United Airlines, Delta, or American 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 $61 on Frontier. Other airlines that offer cheap prices include Delta from $126 and United Airlines from $126 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 Republic Airways (100%), GoJet (93%) or Copa Airlines (89%) 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 $838 for a flight from Sioux Falls to Illinois. The cheapest flight overall is $124 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, March is the cheapest month in which you can book a flight from Sioux Falls to Illinois (average of $187). Flying from Sioux Falls to Illinois in June is currently the most expensive (average of $224). 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.

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Alternative routes for Sioux Falls to Illinois

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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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$189Average$232FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$299FlexibilityNo cancel feeOn-time69%
DeltaCheapest$208Average$263FlexibilityNo cancel feeOn-timeN/A

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