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$103+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — ORD
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheap 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 February 11, 2026.

This Delta deal was found by Cheapflights users on 2/9. 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 4/211:44 pm
FSD
-
MDW
1 stop4h 52m
Delta
Sat 4/257:16 pm
MDW
-
FSD
1 stop3h 46m
Delta
Deal found 2/9$167
This Delta deal was found by Cheapflights users on 2/8. 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 4/308:05 am
FSD
-
ORD
1 stop3h 29m
Delta
Sat 5/93:55 pm
ORD
-
FSD
1 stop3h 31m
Delta
Deal found 2/8$167
This Delta deal was found by Cheapflights users on 2/10. 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 3/275:00 am
FSD
-
MDW
1 stop3h 50m
Delta
Fri 4/32:05 pm
MDW
-
FSD
1 stop5h 15m
Delta
Deal found 2/10$177
This Delta deal was found by Cheapflights users on 2/10. 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 10/2410:58 am
FSD
-
ORD
1 stop3h 59m
Delta
Mon 10/265:20 pm
ORD
-
FSD
1 stop5h 31m
Delta
Deal found 2/10$177
This American Airlines deal was found by Cheapflights users on 2/11. 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 10/247:18 am
FSD
-
ORD
Nonstop1h 52m
American Airlines
Mon 10/268:20 pm
ORD
-
FSD
Nonstop1h 57m
American Airlines
Deal found 2/11$189
This American Airlines deal was found by Cheapflights users on 2/10. 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 3/277:42 pm
FSD
-
ORD
Nonstop1h 48m
American Airlines
Fri 4/39:47 am
ORD
-
FSD
Nonstop1h 51m
American Airlines
Deal found 2/10$190
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Sat 3/77:43 am
FSD
-
ORD
Nonstop1h 52m
United Airlines
Sun 3/88:10 pm
ORD
-
FSD
Nonstop1h 52m
United Airlines
Deal found 2/8$203
This United Airlines deal was found by Cheapflights users on 2/10. 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 2/2511:21 am
FSD
-
ORD
Nonstop1h 54m
United Airlines
Sat 3/288:10 pm
ORD
-
FSD
Nonstop1h 52m
United Airlines
Deal found 2/10$204
This American Airlines deal was found by Cheapflights users on 2/11. 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 8/276:07 pm
FSD
-
ORD
Nonstop1h 45m
American Airlines
Sun 8/3010:20 pm
ORD
-
FSD
Nonstop2h 07m
American Airlines
Deal found 2/11$209
This Delta deal was found by Cheapflights users on 2/10. 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 2/251:00 pm
FSD
-
ORD
1 stop5h 01m
Delta
Sat 3/286:35 pm
ORD
-
FSD
1 stop4h 29m
Delta
Deal found 2/10$213
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Sat 2/216:45 pm
FSD
-
ORD
Nonstop1h 50m
United Airlines
Sun 2/228:45 am
ORD
-
FSD
Nonstop2h 01m
United Airlines
Deal found 2/7$219
This Delta deal was found by Cheapflights users on 2/9. 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 8/251:20 pm
FSD
-
MDW
1 stop4h 45m
Delta
Fri 8/286:45 pm
MDW
-
FSD
1 stop4h 01m
Delta
Deal found 2/9$232

Find 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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$167
(Delta)

One-way from

$103
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$289

Good round-trip deal

$339 or less

Good one-way deal

$280 or less
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Chicago (CHI) flights.
Search Deals
From Sioux Falls Joe Foss Field to Illinois
Search Deals
One-way flight from Sioux Falls Joe Foss Field to Illinois
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Sioux Falls Joe Foss Field to Illinois.
Search Deals
Price to beat on a one-way flight from Sioux Falls Joe Foss Field to Illinois.
Search Deals

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 February 11, 2026.
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 - MDW

FSDMDW

Sioux Falls Joe Foss Field

Tue 4/21

1:44 pm-6:36 pm

1 stop4h 52m

Chicago Midway

Sat 4/25

7:16 pm-11:02 pm

1 stop3h 46m

$167

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Mon 3/2

1:00 pm-6:01 pm

1 stop5h 01m

Chicago O'Hare Intl

Thu 3/5

6:15 am-10:08 am

1 stop3h 53m

$167

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Thu 4/30

8:05 am-11:34 am

1 stop3h 29m

Chicago O'Hare Intl

Sat 5/9

1:44 pm-10:57 pm

2 stops9h 13m

$172

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Sat 4/11

9:50 am-1:25 pm

1 stop3h 35m

Chicago Midway

Sat 4/18

2:12 pm-7:22 pm

1 stop5h 10m

$177

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Fri 3/27

5:00 am-8:50 am

1 stop3h 50m

Chicago Midway

Mon 3/30

7:20 pm-11:04 pm

1 stop3h 44m

$177

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Fri 3/27

5:00 am-8:50 am

1 stop3h 50m

Chicago Midway

Fri 4/3

2:05 pm-7:20 pm

1 stop5h 15m

$177

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Sat 4/11

1:34 pm-5:53 pm

1 stop4h 19m

Chicago O'Hare Intl

Sat 4/18

7:07 pm-11:02 pm

1 stop3h 55m

$177

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Fri 3/27

6:35 pm-8:25 pm

Nonstop1h 50m

Chicago O'Hare Intl

Mon 3/30

7:58 pm-9:49 pm

Nonstop1h 51m

$189

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Sat 4/11

6:35 pm-8:32 pm

Nonstop1h 57m

Chicago O'Hare Intl

Sat 4/18

8:45 am-10:42 am

Nonstop1h 57m

$189

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Sat 3/7

7:43 am-9:35 am

Nonstop1h 52m

Chicago O'Hare Intl

Sun 3/8

8:10 pm-10:02 pm

Nonstop1h 52m

$203

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 46 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 February 11, 2026.

A simple way to save on the total cost of your ticket is to fly from Sioux Falls to Illinois at noon. If you’re flexible enough to do this you can expect to save up to 26% 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 February 7, 2026.

Travelers seeking maximum savings on their Sioux Falls to Illinois flight should consider departing on Wednesday 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.

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 February 11, 2026.
Peruse reviews from past customers who have flown with 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.
United Airlines
7.4
Good
9,274 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,274 reviews
United Airlines
7.4
Good
9,274 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
American Airlines
7.2
Good
11,266 reviews
United Airlines
7.4
Good
9,274 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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 50m. Fly via Delta, United Airlines, 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 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 Envoy Air (74%), Republic Airways (70%) or Copa Airlines (70%) 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 $923 for a flight from Sioux Falls to Illinois. The cheapest flight overall is $155 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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Top 2 airlines flying from Sioux Falls to Illinois

Discover the top 2 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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$189Average$221FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$302FlexibilityNo cancel feeOn-time69%

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