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$81+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — ORD
Jan 21 — Jan 281
Tue 1/21
Tue 1/28
1 adult, Economy
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Cheap flight deals from Sioux Falls to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to Illinois (USIL). 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 January 16, 2025.

Round-trip from

$189
(United Airlines)

One-way from

$81
(Frontier)
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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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 January 16, 2025.

This United Airlines deal was found by Cheapflights users on 1/15. 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 2/117:45 amFSD - ORD
Nonstop2h 02mUnited Airlines
Tue 2/184:10 pmORD - FSD
Nonstop1h 44mUnited Airlines
Deal found 1/15$189
This American Airlines deal was found by Cheapflights users on 1/15. 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 2/64:46 pmFSD - ORD
Nonstop1h 46mAmerican Airlines
Sun 2/99:54 amORD - FSD
Nonstop1h 51mAmerican Airlines
Deal found 1/15$201
This Delta deal was found by Cheapflights users on 1/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1611:00 amFSD - MDW
1 stop6h 43mDelta
Sat 2/2211:25 amMDW - FSD
1 stop4h 16mDelta
Deal found 1/16$209
This Delta deal was found by Cheapflights users on 1/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1611:00 amFSD - ORD
1 stop4h 30mDelta
Sat 2/226:15 amORD - FSD
1 stop6h 19mDelta
Deal found 1/16$209
This Delta deal was found by Cheapflights users on 1/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/14:27 pmFSD - STL
1 stop6h 47mDelta
Fri 2/75:30 pmSTL - FSD
1 stop5h 37mDelta
Deal found 1/16$214
This Frontier deal was found by Cheapflights users on 1/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/32:31 pmFSD - ORD
1 stop10h 13mFrontier
Mon 3/106:30 amORD - FSD
1 stop7h 15mFrontier
Deal found 1/14$240
This American Airlines deal was found by Cheapflights users on 1/15. 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.
Sun 1/194:46 pmFSD - STL
1 stop5h 23mAmerican Airlines
Sun 1/266:00 pmSTL - FSD
1 stop4h 51mAmerican Airlines
Deal found 1/15$279
This United Airlines deal was found by Cheapflights users on 1/15. 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 4/89:05 amFSD - STL
1 stop7h 31mUnited Airlines
Fri 4/115:35 pmSTL - FSD
1 stop4h 37mUnited Airlines
Deal found 1/15$309
This Mytrip deal was found by Cheapflights users on 1/15. 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.
Thu 2/610:34 amFSD - ORD
2 stops12h 58mMultiple Airlines
Sun 2/94:27 pmORD - FSD
2 stops19h 47mMultiple Airlines
Deal found 1/15$350
This Frontier deal was found by Cheapflights users on 1/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/142:51 pmFSD - MDW
1 stop9h 26mFrontier
Mon 3/176:40 amMDW - FSD
1 stop7h 05mFrontier
Deal found 1/14$520
This Mytrip deal was found by Cheapflights users on 1/15. 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.
Sun 1/199:46 pmFSD - STL
3 stops20h 55mMultiple Airlines
Sun 1/264:28 pmSTL - FSD
2 stops20h 14mMultiple Airlines
Deal found 1/15$826

Find flights from Sioux Falls to Illinois within your budget

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 January 16, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Tue 2/11

7:45 am-9:47 am

Nonstop2h 02m

Chicago O'Hare Intl

Tue 2/18

4:10 pm-5:54 pm

Nonstop1h 44m

$189

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Thu 2/6

4:46 pm-6:32 pm

Nonstop1h 46m

Chicago O'Hare Intl

Sun 2/9

9:54 am-11:45 am

Nonstop1h 51m

$201

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Sun 2/16

11:00 am-5:43 pm

1 stop6h 43m

Chicago Midway

Sat 2/22

11:25 am-3:41 pm

1 stop4h 16m

$209

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Sun 2/16

11:00 am-3:30 pm

1 stop4h 30m

Chicago O'Hare Intl

Sat 2/22

6:15 am-12:34 pm

1 stop6h 19m

$209

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Sat 2/1

4:27 pm-11:14 pm

1 stop6h 47m

Lambert-St Louis

Fri 2/7

5:30 pm-11:07 pm

1 stop5h 37m

$214

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Mon 3/3

2:31 pm-12:44 am

1 stop10h 13m

Chicago O'Hare Intl

Mon 3/10

6:30 am-1:45 pm

1 stop7h 15m

$240

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 4/8

9:05 am-4:36 pm

1 stop7h 31m

Lambert-St Louis

Fri 4/11

5:35 pm-10:12 pm

1 stop4h 37m

$309

Sioux FallsSt. Louis

FSD - STL

FSDSTL

Sioux Falls Joe Foss Field

Tue 4/8

1:23 pm-7:29 pm

1 stop6h 06m

Lambert-St Louis

Thu 4/10

10:15 am-3:33 pm

1 stop5h 18m

$314

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

Thu 2/6

10:34 am-11:32 pm

2 stops12h 58m

Chicago O'Hare Intl

Sun 2/9

4:27 pm-12:14 pm

2 stops19h 47m

$350

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

Fri 3/14

2:51 pm-12:17 am

1 stop9h 26m

Chicago Midway

Mon 3/17

6:40 am-1:45 pm

1 stop7h 05m

$520

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 14 results
1
2

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.

Travel insights for flights from Sioux Falls to Illinois

Get recent, data-driven insights about flights from Sioux Falls to Illinois including ideal travel times, pricing trends, and more.

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 $320). 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 January 16, 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 January 16, 2025.

The most flights from FSD to USIL are scheduled on a Monday (13 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 Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, 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 23.0 F).

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 January 16, 2025.
To help decide which airline to fly from Sioux Falls to Illinois, see what other customers have to say about American Airlines, Frontier and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,511 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

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
8,511 reviews
Delta
8.0
Very good
8,511 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

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
8,964 reviews
Delta
8.0
Very good
8,511 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

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
8,511 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

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
3,435 reviews
Delta
8.0
Very good
8,511 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

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 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.

  • 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 $81 on Frontier. Other airlines that offer cheap prices include Delta from $202 and United Airlines from $209 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 (89%), Air Wisconsin (89%) 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 $1,000 for a flight from Sioux Falls to Illinois. The cheapest flight overall is $209 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 $320). 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 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 January 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$184Average$289FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$193Average$299FlexibilityNo cancel feeOn-time69%
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