$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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Sioux Falls to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 abril 29, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $169 (American Airlines) |
One-way from | $103 (Trip.com) |
Popular in | March |
Cheapest in | January |
Average price | $354 |
Good round-trip deal | $339 or less |
Good one-way deal | $239 or less |
Find flight deals from Sioux Falls to Illinois
Cheapest flights from Sioux Falls to IllinoisExplore 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 abril 29, 2025.
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 abril 29, 2025.
This American Airlines deal was found by Cheapflights users on 4/29. 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.
This Delta deal was found by Cheapflights users on 4/29. 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.
This Delta deal was found by Cheapflights users on 4/29. 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.
This Frontier deal was found by Cheapflights users on 4/29. 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.
This CheapOair deal was found by Cheapflights users on 4/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/28. 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.
This Mytrip deal was found by Cheapflights users on 4/28. 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.
This American Airlines deal was found by Cheapflights users on 4/29. 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.
This United Airlines deal was found by Cheapflights users on 4/29. 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.
This Delta deal was found by Cheapflights users on 4/29. 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.
This American Airlines deal was found by Cheapflights users on 4/28. 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.
This United deal was found by Cheapflights users on 4/28. 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.
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 abril 29, 2025.
Use the filters below to find and compare flights from Sioux Falls to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Sioux FallsChicago
FSD - ORD
FSDORD
Sioux Falls Joe Foss Field
jue. 7/17
5:58 pm-7:44 pm
Nonstop1h 46m
Chicago O'Hare Intl
jue. 8/7
10:15 am-12:18 pm
Nonstop2h 03m
Sioux FallsChicago
FSD - MDW
FSDMDW
Sioux Falls Joe Foss Field
mar. 8/26
6:00 am-12:30 pm
2 stops6h 30m
Chicago Midway
jue. 9/4
6:45 pm-10:47 pm
1 stop4h 02m
Sioux FallsChicago
FSD - ORD
FSDORD
Sioux Falls Joe Foss Field
mar. 8/26
6:00 am-12:38 pm
2 stops6h 38m
Chicago O'Hare Intl
jue. 9/4
6:00 am-9:52 am
1 stop3h 52m
Sioux FallsChicago
FSD - ORD
FSDORD
Sioux Falls Joe Foss Field
vie. 6/6
3:58 pm-11:59 pm
1 stop8h 01m
Chicago O'Hare Intl
dom. 6/8
6:00 am-2:58 pm
1 stop8h 58m
Sioux FallsChicago
FSD - MDW
FSDMDW
Sioux Falls Joe Foss Field
lun. 5/12
2:08 pm-7:08 pm
1 stop5h 00m
Chicago Midway
jue. 5/15
8:03 pm-1:18 pm
1 stop17h 15m
Sioux FallsChicago
FSD - ORD
FSDORD
Sioux Falls Joe Foss Field
vie. 10/10
6:11 pm-8:10 pm
Nonstop1h 59m
Chicago O'Hare Intl
lun. 10/13
8:15 pm-10:07 pm
Nonstop1h 52m
Sioux FallsChicago
FSD - ORD
FSDORD
Sioux Falls Joe Foss Field
lun. 5/12
10:00 am-4:25 pm
1 stop6h 25m
Chicago O'Hare Intl
jue. 5/15
9:55 am-9:08 am
2 stops23h 13m
Sioux FallsSt. Louis
FSD - STL
FSDSTL
Sioux Falls Joe Foss Field
mar. 6/10
6:20 am-11:58 am
1 stop5h 38m
Lambert-St Louis
mar. 6/10
8:05 pm-11:58 pm
1 stop3h 53m
Sioux FallsSt. Louis
FSD - STL
FSDSTL
Sioux Falls Joe Foss Field
vie. 5/9
1:50 pm-9:01 pm
1 stop7h 11m
Lambert-St Louis
lun. 5/12
5:29 pm-10:12 pm
1 stop4h 43m
Sioux FallsSt. Louis
FSD - STL
FSDSTL
Sioux Falls Joe Foss Field
sáb. 6/7
5:00 am-10:52 am
1 stop5h 52m
Lambert-St Louis
sáb. 6/7
6:14 pm-10:57 pm
1 stop4h 43m
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.
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 abril 29, 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 abril 29, 2025.
The most flights from FSD to USIL are scheduled on a Tuesday (18 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 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 abril 29, 2025.
To help decide which airline to fly from Sioux Falls to Illinois, see what other customers have to say about Alaska Airlines, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Boarding
Comfort
Food
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Boarding
Comfort
Food
Crew
Overall
Reviews
James,Apr 2025
LAX - SFO
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.
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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.
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 abril 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$189 | Average$289 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$189 | Average$284 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$208 | Average$263 | FlexibilityNo cancel fee | On-timeN/A |