How many flights depart from South Dakota to Illinois on average per day?

As of September 2025, there are 17 flights per day flying from South Dakota to Illinois. The most common time of day flights depart is 1:00PM, with 52% of flights taking off in the afternoon.

What is the cheapest airline that flies from South Dakota to Illinois?

Frontier, Delta, and United Airlines are the most popular carriers operating from South Dakota to Illinois

How long is the flight from South Dakota to Illinois?

The flight from South Dakota to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Sioux Falls (a popular airport in South Dakota) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 1h 46m on average. If you fly from Rapid City (another popular airport in South Dakota) to Chicago O'Hare Intl Airport, then the average flight time is 2h 21m.

What airlines fly to Illinois?

United Airlines, American Airlines and Denver Air Connection are the top three most popular airlines that fly to Illinois from South Dakota according to our data. United Airlines is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many flights depart from South Dakota to Illinois on average per week?

The number of flights available between South Dakota and Illinois is 124 per week as of September 2025. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

When did momondo last update prices for flights from South Dakota to Illinois?

Prices for flights from South Dakota to Illinois are updated daily.

How many operators does momondo search for flights from South Dakota to Illinois?

The number of operators available for flights from South Dakota to Illinois is 3 as of September 2025.

How old do you have to be to fly from South Dakota to Illinois?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$73 Cheap Flights from South Dakota to Illinois in 2025/26

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Find the cheapest flights from South Dakota to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

2:32 pm - 12:16 amFSD-ORD

9h 44m1 stop

5:00 am - 12:38 pmORD-FSD

7h 38m1 stop

$148Frontier

Find Deal

vie., oct. 31 - dom., nov. 2

3:19 pm - 11:53 pmFSD-ORD

8h 34m1 stop

10:51 am - 6:33 pmORD-FSD

7h 42m1 stop

$167Frontier

Find Deal

jue., oct. 23 - lun., oct. 27

6:10 pm - 8:09 pmFSD-ORD

1h 59mnonstop

12:45 pm - 2:37 pmORD-FSD

1h 52mnonstop

$189United Airlines

Find Deal

mar., oct. 14 - sáb., oct. 18

6:00 am - 7:52 amFSD-ORD

1h 52mnonstop

3:07 pm - 4:55 pmORD-FSD

1h 48mnonstop

$194American Airlines

Find Deal

mié., oct. 15 - sáb., oct. 18

8:00 am - 9:51 amFSD-ORD

1h 51mnonstop

8:30 pm - 10:22 pmORD-FSD

1h 52mnonstop

$208United Airlines

Find Deal

jue., oct. 23 - sáb., oct. 25

1:20 pm - 6:08 pmFSD-MDW

4h 48m1 stop

6:45 pm - 10:58 pmMDW-FSD

4h 13m1 stop

$209Delta

Find Deal

sáb., ene. 17 - sáb., ene. 31

1:20 pm - 6:08 pmFSD-MDW

4h 48m1 stop

1:00 pm - 7:18 pmMDW-FSD

6h 18m2 stops

$214Delta

Find Deal

sáb., ene. 17 - sáb., ene. 31

4:58 pm - 11:42 pmRAP-ORD

5h 44m1 stop

8:30 am - 4:03 pmORD-RAP

8h 33m1 stop

$229American Airlines

Find Deal

mié., oct. 22 - mié., oct. 29

2:54 pm - 9:37 amFSD-ORD

18h 43m1 stop

8:26 am - 8:01 pmORD-FSD

11h 35m2 stops

$260Multiple Airlines

Find Deal

dom., oct. 5 - vie., oct. 31

2:54 pm - 9:37 amFSD-ORD

18h 43m1 stop

6:35 am - 10:51 amORD-FSD

28h 16m1 stop

$270Multiple Airlines

Find Deal

dom., oct. 5 - mié., oct. 29

United Airlines flights from South Dakota to Illinois

Our best United Airlines deals on South Dakota to Illinois flight tickets

United Airlines

Oct 14

FSD6:10 pmSioux Falls Joe Foss Field

1h 59m

ORD8:09 pmChicago O'Hare Intl

Oct 18

ORD12:45 pmChicago O'Hare Intl

1h 52m

FSD2:37 pmSioux Falls Joe Foss Field

$189

Find similar

United Airlines

Oct 23

FSD8:00 amSioux Falls Joe Foss Field

1h 51m

ORD9:51 amChicago O'Hare Intl

Oct 25

ORD8:30 pmChicago O'Hare Intl

1h 52m

FSD10:22 pmSioux Falls Joe Foss Field

$208

Find similar

United Airlines

Oct 5

FSD8:00 amSioux Falls Joe Foss Field

1h 51m

ORD9:51 amChicago O'Hare Intl

Oct 31

ORD8:00 pmChicago O'Hare Intl

1h 46m

FSD9:46 pmSioux Falls Joe Foss Field

$219

Find similar

Delta flights from South Dakota to Illinois

Our best Delta deals on South Dakota to Illinois flight tickets

Delta

Jan 17

FSD1:20 pmSioux Falls Joe Foss Field

4h 48m

1 stop

MDW6:08 pmChicago Midway

Jan 31

MDW6:45 pmChicago Midway

4h 13m

1 stop

FSD10:58 pmSioux Falls Joe Foss Field

$209

Find similar

Delta

Jan 17

FSD4:09 pmSioux Falls Joe Foss Field

5h 47m

1 stop

ORD9:56 pmChicago O'Hare Intl

Jan 31

ORD10:35 amChicago O'Hare Intl

8h 43m

2 stops

FSD7:18 pmSioux Falls Joe Foss Field

$214

Find similar

Delta

Mar 3

FSD5:15 amSioux Falls Joe Foss Field

3h 39m

1 stop

STL8:54 amLambert-St Louis

Mar 7

STL5:30 pmLambert-St Louis

5h 28m

1 stop

FSD10:58 pmSioux Falls Joe Foss Field

$229

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

vie. 10/31

2:32 pm-12:16 am

1 stop9h 44m

Chicago O'Hare Intl

dom. 11/2

5:00 am-12:38 pm

1 stop7h 38m

$148

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

jue. 10/23

3:19 pm-11:53 pm

1 stop8h 34m

Chicago O'Hare Intl

lun. 10/27

10:51 am-6:33 pm

1 stop7h 42m

$167

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

mar. 10/14

6:10 pm-8:09 pm

Nonstop1h 59m

Chicago O'Hare Intl

sáb. 10/18

12:45 pm-2:37 pm

Nonstop1h 52m

$189

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

mié. 10/15

6:00 am-7:52 am

Nonstop1h 52m

Chicago O'Hare Intl

sáb. 10/18

3:07 pm-4:55 pm

Nonstop1h 48m

$194

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

jue. 10/23

8:00 am-9:51 am

Nonstop1h 51m

Chicago O'Hare Intl

sáb. 10/25

8:30 pm-10:22 pm

Nonstop1h 52m

$208

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

sáb. 1/17

1:20 pm-6:08 pm

1 stop4h 48m

Chicago Midway

sáb. 1/31

6:45 pm-10:58 pm

1 stop4h 13m

$209

Sioux FallsChicago

FSD - MDW

FSDMDW

Sioux Falls Joe Foss Field

sáb. 1/17

1:20 pm-6:08 pm

1 stop4h 48m

Chicago Midway

sáb. 1/31

1:00 pm-7:18 pm

2 stops6h 18m

$214

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

mié. 10/22

4:58 pm-11:42 pm

1 stop5h 44m

Chicago O'Hare Intl

mié. 10/29

8:30 am-4:03 pm

1 stop8h 33m

$229

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

dom. 10/5

2:54 pm-9:37 am

1 stop18h 43m

Chicago O'Hare Intl

vie. 10/31

8:26 am-8:01 pm

2 stops11h 35m

$260

Sioux FallsChicago

FSD - ORD

FSDORD

Sioux Falls Joe Foss Field

dom. 10/5

2:54 pm-9:37 am

1 stop18h 43m

Chicago O'Hare Intl

mié. 10/29

6:35 am-10:51 am

1 stop28h 16m

$270

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How to get the cheapest flight ticket from South Dakota to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from South Dakota is in January. Flight prices, which tend to average around $193, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $273.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from South Dakota to Illinois is on a Friday when prices can be found for as low as $434. Flights from South Dakota to Illinois on a Sunday will generally be more expensive and average around $604. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from South Dakota to Illinois during this time can be as low as $248. Flights in the afternoon are often more expensive with an average ticket price of $502.

What is the cheapest South Dakota to Illinois flight route?

Fly from Sioux Falls Joe Foss Field to Chicago O'Hare Intl for the best South Dakota - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from South Dakota when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $286 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from South Dakota for as low as $189 on momondo.

What cabin class options are available on South Dakota to Illinois flights?

There are 4 cabin classes available to choose from on South Dakota to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on South Dakota to Illinois flights?

You could potentially save up to 22% on your flight if you consider stops on a South Dakota to Illinois flight.

Cheap South Dakota to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Dakota to Illinois

Best Price Found	$192
Fastest flight time	1h 34m
Direct flights	Every day
Airports in Illinois	1 airport

The best one-way flight to Illinois from South Dakota in the past 72 hours is $192. The best round-trip flight deal from South Dakota to Illinois found on momondo in the last 72 hours is $281.

The fastest flight from South Dakota to Illinois takes 1h 34m

Direct flights go from South Dakota to Illinois every day.

There is 1 airport near Illinois: Chicago O'Hare Intl (ORD)

Search flight deals

When did momondo last update prices for flights from South Dakota to Illinois?
Prices for flights from South Dakota to Illinois are updated daily.
How many operators does momondo search for flights from South Dakota to Illinois?
The number of operators available for flights from South Dakota to Illinois is 3 as of September 2025.
How old do you have to be to fly from South Dakota to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from South Dakota to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from South Dakota to Illinois is Canadair (Bombardier) Regional Jet 700 (23.04% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet CRJ-550 (21.08%), Boeing 737-800 (13.40%), and Airbus A320-100/200 (6.70%).

Best airlines flying from South Dakota to Illinois

Compare and see reviews for airlines that fly from South Dakota to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Denver Air Connection	PriceFrom $172	Free Cancellation	Rating 9.0 17 reviews	Search Denver Air Connection flights
American Airlines	PriceFrom $189	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines flights
Delta	PriceFrom $208	Free Cancellation	Rating 7.9 7,973 reviews	Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from South Dakota to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from South Dakota to Illinois for you.

Can I find flights from South Dakota to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from South Dakota which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from South Dakota to Illinois?

Once all potential South Dakota to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from South Dakota to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from South Dakota. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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sáb. 10/25

sáb. 11/1

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Find better results for your trip to Illinois

Popular cities in Illinois

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Flights to Washington, D.C.from $60

Flights to Bostonfrom $68

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Flights to Seattlefrom $86

South Dakota flight routes

Flights from Sioux Falls Joe Foss Field to Nashville Intl

Flights from Sioux Falls Joe Foss Field to Orlando Sanford Intl

Flights from Sioux Falls Joe Foss Field to Denver Intl

Flights from Sioux Falls Joe Foss Field to Las Vegas Harry Reid Intl

Flights from Rapid City to Las Vegas Harry Reid Intl

Flights from Sioux Falls Joe Foss Field to Phoenix-Mesa Gateway

Cheap flights from South Dakota to Illinois from $73

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South Dakota to Illinois departing on 10/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Price Alerts

Find the cheapest flights from South Dakota to Illinois

Cheap round-trip flights

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Cheap last minute flights

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United Airlines flights from South Dakota to Illinois

Our best United Airlines deals on South Dakota to Illinois flight tickets

Delta flights from South Dakota to Illinois

Our best Delta deals on South Dakota to Illinois flight tickets

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How to get the cheapest flight ticket from South Dakota to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from South Dakota to Illinois during this time can be as low as $248. Flights in the afternoon are often more expensive with an average ticket price of $502.

What is the cheapest South Dakota to Illinois flight route?

Fly from Sioux Falls Joe Foss Field to Chicago O'Hare Intl for the best South Dakota - Illinois flight prices

How far in advance should I book a flight to Illinois?

What cabin class options are available on South Dakota to Illinois flights?

There are 4 cabin classes available to choose from on South Dakota to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on South Dakota to Illinois flights?

You could potentially save up to 22% on your flight if you consider stops on a South Dakota to Illinois flight.

What is the cheapest airline that flies from South Dakota to Illinois?

Frontier, Delta, and United Airlines are the most popular carriers operating from South Dakota to Illinois

What airlines fly to Illinois?

How many flights depart from South Dakota to Illinois on average per day?

As of September 2025, there are 17 flights per day flying from South Dakota to Illinois. The most common time of day flights depart is 1:00PM, with 52% of flights taking off in the afternoon.

How many flights depart from South Dakota to Illinois on average per week?

The number of flights available between South Dakota and Illinois is 124 per week as of September 2025. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

How long is the flight from South Dakota to Illinois?

Cheap South Dakota to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Dakota to Illinois

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from South Dakota to Illinois?

How many operators does momondo search for flights from South Dakota to Illinois?

How old do you have to be to fly from South Dakota to Illinois?

What documentation or ID do you need to fly to Illinois?

What is the most popular plane model from South Dakota to Illinois?

Best airlines flying from South Dakota to Illinois

Compare and see reviews for airlines that fly from South Dakota to Illinois with momondo

Why use momondo?

Why should I use momondo to find a flight deal from South Dakota to Illinois?

Can I find flights from South Dakota to Illinois with flexible booking policies on momondo?

How can momondo help me find flights from South Dakota to Illinois?

I’m not ready to book a flight from South Dakota to Illinois right now. Can momondo alert me if prices change?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo