What is the cheapest airline that flies from Rapid City to Illinois?

Delta is the most popular carrier operating from Rapid City to Illinois

When did momondo last update prices for flights from Rapid City Airport to Illinois?

Prices for flights from Rapid City Airport to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Rapid City Airport to Illinois?

As of March 2026, there are 3 operators available to choose from for flights from Rapid City Airport to Illinois.

How old do you have to be to fly from Rapid City Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rapid City Airport to Illinois.

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

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$138 Cheap Flights from Rapid City to Illinois in 2026

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Find the cheapest flights from Rapid City to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:53 am - 3:20 pm

RAP

ORD

2h 27mnonstop

9:45 am - 11:23 am

ORD

RAP

2h 38mnonstop

$208American Airlines

mer., avr. 15 - mer., avr. 22

11:40 am - 2:53 pm

RAP

ORD

2h 13mnonstop

8:00 pm - 9:41 pm

ORD

RAP

2h 41mnonstop

$209United Airlines

ven., avr. 17 - dim., avr. 19

4:57 pm - 11:48 pm

RAP

ORD

5h 51m

1 stop

9:45 am - 11:23 am

ORD

RAP

2h 38mnonstop

$218American Airlines

mer., avr. 15 - mer., avr. 22

12:00 pm - 8:14 pm

RAP

ORD

7h 14m

1 stop

4:40 pm - 6:19 pm

ORD

RAP

2h 39mnonstop

$219United Airlines

mer., avr. 1 - sam., avr. 4

11:32 am - 2:43 pm

RAP

ORD

2h 11mnonstop

7:00 am - 11:24 am

ORD

RAP

5h 24m

1 stop

$229United Airlines

jeu., avr. 2 - dim., avr. 5

12:00 pm - 8:14 pm

RAP

ORD

7h 14m

1 stop

7:00 am - 11:24 am

ORD

RAP

5h 24m

1 stop

$239United Airlines

mer., avr. 1 - dim., avr. 5

1:35 pm - 4:59 pm

RAP

ORD

2h 24mnonstop

8:45 am - 10:24 am

ORD

RAP

2h 39mnonstop

$246United Airlines

sam., mai 23 - jeu., mai 28

4:01 pm - 9:26 pm

RAP

ORD

4h 25m

1 stop

7:07 pm - 10:20 pm

ORD

RAP

4h 13m

1 stop

$249Delta

ven., avr. 10 - sam., avr. 18

11:03 am - 6:40 pm

RAP

MDW

6h 37m

1 stop

7:20 pm - 10:25 pm

MDW

RAP

4h 05m

1 stop

$249Delta

mer., avr. 1 - sam., avr. 4

4:01 pm - 9:26 pm

RAP

ORD

4h 25m

1 stop

5:04 pm - 10:20 pm

ORD

RAP

6h 16m

2 stops

$254Delta

ven., avr. 10 - sam., avr. 18

United Airlines flights from Rapid City to Illinois

Our best United Airlines deals on Rapid City to Illinois flight tickets

United Airlines

Apr 2

RAP9:20 amRapid City

2h 25m

ORD12:45 pmChicago O'Hare Intl

Apr 5

ORD9:06 amChicago O'Hare Intl

2h 30m

RAP10:36 amRapid City

$209

United Airlines

Apr 1

RAP12:00 pmRapid City

7h 14m

1 stop

ORD8:14 pmChicago O'Hare Intl

Apr 4

ORD4:40 pmChicago O'Hare Intl

2h 39m

RAP6:19 pmRapid City

$219

United Airlines

Apr 2

RAP11:32 amRapid City

2h 11m

ORD2:43 pmChicago O'Hare Intl

Apr 5

ORD7:00 amChicago O'Hare Intl

5h 24m

1 stop

RAP11:24 amRapid City

$229

Delta flights from Rapid City to Illinois

Our best Delta deals on Rapid City to Illinois flight tickets

Delta

Apr 10

RAP4:01 pmRapid City

4h 25m

1 stop

ORD9:26 pmChicago O'Hare Intl

Apr 18

ORD7:07 pmChicago O'Hare Intl

4h 13m

1 stop

RAP10:20 pmRapid City

$249

Delta

Apr 10

RAP4:01 pmRapid City

4h 25m

1 stop

ORD9:26 pmChicago O'Hare Intl

Apr 18

ORD5:04 pmChicago O'Hare Intl

6h 16m

2 stops

RAP10:20 pmRapid City

$254

Delta

Apr 8

RAP4:01 pmRapid City

6h 24m

1 stop

STL11:25 pmLambert-St Louis

Apr 13

STL5:35 pmLambert-St Louis

5h 45m

1 stop

RAP10:20 pmRapid City

$269

Fly from

Fly to

Route

Depart

Return

Price

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

mer. 4/15

11:53 am-3:20 pm

Nonstop2h 27m

Chicago O'Hare Intl

mer. 4/22

9:45 am-11:23 am

Nonstop2h 38m

$208

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

ven. 4/17

11:40 am-2:53 pm

Nonstop2h 13m

Chicago O'Hare Intl

dim. 4/19

8:00 pm-9:41 pm

Nonstop2h 41m

$209

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

mer. 4/15

4:57 pm-11:48 pm

1 stop5h 51m

Chicago O'Hare Intl

mer. 4/22

9:45 am-11:23 am

Nonstop2h 38m

$218

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

mer. 4/1

12:00 pm-8:14 pm

1 stop7h 14m

Chicago O'Hare Intl

sam. 4/4

4:40 pm-6:19 pm

Nonstop2h 39m

$219

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

jeu. 4/2

11:32 am-2:43 pm

Nonstop2h 11m

Chicago O'Hare Intl

dim. 4/5

7:00 am-11:24 am

1 stop5h 24m

$229

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

mer. 4/1

12:00 pm-8:14 pm

1 stop7h 14m

Chicago O'Hare Intl

dim. 4/5

7:00 am-11:24 am

1 stop5h 24m

$239

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

sam. 5/23

1:35 pm-4:59 pm

Nonstop2h 24m

Chicago O'Hare Intl

jeu. 5/28

8:45 am-10:24 am

Nonstop2h 39m

$246

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

ven. 4/10

4:01 pm-9:26 pm

1 stop4h 25m

Chicago O'Hare Intl

sam. 4/18

7:07 pm-10:20 pm

1 stop4h 13m

$249

Rapid CityChicago

RAP - MDW

RAPMDW

Rapid City

mer. 4/1

11:03 am-6:40 pm

1 stop6h 37m

Chicago Midway

sam. 4/4

7:20 pm-10:25 pm

1 stop4h 05m

$249

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

ven. 4/10

4:01 pm-9:26 pm

1 stop4h 25m

Chicago O'Hare Intl

sam. 4/18

5:04 pm-10:20 pm

2 stops6h 16m

$254

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Rapid City 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

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Rapid City is in August. Flight prices, which tend to average around $309, 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 August, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $334.

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

The cheapest day to depart from Rapid City to Illinois is on a Tuesday when prices can be found for as low as $454. Flights from Rapid City to Illinois on a Monday will generally be more expensive and average around $600. 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 afternoon. Flights from Rapid City to Illinois during this time can be as low as $457. Flights in the morning are often more expensive with an average ticket price of $486.

What is the cheapest Rapid City to Illinois flight route?

Fly from Rapid City to Chicago O'Hare Intl for the best Rapid City - Illinois flight prices

What cabin class options are available on Rapid City to Illinois flights?

There are 4 cabin classes available to choose from on Rapid City 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 Rapid City to Illinois flights?

No. A direct flight is the cheapest option for a flight between Rapid City to Illinois.

Cheap Rapid City to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rapid City to Illinois

Best Price Found	$220
Fastest flight time	2h 24m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Rapid City in the past 72 hours is $220. The best round-trip flight deal from Rapid City to Illinois found on momondo in the last 72 hours is $359.

The fastest flight from Rapid City to Illinois takes 2h 24m

Direct flights go from Rapid City to Illinois every day.

There are 98 airports in Illinois. From Rapid City there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

When did momondo last update prices for flights from Rapid City Airport to Illinois?
Prices for flights from Rapid City Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Rapid City Airport to Illinois?
As of March 2026, there are 3 operators available to choose from for flights from Rapid City Airport to Illinois.
How old do you have to be to fly from Rapid City Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rapid City Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Rapid City to Illinois?
Based on momondo bookings for flights between Rapid City and Illinois, the leading plane model is Embraer 175, making up 27.03% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 21.62%, Boeing 737-800 with 13.51%, and Canadair (Bombardier) Regional Jet 700 with 8.11%.

Best airlines flying from Rapid City to Illinois

Compare and see reviews for airlines that fly from Rapid City to Illinois with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $200	Free Cancellation	Rating 7.1 11,370 reviews		Search American Airlines flights
United Airlines	PriceFrom $219	Free Cancellation	Rating 7.4 9,370 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Rapid City to Illinois?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Rapid City.

Can I find flights from Rapid City to Illinois with flexible booking policies on momondo?

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

How can momondo help me find flights from Rapid City to Illinois?

Once all potential Rapid City 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 Rapid City to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Rapid City. 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.