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Cheap flights from Rapid City to Illinois from $127

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rapid City to Illinois departing on 6/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Rapid City to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 9:34 am
RAP
-
ORD
2h 34mnonstop
United Airlines Logo
8:45 am - 10:24 am
ORD
-
RAP
2h 39mnonstop
$191United Airlines
Sat, Aug 1 - Tue, Aug 4
United Airlines Logo
6:00 am - 9:34 am
RAP
-
ORD
2h 34mnonstop
United Airlines Logo
5:00 am - 9:20 am
ORD
-
RAP
5h 20m
1 stop
$201United Airlines
Sat, Aug 1 - Tue, Aug 4
American Airlines Logo
3:23 pm - 6:57 pm
RAP
-
ORD
2h 34mnonstop
American Airlines Logo
9:45 am - 11:19 am
ORD
-
RAP
2h 34mnonstop
$231American Airlines
Sat, May 23 - Tue, May 26
Delta Logo
4:33 pm - 9:20 pm
RAP
-
ORD
3h 47m
1 stop
Delta Logo
5:41 pm - 10:24 pm
ORD
-
RAP
5h 43m
1 stop
$232Delta
Wed, May 20 - Sun, May 24
United Airlines Logo
1:35 pm - 4:59 pm
RAP
-
ORD
2h 24mnonstop
United Airlines Logo
7:50 pm - 9:37 pm
ORD
-
RAP
2h 47mnonstop
$233United Airlines
Thu, May 21 - Sun, May 24
Delta Logo
6:50 am - 6:05 pm
RAP
-
ORD
10h 15m
2 stops
Delta Logo
5:41 pm - 10:24 pm
ORD
-
RAP
5h 43m
1 stop
$237Delta
Wed, May 20 - Sun, May 24
American Airlines Logo
5:01 pm - 12:42 am
RAP
-
ORD
6h 41m
1 stop
American Airlines Logo
9:45 am - 11:19 am
ORD
-
RAP
2h 34mnonstop
$241American Airlines
Sat, May 23 - Tue, May 26
United Airlines Logo
1:35 pm - 4:59 pm
RAP
-
ORD
2h 24mnonstop
United Airlines Logo
6:00 am - 12:29 pm
ORD
-
RAP
7h 29m
1 stop
$243United Airlines
Thu, May 21 - Sun, May 24
American Airlines Logo
5:01 pm - 12:42 am
RAP
-
ORD
6h 41m
1 stop
American Airlines Logo
3:02 pm - 9:33 pm
ORD
-
RAP
7h 31m
1 stop
$251American Airlines
Sat, May 23 - Tue, May 26
Delta Logo
11:13 am - 5:56 pm
RAP
-
MDW
5h 43m
1 stop
Delta Logo
7:13 pm - 10:23 pm
MDW
-
RAP
4h 10m
1 stop
$289Delta
Thu, May 7 - Sat, May 9

Delta flights from Rapid City to Illinois

Our best Delta deals on Rapid City to Illinois flight tickets
Delta
May 20
RAP4:33 pmRapid City
3h 47m
1 stop
ORD9:20 pmChicago O'Hare Intl
May 24
ORD5:41 pmChicago O'Hare Intl
5h 43m
1 stop
RAP10:24 pmRapid City
$232
Delta
May 20
RAP6:50 amRapid City
10h 15m
2 stops
ORD6:05 pmChicago O'Hare Intl
May 24
ORD5:41 pmChicago O'Hare Intl
5h 43m
1 stop
RAP10:24 pmRapid City
$237
Delta
May 7
RAP11:13 amRapid City
4h 38m
1 stop
ORD4:51 pmChicago O'Hare Intl
May 10
ORD6:24 amChicago O'Hare Intl
5h 08m
1 stop
RAP10:32 amRapid City
$289

United Airlines flights from Rapid City to Illinois

Our best United Airlines deals on Rapid City to Illinois flight tickets
United Airlines
Aug 1
RAP6:00 amRapid City
2h 34m
ORD9:34 amChicago O'Hare Intl
Aug 4
ORD8:45 amChicago O'Hare Intl
2h 39m
RAP10:24 amRapid City
$191
United Airlines
Aug 1
RAP6:00 amRapid City
2h 34m
ORD9:34 amChicago O'Hare Intl
Aug 4
ORD5:00 amChicago O'Hare Intl
5h 20m
1 stop
RAP9:20 amRapid City
$201
United Airlines
May 21
RAP1:35 pmRapid City
2h 24m
ORD4:59 pmChicago O'Hare Intl
May 25
ORD8:45 amChicago O'Hare Intl
2h 39m
RAP10:24 amRapid City
$233

momondo Fare Finder

 
Customize your flight search to find flights from Rapid City 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, momondo users made 832,500 searches. Data last updated April 17, 2026.
Use the filters below to find and compare flights from Rapid City to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Sat 8/1

6:00 am-9:34 am

Nonstop2h 34m

Chicago O'Hare Intl

Tue 8/4

8:45 am-10:24 am

Nonstop2h 39m

$191

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Sat 8/1

6:00 am-9:34 am

Nonstop2h 34m

Chicago O'Hare Intl

Tue 8/4

5:00 am-9:20 am

1 stop5h 20m

$201
Quickest round-trip

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Sat 5/23

3:23 pm-6:57 pm

Nonstop2h 34m

Chicago O'Hare Intl

Tue 5/26

9:45 am-11:19 am

Nonstop2h 34m

$231

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Wed 5/20

4:33 pm-9:20 pm

1 stop3h 47m

Chicago O'Hare Intl

Sun 5/24

5:41 pm-10:24 pm

1 stop5h 43m

$232

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Thu 5/21

1:35 pm-4:59 pm

Nonstop2h 24m

Chicago O'Hare Intl

Sun 5/24

7:50 pm-9:37 pm

Nonstop2h 47m

$233

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Wed 5/20

6:50 am-6:05 pm

2 stops10h 15m

Chicago O'Hare Intl

Sun 5/24

5:41 pm-10:24 pm

1 stop5h 43m

$237

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Sat 5/23

5:01 pm-12:42 am

1 stop6h 41m

Chicago O'Hare Intl

Tue 5/26

9:45 am-11:19 am

Nonstop2h 34m

$241

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Thu 5/21

1:35 pm-4:59 pm

Nonstop2h 24m

Chicago O'Hare Intl

Sun 5/24

6:00 am-12:29 pm

1 stop7h 29m

$243

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Sat 5/23

5:01 pm-12:42 am

1 stop6h 41m

Chicago O'Hare Intl

Tue 5/26

3:02 pm-9:33 pm

1 stop7h 31m

$251

Rapid CityChicago

RAP - MDW

RAPMDW

Rapid City

Thu 5/7

11:13 am-5:56 pm

1 stop5h 43m

Chicago Midway

Sat 5/9

7:13 pm-10:23 pm

1 stop4h 10m

$289

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

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

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Rapid City is in June. Flight prices, which tend to average around $249, 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 June, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $307.

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 Saturday when prices can be found for as low as $431. Flights from Rapid City to Illinois on a Sunday will generally be more expensive and average around $573. 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 $448. Flights at noon are often more expensive with an average ticket price of $468.

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?

You could potentially save up to 24% on your flight if you consider stops on a Rapid City to Illinois flight.

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

$228

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 $228. The best round-trip flight deal from Rapid City to Illinois found on momondo in the last 72 hours is $348.
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

Frequently asked questions about flying 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?

  • 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?

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 AirlinesPriceFrom $200Free CancellationRating
7.1
11,596 reviews
Search American Airlines flights
United AirlinesPriceFrom $230Free CancellationRating
7.4
9,604 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.

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