How many flights depart from Rapid City to Illinois on average per week?

42 flights are operational weekly from Rapid City to Illinois as of September 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

Delta and United Airlines are the most popular carriers operating from Rapid City to Illinois

How many flights depart from Rapid City to Illinois on average per day?

As of September 2026, there are 6 flights per day flying from Rapid City to Illinois. The most common time of day flights depart is 1:00PM, with 83% of flights taking off in the afternoon.

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 September 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.

$142 Cheap Flights from Rapid City to Illinois in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

6:00 am - 9:34 amRAP Rapid City-ORD Chicago O'Hare Intl

2h 34mnonstop

7:50 pm - 9:42 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 52mnonstop

$310United Airlines

Fri, Dec 11 - Sat, Dec 12

1:08 pm - 9:12 pmRAP Rapid City-ORD Chicago O'Hare Intl

7h 04m1 stop Dallas/Fort Worth

9:45 am - 11:23 amORD Chicago O'Hare Intl-RAP Rapid City

2h 38mnonstop

$311American Airlines

Wed, Jan 13 - Wed, May 5

5:50 pm - 11:59 pmRAP Rapid City-ORD Chicago O'Hare Intl

5h 09m1 stop Denver Intl

8:40 am - 10:31 amORD Chicago O'Hare Intl-RAP Rapid City

2h 51mnonstop

$311United Airlines

Wed, Nov 4 - Sat, Nov 7

1:30 pm - 5:03 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 33mnonstop

1:30 pm - 7:19 pmORD Chicago O'Hare Intl-RAP Rapid City

6h 49m1 stop Denver Intl

$311United Airlines

Sat, Oct 31 - Tue, Nov 3

6:00 am - 9:34 amRAP Rapid City-ORD Chicago O'Hare Intl

2h 34mnonstop

8:45 am - 1:03 pmORD Chicago O'Hare Intl-RAP Rapid City

5h 18m1 stop Denver Intl

$320United Airlines

Fri, Dec 11 - Sat, Dec 12

6:45 am - 2:55 pmRAP Rapid City-ORD Chicago O'Hare Intl

7h 10m1 stop Minneapolis St Paul

6:23 am - 10:23 amORD Chicago O'Hare Intl-RAP Rapid City

5h 00m1 stop Minneapolis St Paul

$321Delta

Tue, Nov 17 - Sat, Nov 21

6:45 am - 11:48 amRAP Rapid City-ORD Chicago O'Hare Intl

4h 03m1 stop Minneapolis St Paul

5:42 pm - 10:37 pmORD Chicago O'Hare Intl-RAP Rapid City

5h 55m1 stop Minneapolis St Paul

$321Delta

Sat, Nov 14 - Wed, Nov 18

6:11 am - 4:00 pmRAP Rapid City-ORD Chicago O'Hare Intl

8h 49m1 stop Dallas/Fort Worth

3:52 pm - 9:27 pmORD Chicago O'Hare Intl-RAP Rapid City

6h 35m1 stop Dallas/Fort Worth

$321American Airlines

Wed, Nov 4 - Sat, Nov 7

6:45 am - 2:55 pmRAP Rapid City-ORD Chicago O'Hare Intl

7h 10m1 stop Minneapolis St Paul

6:23 am - 10:23 amORD Chicago O'Hare Intl-RAP Rapid City

5h 00m1 stop Minneapolis St Paul

$321Delta

Wed, Nov 18 - Sat, Nov 21

10:24 am - 6:35 pmRAP Rapid City-ORD Chicago O'Hare Intl

7h 11m1 stop Dallas/Fort Worth

5:00 am - 12:39 pmORD Chicago O'Hare Intl-RAP Rapid City

8h 39m1 stop Dallas/Fort Worth

$321American Airlines

Sat, Oct 31 - Tue, Nov 3

Cheap last minute flights

Enter your travel dates to find the best prices.

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

5:00 am - 9:54 amORD Chicago O'Hare Intl-RAP Rapid City

5h 54m1 stop Dallas/Fort Worth

$384American Airlines

Mon, Sep 21 - Sun, Oct 18

5:48 pm - 11:59 pmRAP Rapid City-ORD Chicago O'Hare Intl

5h 11m1 stop Denver Intl

5:00 am - 9:28 amORD Chicago O'Hare Intl-RAP Rapid City

5h 28m1 stop Denver Intl

$394United Airlines

Mon, Sep 21 - Sun, Oct 18

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

5:00 am - 9:54 amORD Chicago O'Hare Intl-RAP Rapid City

5h 54m1 stop Dallas/Fort Worth

$412American Airlines

Fri, Sep 18 - Sun, Oct 18

4:56 pm - 12:14 amRAP Rapid City-ORD Chicago O'Hare Intl

6h 18m1 stop Dallas/Fort Worth

5:00 am - 12:21 pmORD Chicago O'Hare Intl-RAP Rapid City

8h 21m1 stop Dallas/Fort Worth

$422American Airlines

Fri, Sep 18 - Sun, Oct 18

6:07 pm - 12:27 amRAP Rapid City-STL Lambert-St Louis

5h 20m1 stop Chicago O'Hare Intl

7:27 am - 11:15 amSTL Lambert-St Louis-RAP Rapid City

4h 48m1 stop Chicago O'Hare Intl

$429American Airlines

Wed, Sep 23 - Sun, Sep 27

5:48 pm - 11:59 pmRAP Rapid City-ORD Chicago O'Hare Intl

5h 11m1 stop Denver Intl

5:00 am - 9:27 amORD Chicago O'Hare Intl-RAP Rapid City

5h 27m1 stop Denver Intl

$510United Airlines

Fri, Sep 18 - Mon, Sep 21

5:48 pm - 11:59 pmRAP Rapid City-ORD Chicago O'Hare Intl

5h 11m1 stop Denver Intl

8:59 am - 10:25 amORD Chicago O'Hare Intl-RAP Rapid City

2h 26mnonstop

$528United Airlines

Fri, Sep 18 - Mon, Sep 21

10:42 am - 6:19 pmRAP Rapid City-MDW Chicago Midway

6h 37m1 stop Minneapolis St Paul

7:13 pm - 10:18 pmMDW Chicago Midway-RAP Rapid City

4h 05m1 stop Minneapolis St Paul

$843Delta

Tue, Sep 22 - Fri, Sep 25

6:48 am - 6:33 pmRAP Rapid City-MDW Chicago Midway

10h 45m2 stops Minneapolis St Paul Detroit Metropolitan Wayne County

7:13 pm - 10:18 pmMDW Chicago Midway-RAP Rapid City

4h 05m1 stop Minneapolis St Paul

$884Delta

Tue, Sep 22 - Fri, Sep 25

6:48 am - 6:26 pmRAP Rapid City-ORD Chicago O'Hare Intl

10h 38m2 stops Minneapolis St Paul Detroit Metropolitan Wayne County

6:20 am - 10:45 amORD Chicago O'Hare Intl-RAP Rapid City

5h 25m1 stop Minneapolis St Paul

$1,004Delta

Fri, Sep 18 - Sun, Oct 18

Cheap direct flights

Enter your travel dates to find the best prices.

6:00 am - 9:34 amRAP Rapid City-ORD Chicago O'Hare Intl

2h 34mnonstop

7:50 pm - 9:42 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 52mnonstop

$310United Airlines

Fri, Dec 11 - Sat, Dec 12

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

4:00 pm - 5:37 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 37mnonstop

$339American Airlines

Fri, Oct 2 - Sun, Oct 4

12:36 pm - 4:10 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 34mnonstop

9:40 am - 11:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 35mnonstop

$339American Airlines

Thu, Oct 1 - Sun, Oct 4

1:30 pm - 5:03 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 33mnonstop

8:40 am - 10:31 amORD Chicago O'Hare Intl-RAP Rapid City

2h 51mnonstop

$353United Airlines

Thu, Oct 29 - Sun, Nov 1

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:47 am - 10:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$359United Airlines

Thu, Oct 1 - Tue, Oct 6

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:47 am - 10:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$359United Airlines

Fri, Oct 2 - Tue, Oct 6

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

9:40 am - 11:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 35mnonstop

$359American Airlines

Wed, Sep 30 - Sun, Oct 4

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

4:00 pm - 5:37 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 37mnonstop

$359American Airlines

Tue, Sep 29 - Sat, Oct 3

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

4:00 pm - 5:37 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 37mnonstop

$359American Airlines

Fri, Oct 2 - Sun, Oct 4

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:47 am - 10:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$381United Airlines

Tue, Oct 20 - Sat, Oct 24

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Delta flights from Rapid City to Illinois

Our best Delta deals on Rapid City to Illinois flight tickets

Delta

Nov 14

RAP6:45 amRapid City

4h 03m

1 stop

ORD11:48 amChicago O'Hare Intl

Nov 18

ORD5:42 pmChicago O'Hare Intl

5h 55m

1 stop

RAP10:37 pmRapid City

$321

Delta

Nov 14

RAP11:29 amRapid City

4h 10m

1 stop

MDW4:39 pmChicago Midway

Nov 23

MDW5:29 pmChicago Midway

6h 08m

1 stop

RAP10:37 pmRapid City

$330

Delta

Oct 23

RAP4:38 pmRapid City

3h 49m

1 stop

ORD9:27 pmChicago O'Hare Intl

Oct 25

ORD6:20 amChicago O'Hare Intl

5h 25m

1 stop

RAP10:45 amRapid City

$339

United Airlines flights from Rapid City to Illinois

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

United Airlines

Dec 11

RAP6:00 amRapid City

2h 34m

ORD9:34 amChicago O'Hare Intl

Dec 12

ORD7:50 pmChicago O'Hare Intl

2h 52m

RAP9:42 pmRapid City

$310

United Airlines

Oct 31

RAP1:30 pmRapid City

2h 33m

ORD5:03 pmChicago O'Hare Intl

Nov 3

ORD1:30 pmChicago O'Hare Intl

6h 49m

1 stop

RAP7:19 pmRapid City

$311

United Airlines

Dec 11

RAP6:00 amRapid City

2h 34m

ORD9:34 amChicago O'Hare Intl

Dec 12

ORD8:45 amChicago O'Hare Intl

5h 18m

1 stop

RAP1:03 pmRapid City

$320

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Fri 12/11

6:00 am-9:34 am

Nonstop2h 34m

Chicago O'Hare Intl

Sat 12/12

7:50 pm-9:42 pm

Nonstop2h 52m

$310

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Wed 1/13

1:08 pm-9:12 pm

1 stop7h 04m

Chicago O'Hare Intl

Wed 5/5

9:45 am-11:23 am

Nonstop2h 38m

$311

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Wed 11/4

5:50 pm-11:59 pm

1 stop5h 09m

Chicago O'Hare Intl

Sat 11/7

8:40 am-10:31 am

Nonstop2h 51m

$311

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Sat 10/31

1:30 pm-5:03 pm

Nonstop2h 33m

Chicago O'Hare Intl

Tue 11/3

1:30 pm-7:19 pm

1 stop6h 49m

$311

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Fri 12/11

6:00 am-9:34 am

Nonstop2h 34m

Chicago O'Hare Intl

Sat 12/12

8:45 am-1:03 pm

1 stop5h 18m

$320

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Tue 11/17

6:45 am-2:55 pm

1 stop7h 10m

Chicago O'Hare Intl

Sat 11/21

6:23 am-10:23 am

1 stop5h 00m

$321

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Sat 11/14

6:45 am-11:48 am

1 stop4h 03m

Chicago O'Hare Intl

Wed 11/18

5:42 pm-10:37 pm

1 stop5h 55m

$321

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Wed 11/4

6:11 am-4:00 pm

1 stop8h 49m

Chicago O'Hare Intl

Sat 11/7

3:52 pm-9:27 pm

1 stop6h 35m

$321

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Wed 11/18

6:45 am-2:55 pm

1 stop7h 10m

Chicago O'Hare Intl

Sat 11/21

6:23 am-10:23 am

1 stop5h 00m

$321

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Sat 10/31

10:24 am-6:35 pm

1 stop7h 11m

Chicago O'Hare Intl

Tue 11/3

5:00 am-12:39 pm

1 stop8h 39m

$321

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

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Rapid City is in April. Flight prices, which tend to average around $209, 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 April, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $298.

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 $452. Flights from Rapid City to Illinois on a Sunday will generally be more expensive and average around $609. 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 $486. Flights at noon are often more expensive with an average ticket price of $532.

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 54% 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	$142
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 $142. The best round-trip flight deal from Rapid City to Illinois found on momondo in the last 72 hours is $310.

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?
As of September 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 Boeing 737-900, making up 30.93% of the total bookings. Other popular models include Embraer 175 with 21.65%, Embraer 170 with 17.53%, and Canadair (Bombardier) Regional Jet 700 with 12.37%.

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 $187	Free Cancellation	Rating 7.1 12,080 reviews		Search American Airlines flights
United Airlines	PriceFrom $236	Free Cancellation	Rating 7.4 10,226 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.