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

21 flights are operational weekly from Rapid City to Illinois as of November 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?

American Airlines, Delta, and Allegiant Air 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 November 2026, there are 3 flights per day flying from Rapid City to Illinois. The most common time of day flights depart is 1:00PM, with 100% 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 November 2026, there are 2 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.

$263 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 - 9:39 amRAP Rapid City-ORD Chicago O'Hare Intl

2h 39mnonstop

7:52 pm - 9:45 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 53mnonstop

$339United Airlines

Fri, Mar 19 - Mon, Mar 22

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

$339United Airlines

Thu, Dec 10 - Tue, Dec 15

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

$339United Airlines

Thu, Dec 3 - Sun, Dec 6

5:00 am - 11:19 amRAP Rapid City-ORD Chicago O'Hare Intl

5h 19m1 stop Denver Intl

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

2h 52mnonstop

$349United Airlines

Thu, Dec 3 - Sun, Dec 6

1:09 pm - 11:04 pmRAP Rapid City-ORD Chicago O'Hare Intl

8h 55m1 stop Dallas/Fort Worth

3:04 pm - 9:32 pmORD Chicago O'Hare Intl-RAP Rapid City

7h 28m1 stop Dallas/Fort Worth

$355American Airlines

Thu, Dec 10 - Tue, Dec 15

1:09 pm - 11:04 pmRAP Rapid City-ORD Chicago O'Hare Intl

8h 55m1 stop Dallas/Fort Worth

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

8h 39m1 stop Dallas/Fort Worth

$359American Airlines

Thu, Dec 3 - Sun, Dec 6

4:00 pm - 9:37 pmRAP Rapid City-ORD Chicago O'Hare Intl

4h 37m1 stop Minneapolis St Paul

6:00 am - 11:12 amORD Chicago O'Hare Intl-RAP Rapid City

6h 12m1 stop Minneapolis St Paul

$359Delta

Fri, Mar 19 - Mon, Mar 22

2:40 pm - 9:35 pmRAP Rapid City-ORD Chicago O'Hare Intl

5h 55m1 stop Minneapolis St Paul

6:20 am - 10:38 amORD Chicago O'Hare Intl-RAP Rapid City

5h 18m1 stop Minneapolis St Paul

$359Delta

Thu, Dec 3 - Sun, Dec 6

6:42 am - 11:59 amRAP Rapid City-MDW Chicago Midway

4h 17m1 stop Minneapolis St Paul

10:24 am - 2:00 pmMDW Chicago Midway-RAP Rapid City

4h 36m1 stop Minneapolis St Paul

$359Delta

Thu, Dec 3 - Sun, Dec 6

6:00 am - 2:12 pmRAP Rapid City-ORD Chicago O'Hare Intl

7h 12m1 stop Dallas/Fort Worth

6:00 am - 12:42 pmORD Chicago O'Hare Intl-RAP Rapid City

7h 42m1 stop Dallas/Fort Worth

$442American Airlines

Thu, Dec 31 - Fri, Jan 1

Cheap last minute flights

Enter your travel dates to find the best prices.

6:39 am - 2:36 pmRAP Rapid City-ORD Chicago O'Hare Intl

6h 57m1 stop Minneapolis St Paul

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

5h 00m1 stop Minneapolis St Paul

$453Delta

Sat, Nov 7 - Mon, Nov 9

6:39 am - 11:47 amRAP Rapid City-MDW Chicago Midway

4h 08m1 stop Minneapolis St Paul

10:34 am - 3:54 pmMDW Chicago Midway-RAP Rapid City

6h 20m1 stop Minneapolis St Paul

$453Delta

Sat, Nov 7 - Mon, Nov 9

6:39 am - 4:26 pmRAP Rapid City-ORD Chicago O'Hare Intl

8h 47m2 stops Minneapolis St Paul Detroit Metropolitan Wayne County

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

5h 00m1 stop Minneapolis St Paul

$458Delta

Sat, Nov 7 - Mon, Nov 9

6:39 am - 6:00 pmRAP Rapid City-MDW Chicago Midway

10h 21m2 stops Minneapolis St Paul Detroit Metropolitan Wayne County

5:29 pm - 10:41 pmMDW Chicago Midway-RAP Rapid City

6h 12m1 stop Minneapolis St Paul

$458Delta

Sat, Nov 7 - Mon, Nov 9

1:09 pm - 10:30 pmRAP Rapid City-ORD Chicago O'Hare Intl

8h 21m1 stop Dallas/Fort Worth

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

6h 35m1 stop Dallas/Fort Worth

$486American Airlines

Sat, Nov 7 - Mon, Nov 9

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

$509United Airlines

Fri, Nov 6 - Sun, Nov 8

4:00 pm - 11:59 pmRAP Rapid City-ORD Chicago O'Hare Intl

6h 59m1 stop Denver Intl

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

2h 51mnonstop

$519United Airlines

Fri, Nov 6 - Sun, Nov 8

1:09 pm - 10:30 pmRAP Rapid City-ORD Chicago O'Hare Intl

8h 21m1 stop Dallas/Fort Worth

6:00 am - 12:39 pmORD Chicago O'Hare Intl-RAP Rapid City

7h 39m1 stop Dallas/Fort Worth

$535American Airlines

Fri, Nov 6 - Sun, Nov 8

1:09 pm - 8:00 pmRAP Rapid City-ORD Chicago O'Hare Intl

5h 51m1 stop Dallas/Fort Worth

1:44 pm - 9:27 pmORD Chicago O'Hare Intl-RAP Rapid City

8h 43m1 stop Dallas/Fort Worth

$537American Airlines

Wed, Nov 11 - Thu, Nov 12

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

$607United Airlines

Wed, Nov 11 - Thu, Nov 12

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

$339United Airlines

Thu, Dec 3 - Sun, Dec 6

6:00 am - 9:39 amRAP Rapid City-ORD Chicago O'Hare Intl

2h 39mnonstop

7:52 pm - 9:45 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 53mnonstop

$339United Airlines

Fri, Mar 19 - Mon, Mar 22

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

$339United Airlines

Thu, Dec 10 - Tue, Dec 15

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

$379United Airlines

Thu, Nov 19 - Mon, Nov 23

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

$379United Airlines

Thu, Nov 19 - Sun, Nov 22

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

$379United Airlines

Wed, Nov 18 - Sun, Nov 22

1:32 pm - 4:53 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 21mnonstop

8:40 am - 10:32 amORD Chicago O'Hare Intl-RAP Rapid City

2h 52mnonstop

$400United Airlines

Fri, Dec 25 - Mon, Dec 28

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

$439United Airlines

Tue, Dec 1 - Tue, Dec 8

1:32 pm - 4:53 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 21mnonstop

8:40 am - 10:32 amORD Chicago O'Hare Intl-RAP Rapid City

2h 52mnonstop

$440United Airlines

Thu, Dec 31 - Fri, Jan 1

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

$441United Airlines

Thu, Dec 3 - Sun, Dec 6

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American Airlines flights from Rapid City to Illinois

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

American Airlines

Dec 10

RAP1:09 pmRapid City

8h 55m

1 stop

ORD11:04 pmChicago O'Hare Intl

Dec 15

ORD3:04 pmChicago O'Hare Intl

7h 28m

1 stop

RAP9:32 pmRapid City

$355

American Airlines

Dec 31

RAP6:00 amRapid City

7h 12m

1 stop

ORD2:12 pmChicago O'Hare Intl

Jan 1

ORD6:00 amChicago O'Hare Intl

7h 42m

1 stop

RAP12:42 pmRapid City

$442

American Airlines

Nov 7

RAP1:09 pmRapid City

8h 21m

1 stop

ORD10:30 pmChicago O'Hare Intl

Nov 9

ORD3:52 pmChicago O'Hare Intl

6h 35m

1 stop

RAP9:27 pmRapid City

$486

Delta flights from Rapid City to Illinois

Our best Delta deals on Rapid City to Illinois flight tickets

Delta

Dec 3

RAP2:40 pmRapid City

5h 55m

1 stop

ORD9:35 pmChicago O'Hare Intl

Dec 6

ORD6:20 amChicago O'Hare Intl

5h 18m

1 stop

RAP10:38 amRapid City

$359

Delta

Mar 19

RAP6:55 amRapid City

8h 42m

2 stops

ORD4:37 pmChicago O'Hare Intl

Mar 22

ORD9:30 amChicago O'Hare Intl

7h 16m

1 stop

RAP3:46 pmRapid City

$364

Delta

Dec 10

RAP6:42 amRapid City

4h 17m

1 stop

MDW11:59 amChicago Midway

Dec 15

MDW12:39 pmChicago Midway

4h 14m

1 stop

RAP3:53 pmRapid City

$369

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Fri 3/19

6:00 am-9:39 am

Nonstop2h 39m

Chicago O'Hare Intl

Mon 3/22

7:52 pm-9:45 pm

Nonstop2h 53m

$339

Quickest round-trip

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Thu 12/10

6:00 am-9:34 am

Nonstop2h 34m

Chicago O'Hare Intl

Tue 12/15

7:50 pm-9:42 pm

Nonstop2h 52m

$339

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Thu 12/3

6:00 am-9:34 am

Nonstop2h 34m

Chicago O'Hare Intl

Sun 12/6

7:50 pm-9:42 pm

Nonstop2h 52m

$339

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Thu 12/3

5:00 am-11:19 am

1 stop5h 19m

Chicago O'Hare Intl

Sun 12/6

7:50 pm-9:42 pm

Nonstop2h 52m

$349

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Thu 12/10

1:09 pm-11:04 pm

1 stop8h 55m

Chicago O'Hare Intl

Tue 12/15

3:04 pm-9:32 pm

1 stop7h 28m

$355

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Thu 12/3

1:09 pm-11:04 pm

1 stop8h 55m

Chicago O'Hare Intl

Sun 12/6

5:00 am-12:39 pm

1 stop8h 39m

$359

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Fri 3/19

4:00 pm-9:37 pm

1 stop4h 37m

Chicago O'Hare Intl

Mon 3/22

6:00 am-11:12 am

1 stop6h 12m

$359

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Thu 12/3

2:40 pm-9:35 pm

1 stop5h 55m

Chicago O'Hare Intl

Sun 12/6

6:20 am-10:38 am

1 stop5h 18m

$359

Rapid CityChicago

RAP Rapid City - MDW Chicago Midway

RAPMDW

Rapid City

Thu 12/3

6:42 am-11:59 am

1 stop4h 17m

Chicago Midway

Sun 12/6

10:24 am-2:00 pm

1 stop4h 36m

$359

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Thu 12/31

6:00 am-2:12 pm

1 stop7h 12m

Chicago O'Hare Intl

Fri 1/1

6:00 am-12:42 pm

1 stop7h 42m

$442

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 August is also cheap. Prices for this month can be found on momondo for an average of $306.

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 $457. 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 $484. Flights at noon are often more expensive with an average ticket price of $548.

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 29% 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	$263
Fastest flight time	2h 21m
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 $263. The best round-trip flight deal from Rapid City to Illinois found on momondo in the last 72 hours is $339.

The fastest flight from Rapid City to Illinois takes 2h 21m

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 November 2026, there are 2 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 31.25% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet 700 with 18.75%, Embraer 175 with 17.50%, and Embraer 175 (Enhanced Winglets) with 11.25%.

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 7.0 12,231 reviews		Search American Airlines flights
United Airlines	PriceFrom $236	Free Cancellation	Rating 7.3 10,458 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.