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

Delta, American Airlines, 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 June 2026, there are 8 flights per day flying from Rapid City to Illinois. The most common time of day flights depart is 1:00PM, with 63% of flights taking off in the afternoon.

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

58 flights are operational weekly from Rapid City to Illinois as of June 2026. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.

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 June 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.

$151 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.

1:35 pm - 4:59 pm

RAP

ORD

2h 24mnonstop

8:45 am - 10:24 am

ORD

RAP

2h 39mnonstop

$260United Airlines

Wed, Jul 15 - Mon, Jul 20

12:47 pm - 4:16 pm

RAP

ORD

2h 29mnonstop

5:00 am - 9:47 am

ORD

RAP

5h 47m

1 stop

$261American Airlines

Tue, Jun 30 - Sat, Jul 18

1:35 pm - 4:59 pm

RAP

ORD

2h 24mnonstop

9:30 pm - 11:16 pm

ORD

RAP

2h 46mnonstop

$269United Airlines

Thu, Jul 2 - Mon, Jul 6

1:35 pm - 4:59 pm

RAP

ORD

2h 24mnonstop

5:00 am - 9:20 am

ORD

RAP

5h 20m

1 stop

$270United Airlines

Sat, Jul 4 - Sun, Jul 5

4:28 pm - 9:25 pm

RAP

ORD

3h 57m

1 stop

6:25 pm - 10:26 pm

ORD

RAP

5h 01m

1 stop

$271Delta

Tue, Jun 30 - Sat, Jul 18

6:48 am - 1:09 pm

RAP

MDW

5h 21m

1 stop

6:55 pm - 10:26 pm

MDW

RAP

4h 31m

1 stop

$271Delta

Tue, Jun 30 - Sat, Jul 18

4:36 pm - 11:19 pm

RAP

ORD

5h 43m

1 stop

8:45 am - 10:24 am

ORD

RAP

2h 39mnonstop

$279United Airlines

Thu, Jul 2 - Mon, Jul 6

2:31 pm - 9:52 pm

RAP

ORD

6h 21m

1 stop

6:30 am - 10:18 am

ORD

RAP

4h 48m

1 stop

$280Delta

Wed, Jul 15 - Mon, Jul 20

6:00 am - 9:34 am

RAP

ORD

2h 34mnonstop

9:30 pm - 11:16 pm

ORD

RAP

2h 46mnonstop

$282United Airlines

Mon, Jul 20 - Tue, Jul 21

12:41 pm - 7:36 pm

RAP

STL

5h 55m

1 stop

5:32 am - 9:47 am

STL

RAP

5h 15m

1 stop

$324American Airlines

Wed, Jun 24 - Wed, Jul 8

Delta flights from Rapid City to Illinois

Our best Delta deals on Rapid City to Illinois flight tickets

Delta

Jun 30

RAP4:28 pmRapid City

3h 57m

1 stop

ORD9:25 pmChicago O'Hare Intl

Jul 18

ORD6:25 pmChicago O'Hare Intl

5h 01m

1 stop

RAP10:26 pmRapid City

$271

Delta

Jul 15

RAP2:31 pmRapid City

6h 21m

1 stop

ORD9:52 pmChicago O'Hare Intl

Jul 20

ORD6:30 amChicago O'Hare Intl

4h 48m

1 stop

RAP10:18 amRapid City

$280

Delta

Jul 2

RAP6:48 amRapid City

7h 17m

1 stop

ORD3:05 pmChicago O'Hare Intl

Jul 6

ORD5:57 pmChicago O'Hare Intl

5h 40m

1 stop

RAP10:37 pmRapid City

$289

American Airlines flights from Rapid City to Illinois

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

American Airlines

Jun 30

RAP12:47 pmRapid City

2h 29m

ORD4:16 pmChicago O'Hare Intl

Jul 18

ORD5:00 amChicago O'Hare Intl

5h 47m

1 stop

RAP9:47 amRapid City

$261

American Airlines

Jun 25

RAP5:00 pmRapid City

6h 39m

1 stop

ORD12:39 amChicago O'Hare Intl

Jun 28

ORD9:45 amChicago O'Hare Intl

2h 29m

RAP11:14 amRapid City

$299

American Airlines

Jun 25

RAP12:47 pmRapid City

2h 29m

ORD4:16 pmChicago O'Hare Intl

Jun 28

ORD9:45 amChicago O'Hare Intl

2h 29m

RAP11:14 amRapid City

$309

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Wed 7/15

1:35 pm-4:59 pm

Nonstop2h 24m

Chicago O'Hare Intl

Mon 7/20

8:45 am-10:24 am

Nonstop2h 39m

$260

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Tue 6/30

12:47 pm-4:16 pm

Nonstop2h 29m

Chicago O'Hare Intl

Sat 7/18

5:00 am-9:47 am

1 stop5h 47m

$261

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Thu 7/2

1:35 pm-4:59 pm

Nonstop2h 24m

Chicago O'Hare Intl

Mon 7/6

9:30 pm-11:16 pm

Nonstop2h 46m

$269

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Sat 7/4

1:35 pm-4:59 pm

Nonstop2h 24m

Chicago O'Hare Intl

Sun 7/5

5:00 am-9:20 am

1 stop5h 20m

$270

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Tue 6/30

4:28 pm-9:25 pm

1 stop3h 57m

Chicago O'Hare Intl

Sat 7/18

6:25 pm-10:26 pm

1 stop5h 01m

$271

Rapid CityChicago

RAP - MDW

RAPMDW

Rapid City

Tue 6/30

6:48 am-1:09 pm

1 stop5h 21m

Chicago Midway

Sat 7/18

6:55 pm-10:26 pm

1 stop4h 31m

$271

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Thu 7/2

4:36 pm-11:19 pm

1 stop5h 43m

Chicago O'Hare Intl

Mon 7/6

8:45 am-10:24 am

Nonstop2h 39m

$279

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Wed 7/15

2:31 pm-9:52 pm

1 stop6h 21m

Chicago O'Hare Intl

Mon 7/20

6:30 am-10:18 am

1 stop4h 48m

$280

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Mon 7/20

6:00 am-9:34 am

Nonstop2h 34m

Chicago O'Hare Intl

Tue 7/21

9:30 pm-11:16 pm

Nonstop2h 46m

$282

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Wed 6/24

12:41 pm-7:36 pm

1 stop5h 55m

Lambert-St Louis

Wed 7/8

5:32 am-9:47 am

1 stop5h 15m

$324

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 $187, 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 July is also cheap. Prices for this month can be found on momondo for an average of $190.

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 $442. Flights from Rapid City to Illinois on a Sunday will generally be more expensive and average around $611. 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 $464. Flights at noon are often more expensive with an average ticket price of $479.

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.

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	$251
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 $251. The best round-trip flight deal from Rapid City to Illinois found on momondo in the last 72 hours is $391.

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 June 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 (Enhanced Winglets), making up 26.67% of the total bookings. Other popular models include Embraer 175 with 23.70%, Boeing 737-900 with 17.78%, and Embraer 170 with 17.78%.

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 11,644 reviews		Search American Airlines flights
United Airlines	PriceFrom $219	Free Cancellation	Rating 7.4 9,775 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.