HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Rapid City

$99+ Cheap flights from Illinois to Rapid City (RAP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RAP
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Rapid City with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Rapid City

Keep the following information in mind while searching for Illinois to Rapid City flight deals. Data was last updated febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$209
(American Airlines)

One-way from

$99
(Mytrip)

Popular in

May

Cheapest in

February

Average price

$218

Good round-trip deal

$357 or less

Good one-way deal

$258 or less
Provider with most accurate pricing for Chicago (CHI)-Rapid City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Rapid City flights.
Search Deals
From Illinois to Rapid City
Search Deals
One-way flight from Illinois to Rapid City
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Rapid City.
Search Deals
Price to beat on a one-way flight from Illinois to Rapid City.
Search Deals

Find flight deals from Illinois to Rapid City

Cheapest flights from Illinois to Rapid City
Explore the most affordable flight options available from Illinois to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/611:40 amORD - RAP
Nonstop2h 19mAmerican Airlines
lun. 8/116:02 pmRAP - ORD
Nonstop2h 13mAmerican Airlines
Deal found 2/20$209
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/2210:20 amORD - RAP
1 stop6h 16mDelta
sáb. 3/2911:45 amRAP - ORD
1 stop4h 43mDelta
Deal found 2/20$229
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/2510:25 amMDW - RAP
1 stop6h 11mDelta
mar. 4/111:45 amRAP - MDW
1 stop5h 33mDelta
Deal found 2/18$229
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 6/285:00 amORD - RAP
1 stop5h 04mUnited Airlines
sáb. 7/55:30 amRAP - ORD
1 stop4h 50mUnited Airlines
Deal found 2/20$248
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/411:19 amSTL - RAP
1 stop5h 16mDelta
mar. 4/811:45 amRAP - STL
1 stop4h 04mDelta
Deal found 2/18$249
This American Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/147:42 amSTL - RAP
1 stop6h 17mAmerican Airlines
mar. 8/194:42 pmRAP - STL
1 stop4h 48mAmerican Airlines
Deal found 2/19$284
This Mytrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/67:00 amORD - RAP
2 stops27h 13mMultiple Airlines
dom. 4/135:40 pmRAP - ORD
1 stop19h 23mMultiple Airlines
Deal found 2/20$388
This American Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/66:23 amPIA - RAP
1 stop6h 31mAmerican Airlines
lun. 3/1012:25 pmRAP - PIA
1 stop7h 53mAmerican Airlines
Deal found 2/19$394
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/49:39 amSTL - RAP
2 stops10h 15mUnited Airlines
mar. 4/85:55 pmRAP - STL
2 stops20h 52mUnited Airlines
Deal found 2/19$394
This Mytrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/710:54 amMDW - RAP
2 stops34h 23mAllegiant Air
jue. 3/131:13 pmRAP - MDW
2 stops19h 56mAllegiant Air
Deal found 2/19$462
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/75:18 pmPIA - RAP
2 stops17h 05mUnited Airlines
mar. 3/1111:45 amRAP - PIA
2 stops8h 54mUnited Airlines
Deal found 2/20$493
This American Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/216:34 amBMI - RAP
1 stop6h 21mAmerican Airlines
vie. 3/2812:25 pmRAP - BMI
1 stop8h 03mAmerican Airlines
Deal found 2/19$904

Find flights from Illinois to Rapid City within your budget

Customize your flight search to find flights from Illinois to Rapid City 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, Cheapflights users made 2,558,603 searches. Data last updated febrero 20, 2025.

Fly from

Illinois

Fly to

Rapid City

Route

Depart

Return

Price

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

sáb. 3/22

10:20 am-3:36 pm

1 stop6h 16m

Rapid City

sáb. 3/29

11:45 am-5:28 pm

1 stop4h 43m

$229

ChicagoRapid City

MDW - RAP

MDWRAP

Chicago Midway

mar. 3/25

10:25 am-3:36 pm

1 stop6h 11m

Rapid City

mar. 4/1

11:45 am-6:18 pm

1 stop5h 33m

$229

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

vie. 4/4

11:19 am-3:35 pm

1 stop5h 16m

Rapid City

mar. 4/8

11:45 am-4:49 pm

1 stop4h 04m

$249

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

jue. 4/3

9:15 am-10:52 am

Nonstop2h 37m

Rapid City

lun. 4/7

1:00 pm-4:28 pm

Nonstop2h 28m

$254

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

jue. 8/14

7:42 am-12:59 pm

1 stop6h 17m

Rapid City

mar. 8/19

4:42 pm-10:30 pm

1 stop4h 48m

$284

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

dom. 4/6

7:00 am-9:13 am

2 stops27h 13m

Rapid City

dom. 4/13

5:40 pm-2:03 pm

1 stop19h 23m

$388

PeoriaRapid City

PIA - RAP

PIARAP

Greater Peoria

jue. 3/6

6:23 am-11:54 am

1 stop6h 31m

Rapid City

lun. 3/10

12:25 pm-9:18 pm

1 stop7h 53m

$394

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

vie. 4/4

9:39 am-6:54 pm

2 stops10h 15m

Rapid City

mar. 4/8

5:55 pm-3:47 pm

2 stops20h 52m

$394

ChicagoRapid City

MDW - RAP

MDWRAP

Chicago Midway

vie. 3/7

10:54 am-8:17 pm

2 stops34h 23m

Rapid City

jue. 3/13

1:13 pm-10:09 am

2 stops19h 56m

$462

PeoriaRapid City

PIA - RAP

PIARAP

Greater Peoria

vie. 3/7

5:18 pm-9:23 am

2 stops17h 05m

Rapid City

mar. 3/11

11:45 am-9:39 pm

2 stops8h 54m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Illinois to Rapid City

Have a flexible travel schedule? Discover the best time to fly to Rapid City from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Illinois to Rapid City

Get recent, data-driven insights about flights from Illinois to Rapid City including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Illinois to Rapid City?

Currently, January is the cheapest month in which you can book a flight from Illinois to Rapid City (average of $348). Flying from Illinois to Rapid City in May is currently the most expensive (average of $594). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to RAP?

Find hourly flight availability from Illinois to Rapid City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Rapid City as you normally would.

Rainfall in Rapid City by month

Plan your trip to Rapid City by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Rapid City ranges from 0.3 - 3.2 inches per month. May is typically the wettest month, when rainfall can reach 3.2 in. January is typically the driest time to visit Rapid City when rainfall is around 0.3 in.

Temperature in Rapid City by month

Plan your trip to Rapid City by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Rapid City, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

Reviews of airlines servicing Rapid City

Get insights into the airlines that provide service to Rapid City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Rapid City. Reviews last updated febrero 20, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and Allegiant Air from Illinois to Rapid City to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Allegiant Air
7.3
Good
765 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Illinois to Rapid City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Rapid City from Illinois?

    Most people fly into Rapid City (RAP) if they book a flight to Rapid City from Illinois. Rapid City is conveniently located just 9.0 mi from Rapid City’s city center.

  • What are the cheapest airlines to fly from Illinois to Rapid City one-way?

    One-way options have recently been found by users for as low as $175 on Delta. Other airlines that offer cheap prices include Allegiant Air from $208 and United Airlines from $224 one-way.

  • What are the most popular routes from Illinois to Rapid City?

    When deciding which route to take from Illinois to Rapid City consider Chicago O'Hare Intl - Rapid City, Chicago Midway - Rapid City or Lambert-St Louis - Rapid City as they are the most popular.

  • What are the most reliable airlines from Illinois to Rapid City?

    No one likes to see their flight delayed. When booking a flight from Illinois to Rapid City consider choosing SkyWest Airlines (61%), Emirates (61%) or United Airlines (61%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Rapid City?

    While on average a flight from Illinois to Rapid City is generally $406, our data shows the cheapest flight currently is $257. When looking at the most popular route, (Chicago O'Hare Intl - Rapid City), you can expect to pay $209 for that flight.

  • Can I find deals for flights from Illinois to Rapid City that include hotel bookings?

    Yes. In addition to deals on Illinois to Rapid City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Rapid City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Rapid City.

  • Can I find deals for business class flights from Illinois to Rapid City?

    Yes. Cheapflights offers flight deals from Illinois to Rapid City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Rapid City?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Rapid City (average of $348). Flying from Illinois to Rapid City in May is currently the most expensive (average of $594). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Deadwood
Spearfish
Keystone
Sturgis
Wall

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Rapid City

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Rapid City flights
Dulles Intl to Sioux Falls flights
Minneapolis to Rapid City flights
Baltimore to Sioux Falls flights
Denver to Sioux Falls flights
John F Kennedy Intl to Rapid City flights
O'Hare Intl to Sioux Falls flights
LaGuardia to Rapid City flights
Reagan-National to Sioux Falls flights
Los Angeles to Rapid City flights
O'Hare Intl to Rapid City flights
Columbus to Sioux Falls flights
Seattle to Sioux Falls flights
Dallas/Fort Worth to Sioux Falls flights
Baltimore to Rapid City flights
Seattle to Rapid City flights
Dulles Intl to Rapid City flights
Hartford to Rapid City flights
Ontario to Sioux Falls flights
Portland to Sioux Falls flights
Mobile to Sioux Falls flights
Raleigh to Sioux Falls flights
Dallas/Fort Worth to Rapid City flights
Austin to Sioux Falls flights
Pittsburgh to Rapid City flights
San Francisco to Sioux Falls flights
Philadelphia to Sioux Falls flights
San Francisco to Rapid City flights
Philadelphia to Rapid City flights
Boston to Rapid City flights
Raleigh to Rapid City flights
Pittsburgh to Sioux Falls flights
Reagan-National to Rapid City flights
Orlando to Rapid City flights
Detroit to Rapid City flights
Charlotte to Rapid City flights
Tampa to Rapid City flights
Los Angeles to Sioux Falls flights
Denver to Rapid City flights
Newark to Sioux Falls flights
Ontario to Rapid City flights
Hobby to Sioux Falls flights
Atlanta to Rapid City flights
Harrisburg to Rapid City flights
John F Kennedy Intl to Sioux Falls flights
Indianapolis to Sioux Falls flights
Minneapolis to Sioux Falls flights
Sacramento to Sioux Falls flights
Atlanta to Sioux Falls flights
Allentown to Rapid City flights

Top 3 airlines flying from Illinois to Rapid City

Discover the top 3 airlines that operate flights from Illinois to Rapid City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$218Average$404FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$220Average$569FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$244Average$388FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.