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Rapid City

$182+ 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RAP
feb. 20 — feb. 271
vie. 2/20
vie. 2/27
1 adult, Economy
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Cheap 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 enero 21, 2026.

This American Airlines deal was found by Cheapflights users on 1/19. 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.
sáb. 8/294:20 pm
ORD
-
RAP
Nonstop2h 20m
American Airlines
sáb. 9/56:10 pm
RAP
-
ORD
Nonstop2h 19m
American Airlines
Deal found 1/19$209
This Delta deal was found by Cheapflights users on 1/18. 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. 3/63:59 pm
ORD
-
RAP
1 stop7h 28m
Delta
jue. 3/1211:03 am
RAP
-
ORD
1 stop5h 57m
Delta
Deal found 1/18$229
This Delta deal was found by Cheapflights users on 1/18. 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.
sáb. 3/72:05 pm
ORD
-
RAP
2 stops9h 22m
Delta
mar. 3/104:01 pm
RAP
-
ORD
1 stop4h 25m
Delta
Deal found 1/18$234
This Delta deal was found by Cheapflights users on 1/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/176:30 am
ORD
-
RAP
2 stops10h 14m
Delta
mar. 2/2410:54 am
RAP
-
ORD
2 stops8h 50m
Delta
Deal found 1/19$240
This Delta deal was found by Cheapflights users on 1/20. 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.
mar. 2/109:53 am
MDW
-
RAP
1 stop6h 32m
Delta
mar. 2/1710:54 am
RAP
-
MDW
1 stop6h 46m
Delta
Deal found 1/20$249
This Delta deal was found by Cheapflights users on 1/20. 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.
vie. 3/2012:15 pm
ORD
-
RAP
1 stop4h 03m
Delta
mar. 3/246:00 am
RAP
-
ORD
1 stop4h 35m
Delta
Deal found 1/20$249
This Delta deal was found by Cheapflights users on 1/18. 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. 3/66:51 pm
ORD
-
RAP
1 stop4h 36m
Delta
mié. 3/116:00 am
RAP
-
ORD
2 stops9h 43m
Delta
Deal found 1/18$254
This United Airlines deal was found by Cheapflights users on 1/20. 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.
dom. 8/97:35 pm
ORD
-
RAP
Nonstop2h 38m
United Airlines
lun. 8/175:48 pm
RAP
-
ORD
1 stop5h 09m
United Airlines
Deal found 1/20$255
This Delta deal was found by Cheapflights users on 1/18. 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. 3/66:30 am
ORD
-
RAP
2 stops10h 14m
Delta
mar. 3/106:00 am
RAP
-
ORD
2 stops11h 34m
Delta
Deal found 1/18$260
This United Airlines deal was found by Cheapflights users on 1/20. 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.
dom. 5/247:35 pm
ORD
-
RAP
Nonstop2h 38m
United Airlines
sáb. 5/304:30 pm
RAP
-
ORD
1 stop4h 55m
United Airlines
Deal found 1/20$263
This American Airlines deal was found by Cheapflights users on 1/19. 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. 5/79:40 am
ORD
-
RAP
Nonstop2h 34m
American Airlines
lun. 5/1111:44 am
RAP
-
ORD
Nonstop2h 26m
American Airlines
Deal found 1/19$264
This American Airlines deal was found by Cheapflights users on 1/20. 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.
vie. 8/214:20 pm
ORD
-
RAP
Nonstop2h 20m
American Airlines
dom. 8/306:10 pm
RAP
-
ORD
Nonstop2h 19m
American Airlines
Deal found 1/20$268

Find 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 enero 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$229
(Delta)

One-way from

$182
(Kiwi.com)

Popular in

November

Cheapest in

February

Average price

$388

Good round-trip deal

$209 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. 3% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Rapid City.
Search Deals

Cheapflights Fare Finder

 
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 enero 21, 2026.
Use the filters below to find and compare flights from Illinois to Rapid City that are best for you.

Fly from

Illinois

Fly to

Rapid City

Route

Depart

Return

Price

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

mié. 3/11

6:15 am-10:20 am

1 stop5h 05m

Rapid City

lun. 3/16

11:03 am-6:00 pm

1 stop5h 57m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

mié. 3/11

6:15 am-10:20 am

1 stop5h 05m

Rapid City

dom. 3/15

6:00 am-11:35 am

1 stop4h 35m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

lun. 3/9

6:15 am-10:20 am

1 stop5h 05m

Rapid City

lun. 3/16

11:03 am-6:00 pm

1 stop5h 57m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

mar. 3/10

6:15 am-10:20 am

1 stop5h 05m

Rapid City

dom. 3/15

6:00 am-11:35 am

1 stop4h 35m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

sáb. 2/14

6:15 am-10:05 am

1 stop4h 50m

Rapid City

mar. 2/17

4:29 pm-9:30 pm

1 stop4h 01m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

jue. 2/12

6:15 am-10:09 am

1 stop4h 54m

Rapid City

dom. 2/15

6:00 am-11:45 am

1 stop4h 45m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

lun. 3/9

6:15 am-10:20 am

1 stop5h 05m

Rapid City

dom. 3/15

6:00 am-11:35 am

1 stop4h 35m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

vie. 3/6

3:59 pm-10:27 pm

1 stop7h 28m

Rapid City

jue. 3/12

11:03 am-6:00 pm

1 stop5h 57m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

vie. 3/6

3:59 pm-10:27 pm

1 stop7h 28m

Rapid City

lun. 3/16

11:03 am-6:00 pm

1 stop5h 57m

$229

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

mar. 2/10

6:45 pm-10:28 pm

1 stop4h 43m

Rapid City

mar. 2/17

4:29 pm-9:30 pm

1 stop4h 01m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 45 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Rapid City

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 enero 21, 2026.

It’s optimal to fly from Illinois to Rapid City at noon. By choosing this option you can save up to 42% on the cost of your flight, compared to a flight in the evening.

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.

  • How long is the flight from Illinois to Rapid City?

    Airlines like Delta, United Airlines, and American Airlines fly from Illinois to Rapid City in about 5h 05m. The time it takes to get you to your destination can typically vary by up to 1h 12m. There are 777 mi between Illinois and Rapid City. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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, Lambert-St Louis - Rapid City or Chicago Midway - 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 (70%), United Airlines (70%) or Emirates (69%) 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 $329, our data shows the cheapest flight currently is $209. When looking at the most popular route, (Chicago O'Hare Intl - Rapid City), you can expect to pay $229 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.

See more FAQs

Traveling to a place near Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
Keystone
Deadwood
Sturgis
Spearfish

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Alternative routes for Illinois to Rapid City

See prices for flight routes from nearby airports that may be better suited for you.
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Seattle to Rapid City flights
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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 enero 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$208Average$413FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$209Average$365FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$298FlexibilityNo cancel feeOn-timeN/A

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