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Rapid City

$106+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RAP
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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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 junio 12, 2025.

Round-trip from

$191
(American Airlines)

One-way from

$106
(Mytrip)

Popular in

April

Cheapest in

February

Average price

$373

Good round-trip deal

$239 or less

Good one-way deal

$223 or less
From Illinois to Rapid City
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One-way flight from Illinois to Rapid City
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Highest demand for flights based on searches. 17% potential increase in price ($70 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Illinois to Rapid City.
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Price to beat on a one-way flight from Illinois to Rapid City.
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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 junio 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/10. 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.
lun. 7/144:13 pmORD - RAP
Nonstop2h 18mAmerican Airlines
vie. 7/186:01 pmRAP - ORD
Nonstop2h 17mAmerican Airlines
Deal found 6/10$191
This United Airlines deal was found by Cheapflights users on 6/10. 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.
lun. 7/148:45 amORD - RAP
Nonstop2h 35mUnited Airlines
vie. 7/185:59 pmRAP - ORD
1 stop5h 31mUnited Airlines
Deal found 6/10$201
This Delta deal was found by Cheapflights users on 6/10. 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. 7/262:00 pmORD - RAP
2 stops9h 31mDelta
sáb. 8/210:53 amRAP - ORD
1 stop4h 57mDelta
Deal found 6/10$244
This United Airlines deal was found by Cheapflights users on 6/10. 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.
mié. 8/65:00 amSTL - RAP
1 stop6h 20mUnited Airlines
sáb. 8/3011:18 amRAP - STL
1 stop4h 15mUnited Airlines
Deal found 6/10$249
This Delta deal was found by Cheapflights users on 6/10. 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.
mié. 8/65:37 pmSTL - RAP
1 stop5h 54mDelta
sáb. 8/3010:55 amRAP - STL
2 stops10h 00mDelta
Deal found 6/10$254
This Mytrip deal was found by Cheapflights users on 6/11. 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.
jue. 7/107:08 amORD - RAP
1 stop15h 01mMultiple Airlines
dom. 7/139:49 pmRAP - ORD
2 stops34h 06mMultiple Airlines
Deal found 6/11$269
This Mytrip deal was found by Cheapflights users on 6/10. 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. 7/117:00 amORD - RAP
1 stop10h 09mSun Country Air
lun. 7/145:27 pmRAP - ORD
1 stop18h 01mSun Country Air
Deal found 6/10$274
This Delta deal was found by Cheapflights users on 6/11. 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.
mié. 9/37:17 pmMDW - RAP
1 stop4h 15mDelta
lun. 9/154:35 pmRAP - MDW
2 stops18h 57mDelta
Deal found 6/11$282
This American Airlines deal was found by Cheapflights users on 6/10. 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. 8/147:23 amSTL - RAP
1 stop11h 19mAmerican Airlines
mar. 8/196:04 pmRAP - STL
1 stop18h 08mAmerican Airlines
Deal found 6/10$286
This American Airlines deal was found by Cheapflights users on 6/11. 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.
lun. 8/43:51 pmBMI - RAP
1 stop6h 15mAmerican Airlines
vie. 8/86:12 pmRAP - BMI
1 stop4h 29mAmerican Airlines
Deal found 6/11$301
This United Airlines deal was found by Cheapflights users on 6/12. 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. 7/125:25 pmPIA - RAP
1 stop5h 21mUnited Airlines
sáb. 7/197:00 amRAP - PIA
2 stops7h 03mUnited Airlines
Deal found 6/12$342
This United Airlines deal was found by Cheapflights users on 6/11. 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. 6/279:05 amMLI - RAP
1 stop4h 41mUnited Airlines
jue. 7/31:43 pmRAP - MLI
1 stop6h 54mUnited Airlines
Deal found 6/11$349

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 junio 12, 2025.
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

lun. 7/14

4:13 pm-5:31 pm

Nonstop2h 18m

Rapid City

vie. 7/18

6:01 pm-9:18 pm

Nonstop2h 17m

$191

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

lun. 7/14

8:45 am-10:20 am

Nonstop2h 35m

Rapid City

vie. 7/18

5:59 pm-12:30 am

1 stop5h 31m

$201

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

sáb. 7/26

2:00 pm-10:31 pm

2 stops9h 31m

Rapid City

sáb. 8/2

10:53 am-4:50 pm

1 stop4h 57m

$244

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

mié. 8/6

5:00 am-10:20 am

1 stop6h 20m

Rapid City

sáb. 8/30

11:18 am-4:33 pm

1 stop4h 15m

$249

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

mié. 8/6

5:37 pm-10:31 pm

1 stop5h 54m

Rapid City

sáb. 8/30

10:55 am-9:55 pm

2 stops10h 00m

$254

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

jue. 7/10

7:08 am-9:09 pm

1 stop15h 01m

Rapid City

dom. 7/13

9:49 pm-8:55 am

2 stops34h 06m

$269

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

vie. 7/11

7:00 am-4:09 pm

1 stop10h 09m

Rapid City

lun. 7/14

5:27 pm-12:28 pm

1 stop18h 01m

$274

ChicagoRapid City

MDW - RAP

MDWRAP

Chicago Midway

mié. 9/3

7:17 pm-10:32 pm

1 stop4h 15m

Rapid City

lun. 9/15

4:35 pm-12:32 pm

2 stops18h 57m

$282

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

jue. 8/14

7:23 am-5:42 pm

1 stop11h 19m

Rapid City

mar. 8/19

6:04 pm-1:12 pm

1 stop18h 08m

$286

BloomingtonRapid City

BMI - RAP

BMIRAP

Bloomington-Normal

lun. 8/4

3:51 pm-9:06 pm

1 stop6h 15m

Rapid City

vie. 8/8

6:12 pm-11:41 pm

1 stop4h 29m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 30 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 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 June is currently the most expensive (average of $504). 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 junio 12, 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.

Weekly flight availability from Illinois to Rapid City

Explore weekly flight availability from Illinois to Rapid City. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated junio 12, 2025.

The most flights from USIL to RAP are scheduled on a Wednesday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

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 junio 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Sun Country Air
6.9
Okay
345 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $110 on American Airlines. Other airlines that offer cheap prices include Delta from $120 and Sun Country Air from $122 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 Republic Airways (97%), American Airlines (93%) or Envoy Air (93%) 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 $289, our data shows the cheapest flight currently is $162. When looking at the most popular route, (Chicago O'Hare Intl - Rapid City), you can expect to pay $201 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 June is currently the most expensive (average of $504). 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
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Sturgis
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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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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$209Average$321FlexibilityNo cancel feeOn-time71%
DeltaCheapest$218Average$368FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$233Average$397FlexibilityNo cancel feeOn-time69%

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