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Rapid City

$142+ 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 6/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RAP
Apr 27 — May 41
Sun 4/27
Sun 5/4
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 April 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$209
(American Airlines)

One-way from

$142
(United Airlines)

Popular in

May

Cheapest in

February

Average price

$299

Good round-trip deal

$279 or less

Good one-way deal

$258 or less
Provider with most accurate pricing for Chicago (CHI)-Rapid City flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Rapid City flights.
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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. 7% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 22, 2025.

This American Airlines deal was found by Cheapflights users on 4/22. 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.
Thu 7/104:08 pmORD - RAP
Nonstop2h 19mAmerican Airlines
Mon 7/145:57 pmRAP - ORD
Nonstop2h 16mAmerican Airlines
Deal found 4/22$209
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Tue 5/69:30 amORD - RAP
Nonstop2h 30mUnited Airlines
Thu 5/1512:45 pmRAP - ORD
Nonstop2h 18mUnited Airlines
Deal found 4/22$219
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 8/55:30 amSTL - RAP
1 stop5h 25mAmerican Airlines
Sat 8/165:57 pmRAP - STL
1 stop4h 52mAmerican Airlines
Deal found 4/21$249
This Delta deal was found by Cheapflights users on 4/21. 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.
Tue 8/52:18 pmSTL - RAP
2 stops8h 38mDelta
Sat 8/166:20 amRAP - STL
1 stop4h 12mDelta
Deal found 4/21$254
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 5/73:37 pmPIA - RAP
1 stop6h 16mAmerican Airlines
Sun 5/1111:49 amRAP - PIA
1 stop3h 45mAmerican Airlines
Deal found 4/22$259
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 5/73:25 pmMLI - RAP
1 stop6h 28mAmerican Airlines
Sun 5/1111:49 amRAP - MLI
1 stop5h 13mAmerican Airlines
Deal found 4/22$259
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Thu 5/85:20 amSTL - RAP
1 stop5h 01mUnited Airlines
Mon 5/125:59 pmRAP - STL
1 stop4h 59mUnited Airlines
Deal found 4/22$259
This Delta deal was found by Cheapflights users on 4/22. 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.
Sat 5/106:24 amORD - RAP
1 stop4h 42mDelta
Sat 5/1710:46 amRAP - ORD
1 stop5h 20mDelta
Deal found 4/22$274
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 5/75:25 pmMLI - RAP
1 stop4h 49mUnited Airlines
Sun 5/1111:33 amRAP - MLI
2 stops9h 02mUnited Airlines
Deal found 4/22$277
This Delta deal was found by Cheapflights users on 4/22. 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.
Sat 5/106:30 pmMDW - RAP
1 stop5h 04mDelta
Sat 5/1710:46 amRAP - MDW
1 stop6h 01mDelta
Deal found 4/22$314
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 5/710:50 amPIA - RAP
2 stops10h 36mUnited Airlines
Sun 5/116:23 amRAP - PIA
1 stop6h 38mUnited Airlines
Deal found 4/22$326
This Mytrip deal was found by Cheapflights users on 4/22. 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.
Thu 6/511:50 amORD - RAP
1 stop10h 24mMultiple Airlines
Sun 6/810:04 pmRAP - ORD
2 stops31h 38mMultiple Airlines
Deal found 4/22$389

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 April 22, 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

Thu 7/10

4:08 pm-5:27 pm

Nonstop2h 19m

Rapid City

Mon 7/14

5:57 pm-9:13 pm

Nonstop2h 16m

$209

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

Tue 5/6

9:30 am-11:00 am

Nonstop2h 30m

Rapid City

Thu 5/15

12:45 pm-4:03 pm

Nonstop2h 18m

$219

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 8/5

5:30 am-9:55 am

1 stop5h 25m

Rapid City

Sat 8/16

5:57 pm-11:49 pm

1 stop4h 52m

$249

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 8/5

2:18 pm-9:56 pm

2 stops8h 38m

Rapid City

Sat 8/16

6:20 am-11:32 am

1 stop4h 12m

$254

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Thu 5/8

5:20 am-9:21 am

1 stop5h 01m

Rapid City

Mon 5/12

5:59 pm-11:58 pm

1 stop4h 59m

$259

PeoriaRapid City

PIA - RAP

PIARAP

Greater Peoria

Wed 5/7

3:37 pm-8:53 pm

1 stop6h 16m

Rapid City

Sun 5/11

11:49 am-4:34 pm

1 stop3h 45m

$259

MolineRapid City

MLI - RAP

MLIRAP

Moline Quad-City

Wed 5/7

3:25 pm-8:53 pm

1 stop6h 28m

Rapid City

Sun 5/11

11:49 am-6:02 pm

1 stop5h 13m

$259

ChicagoRapid City

ORD - RAP

ORDRAP

Chicago O'Hare Intl

Sat 5/10

6:24 am-10:06 am

1 stop4h 42m

Rapid City

Sat 5/17

10:46 am-5:06 pm

1 stop5h 20m

$274

MolineRapid City

MLI - RAP

MLIRAP

Moline Quad-City

Wed 5/7

5:25 pm-9:14 pm

1 stop4h 49m

Rapid City

Sun 5/11

11:33 am-9:35 pm

2 stops9h 02m

$277

ChicagoRapid City

MDW - RAP

MDWRAP

Chicago Midway

Sat 5/10

6:30 pm-10:34 pm

1 stop5h 04m

Rapid City

Sat 5/17

10:46 am-5:47 pm

1 stop6h 01m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 23 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 May is currently the most expensive (average of $556). 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 April 22, 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 April 22, 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
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

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
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

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
8,683 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

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
734 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

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
7,920 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

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 $142 on United Airlines. Other airlines that offer cheap prices include Delta from $175 and Allegiant Air from $192 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, 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 Emirates (94%), United Airlines (94%) or Air New Zealand (94%) 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 $360, our data shows the cheapest flight currently is $143. When looking at the most popular route, (Chicago O'Hare Intl - Rapid City), you can expect to pay $234 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 $556). 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

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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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$209Average$314FlexibilityNo cancel feeOn-time71%
DeltaCheapest$218Average$402FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$244Average$371FlexibilityNo cancel feeOn-time69%

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