$110+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
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 June 18, 2025.
Round-trip from | $239 (American Airlines) |
|---|---|
One-way from | $110 (American Airlines) |
Popular in | April |
Cheapest in | February |
Average price | $373 |
Good round-trip deal | $276 or less |
Good one-way deal | $223 or less |
Find flight deals from Illinois to Rapid City
Cheapest flights from Illinois to Rapid CityExplore 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 June 18, 2025.
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 June 18, 2025.
This American Airlines deal was found by Cheapflights users on 6/16. 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.
This Delta deal was found by Cheapflights users on 6/17. 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.
This United Airlines deal was found by Cheapflights users on 6/16. 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.
This Delta deal was found by Cheapflights users on 6/16. 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.
This Delta deal was found by Cheapflights users on 6/18. 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.
This Mytrip deal was found by Cheapflights users on 6/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/17. 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.
This United Airlines deal was found by Cheapflights users on 6/15. 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.
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight 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 June 18, 2025.
Use the filters below to find and compare flights from Illinois to Rapid City that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoRapid City
ORD - RAP
ORDRAP
Chicago O'Hare Intl
Fri 7/11
4:13 pm-5:31 pm
Nonstop2h 18m
Rapid City
Sat 7/12
6:01 pm-9:18 pm
Nonstop2h 17m
ChicagoRapid City
ORD - RAP
ORDRAP
Chicago O'Hare Intl
Sat 8/9
2:00 pm-10:31 pm
2 stops9h 31m
Rapid City
Fri 8/15
4:25 pm-9:34 pm
1 stop4h 09m
ChicagoRapid City
ORD - RAP
ORDRAP
Chicago O'Hare Intl
Mon 6/30
8:05 pm-9:46 pm
Nonstop2h 41m
Rapid City
Sat 10/4
1:44 pm-5:05 pm
Nonstop2h 21m
ChicagoRapid City
MDW - RAP
MDWRAP
Chicago Midway
Tue 10/28
6:45 pm-10:10 pm
1 stop4h 25m
Rapid City
Tue 11/4
10:40 am-6:07 pm
1 stop6h 27m
St. LouisRapid City
STL - RAP
STLRAP
Lambert-St Louis
Tue 7/15
5:37 pm-10:31 pm
1 stop5h 54m
Rapid City
Tue 7/22
4:30 pm-11:20 pm
1 stop5h 50m
ChicagoRapid City
ORD - RAP
ORDRAP
Chicago O'Hare Intl
Fri 7/11
4:36 pm-9:24 am
1 stop17h 48m
Rapid City
Sun 7/13
9:49 pm-5:58 pm
2 stops19h 09m
St. LouisRapid City
STL - RAP
STLRAP
Lambert-St Louis
Thu 8/14
6:00 am-5:42 pm
1 stop12h 42m
Rapid City
Tue 8/19
5:02 pm-11:14 pm
1 stop5h 12m
EvansvilleRapid City
EVV - RAP
EVVRAP
Evansville Dress Regional
Tue 8/19
1:37 pm-8:58 pm
1 stop8h 21m
Rapid City
Wed 8/27
5:39 am-1:07 pm
1 stop6h 28m
St. LouisRapid City
STL - RAP
STLRAP
Lambert-St Louis
Sun 7/20
5:15 am-9:04 am
1 stop4h 49m
Rapid City
Wed 7/23
3:25 pm-9:50 pm
1 stop5h 25m
MolineRapid City
MLI - RAP
MLIRAP
Moline Quad-City
Mon 9/29
6:30 am-10:13 am
1 stop4h 43m
Rapid City
Thu 10/2
1:44 pm-9:05 pm
1 stop6h 21m
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.
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 $506). 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 June 18, 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 June 18, 2025.
The most flights from USIL to RAP are scheduled on a Monday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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 June 18, 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.
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Entertainment
Food
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
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.
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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.
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 June 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$209 | Average$310 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$218 | Average$378 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$233 | Average$399 | FlexibilityNo cancel fee | On-time69% |