$169 Cheap Flights from Chicago (ORD) to Rapid City (RAP)

View $169 flight on Mon, Jun 1, 2026Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP)

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Cheap Flights from Chicago to Rapid City (ORD-RAP)

Prices were available within the past 7 days and start at $169 for one-way flights and $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Sep 9 - Wed, Sep 23
ORD
Chicago
RAP
Rapid City
$159 Roundtrip, found 1 day ago
$159
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Sep 9 from Chicago to Rapid City, returning Wed, Sep 23, priced at $159 found 1 day ago
American Airlines
Fri, Sep 25 - Sat, Sep 26
ORD
Chicago
RAP
Rapid City
$169 Roundtrip, found 8 hours ago
$169
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Fri, Sep 25 from Chicago to Rapid City, returning Sat, Sep 26, priced at $169 found 8 hours ago
American Airlines
Tue, Sep 1 - Sun, Sep 6
ORD
Chicago
RAP
Rapid City
$179 Roundtrip, found 1 day ago
$179
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Sep 1 from Chicago to Rapid City, returning Sun, Sep 6, priced at $179 found 1 day ago
American Airlines
Fri, Sep 25 - Sun, Sep 27
ORD
Chicago
RAP
Rapid City
$189 Roundtrip, found 8 hours ago
$189
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Fri, Sep 25 from Chicago to Rapid City, returning Sun, Sep 27, priced at $189 found 8 hours ago
United
Thu, Nov 20 - Sun, Nov 23
ORD
Chicago
RAP
Rapid City
$209 Roundtrip, found 1 day ago
$209
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 20 from Chicago to Rapid City, returning Sun, Nov 23, priced at $209 found 1 day ago
United
Wed, Nov 26 - Mon, Dec 1
ORD
Chicago
RAP
Rapid City
$219 Roundtrip, found 13 hours ago
$219
Roundtrip
found 13 hours ago
Select United flight, departing Wed, Nov 26 from Chicago to Rapid City, returning Mon, Dec 1, priced at $219 found 13 hours ago
American Airlines
Fri, Sep 25 - Sat, Sep 26
ORD
Chicago
RAP
Rapid City
$224 Roundtrip, found 8 hours ago
$224
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Fri, Sep 25 from Chicago to Rapid City, returning Sat, Sep 26, priced at $224 found 8 hours ago
American Airlines
Wed, Sep 9 - Wed, Sep 23
ORD
Chicago
RAP
Rapid City
$225 Roundtrip, found 1 day ago
$225
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Sep 9 from Chicago to Rapid City, returning Wed, Sep 23, priced at $225 found 1 day ago
Delta
Wed, Dec 3 - Sun, Dec 7
ORD
Chicago
RAP
Rapid City
$229 Roundtrip, found 3 hours ago
$229
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Dec 3 from Chicago to Rapid City, returning Sun, Dec 7, priced at $229 found 3 hours ago
American Airlines
Wed, Aug 19 - Sun, Aug 23
ORD
Chicago
RAP
Rapid City
$229 Roundtrip, found 3 days ago
$229
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Aug 19 from Chicago to Rapid City, returning Sun, Aug 23, priced at $229 found 3 days ago

Find the cheapest month to fly from Chicago (ORD) to Rapid City (RAP)

September is typically the cheapest month to fly

From $191 - $327 per traveler.

Alternative airports near Rapid City

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Rapid City Regional RAP. Cheapest and Closest option available. Average driving time to city center is 16 minutes. Flights from $249
RAP
Rapid City Regional
CheapestClosest
Average driving time to city center16 min
Flights from $249
Flights from Chicago (ORD) to Rapid City (RAP)
Origin airport
O'Hare Intl.
Destination airport
Rapid City Regional
Airlines serving
American Airlines, Delta, United
Roundtrip price
$159
Distance
777 mi
Average flight time
2 hours 49 mins

Chicago to Rapid City Flights

The cheapest times to fly from Chicago to Rapid City

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Rapid City are during the month of September. You can find some of the cheapest flights from Chicago to Rapid City with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Rapid City

Sunday is one of the best days to book for cheap flights from Chicago to Rapid City: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to Rapid City

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Rapid City in 2025. You can also book with separate airlines for your outbound and return journeys, from $169 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Rapid City flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Rapid City airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP) cost?
Secure a cheap one-way flight from $169 or cheap return flight from $159 from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP)?
The cheapest month to fly from ORD to RAP is September, when there's less demand. Off-peak season is usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from ORD to RAP. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP)?
You'll have to catch a flight with a layover if you're traveling from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from ORD to RAP?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from ORD to RAP?
With 81% of journeys generally landing on time, American Airlines has the best on-time performance for direct flights from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP). To monitor your flight status and get notifications if anything changes, simply head to the Expedia App.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP)?
Book a flight from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP) that takes off before 3 PM to reduce the likelihood of delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP) last-minute?
Last-minute bookings from ORD to RAP are usually more expensive. To secure the lowest rates, start searching for flights ahead of time. That said, if you can play around with your travel dates, you may score a cheap ticket right before your journey.
Is it cheaper to book an ORD to RAP flight and hotel package?
You'll generally save money by securing an ORD to RAP flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After choosing your ideal accommodations and flights, consider adding extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Rapid City Regional Airport (RAP)?
In most instances, you can cancel or reschedule your ORD to RAP flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you want further information, go to our Customer Service portal.

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*Available to One Key members.