Cheap Flights from Rapid City (RAP) to Casper (CPR)

Popular airlines from Rapid City Regional Airport (RAP) to Casper, WY (CPR-Natrona County Intl.)

Cheap Flights from Rapid City to Casper (RAP-CPR)

Prices were available within the past 7 days and start at for one-way flights and $587 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 23 - Tue, Sep 30
RAP
Rapid City
CPR
Casper
$587 Roundtrip, found 1 day ago
$587
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 23 from Rapid City to Casper, returning Tue, Sep 30, priced at $587 found 1 day ago
United
Tue, Sep 23 - Sat, Sep 27
RAP
Rapid City
CPR
Casper
$612 Roundtrip, found 1 day ago
$612
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 23 from Rapid City to Casper, returning Sat, Sep 27, priced at $612 found 1 day ago
United
Mon, Sep 22 - Wed, Sep 24
RAP
Rapid City
CPR
Casper
$1,441 Roundtrip, found 1 day ago
$1,441
Roundtrip
found 1 day ago
Select United flight, departing Mon, Sep 22 from Rapid City to Casper, returning Wed, Sep 24, priced at $1,441 found 1 day ago
United
Tue, Sep 23 - Wed, Sep 24
RAP
Rapid City
CPR
Casper
$1,473 Roundtrip, found 1 day ago
$1,473
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 23 from Rapid City to Casper, returning Wed, Sep 24, priced at $1,473 found 1 day ago
United
Mon, Sep 22 - Tue, Sep 23
RAP
Rapid City
CPR
Casper
$1,516 Roundtrip, found 1 day ago
$1,516
Roundtrip
found 1 day ago
Select United flight, departing Mon, Sep 22 from Rapid City to Casper, returning Tue, Sep 23, priced at $1,516 found 1 day ago
United
Sun, Sep 21 - Tue, Sep 23
RAP
Rapid City
CPR
Casper
$1,623 Roundtrip, found 1 day ago
$1,623
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 21 from Rapid City to Casper, returning Tue, Sep 23, priced at $1,623 found 1 day ago
United
Sun, Sep 21 - Mon, Sep 22
RAP
Rapid City
CPR
Casper
$1,703 Roundtrip, found 1 day ago
$1,703
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 21 from Rapid City to Casper, returning Mon, Sep 22, priced at $1,703 found 1 day ago
United
Sun, Sep 21 - Thu, Sep 25
RAP
Rapid City
CPR
Casper
$4,142 Roundtrip, found 1 day ago
$4,142
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 21 from Rapid City to Casper, returning Thu, Sep 25, priced at $4,142 found 1 day ago

Frequently asked questions

How much does a flight from Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR) cost?
Snag a cheap one-way flight or cheap return flight from $587 from Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR)?
The cheapest month to fly from RAP to CPR is September, when demand is low. Off-peak months are often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest RAP to CPR flight.
How many flights per day from Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR)?
There aren't any daily direct flights available from Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from RAP to CPR?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change 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 is the best time to fly from Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR)?
To avoid potential delays on the Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR) route, aim to travel before 3 PM. Departures after this hour are 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 Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR) last-minute?
Last-minute bookings from RAP to CPR are generally more expensive. To lock in the best rates, start looking for flights as soon as possible. That said, if you're flexible with your travel dates, it's possible to land a cheap fare just before your departure.
Is it cheaper to book a RAP to CPR flight and hotel package?
Compared with arranging hotels and flights separately, booking a RAP to CPR flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the hassle out of planning your trip. Just secure your flights and select from our extensive range of hotels, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Rapid City Regional Airport (RAP) to Natrona County Intl. Airport (CPR)?
In most cases, you can reschedule or cancel your RAP to CPR flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you'd like further details, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Rapid City Regional
Destination airport
Natrona County Intl.
Airlines serving
United
Roundtrip price
$586
Distance
188 mi

Book with confidence

Book with confidence

Rapid City to Casper Flights

The cheapest times to fly from Rapid City to Casper

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 Rapid City to Casper are during the month of September. You can find some of the cheapest flights from Rapid City to Casper with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Rapid City to Casper: 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 Rapid City to Casper

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 Rapid City to Casper in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Rapid City to Casper 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 Rapid City to Casper 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.

 

Rapid City to Casper Flights

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*Available to One Key members.