$191 Cheap Flights from Boise (BOI) to Rapid City (RAP)

View $191 flight on Tue, Dec 16, 2025Opens in a new window

Popular airlines from Boise Airport (BOI) to Rapid City Regional Airport (RAP)

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Cheap Flights from Boise to Rapid City (BOI-RAP)

Prices were available within the past 7 days and start at $191 for one-way flights and $249 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Jan 10 - Mon, Jan 26
BOI
Boise
RAP
Rapid City
$249 Roundtrip, found 1 day ago
$249
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jan 10 from Boise to Rapid City, returning Mon, Jan 26, priced at $249 found 1 day ago
Delta
Wed, Jan 14 - Mon, Jan 26
BOI
Boise
RAP
Rapid City
$254 Roundtrip, found 1 day ago
$254
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jan 14 from Boise to Rapid City, returning Mon, Jan 26, priced at $254 found 1 day ago
United
Fri, Nov 14 - Sun, Nov 16
BOI
Boise
RAP
Rapid City
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select United flight, departing Fri, Nov 14 from Boise to Rapid City, returning Sun, Nov 16, priced at $259 found 2 days ago
Delta
Mon, Nov 17 - Thu, Dec 4
BOI
Boise
RAP
Rapid City
$264 Roundtrip, found 1 day ago
$264
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Nov 17 from Boise to Rapid City, returning Thu, Dec 4, priced at $264 found 1 day ago
United
Wed, Dec 3 - Wed, Dec 10
BOI
Boise
RAP
Rapid City
$267 Roundtrip, found 5 days ago
$267
Roundtrip
found 5 days ago
Select United flight, departing Wed, Dec 3 from Boise to Rapid City, returning Wed, Dec 10, priced at $267 found 5 days ago
United
Wed, Dec 3 - Wed, Dec 10
BOI
Boise
RAP
Rapid City
$268 Roundtrip, found 5 days ago
$268
Roundtrip
found 5 days ago
Select United flight, departing Wed, Dec 3 from Boise to Rapid City, returning Wed, Dec 10, priced at $268 found 5 days ago
United
Sat, Nov 8 - Mon, Nov 10
BOI
Boise
RAP
Rapid City
$278 Roundtrip, found 5 days ago
$278
Roundtrip
found 5 days ago
Select United flight, departing Sat, Nov 8 from Boise to Rapid City, returning Mon, Nov 10, priced at $278 found 5 days ago
American Airlines
Fri, Nov 14 - Tue, Nov 18
BOI
Boise
RAP
Rapid City
$279 Roundtrip, found 1 day ago
$279
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Nov 14 from Boise to Rapid City, returning Tue, Nov 18, priced at $279 found 1 day ago
United
Tue, Nov 11 - Tue, Nov 18
BOI
Boise
RAP
Rapid City
$281 Roundtrip, found 1 day ago
$281
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 11 from Boise to Rapid City, returning Tue, Nov 18, priced at $281 found 1 day ago
Delta
Tue, Dec 2 - Sun, Dec 14
BOI
Boise
RAP
Rapid City
$285 Roundtrip, found 1 day ago
$285
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Dec 2 from Boise to Rapid City, returning Sun, Dec 14, priced at $285 found 1 day ago

Find the cheapest month to fly from Boise (BOI) to Rapid City (RAP)

July is typically the cheapest month to fly

From $248 - $466 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 $264
RAP
Rapid City Regional
CheapestClosest
Average driving time to city center16 min
Flights from $264

Frequently asked questions

How much does a flight from Boise Airport (BOI) to Rapid City Regional Airport (RAP) cost?
Get a cheap one-way flight from $191 or cheap return flight from $249 from Boise Airport (BOI) 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 Boise Airport (BOI) to Rapid City Regional Airport (RAP)?
The cheapest month to fly from BOI to RAP is January, when there's less demand. Off-peak months are usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from Boise Airport (BOI) to Rapid City Regional Airport (RAP)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest BOI to RAP flight.
How many flights per day from Boise Airport (BOI) to Rapid City Regional Airport (RAP)?
You'll need to take a flight with a layover if you're traveling from Boise Airport (BOI) to Rapid City Regional Airport (RAP). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from BOI to RAP?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a number of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boise Airport (BOI) to Rapid City Regional Airport (RAP)?
To land at Rapid City Regional Airport (RAP) without delays, opt for a flight that leaves from Boise Airport (BOI) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Boise Airport (BOI) to Rapid City Regional Airport (RAP) last-minute?
Waiting until just before your trip to book a ticket from BOI to RAP generally means paying more. While you may come across some last-minute discounts, they aren't always guaranteed. Be flexible with your itinerary to boost your chances of scoring a bargain.
Is it cheaper to book a BOI to RAP flight and hotel package?
Opting for a BOI to RAP flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our extensive range of hotels and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Rapid City Regional Airport (RAP)?
If you reserved your BOI to RAP flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

Travel information

Origin airport
Boise
Destination airport
Rapid City Regional
Airlines serving
American Airlines, Delta, United
Roundtrip price
$248
Distance
656 mi

Book with confidence

Boise to Rapid City Flights

The cheapest times to fly from Boise 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 Boise to Rapid City are during the month of January. You can find some of the cheapest flights from Boise to Rapid City with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Boise 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 Boise 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 Boise to Rapid City in 2025. You can also book with separate airlines for your outbound and return journeys, from $191 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 Boise 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 Boise 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.

 

Boise to Rapid City Flights

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*Available to One Key members.