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Rapid City

$259+ Cheap flights from Boise to Rapid City (BOI - RAP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — RAP
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Boise to Rapid City

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Rapid City (RAP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 15, 2025.

Round-trip from

$259
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$414
From Boise Air Term. Gowen Fld to Rapid City
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Highest demand for flights based on searches. 3% potential increase in price ($13 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 September 2025
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Find flight deals from Boise to Rapid City

Cheapest flights from Boise to Rapid City
Explore the most affordable flight options available from Boise to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/305:00 amBOI - RAP
1 stop4h 10mUnited Airlines
Sat 10/47:00 amRAP - BOI
1 stop6h 33mUnited Airlines
Deal found 9/15$259
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 10/135:00 amBOI - RAP
1 stop12h 00mUnited Airlines
Wed 10/225:30 amRAP - BOI
1 stop4h 23mUnited Airlines
Deal found 9/14$459
This Delta deal was found by Cheapflights users on 9/13. 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.
Sun 9/143:20 pmBOI - RAP
1 stop7h 10mDelta
Tue 9/166:27 amRAP - BOI
1 stop7h 48mDelta
Deal found 9/13$794
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Sun 9/145:39 pmBOI - RAP
1 stop4h 20mUnited Airlines
Tue 9/1611:18 amRAP - BOI
2 stops11h 23mUnited Airlines
Deal found 9/13$861
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 10/135:20 pmBOI - RAP
2 stops22h 43mAmerican Airlines
Wed 10/225:32 amRAP - BOI
2 stops14h 05mAmerican Airlines
Deal found 9/14$878
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:00 amBOI - RAP
2 stops9h 43mDelta
Sat 10/411:00 amRAP - BOI
2 stops8h 04mDelta
Deal found 9/15$888

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 September 15, 2025.
Use the filters below to find and compare flights from Boise to Rapid City that are best for you.

Fly from

Boise

Fly to

Rapid City

Route

Depart

Return

Price

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Tue 9/30

5:00 am-9:10 am

1 stop4h 10m

Rapid City

Sat 10/4

7:00 am-1:33 pm

1 stop6h 33m

$259

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Sat 3/7

5:00 am-9:18 am

1 stop4h 18m

Rapid City

Wed 3/11

5:30 am-9:43 am

1 stop4h 13m

$349

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Mon 10/13

5:00 am-5:00 pm

1 stop12h 00m

Rapid City

Wed 10/22

5:30 am-9:53 am

1 stop4h 23m

$459

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Tue 9/30

6:00 am-3:43 pm

2 stops9h 43m

Rapid City

Sat 10/4

11:00 am-7:04 pm

2 stops8h 04m

$888

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Best time to book a flight from Boise to Rapid City

Have a flexible travel schedule? Discover the best time to fly to Rapid City from Boise 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 Boise to Rapid City

What is the cheapest month to book a flight from Boise to Rapid City?

Currently, January is the cheapest month in which you can book a flight from Boise to Rapid City (average of $348). Flying from Boise to Rapid City in June is currently the most expensive (average of $502). 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 BOI to RAP?

Find hourly flight availability from Boise 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 September 15, 2025.

When flying from Boise to Rapid City, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 14% versus a flight at noon.

How much does it cost to fly round-trip from Boise to Rapid City?

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 September 15, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Boise to Rapid City by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,929 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Boise to Rapid City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boise to Rapid City?

    United Airlines can get you from Boise to Rapid City in just under 4h 10m. Your travel time can differ by up to . There are 656 mi between Boise and Rapid City.

  • What are the cheapest airlines flying from Boise to Rapid City round-trip?

    According to our current data, Delta ($248), and United Airlines ($289) offers the cheapest pricing from Boise to Rapid City. Users have found that Delta is 37% cheaper than the other options available to this destination.

  • Can I find deals for flights from Boise to Rapid City that include hotel bookings?

    Yes. In addition to deals on Boise to Rapid City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Rapid City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Rapid City.

  • Can I find deals for business class flights from Boise to Rapid City?

    Yes. Cheapflights offers flight deals from Boise 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 Boise to Rapid City?

    Currently, January is the cheapest month in which you can book a flight from Boise to Rapid City (average of $348). Flying from Boise to Rapid City in June is currently the most expensive (average of $502). 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 Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
Deadwood
Keystone
Sturgis
Spearfish

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Top 2 airlines flying from Boise to Rapid City

Discover the top 2 airlines that operate flights from Boise 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$283FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$289Average$411FlexibilityNo cancel feeOn-time69%

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