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$249+ Cheap flights from Rapid City to Boise (RAP - BOI)

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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — BOI
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Rapid City to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to Boise (BOI). 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 11, 2025.

Round-trip from

$249
(United Airlines)

Popular in

November

Cheapest in

January

Average price

$498
From Rapid City to Boise Air Term. Gowen Fld
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Highest demand for flights based on searches. 13% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($19 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 Rapid City to Boise

Cheapest flights from Rapid City to Boise
Explore the most affordable flight options available from Rapid City to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 11/198:45 amRAP - BOI
1 stop4h 40mUnited Airlines
Sun 11/235:00 amBOI - RAP
1 stop4h 15mUnited Airlines
Deal found 9/10$249
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 9/2511:15 amRAP - BOI
1 stop6h 33mUnited Airlines
Mon 9/2910:45 amBOI - RAP
1 stop6h 15mUnited Airlines
Deal found 9/10$276
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 10/38:30 amRAP - BOI
1 stop5h 03mUnited Airlines
Sun 10/55:39 pmBOI - RAP
1 stop4h 33mUnited Airlines
Deal found 9/11$319
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 11/191:42 pmRAP - BOI
2 stops20h 55mAmerican Airlines
Sun 11/231:25 pmBOI - RAP
1 stop7h 52mAmerican Airlines
Deal found 9/10$438
This Delta deal was found by Cheapflights users on 9/11. 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.
Fri 10/32:27 pmRAP - BOI
2 stops9h 48mDelta
Sun 10/55:25 amBOI - RAP
1 stop8h 21mDelta
Deal found 9/11$496
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Thu 10/25:30 amRAP - BOI
2 stops8h 00mUnited Airlines
Sun 10/55:39 pmBOI - RAP
1 stop4h 33mUnited Airlines
Deal found 9/11$576
This Delta deal was found by Cheapflights users on 9/11. 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.
Fri 9/124:24 pmRAP - BOI
1 stop7h 35mDelta
Mon 9/153:20 pmBOI - RAP
1 stop7h 10mDelta
Deal found 9/11$728
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 9/125:30 amRAP - BOI
1 stop4h 12mUnited Airlines
Mon 9/152:13 pmBOI - RAP
2 stops18h 52mUnited Airlines
Deal found 9/11$798

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rapid City to Boise 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 11, 2025.
Use the filters below to find and compare flights from Rapid City to Boise that are best for you.

Fly from

Rapid City

Fly to

Boise

Route

Depart

Return

Price

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Wed 11/19

8:45 am-1:25 pm

1 stop4h 40m

Boise Air Term. Gowen Fld

Sun 11/23

5:00 am-9:15 am

1 stop4h 15m

$249

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Thu 9/25

11:15 am-5:48 pm

1 stop6h 33m

Boise Air Term. Gowen Fld

Mon 9/29

10:45 am-5:00 pm

1 stop6h 15m

$276

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Thu 10/2

5:30 am-9:42 am

1 stop4h 12m

Boise Air Term. Gowen Fld

Sun 10/5

5:39 pm-10:12 pm

1 stop4h 33m

$319

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Tue 3/3

7:05 am-1:30 pm

1 stop6h 25m

Boise Air Term. Gowen Fld

Sat 3/7

2:43 pm-8:33 pm

1 stop5h 50m

$319

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Fri 10/3

5:50 pm-10:30 pm

1 stop4h 40m

Boise Air Term. Gowen Fld

Sun 10/5

5:00 am-10:57 am

1 stop5h 57m

$319

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Tue 3/3

6:20 am-2:09 pm

1 stop7h 49m

Boise Air Term. Gowen Fld

Sat 3/7

1:10 pm-10:14 pm

2 stops9h 04m

$486

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Fri 10/3

2:27 pm-12:15 am

2 stops9h 48m

Boise Air Term. Gowen Fld

Sun 10/5

5:25 am-1:46 pm

1 stop8h 21m

$496

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Wed 9/17

5:30 am-9:42 am

1 stop4h 12m

$271

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Wed 9/17

12:12 pm-8:31 pm

3 stops56h 19m

$441

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Rapid City to Boise

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

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

Currently, October is the cheapest month in which you can book a flight from Rapid City to Boise (average of $314). Flying from Rapid City to Boise in June is currently the most expensive (average of $398). 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.

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

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Rapid City to Boise 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
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

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 Rapid City to Boise. 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 Rapid City to Boise?

    Airlines like United Airlines fly from Rapid City to Boise in about 4h 40m. The time it takes to get you to your destination can typically vary by up to . The distance between Rapid City and Boise is about 656 mi.

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

    Our cheapest airline available from Rapid City to Boise is Delta. Our recent data shows that you can find tickets from as low as $248 on this airline. An additional option worth looking into is United Airlines, starting at $279. Delta is priced at 36% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Rapid City to Boise (average of $314). Flying from Rapid City to Boise in June is currently the most expensive (average of $398). 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 Boise?

Book flights to Boise if you plan to visit one of these locations
Ontario
Meridian
Nampa
Caldwell
McCall

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Top 2 airlines flying from Rapid City to Boise

Discover the top 2 airlines that operate flights from Rapid City to Boise. 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$248FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$279Average$442FlexibilityNo cancel feeOn-time69%

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