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$160+ Cheap flights from Rapid City (RAP) to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — BOI
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
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Cheap flight deals from Rapid City to Idaho

Keep the following information in mind while searching for Rapid City to Idaho flight deals. Data was last updated April 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$321
(United Airlines)

One-way from

$160
(American Airlines)

Popular in

November

Cheapest in

January

Average price

$356
Provider with most accurate pricing for Rapid City-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Rapid City-Boise Air Term. Gowen Fld flights.
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From Rapid City to Idaho
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One-way flight from Rapid City to Idaho
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Highest demand for flights based on searches. 10% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Rapid City to Idaho

Cheapest flights from Rapid City to Idaho
Explore the most affordable flight options available from Rapid City to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

This United Airlines deal was found by Cheapflights users on 4/23. 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 5/85:25 amRAP - IDA
1 stop4h 07mUnited Airlines
Mon 5/122:40 pmIDA - RAP
1 stop5h 46mUnited Airlines
Deal found 4/23$321
This United Airlines deal was found by Cheapflights users on 4/22. 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 5/23:43 pmRAP - GEG
1 stop6h 07mUnited Airlines
Sun 5/45:29 amGEG - RAP
1 stop4h 29mUnited Airlines
Deal found 4/22$379
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Fri 5/95:36 amRAP - GEG
1 stop7h 49mAmerican Airlines
Sun 5/115:34 amGEG - RAP
1 stop9h 30mAmerican Airlines
Deal found 4/22$390
This United Airlines deal was found by Cheapflights users on 4/23. 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 6/155:25 amRAP - BOI
1 stop4h 21mUnited Airlines
Mon 6/235:43 pmBOI - RAP
1 stop4h 17mUnited Airlines
Deal found 4/23$408
This Delta deal was found by Cheapflights users on 4/23. 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.
Wed 4/234:19 pmRAP - GEG
1 stop8h 37mDelta
Fri 4/256:00 amGEG - RAP
1 stop8h 38mDelta
Deal found 4/23$711
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 5/165:36 amRAP - BOI
2 stops17h 56mAmerican Airlines
Mon 5/195:10 pmBOI - RAP
2 stops18h 49mAmerican Airlines
Deal found 4/23$755
This Delta deal was found by Cheapflights users on 4/23. 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.
Thu 5/86:33 amRAP - IDA
2 stops11h 37mDelta
Mon 5/1212:30 pmIDA - RAP
2 stops10h 04mDelta
Deal found 4/23$1,611

Cheapflights Fare Finder

Customize your flight search to find flights from Rapid City to Idaho 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 April 24, 2025.
Use the filters below to find and compare flights from Rapid City to Idaho that are best for you.

Fly from

Rapid City

Fly to

Idaho

Route

Depart

Return

Price

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Thu 5/8

5:25 am-9:32 am

1 stop4h 07m

Idaho Falls Fanning Field

Mon 5/12

2:40 pm-8:26 pm

1 stop5h 46m

$321

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 5/9

5:36 am-12:25 pm

1 stop7h 49m

Spokane

Sun 5/11

5:34 am-4:04 pm

1 stop9h 30m

$390

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Sun 6/15

5:25 am-9:46 am

1 stop4h 21m

Boise Air Term. Gowen Fld

Mon 6/23

5:43 pm-10:00 pm

1 stop4h 17m

$408

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 5/9

5:25 am-11:38 pm

2 stops19h 13m

Spokane

Sun 5/11

5:29 am-12:33 pm

1 stop6h 04m

$536

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Fri 5/16

5:36 am-11:32 pm

2 stops17h 56m

Boise Air Term. Gowen Fld

Mon 5/19

5:10 pm-11:59 am

2 stops18h 49m

$755

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Thu 5/8

6:33 am-6:10 pm

2 stops11h 37m

Idaho Falls Fanning Field

Mon 5/12

12:30 pm-10:34 pm

2 stops10h 04m

$1,611

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Mon 6/9

5:38 am-11:45 am

1 stop7h 07m

$160

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Mon 6/9

3:40 pm-2:47 pm

2 stops24h 07m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Best time to book a flight from Rapid City to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho 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 Idaho

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

Currently, October is the cheapest month in which you can book a flight from Rapid City to Idaho (average of $314). Flying from Rapid City to Idaho in June is currently the most expensive (average of $419). 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.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated April 24, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Rapid City to Idaho by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,685 reviews
Delta
8.0
Very good
7,920 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,920 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

  • What airport do you fly from for flights from Rapid City to Idaho?

    Located just 9.0 mi from the city center, Rapid City (RAP) is the airport most travelers will use when flying to Idaho from Rapid City.

  • What are the most popular routes from Rapid City to Idaho?

    While some choose either Rapid City - Spokane or Rapid City - Idaho Falls Fanning Field, Rapid City - Boise Air Term. Gowen Fld is the most popular route from Rapid City to Idaho.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Rapid City to Idaho (average of $314). Flying from Rapid City to Idaho in June is currently the most expensive (average of $419). 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

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Alternative routes for Rapid City to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Rapid City to Idaho

Discover the top airline that operate flights from Rapid City to Idaho. 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$248Average$420FlexibilityNo cancel feeOn-time69%

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