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$241+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — BOI
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap 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 January 28, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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 2/258:30 am
RAP
-
GEG
1 stop5h 12m
United Airlines
Wed 3/45:00 am
GEG
-
RAP
1 stop5h 12m
United Airlines
Deal found 1/27$269
This Delta deal was found by Cheapflights users on 1/27. 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 2/266:00 am
RAP
-
GEG
1 stop8h 08m
Delta
Thu 3/511:22 am
GEG
-
RAP
2 stops10h 05m
Delta
Deal found 1/27$274
This Delta deal was found by Cheapflights users on 1/25. 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 2/106:00 am
RAP
-
BOI
1 stop7h 34m
Delta
Sat 2/143:01 pm
BOI
-
RAP
1 stop7h 26m
Delta
Deal found 1/25$279
This Delta deal was found by Cheapflights users on 1/27. 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 2/116:00 am
RAP
-
GEG
1 stop8h 03m
Delta
Sun 2/156:45 am
GEG
-
RAP
1 stop7h 59m
Delta
Deal found 1/27$279
This Delta deal was found by Cheapflights users on 1/27. 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 2/256:00 am
RAP
-
GEG
1 stop8h 08m
Delta
Wed 3/41:25 pm
GEG
-
RAP
2 stops8h 02m
Delta
Deal found 1/27$284
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/32:40 pm
RAP
-
BOI
1 stop5h 05m
United Airlines
Tue 2/105:16 pm
BOI
-
RAP
1 stop5h 13m
United Airlines
Deal found 1/26$309
This United Airlines deal was found by Cheapflights users on 1/27. 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 2/34:40 pm
RAP
-
GEG
1 stop5h 43m
United Airlines
Tue 2/101:48 pm
GEG
-
RAP
1 stop5h 44m
United Airlines
Deal found 1/27$309
This Delta deal was found by Cheapflights users on 1/27. 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 2/36:00 am
RAP
-
GEG
1 stop8h 03m
Delta
Tue 2/101:15 pm
GEG
-
RAP
2 stops8h 13m
Delta
Deal found 1/27$314
This United Airlines deal was found by Cheapflights users on 1/27. 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 2/245:20 am
RAP
-
IDA
1 stop4h 28m
United Airlines
Mon 3/25:33 pm
IDA
-
RAP
1 stop4h 43m
United Airlines
Deal found 1/27$375
This American Airlines deal was found by Cheapflights users on 1/27. 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 2/252:21 pm
RAP
-
GEG
1 stop7h 51m
American Airlines
Wed 3/46:00 am
GEG
-
RAP
1 stop6h 51m
American Airlines
Deal found 1/27$375
This United Airlines deal was found by Cheapflights users on 1/25. 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 1/278:30 am
RAP
-
IDA
1 stop5h 00m
United Airlines
Sat 1/312:40 pm
IDA
-
RAP
1 stop4h 34m
United Airlines
Deal found 1/25$379
This United Airlines deal was found by Cheapflights users on 1/25. 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 5/2211:15 am
RAP
-
BOI
1 stop6h 41m
United Airlines
Mon 5/255:45 pm
BOI
-
RAP
1 stop4h 39m
United Airlines
Deal found 1/25$384

Find 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 January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$269
(United Airlines)

One-way from

$241
(Delta)

Popular in

June

Cheapest in

August

Average price

$338
Provider with most accurate pricing for Rapid City-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rapid City-Boise Air Term. Gowen Fld flights.
Search Deals
From Rapid City to Idaho
Search Deals
One-way flight from Rapid City to Idaho
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 28, 2026.
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 CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 2/26

7:00 am-12:42 pm

1 stop6h 42m

Spokane

Thu 3/5

5:00 am-1:13 pm

1 stop7h 13m

$269

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 2/25

8:30 am-12:42 pm

1 stop5h 12m

Spokane

Wed 3/4

5:00 am-11:12 am

1 stop5h 12m

$269

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 2/26

6:00 am-1:08 pm

1 stop8h 08m

Spokane

Thu 3/5

11:22 am-10:27 pm

2 stops10h 05m

$274

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Tue 2/10

6:00 am-1:34 pm

1 stop7h 34m

Boise Air Term. Gowen Fld

Sat 2/14

3:01 pm-10:27 pm

1 stop7h 26m

$279

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 2/11

6:00 am-1:03 pm

1 stop8h 03m

Spokane

Sun 2/15

6:45 am-3:44 pm

1 stop7h 59m

$279

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 2/25

6:00 am-1:08 pm

1 stop8h 08m

Spokane

Wed 3/4

1:25 pm-10:27 pm

2 stops8h 02m

$284

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 2/25

2:21 pm-9:12 pm

1 stop7h 51m

Spokane

Wed 3/4

6:00 am-1:51 pm

1 stop6h 51m

$375

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 2/24

5:20 am-9:48 am

1 stop4h 28m

Idaho Falls Fanning Field

Mon 3/2

5:33 pm-10:16 pm

1 stop4h 43m

$375

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Fri 5/22

11:15 am-5:56 pm

1 stop6h 41m

Boise Air Term. Gowen Fld

Mon 5/25

5:45 pm-10:24 pm

1 stop4h 39m

$384

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 2/27

5:20 am-9:48 am

1 stop4h 28m

Idaho Falls Fanning Field

Sun 3/1

5:33 pm-10:16 pm

1 stop4h 43m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 21 results
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2
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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
No data available for this route at this time. Please check back soon.

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 January 28, 2026.
Read reviews from past customers who have flown Delta and United Airlines from Rapid City to Idaho. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,124 reviews

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,124 reviews
Delta
7.9
Good
8,124 reviews

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,212 reviews
Delta
7.9
Good
8,124 reviews

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

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

    For as low as $269, United Airlines can have you in Idaho from Rapid City in 6h 42m. Rapid City and Idaho are separated by a distance of 738 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    While some choose either Rapid City - Idaho Falls Fanning Field or Rapid City - Boise Air Term. Gowen Fld, Rapid City - Spokane 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.

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 2 airlines flying from Rapid City to Idaho

Discover the top 2 airlines 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 January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$248Average$392FlexibilityNo cancel feeOn-time69%
DeltaCheapest$248Average$248FlexibilityNo cancel feeOn-timeN/A

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