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Rapid City

$120+ Cheap flights from Idaho to Rapid City (RAP)

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — RAP
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Idaho to Rapid City

Cheapest flights from Idaho to Rapid City
Explore the most affordable flight options available from Idaho to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Delta deal was found by Cheapflights users on 10/30. 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 12/55:35 amBOI - RAP
1 stop8h 34mDelta
Mon 12/86:05 amRAP - BOI
1 stop8h 13mDelta
Deal found 10/30$249
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/95:25 amGEG - RAP
1 stop5h 01mUnited Airlines
Tue 12/162:55 pmRAP - GEG
1 stop7h 04mUnited Airlines
Deal found 10/28$249
This United Airlines deal was found by Cheapflights users on 10/28. 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 11/112:31 pmBOI - RAP
1 stop4h 12mUnited Airlines
Tue 11/185:15 amRAP - BOI
1 stop4h 43mUnited Airlines
Deal found 10/28$254
This Delta deal was found by Cheapflights users on 10/28. 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 12/96:00 amGEG - RAP
1 stop8h 45mDelta
Tue 12/162:51 pmRAP - GEG
2 stops10h 08mDelta
Deal found 10/28$254
This Delta deal was found by Cheapflights users on 10/27. 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 11/112:09 pmGEG - RAP
1 stop7h 30mDelta
Sat 11/152:51 pmRAP - GEG
2 stops8h 50mDelta
Deal found 10/27$264
This United Airlines deal was found by Cheapflights users on 10/30. 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 11/142:40 pmJAC - RAP
1 stop4h 03mUnited Airlines
Tue 11/185:15 amRAP - JAC
1 stop4h 30mUnited Airlines
Deal found 10/30$279
This Delta deal was found by Cheapflights users on 10/28. 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 11/135:35 amBOI - RAP
1 stop8h 36mDelta
Mon 11/174:25 pmRAP - BOI
1 stop7h 44mDelta
Deal found 10/28$279
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/135:10 amGEG - RAP
1 stop6h 30mUnited Airlines
Mon 11/178:45 amRAP - GEG
1 stop7h 36mUnited Airlines
Deal found 10/29$279
This Delta deal was found by Cheapflights users on 10/29. 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 11/136:05 amGEG - RAP
1 stop7h 06mDelta
Mon 11/172:51 pmRAP - GEG
2 stops8h 59mDelta
Deal found 10/29$284
This Delta deal was found by Cheapflights users on 10/30. 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 11/141:15 pmGEG - RAP
2 stops8h 24mDelta
Tue 11/1811:07 amRAP - GEG
2 stops8h 51mDelta
Deal found 10/30$289
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/115:10 amGEG - RAP
1 stop4h 55mUnited Airlines
Tue 11/188:45 amRAP - GEG
1 stop5h 00mUnited Airlines
Deal found 10/29$309
This Delta deal was found by Cheapflights users on 10/27. 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 12/186:00 amGEG - RAP
1 stop7h 09mDelta
Mon 1/56:00 amRAP - GEG
1 stop8h 05mDelta
Deal found 10/27$324

Cheap flight deals from Idaho to Rapid City

Keep the following information in mind while searching for Idaho to Rapid City flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(Delta)

One-way from

$120
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$385
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Rapid City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Rapid City flights.
Search Deals
From Idaho to Rapid City
Search Deals
One-way flight from Idaho to Rapid City
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 October 30, 2025.
Use the filters below to find and compare flights from Idaho to Rapid City that are best for you.

Fly from

Idaho

Fly to

Rapid City

Route

Depart

Return

Price

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Fri 12/5

5:35 am-2:09 pm

1 stop8h 34m

Rapid City

Mon 12/8

4:25 pm-12:09 am

1 stop7h 44m

$249

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 12/9

5:25 am-11:26 am

1 stop5h 01m

Rapid City

Tue 12/16

2:55 pm-8:59 pm

1 stop7h 04m

$249

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 12/9

2:15 pm-10:46 pm

1 stop7h 31m

Rapid City

Tue 12/16

2:51 pm-8:10 pm

1 stop6h 19m

$249

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 3/3

6:30 am-3:14 pm

1 stop7h 44m

Rapid City

Sat 3/7

4:00 pm-11:16 pm

1 stop8h 16m

$249

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Tue 11/11

2:31 pm-6:43 pm

1 stop4h 12m

Rapid City

Tue 11/18

5:15 am-9:58 am

1 stop4h 43m

$254

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 11/11

2:09 pm-10:39 pm

1 stop7h 30m

Rapid City

Sat 11/15

2:51 pm-8:03 pm

1 stop6h 12m

$259

JacksonRapid City

JAC - RAP

JACRAP

Jackson Hole

Fri 11/14

2:40 pm-6:43 pm

1 stop4h 03m

Rapid City

Tue 11/18

5:15 am-9:45 am

1 stop4h 30m

$279

BoiseRapid City

BOI - RAP

BOIRAP

Boise Air Term. Gowen Fld

Thu 11/13

5:35 am-2:11 pm

1 stop8h 36m

Rapid City

Mon 11/17

4:25 pm-12:09 am

1 stop7h 44m

$279

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Fri 11/14

2:09 pm-10:39 pm

1 stop7h 30m

Rapid City

Tue 11/18

2:51 pm-8:03 pm

1 stop6h 12m

$279

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Thu 11/13

6:05 am-2:11 pm

1 stop7h 06m

Rapid City

Mon 11/17

2:51 pm-10:50 pm

2 stops8h 59m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 23 results
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Best time to book a flight from Idaho to Rapid City

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

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

Currently, March is the cheapest month in which you can book a flight from Idaho to Rapid City (average of $247). Flying from Idaho to Rapid City in September is currently the most expensive (average of $386). 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 ID to RAP?

Find hourly flight availability from Idaho 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 October 30, 2025.

It’s optimal to fly from Idaho to Rapid City in the evening. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight at noon.

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

Related info for your journey

Find useful and relevant information for your journey from Idaho to Rapid City. 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 into for flights to Rapid City from Idaho?

    Rapid City (RAP) is the airport you will fly into if you book a flight from Idaho to Rapid City. It is only a 9.0 mi journey from Rapid City (RAP) to Rapid City’s city center.

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

    Airlines like Delta and United Airlines fly from Idaho to Rapid City in about 5h 01m. The time it takes to get you to your destination can typically vary by up to 3h 33m. The distance from Idaho to Rapid City is about 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 Idaho to Rapid City?

    The most popular flight routes from Idaho to Rapid City are Boise Air Term. Gowen Fld - Rapid City, Spokane - Rapid City and Idaho Falls Fanning Field - Rapid City.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Idaho to Rapid City (average of $247). Flying from Idaho to Rapid City in September is currently the most expensive (average of $386). 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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Alternative routes for Idaho to Rapid City

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Idaho to Rapid City

Discover the top 2 airlines that operate flights from Idaho 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$356FlexibilityNo cancel feeOn-time69%
DeltaCheapest$248Average$318FlexibilityNo cancel feeOn-timeN/A

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