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Rapid City

$239+ Cheap flights from Idaho to Rapid City (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 Idaho to Rapid City

Keep the following information in mind while searching for Idaho to Rapid City flight deals. Data was last updated September 15, 2025.

Round-trip from

$239
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$414
From Idaho to Rapid City
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 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 9/305:56 pmJAC - RAP
1 stop4h 16mUnited Airlines
Sat 10/45:30 amRAP - JAC
1 stop4h 12mUnited Airlines
Deal found 9/15$239
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 amIDA - RAP
1 stop4h 10mUnited Airlines
Sat 10/45:30 amRAP - IDA
1 stop4h 18mUnited Airlines
Deal found 9/15$239
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/282:17 pmGEG - RAP
1 stop7h 19mDelta
Tue 11/46:05 amRAP - GEG
1 stop8h 00mDelta
Deal found 9/14$249
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 9/15. 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 9/305:05 amGEG - RAP
1 stop4h 52mUnited Airlines
Sat 10/411:15 amRAP - GEG
1 stop4h 55mUnited Airlines
Deal found 9/15$329
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 9/295:05 amGEG - RAP
1 stop4h 52mUnited Airlines
Fri 10/33:20 pmRAP - GEG
1 stop6h 04mUnited Airlines
Deal found 9/14$381
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 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/292:23 pmGEG - RAP
1 stop7h 07mDelta
Fri 10/32:27 pmRAP - GEG
2 stops10h 36mDelta
Deal found 9/14$471
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 9/287:00 amJAC - RAP
1 stop5h 37mUnited Airlines
Thu 10/23:20 pmRAP - JAC
1 stop5h 29mUnited Airlines
Deal found 9/13$823
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/63:23 pmTWF - RAP
2 stops18h 59mDelta
Tue 12/911:02 amRAP - TWF
2 stops11h 33mDelta
Deal found 9/14$843
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.
Fri 9/264:18 pmJAC - RAP
1 stop5h 54mUnited Airlines
Sun 9/288:30 amRAP - JAC
1 stop12h 19mUnited Airlines
Deal found 9/13$848

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 September 15, 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

JacksonRapid City

JAC - RAP

JACRAP

Jackson Hole

Tue 9/30

5:56 pm-10:12 pm

1 stop4h 16m

Rapid City

Sat 10/4

5:30 am-9:42 am

1 stop4h 12m

$239

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Tue 9/30

5:00 am-9:10 am

1 stop4h 10m

Rapid City

Sat 10/4

5:30 am-9:48 am

1 stop4h 18m

$239

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 10/28

2:17 pm-10:36 pm

1 stop7h 19m

Rapid City

Tue 11/4

6:05 am-1:05 pm

1 stop8h 00m

$249

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

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 3/3

2:05 pm-10:14 pm

1 stop7h 09m

Rapid City

Sat 3/7

4:00 pm-11:16 pm

1 stop8h 16m

$274

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Tue 9/30

5:05 am-10:57 am

1 stop4h 52m

Rapid City

Sat 10/4

11:15 am-3:10 pm

1 stop4h 55m

$329

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

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sat 3/7

2:35 pm-8:33 pm

1 stop5h 58m

Rapid City

Wed 3/11

5:30 am-9:28 am

1 stop3h 58m

$349

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Mon 9/29

5:05 am-10:57 am

1 stop4h 52m

Rapid City

Fri 10/3

3:20 pm-8:24 pm

1 stop6h 04m

$381

HaileyRapid City

SUN - RAP

SUNRAP

Hailey Sun Valley-Friedman

Fri 3/6

2:29 pm-8:33 pm

1 stop6h 04m

Rapid City

Tue 3/10

7:05 am-1:44 pm

1 stop6h 39m

$389

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 21 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, January is the cheapest month in which you can book a flight from Idaho to Rapid City (average of $348). Flying from Idaho 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 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Rapid City as you normally would.

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 United Airlines and Delta fly from Idaho to Rapid City in about 4h 16m. The time it takes to get you to your destination can typically vary by up to 3h 03m. The distance from Idaho to Rapid City is about 384 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 Spokane - Rapid City, Boise Air Term. Gowen Fld - Rapid City and Jackson Hole - 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, January is the cheapest month in which you can book a flight from Idaho to Rapid City (average of $348). Flying from Idaho 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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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$359FlexibilityNo cancel feeOn-time69%
DeltaCheapest$248Average$283FlexibilityNo cancel feeOn-timeN/A

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