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Idaho Falls

$249+ Cheap flights from Rapid City to Idaho Falls (RAP - IDA)

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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — IDA
Jan 29 — Feb 51
Thu 1/29
Thu 2/5
1 adult, Economy
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Cheap flight deals from Rapid City to Idaho Falls

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

This United Airlines deal was found by Cheapflights users on 12/28. 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.
Wed 12/318:45 amRAP - IDA
1 stop6h 37mUnited Airlines
Sat 1/35:00 amIDA - RAP
1 stop6h 32mUnited Airlines
Deal found 12/28$444

Find flight deals from Rapid City to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to Idaho Falls (IDA). 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 December 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$249
(United Airlines)
Provider with most accurate pricing for Rapid City-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rapid City-Idaho Falls Fanning Field flights.
Search Deals
From Rapid City to Idaho Falls Fanning Field
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Cheapflights Fare Finder

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

Fly from

Rapid City

Fly to

Idaho Falls

Route

Depart

Return

Price

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 1/27

7:00 am-1:30 pm

1 stop6h 30m

Idaho Falls Fanning Field

Tue 2/3

2:40 pm-8:32 pm

1 stop5h 52m

$249

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 1/13

8:30 am-3:31 pm

1 stop7h 01m

Idaho Falls Fanning Field

Sat 1/17

2:40 pm-8:32 pm

1 stop5h 52m

$314

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 1/27

6:00 am-5:51 pm

2 stops11h 51m

Idaho Falls Fanning Field

Tue 2/3

1:15 pm-10:28 pm

2 stops9h 13m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/28

Compare providers for flights from Rapid City to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Rapid City to Idaho Falls in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Rapid City-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rapid City-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rapid City-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rapid City-Idaho Falls flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Rapid City-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Rapid City to Idaho Falls

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

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Falls. Reviews last updated December 30, 2025.
Read reviews from past customers who have flown United Airlines from Rapid City to Idaho Falls. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,121 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,121 reviews
United Airlines
7.4
Good
9,121 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

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

    United Airlines and Delta can get you from Rapid City to Idaho Falls in just under 6h 30m. Your travel time can differ by up to 5h 21m. The distance from Rapid City to Idaho Falls is about 450 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Rapid City to Idaho Falls round-trip?

    Our cheapest airline available from Rapid City to Idaho Falls is United Airlines. Our recent data shows that you can find tickets from as low as $288 on this airline.

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

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

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

    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 Falls.

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

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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Top airline flying from Rapid City to Idaho Falls

Discover the top airline that operate flights from Rapid City to Idaho Falls. 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 December 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$404FlexibilityNo cancel feeOn-time69%

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