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Idaho Falls

$429+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — IDA
Jun 15 — Jun 221
Mon 6/15
Mon 6/22
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 May 16, 2026.

This United Airlines deal was found by Cheapflights users on 5/15. 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 8/2511:22 am
RAP
-
IDA
1 stop4h 01m
United Airlines
Sat 8/295:53 pm
IDA
-
RAP
1 stop4h 35m
United Airlines
Deal found 5/15$429
This United Airlines deal was found by Cheapflights users on 5/12. 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 6/55:00 am
RAP
-
IDA
1 stop4h 50m
United Airlines
Tue 6/92:30 pm
IDA
-
RAP
1 stop4h 43m
United Airlines
Deal found 5/12$583
This Delta deal was found by Cheapflights users on 5/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/52:36 pm
RAP
-
IDA
2 stops8h 06m
Delta
Tue 6/93:25 pm
IDA
-
RAP
2 stops7h 13m
Delta
Deal found 5/15$1,802

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 May 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$429
(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
Search Deals

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 May 16, 2026.
Use the filters below to find and compare flights from Rapid City to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 8/25

11:22 am-3:23 pm

1 stop4h 01m

Idaho Falls Fanning Field

Sat 8/29

5:53 pm-10:28 pm

1 stop4h 35m

$429

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 6/5

5:00 am-9:50 am

1 stop4h 50m

Idaho Falls Fanning Field

Tue 6/9

2:30 pm-8:24 pm

1 stop5h 54m

$583

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 6/5

2:36 pm-10:42 pm

2 stops8h 06m

Idaho Falls Fanning Field

Tue 6/9

3:25 pm-10:38 pm

2 stops7h 13m

$1,802

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/15

Sorted by cheapest first

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 FlightHub the most. FlightHub 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 May 16, 2026.
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
9,726 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,726 reviews
United Airlines
7.4
Good
9,726 reviews

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 can get you from Rapid City to Idaho Falls in just under 4h 01m. Your travel time can differ by up to . The distance from Rapid City to Idaho Falls is about 450 mi.

  • 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 $152 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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Alternative routes for Rapid City to Idaho Falls

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 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 May 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$152Average$371FlexibilityNo cancel feeOn-time69%

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