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Idaho Falls

$192+ Cheap flights from Rapid City to Idaho Falls (RAP - IDA)

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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — IDA
Jul 29 — Aug 51
Wed 7/29
Wed 8/5
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 June 29, 2026.

This United Airlines deal was found by Cheapflights users on 6/28. 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 10/285:00 am
RAP
-
IDA
1 stop4h 53m
United Airlines
Sat 10/312:32 pm
IDA
-
RAP
1 stop6h 13m
United Airlines
Deal found 6/28$359
This United Airlines deal was found by Cheapflights users on 6/29. 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 7/145:00 am
RAP
-
IDA
1 stop4h 50m
United Airlines
Sat 7/184:14 pm
IDA
-
RAP
1 stop4h 10m
United Airlines
Deal found 6/29$455
This United Airlines deal was found by Cheapflights users on 6/24. 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.
Sat 7/411:20 am
RAP
-
IDA
1 stop4h 17m
United Airlines
Tue 7/74:14 pm
IDA
-
RAP
1 stop4h 10m
United Airlines
Deal found 6/24$504
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Mon 7/137:00 am
RAP
-
IDA
1 stop6h 25m
United Airlines
Fri 7/175:54 pm
IDA
-
RAP
1 stop25h 30m
United Airlines
Deal found 6/27$538
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Mon 7/275:00 am
RAP
-
IDA
1 stop4h 50m
United Airlines
Thu 7/302:30 pm
IDA
-
RAP
1 stop6h 08m
United Airlines
Deal found 6/28$728

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 June 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(United Airlines)

One-way from

$192
(Kiwi.com)
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
One-way flight 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 June 29, 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

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Wed 10/28

5:00 am-9:53 am

1 stop4h 53m

Idaho Falls Fanning Field

Sat 10/31

2:32 pm-8:45 pm

1 stop6h 13m

$359

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 7/13

7:00 am-1:25 pm

1 stop6h 25m

Idaho Falls Fanning Field

Fri 7/17

5:54 pm-7:24 pm

1 stop25h 30m

$538
Quickest round-trip

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 7/27

5:00 am-9:50 am

1 stop4h 50m

Idaho Falls Fanning Field

Thu 7/30

2:30 pm-8:38 pm

1 stop6h 08m

$728
Cheapest one-way
Quickest one-way

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Wed 9/30

1:37 pm-9:53 am

2 stops20h 16m

$588

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

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 June.
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.

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 53m. Your travel time can differ by up to . The distance from Rapid City to Idaho Falls is about 450 mi.

  • 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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