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Idaho Falls

$321+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — IDA
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
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Cheap 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 April 24, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$321
(United Airlines)
Provider with most accurate pricing for Rapid City-Idaho Falls Fanning Field flight deals.
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Provider most trusted by Cheapflights users for Rapid City-Idaho Falls Fanning Field flights.
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From Rapid City to Idaho Falls Fanning Field
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Find 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 April 24, 2025.

This United Airlines deal was found by Cheapflights users on 4/23. 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 5/85:25 amRAP - IDA
1 stop4h 07mUnited Airlines
Mon 5/122:40 pmIDA - RAP
1 stop5h 46mUnited Airlines
Deal found 4/23$321
This Delta deal was found by Cheapflights users on 4/23. 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 5/86:33 amRAP - IDA
2 stops11h 37mDelta
Mon 5/1212:30 pmIDA - RAP
2 stops10h 04mDelta
Deal found 4/23$1,611

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 April 24, 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

Thu 5/8

5:25 am-9:32 am

1 stop4h 07m

Idaho Falls Fanning Field

Mon 5/12

2:40 pm-8:26 pm

1 stop5h 46m

$321

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Thu 5/8

6:33 am-6:10 pm

2 stops11h 37m

Idaho Falls Fanning Field

Mon 5/12

12:30 pm-10:34 pm

2 stops10h 04m

$1,611

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

  • Most accurate provider: When it comes to deals on Rapid City-Idaho Falls flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Rapid City-Idaho Falls flight deals on Cheapflights vs. Expedia <90% 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.

Cheapflights Insights

Everything you need to know about your flight from Rapid City to Idaho Falls

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 April 24, 2025.
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,685 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines flying 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 $321 on this airline. An additional option worth looking into is Delta, starting at $1,611.

  • 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.

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

    Currently, October is the cheapest month in which you can book a flight from Rapid City to Idaho Falls (average of $380). Flying from Rapid City to Idaho Falls in July is currently the most expensive (average of $628). 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?

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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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$255Average$404FlexibilityNo cancel feeOn-time69%

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