What are the cheapest airlines flying from Idaho Falls to Rapid City round-trip?

According to our current data, United Airlines ($276), and Delta ($1,611) offers the cheapest pricing from Idaho Falls to Rapid City. You may be able to fly from Idaho Falls to Rapid City for 25% less than the average price by searching for these airlines.

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

Currently, January is the cheapest month in which you can book a flight from Idaho Falls to Rapid City (average of $348). Flying from Idaho Falls 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 day to fly from Idaho Falls to Rapid City?

Travelers seeking maximum savings on their Idaho Falls to Rapid City flight should consider departing on Friday afternoons when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Rapid City ranges from 0.3 - 3.2 inches per month. May is typically the wettest month, when rainfall can reach 3.2 in. January is typically the driest time to visit Rapid City when rainfall is around 0.3 in.

If weather is an important factor for your trip to Rapid City, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

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

Wednesday flights are generally found to be more expensive for flights from Idaho Falls to Rapid City. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Rapid City.

What is the cheapest month to fly from Idaho Falls to Rapid City?

February is one of the best times of the year to fly to Rapid City from Idaho Falls. Prices for February average $369 per person but you can even find prices for as low as $228. The most expensive prices can be found in the month of June. Opting for a February flight can save you 73% on your journey compared to booking in June

What is the cheapest time of day to fly from IDA to RAP?

When flying from Idaho Falls to Rapid City, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

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

Yes. Cheapflights offers flight deals from Idaho Falls 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.

$276+ Flights from Idaho Falls to Rapid City

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Cheap flight deals from Idaho Falls to Rapid City

Round-trip from	$276 (United Airlines)
Popular in	June
Cheapest in	February
Average price	$558

From Idaho Falls Fanning Field to Rapid City

Search Deals

Highest demand for flights based on searches. 26% potential increase in price ($129 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease ($31 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Idaho Falls to Rapid City

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

Wed 8/136:03 pmIDA - RAP

1 stop3h 57mUnited Airlines

Sun 8/175:30 amRAP - IDA

1 stop4h 14mUnited Airlines

Deal found 7/29

$276

Wed 8/136:00 amIDA - RAP

2 stops7h 44mDelta

Sun 8/176:26 amRAP - IDA

2 stops11h 45mDelta

Deal found 7/29

$1,611

Best flights from Idaho Falls to Rapid City
Discover carefully curated flight deals from Idaho Falls to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2025.

Wed 8/136:03 pmIDA - RAP

1 stop3h 57mUnited Airlines

Sun 8/175:30 amRAP - IDA

1 stop4h 14mUnited Airlines

Deal found 7/29

$276

Wed 8/136:00 amIDA - RAP

2 stops7h 44mDelta

Sun 8/176:26 amRAP - IDA

2 stops11h 45mDelta

Deal found 7/29

$1,611

Last-minute flights from Idaho Falls to Rapid City
Discover last-minute flight deals from Idaho Falls to Rapid City. Data last updated July 30, 2025 and is based on user searches.

Wed 8/66:03 pmIDA - RAP

1 stop3h 57mUnited Airlines

Sat 8/95:59 pmRAP - IDA

1 stop4h 52mUnited Airlines

Deal found 7/29

$646

Wed 8/136:03 pmIDA - RAP

1 stop3h 57mUnited Airlines

Sun 8/175:30 amRAP - IDA

1 stop4h 14mUnited Airlines

Deal found 7/29

$276

Wed 8/136:00 amIDA - RAP

2 stops7h 44mDelta

Sun 8/176:26 amRAP - IDA

2 stops11h 45mDelta

Deal found 7/29

$1,611

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Wed 8/13

6:03 pm-10:00 pm

1 stop3h 57m

Rapid City

Sun 8/17

5:30 am-9:44 am

1 stop4h 14m

$276

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Wed 8/13

6:00 am-1:44 pm

2 stops7h 44m

Rapid City

Sun 8/17

6:26 am-6:11 pm

2 stops11h 45m

$1,611

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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

Have a flexible travel schedule? Discover the best time to fly to Rapid City from Idaho Falls 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 Rapid City

Read through reviews of airlines operating flights from Idaho Falls to Rapid City, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,980 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,896 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Idaho Falls to Rapid City round-trip?
According to our current data, United Airlines ($276), and Delta ($1,611) offers the cheapest pricing from Idaho Falls to Rapid City. You may be able to fly from Idaho Falls to Rapid City for 25% less than the average price by searching for these airlines.
Can I find deals for flights from Idaho Falls to Rapid City that include hotel bookings?
Yes. In addition to deals on Idaho Falls to Rapid City flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho Falls 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 Falls to Rapid City.
Can I find deals for business class flights from Idaho Falls to Rapid City?
Yes. Cheapflights offers flight deals from Idaho Falls 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 Falls to Rapid City?
Currently, January is the cheapest month in which you can book a flight from Idaho Falls to Rapid City (average of $348). Flying from Idaho Falls 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

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Top airline flying from Idaho Falls to Rapid City

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$228	Average$298	FlexibilityNo cancel fee	On-time69%

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$276+ Cheap flights from Idaho Falls to Rapid City (IDA - 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho Falls to Rapid City with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Idaho Falls to Rapid City

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Idaho Falls to Rapid City

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

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

Cheapflights Fare Finder

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

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

Have a flexible travel schedule? Discover the best time to fly to Rapid City from Idaho Falls with our price prediction graph.

Reviews of airlines servicing Rapid City

Read through reviews of airlines operating flights from Idaho Falls to Rapid City, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls 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 are the cheapest airlines flying from Idaho Falls to Rapid City round-trip?

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

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

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

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

Traveling to a place near Rapid City?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho Falls to Rapid City

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Idaho Falls to Rapid City

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Book with Flexibility

Travel Smart

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