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Cheap flights from Rapid City to Idaho Falls from $204

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rapid City to Idaho Falls departing on 7/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Rapid City to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:00 pm - 9:56 am
RAP
-
IDA
21h 56m
1 stop
United Airlines Logo
2:35 pm - 8:34 pm
IDA
-
RAP
5h 59m
1 stop
$513United Airlines
Wed, Mar 11 - Sun, Mar 15
United Airlines Logo
7:00 am - 1:30 pm
RAP
-
IDA
6h 30m
1 stop
United Airlines Logo
2:35 pm - 11:05 am
IDA
-
RAP
20h 30m
1 stop
$643United Airlines
Fri, Mar 13 - Tue, Mar 17
Delta Logo
11:03 am - 6:15 pm
RAP
-
IDA
7h 12m
2 stops
Delta Logo
5:45 am - 3:18 pm
IDA
-
RAP
9h 33m
2 stops
$1,641Delta
Fri, Mar 13 - Tue, Mar 17

United Airlines flights from Rapid City to Idaho Falls

Our best United Airlines deals on Rapid City to Idaho Falls flight tickets
United Airlines
Mar 11
RAP12:00 pmRapid City
21h 56m
1 stop
IDA9:56 amIdaho Falls Fanning Field
Mar 15
IDA2:35 pmIdaho Falls Fanning Field
5h 59m
1 stop
RAP8:34 pmRapid City
$513
United Airlines
Mar 13
RAP7:00 amRapid City
6h 30m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
Mar 17
IDA2:35 pmIdaho Falls Fanning Field
20h 30m
1 stop
RAP11:05 amRapid City
$643

momondo 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, momondo users made 832,500 searches. Data last updated February 27, 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

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Wed 3/11

12:00 pm-9:56 am

1 stop21h 56m

Idaho Falls Fanning Field

Sun 3/15

2:35 pm-8:34 pm

1 stop5h 59m

$513

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 3/13

7:00 am-1:30 pm

1 stop6h 30m

Idaho Falls Fanning Field

Tue 3/17

2:35 pm-11:05 am

1 stop20h 30m

$643

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 3/13

11:03 am-6:15 pm

2 stops7h 12m

Idaho Falls Fanning Field

Tue 3/17

5:45 am-3:18 pm

2 stops9h 33m

$1,641

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sun 7/19

9:50 pm-4:00 pm

1 stop18h 10m

$204

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sun 7/19

9:50 pm-9:57 pm

2 stops24h 07m

$332

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Rapid City to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Rapid City to Idaho Falls Fanning Field?

Allegiant Air is the most popular carrier operating from Rapid City to Idaho Falls Fanning Field

When to book flights from Rapid City to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Rapid City to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Rapid City to Idaho Falls (RAP to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rapid City to Idaho Falls

Fastest flight time

6h 30m

Direct flights

None
The fastest flight from Rapid City to Idaho Falls takes 6h 30m
There are no direct flights from Rapid City to Idaho Falls. There are no popular flight routes from Rapid City to Idaho Falls.
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  • How far is Rapid City to Idaho Falls Fanning Field by plane?

    A flight from Rapid City to Idaho Falls Fanning Field will travel around 440.7 mi. In terms of flight time, this usually takes a little over 6h 30m.

  • When did momondo last update prices for flights from Rapid City Airport to Idaho Falls Fanning Field Airport?

    Prices for flights from Rapid City Airport to Idaho Falls Fanning Field Airport are updated daily.

  • How many operators does momondo search for flights from Rapid City Airport to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from Rapid City Airport to Idaho Falls Fanning Field Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rapid City Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Rapid City to Idaho Falls?

Best airlines flying from Rapid City to Idaho Falls

Compare and see reviews for airlines that fly from Rapid City to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,349 reviews
Search United Airlines flights

Traveling to a place near Idaho Falls?

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

Why use momondo?

Why should I use momondo to find a flight deal from Rapid City to Idaho Falls?

Finding the right flight to Idaho Falls from Rapid City is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho Falls quick and easy, saving you time and money.

Can I find flights from Rapid City to Idaho Falls with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Rapid City to Idaho Falls flights to just show those with flexible booking policies.

How can momondo help me find flights from Rapid City to Idaho Falls?

momondo helps you find the best flight between Rapid City and Idaho Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Rapid City to Idaho Falls right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Rapid City to Idaho Falls flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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