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Cheap flights from Rapid City to Idaho Falls from $289

This is the cheapest round-trip 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 3/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
8:35 am - 1:34 pmRAP-IDA
4h 59m1 stop
United Airlines Logo
4:19 pm - 10:11 pmIDA-RAP
5h 52m1 stop
$289United Airlines
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Wed, Mar 25 - Sat, Mar 28
United Airlines Logo
10:45 am - 9:28 amRAP-IDA
22h 43m1 stop
United Airlines Logo
2:35 pm - 9:18 amIDA-RAP
18h 43m1 stop
$502United Airlines
Find Deal
Mon, Apr 27 - Fri, May 1
United Airlines Logo
8:45 am - 3:22 pmRAP-IDA
6h 37m1 stop
United Airlines Logo
5:00 am - 7:12 pmIDA-RAP
14h 12m1 stop
$548United Airlines
Find Deal
Fri, Dec 19 - Sat, Dec 20
American Airlines Logo
5:51 am - 9:57 pmRAP-IDA
16h 06m2 stops
American Airlines Logo
8:23 am - 8:15 pmIDA-RAP
11h 52m2 stops
$931American Airlines
Find Deal
Wed, Mar 25 - Sat, Mar 28
United Airlines Logo
5:48 pm - 9:28 amRAP-IDA
15h 40m1 stop
United Airlines Logo
2:35 pm - 10:53 amIDA-RAP
20h 18m2 stops
$1,064United Airlines
Find Deal
Mon, Apr 27 - Fri, May 1
Delta Logo
10:40 am - 6:14 pmRAP-IDA
7h 34m2 stops
Delta Logo
6:10 am - 3:10 pmIDA-RAP
9h 00m2 stops
$1,611Delta
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Mon, Apr 27 - Fri, May 1
Delta Logo
6:05 am - 6:26 pmRAP-IDA
12h 21m2 stops
Delta Logo
5:55 am - 3:34 pmIDA-RAP
9h 39m2 stops
$1,741Delta
Find Deal
Fri, Dec 19 - Sat, Dec 20

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 25
RAP8:35 amRapid City
4h 59m
1 stop
IDA1:34 pmIdaho Falls Fanning Field
Mar 28
IDA4:19 pmIdaho Falls Fanning Field
5h 52m
1 stop
RAP10:11 pmRapid City
$289
Find similar
United Airlines
Apr 27
RAP10:45 amRapid City
22h 43m
1 stop
IDA9:28 amIdaho Falls Fanning Field
May 1
IDA2:35 pmIdaho Falls Fanning Field
18h 43m
1 stop
RAP9:18 amRapid City
$502
Find similar
United Airlines
Dec 19
RAP8:45 amRapid City
6h 37m
1 stop
IDA3:22 pmIdaho Falls Fanning Field
Dec 20
IDA5:00 amIdaho Falls Fanning Field
14h 12m
1 stop
RAP7:12 pmRapid City
$548
Find similar

Delta flights from Rapid City to Idaho Falls

Our best Delta deals on Rapid City to Idaho Falls flight tickets
Delta
Apr 27
RAP10:40 amRapid City
7h 34m
2 stops
IDA6:14 pmIdaho Falls Fanning Field
May 1
IDA6:10 amIdaho Falls Fanning Field
9h 00m
2 stops
RAP3:10 pmRapid City
$1,611
Find similar
Delta
Dec 19
RAP6:05 amRapid City
12h 21m
2 stops
IDA6:26 pmIdaho Falls Fanning Field
Dec 20
IDA5:55 amIdaho Falls Fanning Field
9h 39m
2 stops
RAP3:34 pmRapid City
$1,741
Find similar

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 November 6, 2025.
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 3/25

8:35 am-1:34 pm

1 stop4h 59m

Idaho Falls Fanning Field

Sat 3/28

4:19 pm-10:11 pm

1 stop5h 52m

$289

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 4/27

10:45 am-9:28 am

1 stop22h 43m

Idaho Falls Fanning Field

Fri 5/1

2:35 pm-9:18 am

1 stop18h 43m

$502

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 12/19

8:45 am-3:22 pm

1 stop6h 37m

Idaho Falls Fanning Field

Sat 12/20

5:00 am-7:12 pm

1 stop14h 12m

$548

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Wed 3/25

5:51 am-9:57 pm

2 stops16h 06m

Idaho Falls Fanning Field

Sat 3/28

8:23 am-8:15 pm

2 stops11h 52m

$931

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 4/27

5:48 pm-9:28 am

1 stop15h 40m

Idaho Falls Fanning Field

Fri 5/1

2:35 pm-10:53 am

2 stops20h 18m

$1,064

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 4/27

10:40 am-6:14 pm

2 stops7h 34m

Idaho Falls Fanning Field

Fri 5/1

6:10 am-3:10 pm

2 stops9h 00m

$1,611

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Fri 12/19

6:05 am-6:26 pm

2 stops12h 21m

Idaho Falls Fanning Field

Sat 12/20

5:55 am-3:34 pm

2 stops9h 39m

$1,741

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Idaho Falls from

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 day to depart on your flight to Idaho Falls?

Our data shows that Friday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $309. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Wednesday is $670.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is in the morning. Flights from Rapid City to Idaho Falls during this time can be as low as $374. Try not to purchase tickets at noon because they tend to be around $670. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Direct flights

None
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 4h 59m.

  • 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 $288Free CancellationRating
7.4
9,007 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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