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Cheap flights from Idaho Falls to Rapid City from $309

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Rapid City departing on 5/4. 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 Idaho Falls to Rapid City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:31 pm - 8:28 pm
IDA
-
RAP
5h 57m
1 stop
United Airlines Logo
5:20 am - 9:55 am
RAP
-
IDA
4h 35m
1 stop
$309United Airlines
Mon, May 4 - Sat, May 9
United Airlines Logo
2:31 pm - 7:15 pm
IDA
-
RAP
4h 44m
1 stop
United Airlines Logo
5:20 am - 9:55 am
RAP
-
IDA
4h 35m
1 stop
$394United Airlines
Sat, May 2 - Thu, May 7
United Airlines Logo
2:31 pm - 8:28 pm
IDA
-
RAP
5h 57m
1 stop
United Airlines Logo
4:13 pm - 9:55 am
RAP
-
IDA
17h 42m
1 stop
$398United Airlines
Mon, May 4 - Fri, May 8
Allegiant Air Logo
5:46 pm - 10:42 am
IDA
-
RAP
16h 56m
1 stop
Allegiant Air Logo
5:57 pm - 3:27 pm
RAP
-
IDA
21h 30m
1 stop
$445Allegiant Air
Sun, May 3 - Thu, May 7
Allegiant Air Logo
5:46 pm - 10:42 am
IDA
-
RAP
16h 56m
1 stop
Allegiant Air Logo
5:57 pm - 3:27 pm
RAP
-
IDA
21h 30m
1 stop
$449Allegiant Air
Sun, May 3 - Sun, May 10
Allegiant Air Logo
5:46 pm - 10:42 am
IDA
-
RAP
16h 56m
1 stop
Allegiant Air Logo
5:57 pm - 3:27 pm
RAP
-
IDA
21h 30m
1 stop
$453Allegiant Air
Thu, May 7 - Sun, May 10
United Airlines Logo
5:26 pm - 9:46 pm
IDA
-
RAP
28h 20m
2 stops
United Airlines Logo
5:20 am - 9:55 am
RAP
-
IDA
4h 35m
1 stop
$458United Airlines
Sat, May 2 - Tue, May 5
United Airlines Logo
5:26 pm - 7:15 pm
IDA
-
RAP
25h 49m
1 stop
United Airlines Logo
5:20 am - 9:55 am
RAP
-
IDA
4h 35m
1 stop
$473United Airlines
Fri, May 1 - Thu, May 7
United Airlines Logo
2:31 pm - 8:28 pm
IDA
-
RAP
5h 57m
1 stop
United Airlines Logo
7:00 am - 1:25 pm
RAP
-
IDA
6h 25m
1 stop
$477United Airlines
Mon, May 4 - Thu, May 7
United Airlines Logo
5:26 pm - 9:46 pm
IDA
-
RAP
28h 20m
2 stops
United Airlines Logo
5:20 am - 9:55 am
RAP
-
IDA
4h 35m
1 stop
$478United Airlines
Wed, May 6 - Sat, May 9

United Airlines flights from Idaho Falls to Rapid City

Our best United Airlines deals on Idaho Falls to Rapid City flight tickets
United Airlines
May 4
IDA2:31 pmIdaho Falls Fanning Field
5h 57m
1 stop
RAP8:28 pmRapid City
May 9
RAP5:20 amRapid City
4h 35m
1 stop
IDA9:55 amIdaho Falls Fanning Field
$309
United Airlines
May 2
IDA2:31 pmIdaho Falls Fanning Field
4h 44m
1 stop
RAP7:15 pmRapid City
May 7
RAP5:20 amRapid City
4h 35m
1 stop
IDA9:55 amIdaho Falls Fanning Field
$394
United Airlines
May 4
IDA2:31 pmIdaho Falls Fanning Field
5h 57m
1 stop
RAP8:28 pmRapid City
May 8
RAP4:13 pmRapid City
17h 42m
1 stop
IDA9:55 amIdaho Falls Fanning Field
$398

Allegiant Air flights from Idaho Falls to Rapid City

Our best Allegiant Air deals on Idaho Falls to Rapid City flight tickets
Allegiant Air
May 3
IDA5:46 pmIdaho Falls Fanning Field
16h 56m
1 stop
RAP10:42 amRapid City
May 7
RAP5:57 pmRapid City
21h 30m
1 stop
IDA3:27 pmIdaho Falls Fanning Field
$445
Allegiant Air
May 3
IDA5:46 pmIdaho Falls Fanning Field
16h 56m
1 stop
RAP10:42 amRapid City
May 10
RAP5:57 pmRapid City
21h 30m
1 stop
IDA3:27 pmIdaho Falls Fanning Field
$449
Allegiant Air
May 7
IDA5:46 pmIdaho Falls Fanning Field
16h 56m
1 stop
RAP10:42 amRapid City
May 10
RAP5:57 pmRapid City
21h 30m
1 stop
IDA3:27 pmIdaho Falls Fanning Field
$453

momondo Fare Finder

 
Customize your flight search to find flights from Idaho Falls to Rapid City 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 March 1, 2026.
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

Mon 5/4

2:31 pm-8:28 pm

1 stop5h 57m

Rapid City

Sat 5/9

5:20 am-9:55 am

1 stop4h 35m

$309

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sat 5/2

2:31 pm-7:15 pm

1 stop4h 44m

Rapid City

Thu 5/7

5:20 am-9:55 am

1 stop4h 35m

$394

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Mon 5/4

2:31 pm-8:28 pm

1 stop5h 57m

Rapid City

Fri 5/8

4:13 pm-9:55 am

1 stop17h 42m

$398

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sun 5/3

5:46 pm-10:42 am

1 stop16h 56m

Rapid City

Thu 5/7

5:57 pm-3:27 pm

1 stop21h 30m

$445

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sun 5/3

5:46 pm-10:42 am

1 stop16h 56m

Rapid City

Sun 5/10

5:57 pm-3:27 pm

1 stop21h 30m

$449

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Thu 5/7

5:46 pm-10:42 am

1 stop16h 56m

Rapid City

Sun 5/10

5:57 pm-3:27 pm

1 stop21h 30m

$453

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Sat 5/2

5:26 pm-9:46 pm

2 stops28h 20m

Rapid City

Tue 5/5

5:20 am-9:55 am

1 stop4h 35m

$458

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Fri 5/1

5:26 pm-7:15 pm

1 stop25h 49m

Rapid City

Thu 5/7

5:20 am-9:55 am

1 stop4h 35m

$473

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Mon 5/4

2:31 pm-8:28 pm

1 stop5h 57m

Rapid City

Thu 5/7

7:00 am-1:25 pm

1 stop6h 25m

$477

Idaho FallsRapid City

IDA - RAP

IDARAP

Idaho Falls Fanning Field

Wed 5/6

5:26 pm-9:46 pm

2 stops28h 20m

Rapid City

Sat 5/9

5:20 am-9:55 am

1 stop4h 35m

$478

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Idaho Falls to Rapid City

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

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

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

Fastest flight time

5h 57m

Direct flights

None
The fastest flight from Idaho Falls to Rapid City takes 5h 57m
There are no direct flights from Idaho Falls to Rapid City. There are no popular flight routes from Idaho Falls to Rapid City.
Search flight deals

  • How far is Idaho Falls Fanning Field to Rapid City by plane?

    Rapid City is 440.7 mi away from Idaho Falls Fanning Field. Flights usually cover this in 5h 57m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Idaho Falls Fanning Field Airport to Rapid City Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Rapid City Airport.

  • What documentation or ID do you need to fly to Rapid City Airport?

    The necessary travel and health documents for your Rapid City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Idaho Falls to Rapid City

Compare and see reviews for airlines that fly from Idaho Falls to Rapid City with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $298Free CancellationRating
7.4
9,370 reviews
Search United Airlines flights

  • How do I get Price Alerts for flights from Idaho Falls to Rapid City?

    Confirm your travel details to search for the latest offers for flights from Idaho Falls to Rapid City. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Idaho Falls to Rapid City with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
Deadwood
Keystone
Sturgis
Spearfish
Custer
Hill City
Wall
Hot Springs

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Idaho Falls to Rapid City. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Idaho Falls to Rapid City with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Idaho Falls to Rapid City flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Rapid City from Idaho Falls. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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