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Cheap flights from Rapid City to Idaho Falls from $192

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 9/30. 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
1 adult, Economy, 0 bags

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
5:00 am - 9:53 am
RAP
-
IDA
4h 53m
1 stop
United Airlines Logo
2:32 pm - 8:45 pm
IDA
-
RAP
6h 13m
1 stop
$359United Airlines
Wed, Oct 28 - Sat, Oct 31
United Airlines Logo
5:00 am - 9:50 am
RAP
-
IDA
4h 50m
1 stop
United Airlines Logo
4:14 pm - 8:24 pm
IDA
-
RAP
4h 10m
1 stop
$455United Airlines
Tue, Jul 14 - Sat, Jul 18
United Airlines Logo
7:00 am - 1:25 pm
RAP
-
IDA
6h 25m
1 stop
United Airlines Logo
5:54 pm - 7:24 pm
IDA
-
RAP
25h 30m
1 stop
$538United Airlines
Mon, Jul 13 - Fri, Jul 17
United Airlines Logo
5:00 am - 9:53 am
RAP
-
IDA
4h 53m
1 stop
United Airlines Logo
2:32 pm - 11:53 am
IDA
-
RAP
21h 21m
2 stops
$589United Airlines
Wed, Oct 28 - Sat, Oct 31
United Airlines Logo
11:20 am - 5:19 pm
RAP
-
IDA
5h 59m
1 stop
United Airlines Logo
4:14 pm - 10:24 am
IDA
-
RAP
18h 10m
2 stops
$598United Airlines
Mon, Jul 13 - Fri, Jul 17
United Airlines Logo
7:00 am - 1:25 pm
RAP
-
IDA
6h 25m
1 stop
United Airlines Logo
10:35 am - 5:12 pm
IDA
-
RAP
6h 37m
1 stop
$728United Airlines
Mon, Jul 27 - Thu, Jul 30
United Airlines Logo
11:20 am - 5:19 pm
RAP
-
IDA
5h 59m
1 stop
United Airlines Logo
4:14 pm - 10:24 am
IDA
-
RAP
18h 10m
2 stops
$1,088United Airlines
Tue, Jul 14 - Sat, Jul 18
Delta Logo
11:00 am - 6:18 pm
RAP
-
IDA
7h 18m
2 stops
Delta Logo
6:00 am - 3:29 pm
IDA
-
RAP
9h 29m
2 stops
$1,812Delta
Tue, Jul 14 - Sat, Jul 18
Delta Logo
11:00 am - 6:18 pm
RAP
-
IDA
7h 18m
2 stops
Delta Logo
6:00 am - 1:40 pm
IDA
-
RAP
7h 40m
2 stops
$1,813Delta
Mon, Jul 27 - Thu, Jul 30
Delta Logo
11:00 am - 6:18 pm
RAP
-
IDA
7h 18m
2 stops
Delta Logo
3:22 pm - 10:26 pm
IDA
-
RAP
7h 04m
2 stops
$2,963Delta
Mon, Jul 27 - Thu, Jul 30

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United Airlines flights from Rapid City to Idaho Falls

Our best United Airlines deals on Rapid City to Idaho Falls flight tickets
United Airlines
Oct 28
RAP5:00 amRapid City
4h 53m
1 stop
IDA9:53 amIdaho Falls Fanning Field
Oct 31
IDA2:32 pmIdaho Falls Fanning Field
6h 13m
1 stop
RAP8:45 pmRapid City
$359
United Airlines
Jul 14
RAP5:00 amRapid City
4h 50m
1 stop
IDA9:50 amIdaho Falls Fanning Field
Jul 18
IDA4:14 pmIdaho Falls Fanning Field
4h 10m
1 stop
RAP8:24 pmRapid City
$455
United Airlines
Jul 4
RAP11:20 amRapid City
4h 17m
1 stop
IDA3:37 pmIdaho Falls Fanning Field
Jul 7
IDA5:54 pmIdaho Falls Fanning Field
4h 39m
1 stop
RAP10:33 pmRapid City
$474

Delta flights from Rapid City to Idaho Falls

Our best Delta deals on Rapid City to Idaho Falls flight tickets
Delta
Jul 14
RAP11:00 amRapid City
7h 18m
2 stops
IDA6:18 pmIdaho Falls Fanning Field
Jul 18
IDA6:00 amIdaho Falls Fanning Field
9h 29m
2 stops
RAP3:29 pmRapid City
$1,812
Delta
Jul 27
RAP11:00 amRapid City
7h 18m
2 stops
IDA6:18 pmIdaho Falls Fanning Field
Jul 30
IDA6:00 amIdaho Falls Fanning Field
7h 40m
2 stops
RAP1:40 pmRapid City
$1,813
Delta
Jul 27
RAP11:00 amRapid City
7h 18m
2 stops
IDA6:18 pmIdaho Falls Fanning Field
Jul 30
IDA3:22 pmIdaho Falls Fanning Field
7h 04m
2 stops
RAP10:26 pmRapid City
$2,963

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 July 1, 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

Cheapest round-trip

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Wed 10/28

5:00 am-9:53 am

1 stop4h 53m

Idaho Falls Fanning Field

Sat 10/31

2:32 pm-8:45 pm

1 stop6h 13m

$359
Quickest round-trip

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 7/14

5:00 am-9:50 am

1 stop4h 50m

Idaho Falls Fanning Field

Sat 7/18

4:14 pm-8:24 pm

1 stop4h 10m

$455

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 7/13

7:00 am-1:25 pm

1 stop6h 25m

Idaho Falls Fanning Field

Fri 7/17

5:54 pm-7:24 pm

1 stop25h 30m

$538

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Wed 10/28

5:00 am-9:53 am

1 stop4h 53m

Idaho Falls Fanning Field

Sat 10/31

2:32 pm-11:53 am

2 stops21h 21m

$589

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 7/13

11:20 am-5:19 pm

1 stop5h 59m

Idaho Falls Fanning Field

Fri 7/17

4:14 pm-10:24 am

2 stops18h 10m

$598

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 7/27

7:00 am-1:25 pm

1 stop6h 25m

Idaho Falls Fanning Field

Thu 7/30

10:35 am-5:12 pm

1 stop6h 37m

$728

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 7/14

11:20 am-5:19 pm

1 stop5h 59m

Idaho Falls Fanning Field

Sat 7/18

4:14 pm-10:24 am

2 stops18h 10m

$1,088

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 7/14

11:00 am-6:18 pm

2 stops7h 18m

Idaho Falls Fanning Field

Sat 7/18

6:00 am-3:29 pm

2 stops9h 29m

$1,812

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 7/27

11:00 am-6:18 pm

2 stops7h 18m

Idaho Falls Fanning Field

Thu 7/30

6:00 am-1:40 pm

2 stops7h 40m

$1,813

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 7/27

11:00 am-6:18 pm

2 stops7h 18m

Idaho Falls Fanning Field

Thu 7/30

3:22 pm-10:26 pm

2 stops7h 04m

$2,963

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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 airline that flies from Rapid City to Idaho Falls Fanning Field?

Allegiant Air and United Airlines are the most popular carriers 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

4h 17m

Direct flights

None
The fastest flight from Rapid City to Idaho Falls takes 4h 17m
There are no direct flights from Rapid City to Idaho Falls. There are no popular flight routes from Rapid City to Idaho Falls.
Search flight deals

Frequently asked questions about flying from Rapid City to Idaho Falls

  • 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 17m.

  • 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 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.

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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