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

United Airlines and Delta are the most popular carriers operating from Rapid City to Idaho

When did momondo last update prices for flights from Rapid City Airport to Idaho?

Prices for flights from Rapid City Airport to Idaho are refreshed on a daily basis.

How many operators does momondo search for flights from Rapid City Airport to Idaho?

As of June 2026, there are 2 operators available to choose from for flights from Rapid City Airport to Idaho.

How old do you have to be to fly from Rapid City Airport to Idaho?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rapid City Airport to Idaho.

What documentation or ID do you need to fly to Idaho?

The travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$241 Cheap Flights from Rapid City to Idaho in 2026

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Find the cheapest flights from Rapid City to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:00 am - 9:35 am

RAP

BOI

4h 35m

1 stop

2:31 pm - 8:44 pm

BOI

RAP

6h 13m

1 stop

$309United Airlines

Wed, Sep 23 - Tue, Sep 29

5:00 am - 9:53 am

RAP

IDA

4h 53m

1 stop

4:04 pm - 8:44 pm

IDA

RAP

4h 40m

1 stop

$359United Airlines

Tue, Oct 20 - Sat, Oct 24

5:00 am - 9:34 am

RAP

BOI

4h 34m

1 stop

2:44 pm - 8:37 pm

BOI

RAP

5h 53m

1 stop

$389United Airlines

Sat, Aug 22 - Tue, Aug 25

6:48 am - 1:18 pm

RAP

GEG

7h 30m

1 stop

2:26 pm - 10:26 pm

GEG

RAP

7h 00m

1 stop

$414Delta

Wed, Jul 1 - Tue, Jul 7

4:31 pm - 11:04 pm

RAP

GEG

7h 33m

1 stop

7:00 am - 3:46 pm

GEG

RAP

7h 46m

1 stop

$428Delta

Thu, Oct 1 - Tue, Oct 6

11:20 am - 5:56 pm

RAP

BOI

6h 36m

1 stop

5:46 pm - 10:25 pm

BOI

RAP

4h 39m

1 stop

$434United Airlines

Wed, Jul 22 - Mon, Jul 27

4:31 pm - 11:04 pm

RAP

GEG

7h 33m

1 stop

5:20 am - 3:46 pm

GEG

RAP

9h 26m

2 stops

$479Delta

Thu, Oct 1 - Tue, Oct 6

11:45 am - 7:39 pm

RAP

GEG

8h 54m

1 stop

12:45 pm - 9:23 pm

GEG

RAP

7h 38m

1 stop

$537American Airlines

Mon, Sep 14 - Fri, Sep 18

11:45 am - 10:03 pm

RAP

BOI

10h 18m

1 stop

8:05 am - 9:23 pm

BOI

RAP

13h 18m

2 stops

$560American Airlines

Wed, Sep 23 - Tue, Sep 29

11:44 am - 10:46 pm

RAP

BOI

11h 02m

1 stop

5:20 pm - 9:47 am

BOI

RAP

16h 27m

2 stops

$655American Airlines

Wed, Jul 22 - Mon, Jul 27

United Airlines flights from Rapid City to Idaho

Our best United Airlines deals on Rapid City to Idaho flight tickets

United Airlines

Sep 23

RAP5:00 amRapid City

4h 35m

1 stop

BOI9:35 amBoise Air Term. Gowen Fld

Sep 29

BOI2:31 pmBoise Air Term. Gowen Fld

6h 13m

1 stop

RAP8:44 pmRapid City

$309

United Airlines

Oct 20

RAP5:00 amRapid City

4h 53m

1 stop

IDA9:53 amIdaho Falls Fanning Field

Oct 24

IDA4:04 pmIdaho Falls Fanning Field

4h 40m

1 stop

RAP8:44 pmRapid City

$359

United Airlines

Aug 22

RAP5:00 amRapid City

4h 34m

1 stop

BOI9:34 amBoise Air Term. Gowen Fld

Aug 25

BOI2:44 pmBoise Air Term. Gowen Fld

5h 53m

1 stop

RAP8:37 pmRapid City

$389

American Airlines flights from Rapid City to Idaho

Our best American Airlines deals on Rapid City to Idaho flight tickets

American Airlines

Sep 14

RAP11:45 amRapid City

8h 54m

1 stop

GEG7:39 pmSpokane

Sep 18

GEG12:45 pmSpokane

7h 38m

1 stop

RAP9:23 pmRapid City

$537

American Airlines

Sep 23

RAP11:45 amRapid City

10h 18m

1 stop

BOI10:03 pmBoise Air Term. Gowen Fld

Sep 29

BOI8:05 amBoise Air Term. Gowen Fld

13h 18m

2 stops

RAP9:23 pmRapid City

$560

American Airlines

Jul 22

RAP11:44 amRapid City

11h 02m

1 stop

BOI10:46 pmBoise Air Term. Gowen Fld

Jul 27

BOI5:20 pmBoise Air Term. Gowen Fld

16h 27m

2 stops

RAP9:47 amRapid City

$655

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Wed 9/23

5:00 am-9:35 am

1 stop4h 35m

Boise Air Term. Gowen Fld

Tue 9/29

2:31 pm-8:44 pm

1 stop6h 13m

$309

Quickest round-trip

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Tue 10/20

5:00 am-9:53 am

1 stop4h 53m

Idaho Falls Fanning Field

Sat 10/24

4:04 pm-8:44 pm

1 stop4h 40m

$359

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Sat 8/22

5:00 am-9:34 am

1 stop4h 34m

Boise Air Term. Gowen Fld

Tue 8/25

2:44 pm-8:37 pm

1 stop5h 53m

$389

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 7/1

6:48 am-1:18 pm

1 stop7h 30m

Spokane

Tue 7/7

2:26 pm-10:26 pm

1 stop7h 00m

$414

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 10/1

4:31 pm-11:04 pm

1 stop7h 33m

Spokane

Tue 10/6

7:00 am-3:46 pm

1 stop7h 46m

$428

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Wed 7/22

11:20 am-5:56 pm

1 stop6h 36m

Boise Air Term. Gowen Fld

Mon 7/27

5:46 pm-10:25 pm

1 stop4h 39m

$434

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 10/1

4:31 pm-11:04 pm

1 stop7h 33m

Spokane

Tue 10/6

5:20 am-3:46 pm

2 stops9h 26m

$479

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Mon 9/14

11:45 am-7:39 pm

1 stop8h 54m

Spokane

Fri 9/18

12:45 pm-9:23 pm

1 stop7h 38m

$537

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Wed 9/23

11:45 am-10:03 pm

1 stop10h 18m

Boise Air Term. Gowen Fld

Tue 9/29

8:05 am-9:23 pm

2 stops13h 18m

$560

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Wed 7/22

11:44 am-10:46 pm

1 stop11h 02m

Boise Air Term. Gowen Fld

Mon 7/27

5:20 pm-9:47 am

2 stops16h 27m

$655

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to Idaho?

In general, December is the cheapest month to fly from Rapid City to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Idaho in December, then you should wait until October to fly from Rapid City, when ticket prices are also cheap, with an average price of $248.

Can stopping save me money on Rapid City to Idaho flights?

You could potentially save up to 9% on your flight if you consider stops on a Rapid City to Idaho flight.

Cheap Rapid City to Idaho flight deals and tips

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

Fastest flight time	4h 34m
Direct flights	None

The fastest flight from Rapid City to Idaho takes 4h 34m

There are no direct flights from Rapid City to Idaho. There are no popular flight routes from Rapid City to Idaho.

Search flight deals

Frequently asked questions about flying from Rapid City to Idaho

When did momondo last update prices for flights from Rapid City Airport to Idaho?
Prices for flights from Rapid City Airport to Idaho are refreshed on a daily basis.
How many operators does momondo search for flights from Rapid City Airport to Idaho?
As of June 2026, there are 2 operators available to choose from for flights from Rapid City Airport to Idaho.
How old do you have to be to fly from Rapid City Airport to Idaho?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rapid City Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Rapid City to Idaho

Compare and see reviews for airlines that fly from Rapid City to Idaho with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $152	Free Cancellation	Rating 7.4 9,774 reviews		Search United Airlines flights
Delta	PriceFrom $248	Free Cancellation	Rating 7.8 8,395 reviews		Search Delta flights

Why use momondo?

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

Finding the right flight to Idaho 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 quick and easy, saving you time and money.

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

All flight searches from Rapid City to Idaho on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Rapid City to Idaho flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Idaho from Rapid City are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.