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

Delta and United Airlines 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 August 2026, there is 1 operator 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.

$216 Cheap Flights from Rapid City to Idaho in 2026

Discover deals from 900+ travel sites with momondo.

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.

5:58 pm - 10:40 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 42m1 stop Denver Intl

6:30 am - 12:24 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

5h 54m1 stop Denver Intl

$319United Airlines

Sat, Aug 29 - Sun, Aug 30

7:00 am - 1:38 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

6h 38m1 stop Denver Intl

5:00 am - 9:28 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

4h 28m1 stop Denver Intl

$319United Airlines

Thu, Aug 27 - Mon, Aug 31

5:58 pm - 10:40 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 42m1 stop Denver Intl

5:00 am - 9:28 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

4h 28m1 stop Denver Intl

$319United Airlines

Tue, Sep 1 - Mon, Sep 7

11:22 am - 5:58 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

6h 36m1 stop Denver Intl

5:00 am - 11:55 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

6h 55m1 stop Denver Intl

$319United Airlines

Fri, Aug 28 - Sun, Aug 30

7:00 am - 1:38 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

6h 38m1 stop Denver Intl

5:00 am - 9:28 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

4h 28m1 stop Denver Intl

$319United Airlines

Sat, Aug 29 - Mon, Aug 31

7:00 am - 1:29 pmRAP Rapid City-IDA Idaho Falls Fanning Field

6h 29m1 stop Denver Intl

5:53 pm - 10:33 pmIDA Idaho Falls Fanning Field-RAP Rapid City

4h 40m1 stop Denver Intl

$340United Airlines

Tue, Sep 1 - Mon, Sep 7

5:00 am - 9:35 amRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 35m1 stop Denver Intl

5:00 am - 9:28 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

4h 28m1 stop Denver Intl

$340United Airlines

Mon, Aug 31 - Mon, Sep 7

5:58 pm - 10:40 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 42m1 stop Denver Intl

5:00 am - 9:28 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

4h 28m1 stop Denver Intl

$341United Airlines

Tue, Sep 1 - Mon, Sep 7

3:33 pm - 2:57 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

23h 24m1 stop Las Vegas Harry Reid Intl

3:52 pm - 7:55 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

28h 03m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

$374Multiple Airlines

Thu, Oct 29 - Thu, Nov 5

12:51 pm - 10:29 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

9h 38m1 stop Dallas/Fort Worth

12:19 pm - 9:27 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

9h 08m1 stop Dallas/Fort Worth

$379American Airlines

Thu, Oct 29 - Thu, Nov 5

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Delta flights from Rapid City to Idaho

Our best Delta deals on Rapid City to Idaho flight tickets

Delta

Aug 19

RAP4:30 pmRapid City

7h 29m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Aug 22

BOI7:00 amBoise Air Term. Gowen Fld

15h 37m

2 stops

RAP10:37 pmRapid City

$497

Delta

Aug 19

RAP4:30 pmRapid City

7h 29m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Aug 23

BOI7:00 amBoise Air Term. Gowen Fld

15h 37m

2 stops

RAP10:37 pmRapid City

$522

Delta

Sep 1

RAP6:48 amRapid City

7h 09m

1 stop

GEG12:57 pmSpokane

Sep 7

GEG6:45 amSpokane

8h 04m

1 stop

RAP3:49 pmRapid City

$528

United Airlines flights from Rapid City to Idaho

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

United Airlines

Aug 29

RAP7:00 amRapid City

6h 38m

1 stop

BOI1:38 pmBoise Air Term. Gowen Fld

Aug 31

BOI5:00 amBoise Air Term. Gowen Fld

4h 28m

1 stop

RAP9:28 amRapid City

$319

United Airlines

Sep 1

RAP7:00 amRapid City

6h 29m

1 stop

IDA1:29 pmIdaho Falls Fanning Field

Sep 7

IDA5:53 pmIdaho Falls Fanning Field

4h 40m

1 stop

RAP10:33 pmRapid City

$340

United Airlines

Sep 1

RAP5:58 pmRapid City

4h 42m

1 stop

BOI10:40 pmBoise Air Term. Gowen Fld

Sep 7

BOI5:00 amBoise Air Term. Gowen Fld

4h 28m

1 stop

RAP9:28 amRapid City

$341

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Sat 8/29

5:58 pm-10:40 pm

1 stop4h 42m

Boise Air Term. Gowen Fld

Sun 8/30

6:30 am-12:24 pm

1 stop5h 54m

$319

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Thu 8/27

7:00 am-1:38 pm

1 stop6h 38m

Boise Air Term. Gowen Fld

Mon 8/31

5:00 am-9:28 am

1 stop4h 28m

$319

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Tue 9/1

5:58 pm-10:40 pm

1 stop4h 42m

Boise Air Term. Gowen Fld

Mon 9/7

5:00 am-9:28 am

1 stop4h 28m

$319

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Fri 8/28

11:22 am-5:58 pm

1 stop6h 36m

Boise Air Term. Gowen Fld

Sun 8/30

5:00 am-11:55 am

1 stop6h 55m

$319

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Sat 8/29

7:00 am-1:38 pm

1 stop6h 38m

Boise Air Term. Gowen Fld

Mon 8/31

5:00 am-9:28 am

1 stop4h 28m

$319

Rapid CityIdaho Falls

RAP Rapid City - IDA Idaho Falls Fanning Field

RAPIDA

Rapid City

Tue 9/1

7:00 am-1:29 pm

1 stop6h 29m

Idaho Falls Fanning Field

Mon 9/7

5:53 pm-10:33 pm

1 stop4h 40m

$340

Quickest round-trip

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Mon 8/31

5:00 am-9:35 am

1 stop4h 35m

Boise Air Term. Gowen Fld

Mon 9/7

5:00 am-9:28 am

1 stop4h 28m

$340

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Tue 9/1

5:58 pm-10:40 pm

1 stop4h 42m

Boise Air Term. Gowen Fld

Mon 9/7

5:00 am-9:28 am

1 stop4h 28m

$341

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Thu 10/29

3:33 pm-2:57 pm

1 stop23h 24m

Boise Air Term. Gowen Fld

Thu 11/5

3:52 pm-7:55 pm

2 stops28h 03m

$374

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Thu 10/29

12:51 pm-10:29 pm

1 stop9h 38m

Boise Air Term. Gowen Fld

Thu 11/5

12:19 pm-9:27 pm

1 stop9h 08m

$379

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 June to fly from Rapid City, when ticket prices are also cheap, with an average price of $0.

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	3h 58m
Direct flights	None

The fastest flight from Rapid City to Idaho takes 3h 58m

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 August 2026, there is 1 operator 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 $248	Free Cancellation	Rating 7.4 10,058 reviews		Search United Airlines 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.