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 September 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.

$262 Cheap Flights from Rapid City to Idaho in 2026/27

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.

6:39 am - 12:35 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

5h 56m1 stop Minneapolis St Paul

5:30 am - 10:45 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

5h 15m1 stop Minneapolis St Paul

$339Delta

Sat, Oct 24 - Sun, Oct 25

4:36 pm - 11:59 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

7h 23m1 stop Minneapolis St Paul

3:00 pm - 10:41 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

7h 41m1 stop Minneapolis St Paul

$339Delta

Wed, Nov 11 - Sun, Nov 15

4:36 pm - 11:56 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

7h 20m1 stop Minneapolis St Paul

3:00 pm - 10:37 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

7h 37m1 stop Minneapolis St Paul

$339Delta

Tue, Nov 10 - Sun, Nov 15

7:05 am - 12:36 pmRAP Rapid City-GEG Spokane

6h 31m1 stop Denver Intl

5:00 am - 12:26 pmGEG Spokane-RAP Rapid City

6h 26m1 stop Denver Intl

$357United Airlines

Wed, Oct 14 - Sun, Oct 18

11:17 am - 3:24 pmRAP Rapid City-IDA Idaho Falls Fanning Field

4h 07m1 stop Denver Intl

4:05 pm - 10:30 pmIDA Idaho Falls Fanning Field-RAP Rapid City

6h 25m1 stop Denver Intl

$369United Airlines

Thu, Oct 15 - Sun, Oct 18

8:35 am - 1:35 pmRAP Rapid City-IDA Idaho Falls Fanning Field

5h 00m1 stop Denver Intl

2:35 pm - 7:08 pmIDA Idaho Falls Fanning Field-RAP Rapid City

4h 33m1 stop Denver Intl

$389United Airlines

Tue, Jan 12 - Sat, Jan 16

2:37 pm - 8:08 pmRAP Rapid City-GEG Spokane

6h 31m1 stop Minneapolis St Paul

7:00 am - 1:57 pmGEG Spokane-RAP Rapid City

5h 57m1 stop Minneapolis St Paul

$399Delta

Fri, Oct 23 - Sun, Oct 25

8:35 am - 1:35 pmRAP Rapid City-IDA Idaho Falls Fanning Field

5h 00m1 stop Denver Intl

2:35 pm - 7:08 pmIDA Idaho Falls Fanning Field-RAP Rapid City

4h 33m1 stop Denver Intl

$409United Airlines

Tue, Jan 12 - Sat, Jan 16

4:31 pm - 9:52 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

5h 21m1 stop Denver Intl

2:48 pm - 7:51 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

5h 03m1 stop Denver Intl

$419United Airlines

Sat, Dec 5 - Wed, Dec 9

7:05 am - 12:34 pmRAP Rapid City-GEG Spokane

6h 29m1 stop Denver Intl

1:49 pm - 8:43 pmGEG Spokane-RAP Rapid City

5h 54m1 stop Denver Intl

$419United Airlines

Sat, Oct 24 - Wed, Oct 28

Cheap last minute flights

Enter your travel dates to find the best prices.

5:00 am - 9:34 amRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 34m1 stop Denver Intl

6:25 am - 11:55 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

5h 30m1 stop Denver Intl

$456United Airlines

Thu, Sep 24 - Sat, Sep 26

5:53 pm - 10:33 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 40m1 stop Denver Intl

5:30 pm - 10:30 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

5h 00m1 stop Denver Intl

$619United Airlines

Fri, Sep 25 - Sun, Sep 27

7:00 am - 12:35 pmRAP Rapid City-GEG Spokane

6h 35m1 stop Denver Intl

5:00 am - 11:55 amGEG Spokane-RAP Rapid City

5h 55m1 stop Denver Intl

$773United Airlines

Tue, Sep 22 - Thu, Sep 24

1:37 pm - 9:34 amRAP Rapid City-BOI Boise Air Term. Gowen Fld

19h 57m2 stops Chicago O'Hare Intl Denver Intl

6:25 am - 12:26 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

6h 01m1 stop Denver Intl

$818United Airlines

Thu, Sep 24 - Sat, Sep 26

1:37 pm - 9:33 amRAP Rapid City-BOI Boise Air Term. Gowen Fld

19h 56m2 stops Chicago O'Hare Intl Denver Intl

5:30 pm - 10:30 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

5h 00m1 stop Denver Intl

$830United Airlines

Fri, Sep 25 - Sun, Sep 27

1:36 pm - 3:06 pmRAP Rapid City-GEG Spokane

26h 30m2 stops Chicago O'Hare Intl Denver Intl

1:38 pm - 8:52 pmGEG Spokane-RAP Rapid City

6h 14m1 stop Denver Intl

$1,040United Airlines

Tue, Sep 22 - Thu, Sep 24

2:30 pm - 11:58 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

9h 28m2 stops Minneapolis St Paul Salt Lake City

8:49 am - 10:18 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

13h 29m2 stops Salt Lake City Minneapolis St Paul

$1,105Delta

Fri, Sep 25 - Sun, Sep 27

6:30 am - 4:50 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

10h 20m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

6:30 am - 9:23 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

14h 53m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

$1,151American Airlines

Thu, Sep 24 - Sat, Sep 26

1:36 pm - 12:35 pmRAP Rapid City-GEG Spokane

23h 59m2 stops Chicago O'Hare Intl Denver Intl

11:10 am - 12:26 pmGEG Spokane-RAP Rapid City

24h 16m2 stops Chicago O'Hare Intl Denver Intl

$2,250United Airlines

Tue, Sep 22 - Thu, Sep 24

1:36 pm - 12:35 pmRAP Rapid City-GEG Spokane

23h 59m2 stops Chicago O'Hare Intl Denver Intl

6:00 am - 10:15 amGEG Spokane-RAP Rapid City

27h 15m2 stops San Francisco Chicago O'Hare Intl

$2,401United Airlines

Tue, Sep 22 - Thu, Sep 24

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United Airlines flights from Rapid City to Idaho

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

United Airlines

Oct 14

RAP7:05 amRapid City

6h 31m

1 stop

GEG12:36 pmSpokane

Oct 18

GEG5:00 amSpokane

6h 26m

1 stop

RAP12:26 pmRapid City

$357

United Airlines

Oct 15

RAP11:17 amRapid City

4h 07m

1 stop

IDA3:24 pmIdaho Falls Fanning Field

Oct 18

IDA4:05 pmIdaho Falls Fanning Field

6h 25m

1 stop

RAP10:30 pmRapid City

$369

United Airlines

Jan 12

RAP8:35 amRapid City

5h 00m

1 stop

IDA1:35 pmIdaho Falls Fanning Field

Jan 16

IDA2:35 pmIdaho Falls Fanning Field

4h 33m

1 stop

RAP7:08 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

Oct 26

RAP12:51 pmRapid City

8h 52m

1 stop

GEG8:43 pmSpokane

Oct 29

GEG6:00 amSpokane

9h 25m

1 stop

RAP4:25 pmRapid City

$567

American Airlines

Oct 2

RAP11:45 amRapid City

5h 18m

1 stop

BOI5:03 pmBoise Air Term. Gowen Fld

Oct 6

BOI8:00 amBoise Air Term. Gowen Fld

14h 02m

2 stops

RAP10:02 pmRapid City

$893

American Airlines

Nov 11

RAP1:09 pmRapid City

24h 14m

2 stops

BOI1:23 pmBoise Air Term. Gowen Fld

Nov 15

BOI6:06 amBoise Air Term. Gowen Fld

15h 21m

2 stops

RAP9:27 pmRapid City

$1,013

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 10/24

6:39 am-12:35 pm

1 stop5h 56m

Boise Air Term. Gowen Fld

Sun 10/25

5:30 am-10:45 am

1 stop5h 15m

$339

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Wed 11/11

4:36 pm-11:59 pm

1 stop7h 23m

Boise Air Term. Gowen Fld

Sun 11/15

3:00 pm-10:41 pm

1 stop7h 41m

$339

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Tue 11/10

4:36 pm-11:56 pm

1 stop7h 20m

Boise Air Term. Gowen Fld

Sun 11/15

3:00 pm-10:37 pm

1 stop7h 37m

$339

Rapid CitySpokane

RAP Rapid City - GEG Spokane

RAPGEG

Rapid City

Wed 10/14

7:05 am-12:36 pm

1 stop6h 31m

Spokane

Sun 10/18

5:00 am-12:26 pm

1 stop6h 26m

$357

Rapid CityIdaho Falls

RAP Rapid City - IDA Idaho Falls Fanning Field

RAPIDA

Rapid City

Thu 10/15

11:17 am-3:24 pm

1 stop4h 07m

Idaho Falls Fanning Field

Sun 10/18

4:05 pm-10:30 pm

1 stop6h 25m

$369

Quickest round-trip

Rapid CityIdaho Falls

RAP Rapid City - IDA Idaho Falls Fanning Field

RAPIDA

Rapid City

Tue 1/12

8:35 am-1:35 pm

1 stop5h 00m

Idaho Falls Fanning Field

Sat 1/16

2:35 pm-7:08 pm

1 stop4h 33m

$389

Rapid CitySpokane

RAP Rapid City - GEG Spokane

RAPGEG

Rapid City

Fri 10/23

2:37 pm-8:08 pm

1 stop6h 31m

Spokane

Sun 10/25

7:00 am-1:57 pm

1 stop5h 57m

$399

Rapid CityIdaho Falls

RAP Rapid City - IDA Idaho Falls Fanning Field

RAPIDA

Rapid City

Tue 1/12

8:35 am-1:35 pm

1 stop5h 00m

Idaho Falls Fanning Field

Sat 1/16

2:35 pm-7:08 pm

1 stop4h 33m

$409

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Sat 12/5

4:31 pm-9:52 pm

1 stop5h 21m

Boise Air Term. Gowen Fld

Wed 12/9

2:48 pm-7:51 pm

1 stop5h 03m

$419

Rapid CitySpokane

RAP Rapid City - GEG Spokane

RAPGEG

Rapid City

Sat 10/24

7:05 am-12:34 pm

1 stop6h 29m

Spokane

Wed 10/28

1:49 pm-8:43 pm

1 stop5h 54m

$419

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 21% 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

Best Price Found	$262
Fastest flight time	4h 12m
Direct flights	None

The best one-way flight to Idaho from Rapid City in the past 72 hours is $262. The best round-trip flight deal from Rapid City to Idaho found on momondo in the last 72 hours is $339.

The fastest flight from Rapid City to Idaho takes 4h 12m

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 September 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 10,227 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.