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

Allegiant Air, 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 November 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.

$220 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.

9:48 pm - 5:20 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

19h 32m1 stop Las Vegas Harry Reid Intl

5:33 pm - 9:27 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

27h 54m1 stop Las Vegas Harry Reid Intl

$260Multiple Airlines

Thu, Dec 10 - Wed, Dec 23

10:17 pm - 4:48 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

18h 31m1 stop Las Vegas Harry Reid Intl

5:33 pm - 9:14 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

15h 41m1 stop Las Vegas Harry Reid Intl

$277Multiple Airlines

Thu, Dec 24 - Mon, Dec 28

10:17 pm - 4:48 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

18h 31m1 stop Las Vegas Harry Reid Intl

5:33 pm - 9:14 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

15h 41m1 stop Las Vegas Harry Reid Intl

$286Multiple Airlines

Thu, Dec 24 - Mon, Dec 28

10:17 pm - 4:48 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

18h 31m1 stop Las Vegas Harry Reid Intl

5:33 pm - 9:27 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

27h 54m1 stop Las Vegas Harry Reid Intl

$307Multiple Airlines

Thu, Dec 24 - Wed, Dec 30

10:17 pm - 4:48 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

18h 31m1 stop Las Vegas Harry Reid Intl

9:19 pm - 8:38 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

11h 19m1 stop Phoenix-Mesa Gateway

$318Multiple Airlines

Thu, Dec 24 - Wed, Dec 30

4:47 pm - 9:56 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

5h 09m1 stop Denver Intl

6:25 am - 11:32 amBOI Boise Air Term. Gowen Fld-RAP Rapid City

5h 07m1 stop Denver Intl

$339United Airlines

Sat, Feb 13 - Fri, Feb 19

4:31 pm - 9:27 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

4h 56m1 stop Denver Intl

6:15 am - 1:03 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

6h 48m1 stop Denver Intl

$339United Airlines

Fri, Dec 4 - Tue, Dec 8

6:42 am - 12:42 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

6h 00m1 stop Minneapolis St Paul

5:15 am - 2:00 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

8h 45m1 stop Minneapolis St Paul

$339Delta

Fri, Dec 4 - Tue, Dec 8

4:36 pm - 12:10 amRAP Rapid City-BOI Boise Air Term. Gowen Fld

7h 34m1 stop Minneapolis St Paul

1:07 pm - 10:46 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

9h 39m2 stops Salt Lake City Minneapolis St Paul

$344Delta

Fri, Dec 4 - Tue, Dec 8

6:42 am - 5:53 pmRAP Rapid City-BOI Boise Air Term. Gowen Fld

11h 11m2 stops Minneapolis St Paul Salt Lake City

10:25 am - 10:46 pmBOI Boise Air Term. Gowen Fld-RAP Rapid City

12h 21m2 stops Salt Lake City Minneapolis St Paul

$349Delta

Fri, Dec 4 - Tue, Dec 8

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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

Dec 4

RAP4:31 pmRapid City

4h 56m

1 stop

BOI9:27 pmBoise Air Term. Gowen Fld

Dec 8

BOI6:15 amBoise Air Term. Gowen Fld

6h 48m

1 stop

RAP1:03 pmRapid City

$339

United Airlines

Nov 17

RAP12:39 pmRapid City

5h 24m

1 stop

BOI6:03 pmBoise Air Term. Gowen Fld

Nov 21

BOI5:44 pmBoise Air Term. Gowen Fld

4h 46m

1 stop

RAP10:30 pmRapid City

$369

United Airlines

Jan 8

RAP8:00 amRapid City

5h 28m

1 stop

IDA1:28 pmIdaho Falls Fanning Field

Jan 12

IDA2:30 pmIdaho Falls Fanning Field

6h 00m

1 stop

RAP8:30 pmRapid City

$429

Delta flights from Rapid City to Idaho

Our best Delta deals on Rapid City to Idaho flight tickets

Delta

Dec 4

RAP4:36 pmRapid City

7h 34m

1 stop

BOI12:10 amBoise Air Term. Gowen Fld

Dec 8

BOI1:07 pmBoise Air Term. Gowen Fld

9h 39m

2 stops

RAP10:46 pmRapid City

$344

Delta

Dec 4

RAP6:42 amRapid City

11h 11m

2 stops

BOI5:53 pmBoise Air Term. Gowen Fld

Dec 8

BOI10:25 amBoise Air Term. Gowen Fld

12h 21m

2 stops

RAP10:46 pmRapid City

$349

Delta

Nov 11

RAP6:45 amRapid City

5h 48m

1 stop

BOI12:33 pmBoise Air Term. Gowen Fld

Nov 15

BOI5:30 amBoise Air Term. Gowen Fld

8h 13m

1 stop

RAP1:43 pmRapid City

$429

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

Thu 12/10

9:48 pm-5:20 pm

1 stop19h 32m

Boise Air Term. Gowen Fld

Wed 12/23

5:33 pm-9:27 pm

1 stop27h 54m

$260

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Thu 12/24

10:17 pm-4:48 pm

1 stop18h 31m

Boise Air Term. Gowen Fld

Mon 12/28

5:33 pm-9:14 am

1 stop15h 41m

$277

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Thu 12/24

10:17 pm-4:48 pm

1 stop18h 31m

Boise Air Term. Gowen Fld

Mon 12/28

5:33 pm-9:14 am

1 stop15h 41m

$286

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Thu 12/24

10:17 pm-4:48 pm

1 stop18h 31m

Boise Air Term. Gowen Fld

Wed 12/30

5:33 pm-9:27 pm

1 stop27h 54m

$307

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Thu 12/24

10:17 pm-4:48 pm

1 stop18h 31m

Boise Air Term. Gowen Fld

Wed 12/30

9:19 pm-8:38 am

1 stop11h 19m

$318

Quickest round-trip

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Sat 2/13

4:47 pm-9:56 pm

1 stop5h 09m

Boise Air Term. Gowen Fld

Fri 2/19

6:25 am-11:32 am

1 stop5h 07m

$339

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Fri 12/4

4:31 pm-9:27 pm

1 stop4h 56m

Boise Air Term. Gowen Fld

Tue 12/8

6:15 am-1:03 pm

1 stop6h 48m

$339

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Fri 12/4

6:42 am-12:42 pm

1 stop6h 00m

Boise Air Term. Gowen Fld

Tue 12/8

5:15 am-2:00 pm

1 stop8h 45m

$339

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Fri 12/4

4:36 pm-12:10 am

1 stop7h 34m

Boise Air Term. Gowen Fld

Tue 12/8

1:07 pm-10:46 pm

2 stops9h 39m

$344

Rapid CityBoise

RAP Rapid City - BOI Boise Air Term. Gowen Fld

RAPBOI

Rapid City

Fri 12/4

6:42 am-5:53 pm

2 stops11h 11m

Boise Air Term. Gowen Fld

Tue 12/8

10:25 am-10:46 pm

2 stops12h 21m

$349

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, June 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 June, then you should wait until February 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 38% 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	$220
Fastest flight time	4h 53m
Direct flights	None

The best one-way flight to Idaho from Rapid City in the past 72 hours is $220. The best round-trip flight deal from Rapid City to Idaho found on momondo in the last 72 hours is $260.

The fastest flight from Rapid City to Idaho takes 4h 53m

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 November 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 7.3 10,461 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.