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

United Airlines is the most popular carrier 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 2025, 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.

$187 Cheap Flights from Rapid City to Idaho in 2025

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0 bags

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Find the cheapest flights from Rapid City to Idaho

Round-trip

One-way

Cheap round-trip flights

5:30 am - 9:42 amRAP-BOI

4h 12m1 stop

2:42 pm - 8:39 pmBOI-RAP

5h 57m1 stop

$249United Airlines

Find Deal

Tue, Sep 2 - Tue, Sep 9

5:30 am - 9:42 amRAP-BOI

4h 12m1 stop

2:42 pm - 8:39 pmBOI-RAP

5h 57m1 stop

$254United Airlines

Find Deal

Thu, Aug 21 - Tue, Sep 9

5:30 am - 9:42 amRAP-BOI

4h 12m1 stop

5:39 pm - 9:59 pmBOI-RAP

4h 20m1 stop

$259United Airlines

Find Deal

Thu, Aug 21 - Sun, Aug 24

4:25 pm - 11:48 pmRAP-GEG

8h 23m1 stop

2:21 pm - 10:32 pmGEG-RAP

7h 11m1 stop

$274Delta

Find Deal

Wed, Aug 27 - Sat, Aug 30

8:45 am - 12:45 pmRAP-GEG

5h 00m1 stop

5:10 am - 11:05 amGEG-RAP

4h 55m1 stop

$275United Airlines

Find Deal

Fri, Nov 14 - Sun, Nov 16

2:20 pm - 10:47 pmRAP-GEG

9h 27m2 stops

6:30 am - 1:40 pmGEG-RAP

6h 10m1 stop

$304Delta

Find Deal

Fri, Nov 14 - Sun, Nov 16

4:25 pm - 11:48 pmRAP-GEG

8h 23m1 stop

7:10 am - 10:32 pmGEG-RAP

14h 22m2 stops

$322Delta

Find Deal

Wed, Aug 27 - Sat, Aug 30

5:02 pm - 10:55 pmRAP-GEG

6h 53m1 stop

12:14 pm - 12:20 pmGEG-RAP

23h 06m1 stop

$433American Airlines

Find Deal

Tue, Aug 26 - Sat, Aug 30

5:00 pm - 4:52 pmRAP-BOI

23h 52m2 stops

7:00 am - 4:04 pmBOI-RAP

9h 04m1 stop

$462American Airlines

Find Deal

Sat, Sep 27 - Wed, Oct 1

5:00 pm - 4:52 pmRAP-BOI

23h 52m2 stops

6:35 am - 8:53 pmBOI-RAP

14h 18m2 stops

$501American Airlines

Find Deal

Sat, Sep 27 - Wed, Oct 1

American Airlines flights from Rapid City to Idaho

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

American Airlines

Aug 26

RAP5:02 pmRapid City

6h 53m

1 stop

GEG10:55 pmSpokane

Aug 30

GEG12:14 pmSpokane

23h 06m

1 stop

RAP12:20 pmRapid City

$433

Find similar

American Airlines

Sep 27

RAP5:00 pmRapid City

23h 52m

2 stops

BOI4:52 pmBoise Air Term. Gowen Fld

Oct 1

BOI7:00 amBoise Air Term. Gowen Fld

9h 04m

1 stop

RAP4:04 pmRapid City

$462

Find similar

American Airlines

Sep 27

RAP5:00 pmRapid City

23h 52m

2 stops

BOI4:52 pmBoise Air Term. Gowen Fld

Oct 1

BOI6:35 amBoise Air Term. Gowen Fld

14h 18m

2 stops

RAP8:53 pmRapid City

$501

Find similar

United Airlines flights from Rapid City to Idaho

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

United Airlines

Sep 2

RAP5:30 amRapid City

4h 12m

1 stop

BOI9:42 amBoise Air Term. Gowen Fld

Sep 9

BOI2:42 pmBoise Air Term. Gowen Fld

5h 57m

1 stop

RAP8:39 pmRapid City

$249

Find similar

United Airlines

Aug 21

RAP5:30 amRapid City

4h 12m

1 stop

BOI9:42 amBoise Air Term. Gowen Fld

Sep 9

BOI2:42 pmBoise Air Term. Gowen Fld

5h 57m

1 stop

RAP8:39 pmRapid City

$254

Find similar

United Airlines

Aug 21

RAP5:30 amRapid City

4h 12m

1 stop

BOI9:42 amBoise Air Term. Gowen Fld

Aug 24

BOI5:39 pmBoise Air Term. Gowen Fld

4h 20m

1 stop

RAP9:59 pmRapid City

$259

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Tue 9/2

5:30 am-9:42 am

1 stop4h 12m

Boise Air Term. Gowen Fld

Tue 9/9

2:42 pm-8:39 pm

1 stop5h 57m

$249

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Thu 8/21

5:30 am-9:42 am

1 stop4h 12m

Boise Air Term. Gowen Fld

Tue 9/9

2:42 pm-8:39 pm

1 stop5h 57m

$254

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Thu 8/21

5:30 am-9:42 am

1 stop4h 12m

Boise Air Term. Gowen Fld

Sun 8/24

5:39 pm-9:59 pm

1 stop4h 20m

$259

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 8/27

4:25 pm-11:48 pm

1 stop8h 23m

Spokane

Sat 8/30

2:21 pm-10:32 pm

1 stop7h 11m

$274

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 11/14

8:45 am-12:45 pm

1 stop5h 00m

Spokane

Sun 11/16

5:10 am-11:05 am

1 stop4h 55m

$275

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 11/14

2:20 pm-10:47 pm

2 stops9h 27m

Spokane

Sun 11/16

6:30 am-1:40 pm

1 stop6h 10m

$304

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 8/27

4:25 pm-11:48 pm

1 stop8h 23m

Spokane

Sat 8/30

7:10 am-10:32 pm

2 stops14h 22m

$322

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Tue 8/26

5:02 pm-10:55 pm

1 stop6h 53m

Spokane

Sat 8/30

12:14 pm-12:20 pm

1 stop23h 06m

$433

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Sat 9/27

5:00 pm-4:52 pm

2 stops23h 52m

Boise Air Term. Gowen Fld

Wed 10/1

7:00 am-4:04 pm

1 stop9h 04m

$462

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Sat 9/27

5:00 pm-4:52 pm

2 stops23h 52m

Boise Air Term. Gowen Fld

Wed 10/1

6:35 am-8:53 pm

2 stops14h 18m

$501

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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, January 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 $248. If you don’t want to visit Idaho in January, then you should wait until April to fly from Rapid City, when ticket prices are also cheap, with an average price of $248.

What is the cheapest day to depart on your flight to Idaho?

Our data shows that Thursday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $326. On the other hand, Tuesday is the most expensive day to depart from Rapid City because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $522.

What is the cheapest time of day to depart on your flight to Idaho?

According to our data, the cheapest time of day to fly to Idaho is in the afternoon. momondo users have found flights departing from Rapid City to Idaho in the afternoon for as low as $309. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Idaho, so prices are often more expensive at around $443 per ticket.

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	$187
Fastest flight time	4h 12m
Direct flights	None
Airports in Idaho	3 airports

The best one-way flight to Idaho from Rapid City in the past 72 hours is $187. The best round-trip flight deal from Rapid City to Idaho found on momondo in the last 72 hours is $249.

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

There are no direct flights from Rapid City to Idaho. Popular non-direct routes for this connection are Rapid City Airport - Boise Air Term. Gowen Fld Airport, Rapid City Airport - Spokane Airport and Rapid City Airport - Idaho Falls Fanning Field Airport.

There are 3 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI)

Search flight deals

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 2025, 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 $182	Free Cancellation	Rating 7.4 8,916 reviews		Search United Airlines flights
Delta	PriceFrom $248	Free Cancellation	Rating 8.0 7,985 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.