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 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.

$249 Cheap Flights from Rapid City to Idaho in 2025/26

1 adult

0 bags

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Find the cheapest flights from Rapid City to Idaho

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 2:01 pmRAP-BOI

8h 01m1 stop

3:03 pm - 10:28 pmBOI-RAP

7h 25m1 stop

$249Delta

Find Deal

Tue, Mar 3 - Sat, Mar 7

8:35 am - 1:34 pmRAP-IDA

4h 59m1 stop

2:35 pm - 6:50 pmIDA-RAP

4h 15m1 stop

$289United Airlines

Find Deal

Wed, Mar 25 - Sat, Mar 28

6:00 am - 8:12 pmRAP-BOI

14h 12m2 stops

3:03 pm - 10:28 pmBOI-RAP

7h 25m1 stop

$293Delta

Find Deal

Tue, Mar 3 - Sat, Mar 7

6:00 am - 2:01 pmRAP-BOI

8h 01m1 stop

3:03 pm - 10:28 pmBOI-RAP

7h 25m1 stop

$294Delta

Find Deal

Tue, Mar 3 - Sat, Mar 7

2:52 pm - 9:32 pmRAP-BOI

6h 40m1 stop

6:15 am - 12:37 pmBOI-RAP

6h 22m1 stop

$319United Airlines

Find Deal

Tue, Mar 3 - Sat, Mar 7

6:00 am - 9:58 pmRAP-BOI

15h 58m2 stops

3:03 pm - 10:28 pmBOI-RAP

7h 25m1 stop

$347Delta

Find Deal

Tue, Mar 3 - Sat, Mar 7

7:10 am - 12:45 pmRAP-GEG

6h 35m1 stop

1:47 pm - 8:26 pmGEG-RAP

5h 39m1 stop

$349United Airlines

Find Deal

Sat, Nov 15 - Mon, Nov 17

11:14 am - 6:06 pmRAP-IDA

6h 52m1 stop

2:45 pm - 10:14 amIDA-RAP

19h 29m1 stop

$416Allegiant Air

Find Deal

Mon, Nov 17 - Fri, Nov 21

9:16 pm - 6:21 pmRAP-IDA

21h 05m1 stop

9:30 pm - 8:14 amIDA-RAP

10h 44m1 stop

$509Allegiant Air

Find Deal

Mon, Dec 22 - Sat, Dec 27

5:51 am - 9:57 pmRAP-IDA

16h 06m2 stops

8:23 am - 8:15 pmIDA-RAP

11h 52m2 stops

$931American Airlines

Find Deal

Wed, Mar 25 - Sat, Mar 28

Delta flights from Rapid City to Idaho

Our best Delta deals on Rapid City to Idaho flight tickets

Delta

Mar 3

RAP6:00 amRapid City

8h 01m

1 stop

BOI2:01 pmBoise Air Term. Gowen Fld

Mar 7

BOI3:03 pmBoise Air Term. Gowen Fld

7h 25m

1 stop

RAP10:28 pmRapid City

$249

Find similar

Delta

Mar 3

RAP6:00 amRapid City

14h 12m

2 stops

BOI8:12 pmBoise Air Term. Gowen Fld

Mar 7

BOI3:03 pmBoise Air Term. Gowen Fld

7h 25m

1 stop

RAP10:28 pmRapid City

$293

Find similar

Delta

Mar 3

RAP6:00 amRapid City

8h 01m

1 stop

BOI2:01 pmBoise Air Term. Gowen Fld

Mar 7

BOI3:03 pmBoise Air Term. Gowen Fld

7h 25m

1 stop

RAP10:28 pmRapid City

$294

Find similar

United Airlines flights from Rapid City to Idaho

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

United Airlines

Mar 25

RAP8:35 amRapid City

4h 59m

1 stop

IDA1:34 pmIdaho Falls Fanning Field

Mar 28

IDA2:35 pmIdaho Falls Fanning Field

4h 15m

1 stop

RAP6:50 pmRapid City

$289

Find similar

United Airlines

Mar 3

RAP2:52 pmRapid City

6h 40m

1 stop

BOI9:32 pmBoise Air Term. Gowen Fld

Mar 7

BOI6:15 amBoise Air Term. Gowen Fld

6h 22m

1 stop

RAP12:37 pmRapid City

$319

Find similar

United Airlines

Nov 15

RAP7:10 amRapid City

6h 35m

1 stop

GEG12:45 pmSpokane

Nov 17

GEG1:47 pmSpokane

5h 39m

1 stop

RAP8:26 pmRapid City

$349

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Tue 3/3

6:00 am-2:01 pm

1 stop8h 01m

Boise Air Term. Gowen Fld

Sat 3/7

3:03 pm-10:28 pm

1 stop7h 25m

$249

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Wed 3/25

8:35 am-1:34 pm

1 stop4h 59m

Idaho Falls Fanning Field

Sat 3/28

2:35 pm-6:50 pm

1 stop4h 15m

$289

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Tue 3/3

6:00 am-8:12 pm

2 stops14h 12m

Boise Air Term. Gowen Fld

Sat 3/7

3:03 pm-10:28 pm

1 stop7h 25m

$293

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Tue 3/3

6:00 am-2:01 pm

1 stop8h 01m

Boise Air Term. Gowen Fld

Sat 3/7

3:03 pm-10:28 pm

1 stop7h 25m

$294

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Tue 3/3

2:52 pm-9:32 pm

1 stop6h 40m

Boise Air Term. Gowen Fld

Sat 3/7

6:15 am-12:37 pm

1 stop6h 22m

$319

Rapid CityBoise

RAP - BOI

RAPBOI

Rapid City

Tue 3/3

6:00 am-9:58 pm

2 stops15h 58m

Boise Air Term. Gowen Fld

Sat 3/7

3:03 pm-10:28 pm

1 stop7h 25m

$347

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Sat 11/15

7:10 am-12:45 pm

1 stop6h 35m

Spokane

Mon 11/17

1:47 pm-8:26 pm

1 stop5h 39m

$349

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 11/17

11:14 am-6:06 pm

1 stop6h 52m

Idaho Falls Fanning Field

Fri 11/21

2:45 pm-10:14 am

1 stop19h 29m

$416

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Mon 12/22

9:16 pm-6:21 pm

1 stop21h 05m

Idaho Falls Fanning Field

Sat 12/27

9:30 pm-8:14 am

1 stop10h 44m

$509

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Wed 3/25

5:51 am-9:57 pm

2 stops16h 06m

Idaho Falls Fanning Field

Sat 3/28

8:23 am-8:15 pm

2 stops11h 52m

$931

Flights are sorted by cheapest round-trip flights first.

Sorted 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

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

Direct flights	None

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

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 November 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
Delta	PriceFrom $248	Free Cancellation	Rating 7.9 8,003 reviews		Search Delta flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 9,002 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.