$216 Find Cheap Flights from Rapid City to Idaho - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Rapid City to Idaho departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Rapid City to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop$319
Idaho Falls
Idaho Falls1 stop$340
Spokane
Spokane1 stop$324
Boise
Boise1 stop$319
Idaho Falls
Idaho Falls1 stop$340
Spokane
Spokane1 stop$324

Book Cheap Rapid City to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Rapid City to Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Rapid City to Idaho

Fri, Aug 28 - Sun, Aug 30
United Airlines Logo
11:22 am - 5:58 pm-
6h 36m
United Airlines Logo
5:00 am - 11:55 am-
6h 55m
$319United Airlines
Sat, Aug 29 - Sun, Aug 30
United Airlines Logo
5:58 pm - 10:40 pm-
4h 42m
United Airlines Logo
6:30 am - 12:24 pm-
5h 54m
$319United Airlines
Tue, Sep 1 - Mon, Sep 7
United Airlines Logo
5:58 pm - 10:40 pm-
4h 42m
United Airlines Logo
5:00 am - 9:28 am-
4h 28m
$319United Airlines
Sat, Aug 29 - Mon, Aug 31
United Airlines Logo
7:00 am - 1:38 pm-
6h 38m
United Airlines Logo
5:00 am - 9:28 am-
4h 28m
$319United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
7:00 am - 1:38 pm-
6h 38m
United Airlines Logo
5:00 am - 9:28 am-
4h 28m
$319United Airlines
Wed, Sep 9 - Tue, Sep 22
Delta Logo
4:31 pm - 10:54 pm-
7h 23m
Delta Logo
7:30 pm - 10:01 am-
13h 31m
$324Delta
Wed, Sep 9 - Tue, Sep 22
Delta Logo
4:31 pm - 10:54 pm-
7h 23m
Delta Logo
6:45 am - 3:51 pm-
8h 06m
$329Delta
Mon, Aug 31 - Mon, Sep 7
United Airlines Logo
5:00 am - 9:35 am-
4h 35m
United Airlines Logo
5:00 am - 9:28 am-
4h 28m
$340United Airlines
Tue, Sep 1 - Mon, Sep 7
United Airlines Logo
7:00 am - 1:29 pm-
6h 29m
United Airlines Logo
5:53 pm - 10:33 pm-
4h 40m
$340United Airlines
Tue, Sep 1 - Mon, Sep 7
United Airlines Logo
5:58 pm - 10:40 pm-
4h 42m
United Airlines Logo
5:00 am - 9:28 am-
4h 28m
$341United Airlines
Booking Insights

KAYAK's insights & trends for Rapid City to Idaho flights

Get data-powered insights and trends into flights from Rapid City to Idaho to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Rapid City to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Rapid City to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Rapid City to Idaho is June, when tickets cost $0 (return) on average. On the other hand, the most expensive months are September and March, when the average cost of round-trip tickets is $706 and $579 respectively.

Find deals

Good to know

Low season

February

Cheapest flight

$216
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Rapid City to Boise

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Rapid City to Idaho?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Rapid City to Idaho.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Rapid City to Idaho?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Rapid City to Idaho is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Rapid City to Idaho?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Rapid City to Idaho with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Rapid City to Idaho?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Rapid City to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Rapid City to Idaho

 
See real verified KAYAK customer reviews for airlines flying from Rapid City to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Rapid City to Idaho? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10058 reviews
7.3Comfort
8.1Crew
6.7Food
7.7Boarding
7.1Entertainment
Airline reviews

Flight staff and all was fine. Food always sucks on planes so nothing new.

10.0 ExcellentJames, Aug 2026
Read more United Airlines reviews

Flight staff and all was fine. Food always sucks on planes so nothing new.

The flight crew were very helpful. The seats were very close together. There was barely room to sit without touching the person next to you.

I’m an EP on AA every year for more than a decade but this was a very pleasant and surprising experience. Clean and sizable plane for HOU to CHI. 5 row first class. And excellent food in first class the steak option was really good. Your flight attendants even better. Seat 5A

It was hot and not as comfortable as the flight to Chicago. Must have been a different plane that needs to be worked on or replaced.

My flight was delayed so bad i missed u it so i just said never mind

Wonderful flight! The crew was good, check-in was good and orderly and the flight was uneventful and good.

Gluten free snack options and meals that offer both gluten free and dairy free.

The SFO lounge closes at 12 midnight. My flight took off at 2AM

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

My flight was 3 hours late, which caused me to miss my connection in Denver. Further, this connecting flight was then Later canceled. This required me to stay another night an hour and a half away, and rent the rental car for an additional Night. I am still waiting for United Airlines to reimburse me for the inconvenience and Expense of having to extend my rental Car for An additional Day. See attached receipt. https://share.icloud.com/photos/0f5ns2AaeIr7w6t_uH1qfPBUg

Everything you need to know for your flight from Rapid City to Idaho

Information on your arrival and departure airports

Rapid City (RAP)