HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$122+ Cheap flights from Rapid City to Denver (RAP - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Rapid City to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Rapid City to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$189
(United Airlines)

One-way from

$122
(Kiwi.com)

Popular in

February

Cheapest in

June

Average price

$319

Good round-trip deal

$352 or less

Good one-way deal

$245 or less
From Rapid City to Denver Intl
Search Deals
One-way flight from Rapid City to Denver Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Rapid City to Denver Intl.
Search Deals
Price to beat on a one-way flight from Rapid City to Denver Intl.
Search Deals

Find flight deals from Rapid City to Denver

Cheapest flights from Rapid City to Denver
Explore the most affordable flight options available from Rapid City to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:00 amRAP - DEN
Nonstop1h 17mUnited Airlines
Mon 10/207:48 amDEN - RAP
Nonstop1h 22mUnited Airlines
Deal found 9/10$189
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:45 amRAP - DEN
Nonstop1h 41mUnited Airlines
Mon 12/223:36 pmDEN - RAP
Nonstop1h 24mUnited Airlines
Deal found 9/11$219
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:00 amRAP - DEN
Nonstop1h 17mUnited Airlines
Thu 9/257:20 pmDEN - RAP
Nonstop1h 14mUnited Airlines
Deal found 9/11$224
This lol.travel deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:35 pmRAP - DEN
Nonstop1h 34mUnited Airlines
Mon 10/67:48 amDEN - RAP
Nonstop1h 22mUnited Airlines
Deal found 9/11$243
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:00 amRAP - DEN
Nonstop1h 17mUnited Airlines
Fri 10/315:30 pmDEN - RAP
Nonstop1h 13mUnited Airlines
Deal found 9/9$247
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:10 amRAP - DEN
Nonstop1h 23mUnited Airlines
Sat 11/2912:10 amDEN - RAP
Nonstop1h 15mUnited Airlines
Deal found 9/11$249
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:00 amRAP - DEN
Nonstop1h 17mUnited Airlines
Sun 10/57:20 pmDEN - RAP
Nonstop1h 14mUnited Airlines
Deal found 9/9$251
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/158:45 amRAP - DEN
Nonstop1h 28mUnited Airlines
Mon 11/177:55 amDEN - RAP
Nonstop1h 20mUnited Airlines
Deal found 9/10$254
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/245:30 amRAP - DEN
Nonstop1h 23mUnited Airlines
Sun 9/288:50 pmDEN - RAP
Nonstop1h 22mUnited Airlines
Deal found 9/9$259
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/210:22 amRAP - DEN
Nonstop1h 40mUnited Airlines
Sat 11/87:12 pmDEN - RAP
Nonstop1h 14mUnited Airlines
Deal found 9/9$274
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/35:50 pmRAP - DEN
Nonstop1h 34mUnited Airlines
Wed 10/87:20 pmDEN - RAP
Nonstop1h 14mUnited Airlines
Deal found 9/9$279
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:00 amRAP - DEN
Nonstop1h 17mUnited Airlines
Mon 9/293:40 pmDEN - RAP
Nonstop1h 20mUnited Airlines
Deal found 9/11$284

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rapid City to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Rapid City to Denver that are best for you.

Fly from

Rapid City

Fly to

Denver

Route

Depart

Return

Price

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Thu 10/16

7:00 am-8:17 am

Nonstop1h 17m

Denver Intl

Mon 10/20

7:48 am-9:10 am

Nonstop1h 22m

$189

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Fri 10/24

9:56 am-11:30 am

Nonstop1h 34m

Denver Intl

Sun 10/26

5:30 pm-6:43 pm

Nonstop1h 13m

$189

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Fri 10/31

10:22 am-12:02 pm

Nonstop1h 40m

Denver Intl

Sun 11/2

5:30 pm-6:43 pm

Nonstop1h 13m

$189

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Thu 10/9

8:30 am-9:55 am

Nonstop1h 25m

Denver Intl

Thu 10/16

5:27 pm-6:40 pm

Nonstop1h 13m

$189

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Fri 11/21

11:15 am-12:45 pm

Nonstop1h 30m

Denver Intl

Mon 11/24

7:55 am-9:15 am

Nonstop1h 20m

$189

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Wed 10/8

5:30 am-6:56 am

Nonstop1h 26m

Denver Intl

Wed 10/15

5:27 pm-6:40 pm

Nonstop1h 13m

$189

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Thu 9/18

7:00 am-8:17 am

Nonstop1h 17m

Denver Intl

Thu 9/25

7:20 pm-8:34 pm

Nonstop1h 14m

$224

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Fri 9/26

8:30 am-9:55 am

Nonstop1h 25m

Denver Intl

Tue 9/30

2:40 pm-4:00 pm

Nonstop1h 20m

$224

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Thu 11/27

5:15 am-6:55 am

Nonstop1h 40m

Denver Intl

Sun 11/30

7:12 pm-8:26 pm

Nonstop1h 14m

$249

Rapid CityDenver

RAP - DEN

RAPDEN

Rapid City

Thu 10/23

5:58 pm-3:59 am

1 stop10h 01m

$122

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 19 results
1
2

Best time to book a flight from Rapid City to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Rapid City with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Rapid City to Denver

What is the cheapest month to book a flight from Rapid City to Denver?

Currently, October is the cheapest month in which you can book a flight from Rapid City to Denver (average of $197). Flying from Rapid City to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from RAP to DEN?

Find hourly flight availability from Rapid City to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Rapid City to Denver in the afternoon. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Rapid City to Denver, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Rapid City to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Rapid City to Denver?

    If you book a flight from Rapid City to Denver, you will be flying from Rapid City to Denver Intl. Flights to Denver Intl (DEN) from Rapid City (RAP) take 1h 17m for a nonstop flight. There are 8 flights from Rapid City to Denver per day from 1 airline.

  • How popular is this Rapid City to Denver flight route?

    Flights from Rapid City to Denver Intl have been viewed 43 times in the past calendar month.

  • How long is the flight from Rapid City to Denver?

    A quick flight from Rapid City to Denver can take about 1h 17m. United Airlines provides one of the quickest options available for as low as $189. The distance from Rapid City to Denver is about 300 mi. All flights are typically nonstop.

  • What is the cheapest airline to fly from Rapid City to Denver round-trip?

    United Airlines, at $189, was found to be the cheapest airline from Rapid City to Denver.. United Airlines is currently priced 36% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Rapid City to Denver?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Rapid City to Denver on time: United Airlines (67%), SkyWest Airlines (65%), Copa Airlines (56%).

  • What are the cheapest flights from Rapid City to Denver?

    Looking for the cheapest flight from Rapid City to Denver? While on average our users pay $723, our data indicates the cheapest price to be $169. The most popular route (Rapid City - Denver Intl), is priced around $189.

  • Can I find deals for flights from Rapid City to Denver that include hotel bookings?

    Yes. In addition to deals on Rapid City to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Rapid City to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rapid City to Denver.

  • Can I find deals for business class flights from Rapid City to Denver?

    Yes. Cheapflights offers flight deals from Rapid City to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Rapid City to Denver?

    Currently, October is the cheapest month in which you can book a flight from Rapid City to Denver (average of $197). Flying from Rapid City to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Black Hawk
Golden
Winter Park
Broomfield
Greeley
Lone Tree
Lakewood
Cripple Creek
Thornton
Silverthorne
Frisco
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Rapid City to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Denver flights
Watertown to Denver flights
Pierre to Denver flights
Aberdeen to Denver flights
Sioux Falls to Colorado Springs flights

Top airline flying from Rapid City to Denver

Discover the top airline that operate flights from Rapid City to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$189Average$292FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.