HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Rapid City

$140+ Cheap flights from Dulles Intl (IAD) to Rapid City (RAP)

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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — RAP
May 3 — May 101
Sun 5/3
Sun 5/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Rapid City 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 Dulles Intl to Rapid City

Cheapest flights from Dulles Intl to Rapid City
Explore the most affordable flight options available from Dulles Intl to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.

This American Airlines deal was found by Cheapflights users on 4/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:18 am
IAD
-
RAP
1 stop7h 59m
American Airlines
Wed 6/311:50 am
RAP
-
IAD
1 stop5h 43m
American Airlines
Deal found 4/1$349
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:00 am
IAD
-
RAP
1 stop6h 17m
Delta
Sat 5/23:55 pm
RAP
-
IAD
1 stop5h 37m
Delta
Deal found 4/1$350
This United Airlines deal was found by Cheapflights users on 3/29. 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 5/296:10 am
IAD
-
RAP
1 stop6h 14m
United Airlines
Fri 6/56:00 am
RAP
-
IAD
1 stop6h 08m
United Airlines
Deal found 3/29$362
This United Airlines deal was found by Cheapflights users on 4/1. 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 7/36:10 am
IAD
-
RAP
1 stop6h 14m
United Airlines
Thu 7/94:36 pm
RAP
-
IAD
1 stop6h 09m
United Airlines
Deal found 4/1$368
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Mon 4/276:15 am
IAD
-
RAP
1 stop6h 21m
United Airlines
Mon 5/49:30 am
RAP
-
IAD
1 stop6h 00m
United Airlines
Deal found 3/30$371
This United Airlines deal was found by Cheapflights users on 3/29. 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 8/26:10 am
IAD
-
RAP
1 stop6h 14m
United Airlines
Wed 8/125:00 am
RAP
-
IAD
1 stop6h 30m
United Airlines
Deal found 3/29$373
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:40 pm
IAD
-
RAP
1 stop5h 18m
Delta
Thu 8/274:00 pm
RAP
-
IAD
1 stop5h 29m
Delta
Deal found 3/31$379
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Tue 4/145:26 pm
IAD
-
RAP
1 stop6h 15m
United Airlines
Sat 4/182:47 pm
RAP
-
IAD
1 stop6h 47m
United Airlines
Deal found 3/30$399
This United Airlines deal was found by Cheapflights users on 4/2. 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 10/226:20 am
IAD
-
RAP
1 stop6h 33m
United Airlines
Wed 10/287:05 am
RAP
-
IAD
1 stop7h 35m
United Airlines
Deal found 4/2$403
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:37 pm
IAD
-
RAP
1 stop5h 43m
Delta
Fri 5/84:33 pm
RAP
-
IAD
1 stop5h 05m
Delta
Deal found 4/1$404

Find flight deals from Dulles Intl to Rapid City

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Rapid City (RAP). 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 April 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(United Airlines)

One-way from

$140
(Kiwi.com)

Popular in

May

Cheapest in

November

Average price

$408
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Rapid City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Rapid City flights.
Search Deals
From Washington, D.C. Dulles Intl to Rapid City
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Rapid City
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($146 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Rapid City 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 April 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Rapid City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Mon 4/27

6:15 am-10:36 am

1 stop6h 21m

Rapid City

Mon 5/4

9:30 am-5:30 pm

1 stop6h 00m

$371

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Sun 8/2

6:10 am-10:24 am

1 stop6h 14m

Rapid City

Wed 8/12

5:00 am-1:30 pm

1 stop6h 30m

$373

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Mon 4/20

6:15 am-10:36 am

1 stop6h 21m

Rapid City

Wed 4/22

9:20 am-5:28 pm

1 stop6h 08m

$411

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Wed 5/6

5:07 pm-10:20 pm

2 stops7h 13m

Rapid City

Mon 5/11

2:36 pm-11:38 pm

1 stop7h 02m

$412

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Tue 6/2

2:35 pm-7:13 pm

1 stop6h 38m

Rapid City

Sat 6/6

5:00 am-1:26 pm

1 stop6h 26m

$434

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Tue 9/1

4:20 pm-10:23 pm

1 stop8h 03m

Rapid City

Sat 9/5

11:08 am-7:21 pm

1 stop6h 13m

$439

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Tue 4/14

5:07 pm-10:20 pm

2 stops7h 13m

Rapid City

Sat 4/18

3:55 pm-11:32 pm

1 stop5h 37m

$440

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Sat 9/19

6:30 am-12:24 pm

1 stop7h 54m

Rapid City

Sat 9/26

5:30 am-1:27 pm

1 stop5h 57m

$454
Quickest round-trip

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Sat 5/23

5:38 pm-9:37 pm

1 stop5h 59m

Rapid City

Wed 5/27

1:35 pm-9:22 pm

1 stop5h 47m

$464
Cheapest one-way

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Sat 7/25

6:30 am-12:29 pm

1 stop7h 59m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Dulles Intl to Rapid City

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Rapid City in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Rapid City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Rapid City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Rapid City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Rapid City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Rapid City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Rapid City

Have a flexible travel schedule? Discover the best time to fly to Rapid City from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Rapid City

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Rapid City?

Reviews of airlines servicing Rapid City

Get insights into the airlines that provide service to Rapid City. 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 Rapid City. Reviews last updated April 3, 2026.
See what other customers who have flown with United Airlines from Washington, D.C. Dulles Intl Airport to Rapid City have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,538 reviews

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,538 reviews
United Airlines
7.4
Good
9,538 reviews

Crew

8.1

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

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

  • What airport do you fly into for flights to Rapid City from Washington, D.C. Dulles Intl?

    If you book a flight to Rapid City from Washington, D.C. Dulles Intl, you will be flying to Rapid City, which is the city’s only airport. Rapid City (RAP) is located 9.0 mi from the center of Rapid City. There are 0 flights from Washington, D.C. Dulles Intl to Rapid City per day from 1 airline.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Rapid City?

    Airlines like United Airlines and Delta fly from Washington, D.C. Dulles Intl Airport to Rapid City in about 6h 21m. The time it takes to get you to your destination can typically vary by up to 52m. The distance from Washington, D.C. Dulles Intl Airport to Rapid City is about 1364 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Rapid City round-trip?

    Flying on United Airlines is currently your cheapest option to Rapid City, with prices starting at $304. Users have found that United Airlines is 37% cheaper than the other options available to this destination.

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

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

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

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

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

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

See more FAQs

Traveling to a place near Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
Keystone
Deadwood
Sturgis
Spearfish

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.

Top airline flying from Dulles Intl to Rapid City

Discover the top airline that operate flights from Dulles Intl to Rapid City. 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 April 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$304Average$488FlexibilityNo 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.