HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$179+ Cheap flights from Rapid City (RAP) to Dulles Intl (IAD)

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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — IAD
May 25 — Jun 11
Mon 5/25
Mon 6/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Rapid City to Dulles Intl 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 Dulles Intl

Cheapest flights from Rapid City to Dulles Intl
Explore the most affordable flight options available from Rapid City to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2026.

This Delta deal was found by Cheapflights users on 4/24. 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.
Wed 6/32:36 pm
RAP
-
IAD
1 stop7h 03m
Delta
Sat 6/611:58 am
IAD
-
RAP
1 stop5h 17m
Delta
Deal found 4/24$271
This United Airlines deal was found by Cheapflights users on 4/24. 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 5/303:43 pm
RAP
-
IAD
1 stop6h 48m
United Airlines
Tue 6/22:35 pm
IAD
-
RAP
1 stop6h 38m
United Airlines
Deal found 4/24$332
This United Airlines deal was found by Cheapflights users on 4/20. 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 7/306:00 am
RAP
-
IAD
1 stop6h 08m
United Airlines
Tue 8/46:10 am
IAD
-
RAP
1 stop6h 14m
United Airlines
Deal found 4/20$341
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Thu 7/3011:50 am
RAP
-
IAD
1 stop5h 50m
American Airlines
Tue 8/46:23 am
IAD
-
RAP
1 stop7h 48m
American Airlines
Deal found 4/21$349
This United Airlines deal was found by Cheapflights users on 4/20. 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 5/95:20 am
RAP
-
IAD
1 stop6h 01m
United Airlines
Sun 5/243:39 pm
IAD
-
RAP
1 stop7h 58m
United Airlines
Deal found 4/20$355
This Delta deal was found by Cheapflights users on 4/22. 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 5/53:55 pm
RAP
-
IAD
1 stop5h 37m
Delta
Sat 5/96:00 am
IAD
-
RAP
1 stop6h 32m
Delta
Deal found 4/22$359
This Delta deal was found by Cheapflights users on 4/23. 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.
Thu 7/3011:00 am
RAP
-
IAD
2 stops10h 14m
Delta
Tue 8/45:26 pm
IAD
-
RAP
2 stops7h 01m
Delta
Deal found 4/23$375
This Delta deal was found by Cheapflights users on 4/24. 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.
Mon 6/2211:10 am
RAP
-
IAD
2 stops10h 04m
Delta
Wed 6/246:00 am
IAD
-
RAP
1 stop6h 25m
Delta
Deal found 4/24$391

Find flight deals from Rapid City to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to Dulles Intl (IAD). 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 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(Delta)

One-way from

$179
(Delta)

Popular in

December

Cheapest in

July

Average price

$487
Provider with most accurate pricing for Rapid City-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rapid City-Washington, D.C. Dulles Intl flights.
Search Deals
From Rapid City to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Rapid City to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($33 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 Rapid City to Dulles Intl 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 25, 2026.
Use the filters below to find and compare flights from Rapid City to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Wed 6/3

2:36 pm-12:51 am

2 stops8h 15m

Washington, D.C. Dulles Intl

Sat 6/6

11:58 am-3:15 pm

1 stop5h 17m

$276

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Thu 7/30

6:00 am-2:08 pm

1 stop6h 08m

Washington, D.C. Dulles Intl

Tue 8/4

6:10 am-10:24 am

1 stop6h 14m

$341

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Tue 5/5

3:55 pm-11:32 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

Sat 5/9

6:00 am-10:32 am

1 stop6h 32m

$359
Quickest round-trip

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Mon 6/15

4:30 pm-11:20 pm

1 stop4h 50m

Washington, D.C. Dulles Intl

Thu 6/25

6:00 am-10:25 am

1 stop6h 25m

$404

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Wed 6/3

10:19 am-6:34 pm

1 stop6h 15m

Washington, D.C. Dulles Intl

Sat 6/6

6:14 am-12:17 pm

1 stop8h 03m

$433

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Tue 8/11

5:00 am-1:30 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Tue 8/11

5:30 pm-11:55 am

2 stops20h 25m

$476

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Tue 5/5

12:05 pm-7:28 pm

1 stop5h 23m

Washington, D.C. Dulles Intl

Fri 5/8

3:15 pm-9:46 pm

1 stop8h 31m

$477

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sat 5/9

2:35 pm-11:34 pm

1 stop6h 59m

Washington, D.C. Dulles Intl

Wed 5/13

3:15 pm-9:46 pm

1 stop8h 31m

$495

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Fri 7/3

2:59 pm-11:20 pm

1 stop6h 21m

Washington, D.C. Dulles Intl

Sat 7/11

6:00 am-10:19 am

1 stop6h 19m

$561

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Fri 7/3

10:19 am-12:10 am

2 stops11h 51m

Washington, D.C. Dulles Intl

Sun 7/5

5:03 am-11:17 am

1 stop8h 14m

$616

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

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

Compare providers for flights from Rapid City to Dulles Intl

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 Rapid City to Dulles Intl 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 Rapid City-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rapid City-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rapid City-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rapid City-Washington, D.C. Dulles Intl Airport 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 Rapid City-Washington, D.C. Dulles Intl Airport 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 Rapid City to Dulles Intl

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

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

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated April 25, 2026.
Read reviews from past customers who have flown United Airlines from Rapid City to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,650 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,650 reviews
United Airlines
7.4
Good
9,650 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

Related info for your journey

Find useful and relevant information for your journey from Rapid City to Dulles Intl. 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 from for flights from Rapid City to Washington, D.C. Dulles Intl?

    For a flight from Rapid City to Washington, D.C. Dulles Intl, you will be flying from Rapid City. Rapid City (RAP) is just 9.0 mi from the center of the city. Rapid City is the only Rapid City airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 1 airline has flights to Washington, D.C. Dulles Intl from Rapid City on a regular basis.

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

    Departing from Rapid City to Washington, D.C. Dulles Intl Airport will take you 6h 08m. The distance from Rapid City to Washington, D.C. Dulles Intl Airport is about 1364 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Rapid City to Washington, D.C. Dulles Intl Airport is United Airlines. Our recent data shows that you can find tickets from as low as $288 on this airline. Users have found that United Airlines is 39% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Rapid City to Dulles Intl 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Woodbridge
Silver Spring
Herndon
Rockville
Hyattsville
Fredericksburg
Hanover
Laurel
Manassas
Largo
Upper Marlboro
Waldorf
Bowie
Clinton
Hunt Valley

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 Rapid City to Dulles Intl

Discover the top airline that operate flights from Rapid City to Dulles Intl. 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 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$374FlexibilityNo 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.
Site
©2026 Cheapflights