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Dulles Intl

$281+ Cheap flights from Rapid City (RAP) to Dulles Intl (IAD)

RAP — IAD
Oct 10 — Oct 171
Sat 10/10
Sat 10/17
1 adult, Economy
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Cheap flight deals from Rapid City to Dulles Intl

Cheapest flights from Rapid City to Dulles Intl

Tue 10/204:38 pm -
1 stop4h 48m
Wed 10/286:59 pm -
1 stop5h 31m
Deal found 9/10$281
Tue 11/101:09 pm -
1 stop8h 21m
Sat 11/147:18 am -
1 stop7h 21m
Deal found 9/7$310
Thu 10/14:31 pm -
1 stop4h 52m
Sun 10/46:10 am -
1 stop5h 51m
Deal found 9/9$339

Find flight deals from Rapid City to Dulles Intl

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$281
(Delta)

Popular in

May

Cheapest in

November

Average price

$396
Provider with most accurate pricing for Rapid City-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Rapid City-Washington, D.C. Dulles Intl flights.
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From Rapid City to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 13% potential increase in price ($81 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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 Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Tue 10/20

4:38 pm-11:26 pm

1 stop4h 48m

Washington, D.C. Dulles Intl

Wed 10/28

6:59 pm-10:30 pm

1 stop5h 31m

$281

Rapid CityWashington, D.C.

RAP Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Wed 11/25

2:23 pm-12:41 am

2 stops8h 18m

Washington, D.C. Dulles Intl

Tue 12/1

7:06 pm-10:46 pm

1 stop5h 40m

$306

Rapid CityWashington, D.C.

RAP Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Tue 11/10

2:23 pm-12:41 am

2 stops8h 18m

Washington, D.C. Dulles Intl

Sat 11/14

8:00 am-3:54 pm

2 stops9h 54m

$311

Rapid CityWashington, D.C.

RAP Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Wed 10/28

12:51 pm-11:23 pm

1 stop8h 32m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$329

Rapid CityWashington, D.C.

RAP Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Fri 10/23

1:37 pm-10:52 pm

1 stop7h 15m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$329

Rapid CityWashington, D.C.

RAP Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Wed 10/28

6:39 am-5:10 pm

2 stops8h 31m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$334

Rapid CityWashington, D.C.

RAP Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Mon 10/26

2:37 pm-11:26 pm

1 stop6h 49m

Washington, D.C. Dulles Intl

Sat 10/31

11:10 am-10:30 pm

2 stops13h 20m

$335

Rapid CityWashington, D.C.

RAP Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Thu 10/1

1:37 pm-10:52 pm

1 stop7h 15m

Washington, D.C. Dulles Intl

Sun 10/4

6:10 am-10:15 am

1 stop6h 05m

$339

Rapid CityWashington, D.C.

RAP Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Fri 10/23

2:37 pm-12:42 am

2 stops8h 05m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$344

Rapid CityWashington, D.C.

RAP Rapid City - IAD Washington, D.C. Dulles Intl

RAPIAD

Rapid City

Thu 10/22

1:37 pm-10:52 pm

1 stop7h 15m

Washington, D.C. Dulles Intl

Sun 10/25

6:12 am-10:17 am

1 stop6h 05m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/7

Showing 1-10 of 14 resultsSorted by cheapest first
1
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Compare providers for flights from Rapid City to Dulles Intl

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 September.
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

Reviews of airlines servicing Dulles Intl

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
10,194 reviews

Food

6.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

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
10,194 reviews
United Airlines
7.4
Good
10,194 reviews

Food

6.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

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

  • 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 4h 48m. The distance from Rapid City to Washington, D.C. Dulles Intl Airport is about 1364 mi.

  • 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.

  • 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
Arlington
Owings Mills
Tysons
Lanham
Reston
Chantilly
Herndon
Rockville
Hyattsville
Fredericksburg
Woodbridge
Falls Church
Sterling
Hanover
Laurel
Oxon Hill
Clinton
Hunt Valley
Silver Spring

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Rapid City to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$351FlexibilityNo cancel feeOn-time69%

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