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Dulles Intl

$206+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — IAD
Jun 28 — Jul 51
Sat 6/28
Sat 7/5
1 adult, Economy
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Cheap 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 June 23, 2025.

Round-trip from

$269
(Delta)

One-way from

$206
(United Airlines)

Popular in

November

Cheapest in

January

Average price

$751
From Rapid City to Washington, D.C. Dulles Intl
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One-way flight from Rapid City to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 12% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 June 23, 2025.

This Delta deal was found by Cheapflights users on 6/23. 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.
Tue 7/224:30 pmRAP - IAD
1 stop4h 55mDelta
Tue 7/296:20 amIAD - RAP
1 stop5h 53mDelta
Deal found 6/23$269
This United Airlines deal was found by Cheapflights users on 6/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/214:38 pmRAP - IAD
1 stop6h 07mUnited Airlines
Wed 7/236:35 amIAD - RAP
1 stop5h 45mUnited Airlines
Deal found 6/23$415
This American Airlines deal was found by Cheapflights users on 6/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amRAP - IAD
1 stop8h 50mAmerican Airlines
Mon 10/68:09 pmIAD - RAP
2 stops21h 56mAmerican Airlines
Deal found 6/22$453

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 June 23, 2025.
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

Rapid City

Fly to

Dulles Intl

Route

Depart

Return

Price

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Tue 7/22

4:30 pm-11:25 pm

1 stop4h 55m

Washington, D.C. Dulles Intl

Tue 7/29

6:20 am-10:13 am

1 stop5h 53m

$269

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Mon 7/21

4:38 pm-12:45 am

1 stop6h 07m

Washington, D.C. Dulles Intl

Wed 7/23

6:35 am-10:20 am

1 stop5h 45m

$415

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Fri 10/3

6:00 am-4:50 pm

1 stop8h 50m

Washington, D.C. Dulles Intl

Mon 10/6

8:09 pm-11:45 am

2 stops17h 36m

$453

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Fri 8/15

6:30 am-4:10 pm

1 stop7h 40m

$206

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Fri 8/15

12:10 pm-10:56 pm

2 stops8h 46m

$211

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Wed 7/9

10:53 am-10:55 pm

2 stops10h 02m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/22

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

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 June 23, 2025.
Delta
8.0
Very good
7,965 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,965 reviews
Delta
8.0
Very good
7,965 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,831 reviews
Delta
8.0
Very good
7,965 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,965 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines flying 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 Delta. Our recent data shows that you can find tickets from as low as $269 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $415 and $453 round-trip. Users have found that Delta is 48% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Rapid City to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $206. American Airlines flights start at $211 while deals on Delta start at $275 one-way.

  • 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.

  • What is the cheapest month to book a flight from Rapid City to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Rapid City to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Rapid City to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $346). 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 Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
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Fredericksburg
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Fairfax
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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 June 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$364Average$572FlexibilityNo cancel feeOn-time69%

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