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Rapid City

$193+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — RAP
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap 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 August 20, 2025.

Round-trip from

$269
(Delta)

One-way from

$193
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$464
From Washington, D.C. Dulles Intl to Rapid City
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One-way flight from Washington, D.C. Dulles Intl to Rapid City
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Highest demand for flights based on searches. 22% potential increase in price ($139 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/18. 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 10/2512:35 pmIAD - RAP
1 stop8h 05mUnited Airlines
Wed 10/295:15 amRAP - IAD
1 stop6h 03mUnited Airlines
Deal found 8/18$286
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/175:47 pmIAD - RAP
1 stop6h 12mUnited Airlines
Tue 9/238:32 amRAP - IAD
1 stop8h 41mUnited Airlines
Deal found 8/18$316
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Sat 10/256:11 amIAD - RAP
1 stop7h 25mAmerican Airlines
Wed 10/295:32 amRAP - IAD
2 stops11h 22mAmerican Airlines
Deal found 8/18$329
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Mon 9/226:35 amIAD - RAP
1 stop5h 47mUnited Airlines
Fri 10/311:15 amRAP - IAD
1 stop6h 08mUnited Airlines
Deal found 8/20$344
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/165:47 pmIAD - RAP
1 stop6h 12mUnited Airlines
Tue 9/233:19 pmRAP - IAD
1 stop5h 58mUnited Airlines
Deal found 8/17$349
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/216:35 amIAD - RAP
1 stop5h 47mUnited Airlines
Tue 9/235:30 amRAP - IAD
1 stop5h 56mUnited Airlines
Deal found 8/19$351
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/42:39 pmIAD - RAP
1 stop6h 11mUnited Airlines
Tue 9/912:43 pmRAP - IAD
1 stop6h 24mUnited Airlines
Deal found 8/19$374
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:15 amIAD - RAP
1 stop5h 57mDelta
Wed 10/14:24 pmRAP - IAD
1 stop5h 14mDelta
Deal found 8/20$375
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Sun 10/266:11 amIAD - RAP
1 stop7h 37mAmerican Airlines
Wed 10/295:32 amRAP - IAD
2 stops11h 22mAmerican Airlines
Deal found 8/18$380
This United Airlines deal was found by Cheapflights users on 8/19. 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 9/82:39 pmIAD - RAP
1 stop6h 11mUnited Airlines
Wed 9/1010:15 amRAP - IAD
1 stop8h 52mUnited Airlines
Deal found 8/19$381
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/210:25 amIAD - RAP
1 stop6h 19mUnited Airlines
Sat 9/67:00 amRAP - IAD
1 stop7h 43mUnited Airlines
Deal found 8/18$387

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 August 20, 2025.
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

Dulles Intl

Fly to

Rapid City

Route

Depart

Return

Price

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Mon 1/19

6:15 am-10:05 am

1 stop5h 50m

Rapid City

Sat 1/24

10:40 am-7:00 pm

1 stop6h 20m

$269

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Sat 10/25

12:35 pm-6:40 pm

1 stop8h 05m

Rapid City

Wed 10/29

5:15 am-1:18 pm

1 stop6h 03m

$286

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Wed 9/17

5:47 pm-9:59 pm

1 stop6h 12m

Rapid City

Tue 9/23

8:32 am-7:13 pm

1 stop8h 41m

$316

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Sat 10/25

6:11 am-11:36 am

1 stop7h 25m

Rapid City

Wed 10/29

5:32 am-6:54 pm

2 stops11h 22m

$329

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Tue 9/23

5:47 pm-9:59 pm

1 stop6h 12m

Rapid City

Fri 10/3

11:15 am-7:23 pm

1 stop6h 08m

$344

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Wed 9/24

5:47 pm-9:59 pm

1 stop6h 12m

Rapid City

Fri 10/3

11:15 am-7:23 pm

1 stop6h 08m

$344

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Fri 8/29

12:55 pm-12:00 pm

3 stops25h 05m

$193

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Fri 8/29

4:13 pm-12:00 pm

2 stops21h 47m

$203

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Tue 9/23

6:35 am-10:22 am

1 stop5h 47m

$206

Washington, D.C.Rapid City

IAD - RAP

IADRAP

Washington, D.C. Dulles Intl

Mon 9/29

6:25 am-12:03 pm

1 stop7h 38m

$206

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 13 results
1
2

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

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

Find hourly flight availability from Dulles Intl to Rapid City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Rapid City, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 23% versus a flight at noon.

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 August 20, 2025.
See what other customers who have flown with United Airlines and American 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
8,928 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

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
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

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!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Food

6.6

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 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 2 different airlines.

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

    Airlines like Delta and United Airlines fly from Washington, D.C. Dulles Intl Airport to Rapid City in about 5h 50m. The time it takes to get you to your destination can typically vary by up to 2h 15m. 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 are the cheapest airlines flying 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 $326. Another option worth looking into is American Airlines, starting at $359 round trip. Users have found that United Airlines is 30% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as $203 on Allegiant Air. Other airlines that offer cheap prices include United Airlines from $206 and American Airlines from $206 one-way.

  • 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.

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

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Rapid City (average of $348). Flying from Washington, D.C. Dulles Intl Airport to Rapid City in June is currently the most expensive (average of $502). 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
Deadwood
Keystone
Sturgis
Spearfish

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Top 2 airlines flying from Dulles Intl to Rapid City

Discover the top 2 airlines 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$326Average$503FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$359Average$439FlexibilityNo cancel feeOn-time71%

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