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Cheap flights from Rapid City to Washington, D.C. from $146

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rapid City to Washington, D.C. departing on 7/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Rapid City to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:35 pm - 11:34 pm
RAP
-
IAD
6h 59m
1 stop
United Airlines Logo
6:15 am - 10:45 am
IAD
-
RAP
6h 30m
1 stop
$349United Airlines
Fri, May 8 - Sun, May 10
American Airlines Logo
1:08 pm - 11:26 pm
RAP
-
IAD
8h 18m
1 stop
American Airlines Logo
9:19 am - 4:27 pm
IAD
-
RAP
9h 08m
2 stops
$366American Airlines
Sat, May 2 - Wed, May 6
American Airlines Logo
6:00 am - 7:33 pm
RAP
-
IAD
11h 33m
2 stops
American Airlines Logo
9:19 am - 4:27 pm
IAD
-
RAP
9h 08m
2 stops
$371American Airlines
Sat, May 2 - Wed, May 6
Multiple Airlines Logo
10:04 am - 10:12 am
RAP
-
IAD
22h 08m
2 stops
Multiple Airlines Logo
4:01 pm - 11:06 am
IAD
-
RAP
21h 05m
1 stop
$372Multiple Airlines
Fri, May 29 - Tue, Jun 2
American Airlines Logo
6:00 am - 5:09 pm
RAP
-
IAD
9h 09m
1 stop
American Airlines Logo
7:00 am - 12:38 pm
IAD
-
RAP
7h 38m
1 stop
$380American Airlines
Sat, May 2 - Wed, May 6
Delta Logo
3:55 pm - 11:32 pm
RAP
-
IAD
5h 37m
1 stop
Delta Logo
6:37 pm - 10:20 pm
IAD
-
RAP
5h 43m
1 stop
$385Delta
Fri, May 1 - Tue, May 5
Delta Logo
3:55 pm - 11:32 pm
RAP
-
IAD
5h 37m
1 stop
Delta Logo
6:00 am - 10:17 am
IAD
-
RAP
6h 17m
1 stop
$399Delta
Tue, Apr 28 - Sat, May 2
United Airlines Logo
12:05 pm - 9:18 pm
RAP
-
IAD
7h 13m
1 stop
United Airlines Logo
6:15 am - 10:45 am
IAD
-
RAP
6h 30m
1 stop
$400United Airlines
Thu, May 7 - Sun, May 10
Delta Logo
10:58 am - 12:42 am
RAP
-
IAD
11h 44m
2 stops
Delta Logo
6:00 am - 10:17 am
IAD
-
RAP
6h 17m
1 stop
$404Delta
Tue, Apr 28 - Sat, May 2
American Airlines Logo
6:00 am - 6:41 pm
RAP
-
IAD
10h 41m
2 stops
American Airlines Logo
6:25 am - 4:27 pm
IAD
-
RAP
12h 02m
2 stops
$409American Airlines
Tue, Apr 28 - Sat, May 2

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Delta flights from Rapid City to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Rapid City to Washington, D.C. Dulles Intl Airport flight tickets
Delta
May 1
RAP3:55 pmRapid City
5h 37m
1 stop
IAD11:32 pmWashington, D.C. Dulles Intl
May 5
IAD6:37 pmWashington, D.C. Dulles Intl
5h 43m
1 stop
RAP10:20 pmRapid City
$385
Delta
Apr 28
RAP3:55 pmRapid City
5h 37m
1 stop
IAD11:32 pmWashington, D.C. Dulles Intl
May 2
IAD6:00 amWashington, D.C. Dulles Intl
6h 17m
1 stop
RAP10:17 amRapid City
$399
Delta
Apr 28
RAP10:58 amRapid City
11h 44m
2 stops
IAD12:42 amWashington, D.C. Dulles Intl
May 2
IAD6:00 amWashington, D.C. Dulles Intl
6h 17m
1 stop
RAP10:17 amRapid City
$404

American Airlines flights from Rapid City to Washington, D.C. Dulles Intl Airport

Our best American Airlines deals on Rapid City to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
May 2
RAP1:08 pmRapid City
8h 18m
1 stop
IAD11:26 pmWashington, D.C. Dulles Intl
May 6
IAD9:19 amWashington, D.C. Dulles Intl
9h 08m
2 stops
RAP4:27 pmRapid City
$366
American Airlines
May 2
RAP6:00 amRapid City
11h 33m
2 stops
IAD7:33 pmWashington, D.C. Dulles Intl
May 6
IAD9:19 amWashington, D.C. Dulles Intl
9h 08m
2 stops
RAP4:27 pmRapid City
$371
American Airlines
May 2
RAP6:00 amRapid City
9h 09m
1 stop
IAD5:09 pmWashington, D.C. Dulles Intl
May 6
IAD7:00 amWashington, D.C. Dulles Intl
7h 38m
1 stop
RAP12:38 pmRapid City
$380

momondo Fare Finder

 
Customize your flight search to find flights from Rapid City to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated April 17, 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

Fri 5/8

2:35 pm-11:34 pm

1 stop6h 59m

Washington, D.C. Dulles Intl

Sun 5/10

6:15 am-10:45 am

1 stop6h 30m

$349

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sat 5/2

1:08 pm-11:26 pm

1 stop8h 18m

Washington, D.C. Dulles Intl

Wed 5/6

9:19 am-4:27 pm

2 stops9h 08m

$366

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sat 5/2

6:00 am-7:33 pm

2 stops11h 33m

Washington, D.C. Dulles Intl

Wed 5/6

9:19 am-4:27 pm

2 stops9h 08m

$371

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Fri 5/29

10:04 am-10:12 am

2 stops22h 08m

Washington, D.C. Dulles Intl

Tue 6/2

4:01 pm-11:06 am

1 stop21h 05m

$372

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sat 5/2

6:00 am-5:09 pm

1 stop9h 09m

Washington, D.C. Dulles Intl

Wed 5/6

7:00 am-12:38 pm

1 stop7h 38m

$380
Quickest round-trip

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Fri 5/1

3:55 pm-11:32 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

Tue 5/5

6:37 pm-10:20 pm

1 stop5h 43m

$385

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Tue 4/28

3:55 pm-11:32 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

Sat 5/2

6:00 am-10:17 am

1 stop6h 17m

$399

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Thu 5/7

12:05 pm-9:18 pm

1 stop7h 13m

Washington, D.C. Dulles Intl

Sun 5/10

6:15 am-10:45 am

1 stop6h 30m

$400

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Tue 4/28

10:58 am-12:42 am

2 stops11h 44m

Washington, D.C. Dulles Intl

Sat 5/2

6:00 am-10:17 am

1 stop6h 17m

$404

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Tue 4/28

6:00 am-6:41 pm

2 stops10h 41m

Washington, D.C. Dulles Intl

Sat 5/2

6:25 am-4:27 pm

2 stops12h 02m

$409

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Rapid City to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Rapid City to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 64% on your flight if you consider stops on a Rapid City to Washington, D.C. Dulles Intl Airport flight.

When to book flights from Rapid City to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Rapid City to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Rapid City to Washington, D.C. Dulles Intl Airport (RAP to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rapid City to Washington, D.C. Dulles Intl Airport

Fastest flight time

5h 37m

Direct flights

None
The fastest flight from Rapid City to Washington, D.C. Dulles Intl Airport takes 5h 37m
There are no direct flights from Rapid City to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Rapid City to Washington, D.C. Dulles Intl Airport.
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Frequently asked questions about flying from Rapid City to Washington, D.C. Dulles Intl Airport

  • How far is Rapid City to Washington, D.C. Dulles Intl by plane?

    Rapid City and Washington, D.C. Dulles Intl are 1372.9 mi apart from one another. Typically, this will take 5h 37m by plane in normal conditions.

  • When did momondo last update prices for flights from Rapid City Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Rapid City Airport to Washington, D.C. Dulles Intl Airport are updated daily.

  • How many operators does momondo search for flights from Rapid City Airport to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Rapid City Airport to Washington, D.C. Dulles Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rapid City Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Rapid City to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Rapid City to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Rapid City to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $288Free CancellationRating
7.4
9,602 reviews
Search United Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Laurel
Colonial Beach
Gaithersburg
Towson
Fredericksburg
Silver Spring
Rockville
Sterling
Manassas
Tysons
Linthicum Heights
Bethesda
Fairfax

Why use momondo?

Why should I use momondo to find a flight deal from Rapid City to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Rapid City to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Rapid City to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Rapid City to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from Rapid City to Washington, D.C.?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Rapid City.

I’m not ready to book a flight from Rapid City to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Rapid City to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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