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Cheap flights from Rapid City to Washington, D.C. from $256

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 7/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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
3:39 pm - 9:37 pm
IAD
-
RAP
7h 58m
1 stop
$289United Airlines
Sat, May 9 - Sun, May 24
United Airlines Logo
2:47 pm - 11:34 pm
RAP
-
IAD
6h 47m
1 stop
United Airlines Logo
6:30 am - 11:30 am
IAD
-
RAP
7h 00m
1 stop
$299United Airlines
Wed, Apr 15 - Mon, May 25
United Airlines Logo
2:42 pm - 11:34 pm
RAP
-
IAD
6h 52m
1 stop
United Airlines Logo
2:21 pm - 8:44 pm
IAD
-
RAP
8h 23m
1 stop
$399United Airlines
Mon, Mar 30 - Thu, Apr 2
Delta Logo
3:55 pm - 11:32 pm
RAP
-
IAD
5h 37m
1 stop
Delta Logo
6:00 am - 1:44 pm
IAD
-
RAP
9h 44m
2 stops
$404Delta
Wed, Apr 15 - Mon, May 25
United Airlines Logo
9:20 am - 5:09 pm
RAP
-
IAD
5h 49m
1 stop
United Airlines Logo
4:00 pm - 10:27 pm
IAD
-
RAP
8h 27m
1 stop
$427United Airlines
Mon, Mar 30 - Wed, Apr 1
Delta Logo
10:58 am - 11:03 pm
RAP
-
IAD
10h 05m
2 stops
Delta Logo
6:00 am - 1:44 pm
IAD
-
RAP
9h 44m
2 stops
$439Delta
Wed, Apr 15 - Mon, May 25
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
$468Delta
Sun, Apr 19 - Thu, Apr 23
Delta Logo
6:00 am - 1:32 pm
RAP
-
IAD
5h 32m
1 stop
Delta Logo
12:47 pm - 10:25 pm
IAD
-
RAP
11h 38m
2 stops
$484Delta
Fri, Mar 13 - Tue, Mar 17
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
$499Delta
Sun, Apr 19 - Thu, Apr 23
American Airlines Logo
1:08 pm - 11:26 pm
RAP
-
IAD
8h 18m
1 stop
American Airlines Logo
8:11 pm - 11:23 am
IAD
-
RAP
17h 12m
2 stops
$502American Airlines
Sun, Apr 19 - Thu, Apr 23

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

Our best United Airlines deals on Rapid City to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
May 9
RAP2:35 pmRapid City
6h 59m
1 stop
IAD11:34 pmWashington, D.C. Dulles Intl
May 24
IAD3:39 pmWashington, D.C. Dulles Intl
7h 58m
1 stop
RAP9:37 pmRapid City
$289
United Airlines
Apr 15
RAP2:47 pmRapid City
6h 47m
1 stop
IAD11:34 pmWashington, D.C. Dulles Intl
May 25
IAD6:30 amWashington, D.C. Dulles Intl
7h 00m
1 stop
RAP11:30 amRapid City
$299
United Airlines
Mar 30
RAP2:42 pmRapid City
6h 52m
1 stop
IAD11:34 pmWashington, D.C. Dulles Intl
Apr 2
IAD2:21 pmWashington, D.C. Dulles Intl
8h 23m
1 stop
RAP8:44 pmRapid City
$399

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
Apr 15
RAP3:55 pmRapid City
5h 37m
1 stop
IAD11:32 pmWashington, D.C. Dulles Intl
May 25
IAD6:00 amWashington, D.C. Dulles Intl
9h 44m
2 stops
RAP1:44 pmRapid City
$404
Delta
Apr 15
RAP10:58 amRapid City
10h 05m
2 stops
IAD11:03 pmWashington, D.C. Dulles Intl
May 25
IAD6:00 amWashington, D.C. Dulles Intl
9h 44m
2 stops
RAP1:44 pmRapid City
$439
Delta
Apr 19
RAP3:55 pmRapid City
5h 37m
1 stop
IAD11:32 pmWashington, D.C. Dulles Intl
Apr 23
IAD6:00 amWashington, D.C. Dulles Intl
6h 17m
1 stop
RAP10:17 amRapid City
$468

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 February 28, 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

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

Sun 5/24

3:39 pm-9:37 pm

1 stop7h 58m

$289

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Wed 4/15

2:47 pm-11:34 pm

1 stop6h 47m

Washington, D.C. Dulles Intl

Mon 5/25

6:30 am-11:30 am

1 stop7h 00m

$299

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Mon 3/30

2:42 pm-11:34 pm

1 stop6h 52m

Washington, D.C. Dulles Intl

Thu 4/2

2:21 pm-8:44 pm

1 stop8h 23m

$399

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Wed 4/15

3:55 pm-11:32 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

Mon 5/25

6:00 am-1:44 pm

2 stops9h 44m

$404

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Mon 3/30

9:20 am-5:09 pm

1 stop5h 49m

Washington, D.C. Dulles Intl

Wed 4/1

4:00 pm-10:27 pm

1 stop8h 27m

$427

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Wed 4/15

10:58 am-11:03 pm

2 stops10h 05m

Washington, D.C. Dulles Intl

Mon 5/25

6:00 am-1:44 pm

2 stops9h 44m

$439

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sun 4/19

3:55 pm-11:32 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

Thu 4/23

6:00 am-10:17 am

1 stop6h 17m

$468

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Fri 3/13

6:00 am-1:32 pm

1 stop5h 32m

Washington, D.C. Dulles Intl

Tue 3/17

12:47 pm-10:25 pm

2 stops11h 38m

$484

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sun 4/19

3:55 pm-11:32 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

Thu 4/23

6:00 am-10:17 am

1 stop6h 17m

$499

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sun 4/19

1:08 pm-11:26 pm

1 stop8h 18m

Washington, D.C. Dulles Intl

Thu 4/23

8:11 pm-11:23 am

2 stops17h 12m

$502

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Rapid City to Washington, D.C. Dulles Intl Airport

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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

6h 08m

Direct flights

None
The fastest flight from Rapid City to Washington, D.C. Dulles Intl Airport takes 6h 08m
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.
Search flight deals

  • 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 6h 08m 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
9,370 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
Colonial Beach
Laurel
Towson
Silver Spring
Gaithersburg
Tysons
Fredericksburg
Rockville
Manassas
Springfield
Fairfax
Bethesda
Sterling

Why use momondo?

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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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