IAD - RAP

$204 Find Cheap Flights from Washington Dulles Airport to Rapid City - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Rapid City departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$281
Typical prices: $451-$481
Delta
Tue 10/20Tue 11/10
IAD - RAP • 1 stop
Cheapest one-way
$204
Multiple Airlines
Tue 8/25
IAD - RAP • 2 stops
Top airlines
Delta
Cheapest • from $281 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Rapid City. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Minneapolis (MSP)
Cheapest • Avg $452 (round-trip)
Minneapolis (MSP)
Shortest trip • 5h 55m (one-way)
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 100% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Rapid City!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Rapid City (IAD-RAP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Rapid City that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Rapid City

Tue, Oct 20 - Tue, Nov 10
Delta Logo
12:01 pm - 3:58 pm
IAD
-
RAP
5h 57m
1 stop
Delta Logo
4:36 pm - 11:20 pm
RAP
-
IAD
4h 44m
1 stop
$281Delta
Wed, Sep 30 - Wed, Nov 18
Delta Logo
6:10 am - 10:01 am
IAD
-
RAP
5h 51m
1 stop
Delta Logo
11:29 am - 6:17 pm
RAP
-
IAD
4h 48m
1 stop
$281Delta
Wed, Sep 30 - Wed, Nov 18
Delta Logo
6:10 am - 10:01 am
IAD
-
RAP
5h 51m
1 stop
Delta Logo
2:23 pm - 12:39 am
RAP
-
IAD
8h 16m
2 stops
$286Delta
Tue, Oct 20 - Tue, Nov 10
Delta Logo
7:23 am - 1:57 pm
IAD
-
RAP
8h 34m
1 stop
Delta Logo
2:23 pm - 11:21 pm
RAP
-
IAD
6h 58m
2 stops
$286Delta
Wed, Sep 30 - Wed, Nov 18
Delta Logo
6:00 am - 1:50 pm
IAD
-
RAP
9h 50m
2 stops
Delta Logo
11:29 am - 12:39 am
RAP
-
IAD
11h 10m
2 stops
$291Delta
Tue, Oct 20 - Tue, Nov 10
Delta Logo
6:05 am - 1:57 pm
IAD
-
RAP
9h 52m
2 stops
Delta Logo
2:23 pm - 11:21 pm
RAP
-
IAD
6h 58m
2 stops
$291Delta
Wed, Oct 14 - Mon, Oct 19
Delta Logo
7:23 am - 10:45 am
IAD
-
RAP
5h 22m
1 stop
Delta Logo
4:38 pm - 11:26 pm
RAP
-
IAD
4h 48m
1 stop
$310Delta
Wed, Nov 18 - Mon, Nov 23
Delta Logo
7:30 am - 1:43 pm
IAD
-
RAP
8h 13m
1 stop
Delta Logo
11:29 am - 6:17 pm
RAP
-
IAD
4h 48m
1 stop
$310Delta
Wed, Aug 26 - Sat, Aug 29
United Airlines Logo
6:15 am - 10:26 am
IAD
-
RAP
6h 11m
1 stop
United Airlines Logo
8:55 am - 5:53 pm
RAP
-
IAD
6h 58m
1 stop
$355United Airlines
Wed, Nov 4 - Sat, Nov 7
United Airlines Logo
4:10 pm - 10:30 pm
IAD
-
RAP
8h 20m
1 stop
United Airlines Logo
7:00 am - 3:44 pm
RAP
-
IAD
6h 44m
1 stop
$371United Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Rapid City flights

Get data-powered insights and trends into flights from Dulles Intl to Rapid City to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Rapid City?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Rapid City, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Rapid City is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are May and October, where the average cost of round-trip tickets is $846 and $633 respectively.

Find deals

Good to know

Low season

November

Cheapest flight

$204
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Washington Dulles Airport to Rapid City

When to book flights from Dulles Intl to Rapid City

Are your dates flexible? Find out the best times to travel from Dulles Intl to Rapid City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Rapid City flights

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

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Rapid City was $204 for a one-way ticket and $281 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Rapid City?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Washington Dulles Airport to Rapid City?

    On your way to Rapid City, you’ll fly out from Washington, D.C. Dulles Intl. You’ll be landing at Rapid City.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Rapid City?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Rapid City?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Rapid City.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Rapid City?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Rapid City.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Rapid City?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Rapid City from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Rapid City?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Rapid City with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and RAP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Rapid City?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Rapid City from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Dulles Intl to Rapid City

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Rapid City. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Rapid City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10062 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
8.1Crew
6.7Food
Airline reviews

My flight was delayed so bad i missed u it so i just said never mind

2.0 MediocreDanika, Jul 2026
IAD - EWR
Read more United Airlines reviews

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Everything you need to know for your flight from Dulles Intl to Rapid City

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Rapid City (RAP)