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 United Airlines. Our recent data shows that you can find tickets from as low as $269 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $274 and $463 round-trip. Users have found that United Airlines is 51% 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 $271. American Airlines flights start at $360 while deals on Delta start at $480 one-way.

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

Currently, July is the cheapest month in which you can book a flight from Rapid City to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Rapid City to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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

Travelers seeking maximum savings on their Rapid City to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

What is the cheapest day to fly round-trip from Rapid City to Washington, D.C. Dulles Intl Airport?

Flights from Rapid City to Washington, D.C. Dulles Intl Airport are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C. Dulles Intl Airport.

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

Our data shows that December tends to be the cheapest month to fly to Washington, D.C. Dulles Intl Airport from Rapid City. Users have commonly found prices around $491 for the month, but tickets can be as low as $269. Due to multiple factors, prepare for potentially higher prices in February.

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

It’s typically best to fly out from Rapid City to Washington, D.C. Dulles Intl Airport at noon. Doing so could potentially save you 21% on the flight price compared to flying in the morning, which is usually more expensive.

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.

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.

$269+ Flights from Rapid City to Washington, D.C. Dulles Intl Airport

Q: How much does it cost to fly round-trip from Rapid City to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment. Rapid City to Washington, D.C. Dulles Intl Airport flights typically cost between $378 and $385 in December. The cheapest round-trip price found within the last 3 days was $269 on United Airlines (Dec 3-Dec 7).

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Cheap flight deals from Rapid City to Dulles Intl

Round-trip from	$269 (United Airlines)
Popular in	September
Cheapest in	January
Average price	$579

From Rapid City to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($26 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($41 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 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 July 29, 2025.

Wed 12/32:55 pmRAP - IAD

1 stop6h 20mUnited Airlines

Sun 12/75:15 pmIAD - RAP

1 stop7h 00mUnited Airlines

Deal found 7/28

$269

Thu 9/112:27 pmRAP - IAD

1 stop7h 11mDelta

Sat 9/1312:35 pmIAD - RAP

2 stops11h 55mDelta

Deal found 7/28

$274

Tue 12/22:20 pmRAP - IAD

2 stops23h 38mAmerican Airlines

Mon 12/811:30 amIAD - RAP

1 stop6h 35mAmerican Airlines

Deal found 7/28

$463

Best flights from Rapid City to Dulles Intl
Discover carefully curated flight deals from Rapid City to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Wed 12/32:55 pmRAP - IAD

1 stop6h 20mUnited Airlines

Sun 12/75:15 pmIAD - RAP

1 stop7h 00mUnited Airlines

Deal found 7/28

$269

Thu 9/112:27 pmRAP - IAD

1 stop7h 11mDelta

Sat 9/1312:35 pmIAD - RAP

2 stops11h 55mDelta

Deal found 7/28

$274

Tue 12/22:20 pmRAP - IAD

2 stops23h 38mAmerican Airlines

Mon 12/811:30 amIAD - RAP

1 stop6h 35mAmerican Airlines

Deal found 7/28

$463

Last-minute flights from Rapid City to Dulles Intl
Discover last-minute flight deals from Rapid City to Dulles Intl. Data last updated July 29, 2025 and is based on user searches.

Thu 8/72:25 pmRAP - IAD

1 stop6h 56mDelta

Tue 8/126:15 amIAD - RAP

1 stop5h 58mDelta

Deal found 7/29

$679

Thu 8/78:47 amRAP - IAD

1 stop13h 58mUnited Airlines

Mon 8/116:30 amIAD - RAP

1 stop7h 06mUnited Airlines

Deal found 7/28

$697

Thu 8/76:12 pmRAP - IAD

2 stops14h 49mAmerican Airlines

Tue 8/1210:25 amIAD - RAP

2 stops12h 33mAmerican Airlines

Deal found 7/29

$758

Wed 8/136:30 amRAP - IAD

1 stop5h 19mUnited Airlines

Sun 8/176:30 amIAD - RAP

1 stop8h 16mUnited Airlines

Deal found 7/29

$319

Wed 8/136:04 pmRAP - IAD

2 stops16h 44mAmerican Airlines

Sun 8/176:34 amIAD - RAP

2 stops11h 37mAmerican Airlines

Deal found 7/28

$552

One-way flights from Rapid City to Dulles Intl
Search for one-way flight options from Rapid City to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Sat 8/164:38 pmRAP - IAD

1 stop6h 07mUnited Airlines

Deal found 7/28

$271

Sat 8/166:12 pmRAP - IAD

2 stops16h 36mAmerican Airlines

Deal found 7/28

$360

Thu 8/72:25 pmRAP - IAD

1 stop6h 56mDelta

Deal found 7/28

$480

Cheapflights Fare Finder

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

Wed 12/3

2:55 pm-11:15 pm

1 stop6h 20m

Washington, D.C. Dulles Intl

Sun 12/7

5:15 pm-10:15 pm

1 stop7h 00m

$269

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Thu 9/11

2:27 pm-11:38 pm

1 stop7h 11m

Washington, D.C. Dulles Intl

Sat 9/13

12:35 pm-10:30 pm

2 stops11h 55m

$274

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Tue 12/2

2:20 pm-3:58 pm

2 stops23h 38m

Washington, D.C. Dulles Intl

Mon 12/8

11:30 am-4:05 pm

1 stop6h 35m

$463

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sat 8/16

4:38 pm-12:45 am

1 stop6h 07m

$271

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Sat 8/16

6:12 pm-12:48 pm

2 stops16h 36m

$360

Rapid CityWashington, D.C.

RAP - IAD

RAPIAD

Rapid City

Thu 8/7

2:25 pm-11:21 pm

1 stop6h 56m

$480

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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

How much does it cost to fly round-trip from Rapid City to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Rapid City to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,979 reviews

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

7,979 reviews

Delta

8.0

Very good

7,979 reviews

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

8,896 reviews

Delta

8.0

Very good

7,979 reviews

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

7,979 reviews

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

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 United Airlines. Our recent data shows that you can find tickets from as low as $269 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $274 and $463 round-trip. Users have found that United Airlines is 51% 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 $271. American Airlines flights start at $360 while deals on Delta start at $480 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, July is the cheapest month in which you can book a flight from Rapid City to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Rapid City to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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Top airline flying from Rapid City to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$348	Average$560	FlexibilityNo cancel fee	On-time69%

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$269+ Cheap flights from Rapid City (RAP) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Rapid City to Dulles Intl with Cheapflights

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2. Select your favorite providers

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Cheap flight deals from Rapid City to Dulles Intl

Round-trip from

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Cheapest in

Average price

Find flight deals from Rapid City to Dulles Intl

Cheapest flights from Rapid City to Dulles IntlExplore 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 July 29, 2025.

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 July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Rapid City to Washington, D.C. Dulles Intl Airport that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Rapid City to Washington, D.C. Dulles Intl Airport

How much does it cost to fly round-trip from Rapid City to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

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?

What are the cheapest airlines flying from Rapid City to Washington, D.C. Dulles Intl Airport round-trip?

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

Can I find deals for flights from Rapid City to Dulles Intl that include hotel bookings?

How can I find direct flights from Rapid City to Dulles Intl?

Can I find deals for business class flights from Rapid City to Dulles Intl?

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Rapid City to Dulles Intl

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Top airline flying from Rapid City to Dulles Intl

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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 July 29, 2025.