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Dulles Intl

$88+ Cheap flights from Raleigh (RDU) to Dulles Intl (IAD)

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — IAD
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Raleigh-Durham to Washington, D.C. Dulles Intl are usually found in May or August, booked 83 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from Raleigh to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Raleigh (RDU) to Dulles Intl (IAD). 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

$158
(Priceline)

One-way from

$88
(Cheapflightsfares)

Popular in

February

Cheapest in

May

Average price

$244

Good round-trip deal

$598 or less

Good one-way deal

$229 or less
From Raleigh-Durham to Washington, D.C. Dulles Intl
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One-way flight from Raleigh-Durham to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 11% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Raleigh-Durham to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Raleigh-Durham to Washington, D.C. Dulles Intl.
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Find flight deals from Raleigh to Dulles Intl

Cheapest flights from Raleigh to Dulles Intl
Explore the most affordable flight options available from Raleigh to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/237:30 amRDU - IAD
1 stop9h 00mFrontier
Sat 8/309:33 pmIAD - RDU
1 stop12h 19mFrontier
Deal found 8/19$158
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:42 pmRDU - IAD
1 stop5h 33mFrontier
Sun 9/147:14 pmIAD - RDU
1 stop14h 39mFrontier
Deal found 8/19$160
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:22 amRDU - IAD
1 stop6h 33mFrontier
Tue 9/99:15 amIAD - RDU
1 stop11h 22mFrontier
Deal found 8/18$163
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/236:45 amRDU - IAD
1 stop13h 10mFrontier
Sun 10/123:10 pmIAD - RDU
1 stop21h 46mFrontier
Deal found 8/17$164
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:38 pmRDU - IAD
1 stop5h 37mFrontier
Thu 9/111:55 pmIAD - RDU
1 stop8h 55mFrontier
Deal found 8/19$165
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:10 amRDU - IAD
1 stop10h 20mFrontier
Wed 9/109:15 amIAD - RDU
1 stop11h 22mFrontier
Deal found 8/18$167
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:22 amRDU - IAD
1 stop6h 33mFrontier
Wed 9/109:15 amIAD - RDU
1 stop11h 22mFrontier
Deal found 8/19$168
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:30 amRDU - IAD
1 stop9h 00mFrontier
Sun 8/315:18 pmIAD - RDU
1 stop6h 07mFrontier
Deal found 8/19$169
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:38 pmRDU - IAD
1 stop18h 17mFrontier
Thu 10/166:15 amIAD - RDU
1 stop12h 05mFrontier
Deal found 8/18$171
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:15 pmRDU - IAD
1 stop4h 56mFrontier
Sun 10/194:40 pmIAD - RDU
1 stop6h 19mFrontier
Deal found 8/19$173
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2710:48 amRDU - IAD
1 stop7h 36mFrontier
Mon 9/296:10 amIAD - RDU
1 stop11h 28mFrontier
Deal found 8/19$175
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2112:21 pmRDU - IAD
1 stop5h 17mFrontier
Mon 8/255:37 pmIAD - RDU
1 stop4h 51mFrontier
Deal found 8/19$176

Cheapflights Fare Finder

 
Customize your flight search to find flights from Raleigh to Dulles Intl 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 Raleigh to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Raleigh

Fly to

Dulles Intl

Route

Depart

Return

Price

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Wed 10/15

12:30 pm-7:46 pm

1 stop7h 16m

Washington, D.C. Dulles Intl

Tue 10/21

9:00 am-3:37 pm

1 stop6h 37m

$158

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Tue 10/7

12:30 pm-7:46 pm

1 stop7h 16m

Washington, D.C. Dulles Intl

Wed 10/15

9:00 am-3:37 pm

1 stop6h 37m

$158

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Fri 10/24

7:15 pm-12:11 am

1 stop4h 56m

Washington, D.C. Dulles Intl

Mon 10/27

4:45 pm-10:59 pm

1 stop6h 14m

$160

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Sat 9/6

10:48 am-6:24 pm

1 stop7h 36m

Washington, D.C. Dulles Intl

Thu 9/11

1:55 pm-10:50 pm

1 stop8h 55m

$160

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Thu 10/9

10:50 pm-6:45 pm

1 stop19h 55m

Washington, D.C. Dulles Intl

Sun 10/12

6:15 am-6:20 pm

1 stop12h 05m

$160

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Wed 9/10

6:45 am-7:55 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

Thu 9/11

7:14 pm-9:53 am

1 stop14h 39m

$160

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Sat 9/13

10:48 am-6:24 pm

1 stop7h 36m

Washington, D.C. Dulles Intl

Sun 9/14

10:09 pm-5:11 pm

1 stop19h 02m

$160

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Wed 9/10

6:45 am-7:55 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

Fri 9/12

7:14 pm-9:53 am

1 stop14h 39m

$160

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Fri 10/24

7:15 pm-12:11 am

1 stop4h 56m

Washington, D.C. Dulles Intl

Sun 10/26

8:02 pm-9:35 am

1 stop13h 33m

$160

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Thu 9/4

6:22 am-12:55 pm

1 stop6h 33m

Washington, D.C. Dulles Intl

Thu 9/4

9:09 pm-5:11 pm

1 stop20h 02m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 21 results
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The best insider tips for Raleigh to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Raleigh to Washington, D.C. Dulles Intl Airport trip
Airports
RDU

RDU offers free Wi-Fi throughout the terminals. Connect to the 'RDU Free WiFi' network for seamless browsing before your flight.

Read more about RDUby John Walton
IAD

The Washington Metro Silver line reaches IAD in under 40 minutes, offering a cost-effective way to reach the city.

Read more about IADby Ramsey Qubein
Our travel experts
John Walton

John Walton

Expert on RDU

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Raleigh to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Raleigh 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 Raleigh to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Raleigh to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Raleigh to Dulles Intl. Price data was last updated on August 8, 2025.

Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from Raleigh to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, July is the cheapest month in which you can book a flight from Raleigh to Washington, D.C. Dulles Intl Airport (average of $303). Flying from Raleigh 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 time of day to fly from RDU to IAD?

Find hourly flight availability from Raleigh to Dulles Intl. 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.

It’s optimal to fly from Raleigh to Washington, D.C. Dulles Intl Airport in the morning. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Raleigh to Dulles Intl. Price data was last updated on August 17, 2025.

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

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated August 20, 2025.
See what other customers who have flown with Delta and United Airlines from Raleigh to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

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
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

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
8,928 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

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

Find useful and relevant information for your journey from Raleigh 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 Raleigh to Washington, D.C. Dulles Intl?

    Located just 11.1 mi from the city center, Raleigh-Durham is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Raleigh. Booking flights from Raleigh-Durham (RDU) to Washington, D.C. Dulles Intl should be relatively easy as there are 17 daily outbound flights to Washington, D.C. Dulles Intl from 2 different airlines.

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

    There are many flights that can get you from Raleigh to Washington, D.C. Dulles Intl Airport in 7h 16m. Fly via Frontier to get the fastest option. Raleigh and Washington, D.C. Dulles Intl Airport are separated by a distance of 224 mi.

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

    According to our current data, United Airlines ($179), and Delta ($239) offers the cheapest pricing from Raleigh to Washington, D.C. Dulles Intl Airport. United Airlines is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Raleigh to Washington, D.C. Dulles Intl Airport?

    Before booking your flight to Washington, D.C. Dulles Intl Airport from Raleigh, check out the most reliable airlines to get you to your destination on time: Sun Country Air (100%), Air China (94%), GoJet( 88%).

  • What are the cheapest flights from Raleigh to Washington, D.C. Dulles Intl Airport?

    On average you can expect to pay $1,023 for a flight from Raleigh to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $108 while the most popular route, (Raleigh-Durham - Washington, D.C. Dulles Intl) is currently priced at $179.

  • Can I find deals for flights from Raleigh to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Raleigh to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Raleigh to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Raleigh to Dulles Intl.

  • Can I find deals for business class flights from Raleigh to Dulles Intl?

    Yes. Cheapflights offers flight deals from Raleigh 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 Raleigh to Washington, D.C. Dulles Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Raleigh to Washington, D.C. Dulles Intl Airport (average of $303). Flying from Raleigh 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.

See more FAQs

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

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Alternative routes for Raleigh to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Raleigh to Dulles Intl

Discover the top 2 airlines that operate flights from Raleigh to Dulles Intl. 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$179Average$260FlexibilityNo cancel feeOn-time69%
DeltaCheapest$239Average$328FlexibilityNo cancel feeOn-timeN/A

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