Dulles Intl

$69+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — IAD
Jun 23 — Jun 301
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Cheapflights Tip: The best prices from Raleigh-Durham to Washington, D.C. Dulles Intl are usually found in July or May, booked 72 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 June 18, 2025.

Round-trip from

$149
(Frontier)

One-way from

$69
(United Airlines)

Popular in

February

Cheapest in

July

Average price

$275

Good round-trip deal

$541 or less

Good one-way deal

$184 or less
From Raleigh-Durham to Washington, D.C. Dulles Intl
One-way flight from Raleigh-Durham to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 10% potential increase in price ($32 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Raleigh-Durham to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Raleigh-Durham to Washington, D.C. Dulles Intl.

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 June 18, 2025.

This Frontier deal was found by Cheapflights users on 6/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/45:07 pmRDU - IAD
1 stop6h 57mFrontier
Fri 7/116:10 amIAD - RDU
1 stop10h 02mFrontier
Deal found 6/17$149
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/143:10 pmRDU - IAD
Nonstop1h 15mUnited Airlines
Fri 8/158:20 amIAD - RDU
Nonstop1h 08mUnited Airlines
Deal found 6/18$157
This Delta deal was found by Cheapflights users on 6/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/211:08 amRDU - IAD
1 stop5h 25mDelta
Thu 7/106:00 amIAD - RDU
1 stop5h 32mDelta
Deal found 6/17$229
This American Airlines deal was found by Cheapflights users on 6/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/66:00 amRDU - IAD
1 stop3h 53mAmerican Airlines
Wed 8/207:44 amIAD - RDU
1 stop5h 20mAmerican Airlines
Deal found 6/18$251
This Mytrip deal was found by Cheapflights users on 6/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/46:11 pmRDU - IAD
1 stop17h 32mMultiple Airlines
Fri 7/114:46 pmIAD - RDU
2 stops24h 55mMultiple Airlines
Deal found 6/15$287

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 June 18, 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

Fri 7/4

5:07 pm-12:04 am

1 stop6h 57m

Washington, D.C. Dulles Intl

Fri 7/11

6:10 am-4:12 pm

1 stop10h 02m

$149

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Thu 8/14

3:10 pm-4:25 pm

Nonstop1h 15m

Washington, D.C. Dulles Intl

Fri 8/15

8:20 am-9:28 am

Nonstop1h 08m

$157

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Wed 7/2

11:08 am-4:33 pm

1 stop5h 25m

Washington, D.C. Dulles Intl

Thu 7/10

6:00 am-11:32 am

1 stop5h 32m

$229

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Wed 8/6

6:00 am-9:53 am

1 stop3h 53m

Washington, D.C. Dulles Intl

Wed 8/20

7:44 am-1:04 pm

1 stop5h 20m

$251

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Fri 7/4

6:11 pm-11:43 am

1 stop17h 32m

Washington, D.C. Dulles Intl

Fri 7/11

4:46 pm-5:41 pm

2 stops24h 55m

$287

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Mon 8/4

6:00 am-7:13 am

Nonstop1h 13m

$69

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Sat 6/28

4:42 pm-11:16 pm

1 stop6h 34m

$72

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Fri 8/15

5:20 am-9:12 am

1 stop3h 52m

$121

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Mon 12/15

8:41 pm-11:55 pm

1 stop3h 14m

$132

RaleighWashington, D.C.

RDU - IAD

RDUIAD

Raleigh-Durham

Sun 7/27

9:10 am-9:23 am

2 stops24h 13m

$135

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 11 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 June 13, 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, August is the cheapest month in which you can book a flight from Raleigh to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Raleigh to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $347). 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 June 18, 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 41% 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 June 15, 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.

Weekly flight availability from Raleigh to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Raleigh to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 18, 2025.

The most flights from RDU to IAD are scheduled on a Tuesday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

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.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

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).

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 June 18, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Raleigh to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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!
8.0
Very good
8.0
Very good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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 16 daily outbound flights to Washington, D.C. Dulles Intl from 2 different airlines.

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

    According to our current data, Frontier ($149), United Airlines ($157), and Delta ($229) offers the cheapest pricing from Raleigh to Washington, D.C. Dulles Intl Airport. Frontier is 44% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Raleigh to Washington, D.C. Dulles Intl Airport are United Airlines ($69), Frontier ($72), and Delta ($121).

  • 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: Air China (100%), Avianca (97%), ANA( 97%).

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

    On average you can expect to pay $1,128 for a flight from Raleigh to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $113 while the most popular route, (Raleigh-Durham - Washington, D.C. Dulles Intl) is currently priced at $137.

  • 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, August is the cheapest month in which you can book a flight from Raleigh to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Raleigh to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $347). 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 Raleigh?

Book flights to Raleigh if you plan to visit one of these locations
Arlington
Woodbridge
Alexandria
Tysons
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Fredericksburg
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Manassas
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Rockville
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Waldorf
Bowie
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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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$261FlexibilityNo cancel feeOn-time69%
DeltaCheapest$239Average$328FlexibilityNo cancel feeOn-timeN/A

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