$86 Cheap Flights from Raleigh (RDU) to Washington (IAD)

View $86 flight on Sat, Aug 16, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Raleigh to Washington (RDU-IAD)

Prices were available within the past 7 days and start at $86 for one-way flights and $171 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 17 - Sat, Jun 21
RDU
Raleigh
IAD
Washington
$171 Roundtrip, found 13 hours ago
$171
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Sat, May 17 from Raleigh to Washington, returning Sat, Jun 21, priced at $171 found 13 hours ago
Frontier Airlines
Sat, May 3 - Sat, May 31
RDU
Raleigh
IAD
Washington
$172 Roundtrip, found 1 hour ago
$172
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, May 3 from Raleigh to Washington, returning Sat, May 31, priced at $172 found 1 hour ago
United
Fri, May 30 - Sat, May 31
RDU
Raleigh
IAD
Washington
$176 Roundtrip, found 1 day ago
$176
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 30 from Raleigh to Washington, returning Sat, May 31, priced at $176 found 1 day ago
United
Sat, Jun 7 - Sun, Jun 8
RDU
Raleigh
IAD
Washington
$179 Roundtrip, just found
$179
Roundtrip
just found
Select United flight, departing Sat, Jun 7 from Raleigh to Washington, returning Sun, Jun 8, priced at $179 just found
Frontier Airlines
Sun, May 11 - Sat, May 17
RDU
Raleigh
IAD
Washington
$180 Roundtrip, found 1 day ago
$180
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, May 11 from Raleigh to Washington, returning Sat, May 17, priced at $180 found 1 day ago
Frontier Airlines
Fri, May 9 - Sat, May 10
RDU
Raleigh
IAD
Washington
$181 Roundtrip, found 4 hours ago
$181
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Fri, May 9 from Raleigh to Washington, returning Sat, May 10, priced at $181 found 4 hours ago
United
Thu, May 8 - Thu, May 15
RDU
Raleigh
IAD
Washington
$184 Roundtrip, found 2 hours ago
$184
Roundtrip
found 2 hours ago
Select United flight, departing Thu, May 8 from Raleigh to Washington, returning Thu, May 15, priced at $184 found 2 hours ago
United
Fri, May 23 - Mon, May 26
RDU
Raleigh
IAD
Washington
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select United flight, departing Fri, May 23 from Raleigh to Washington, returning Mon, May 26, priced at $189 found 1 hour ago
Delta
Thu, Aug 7 - Sat, Aug 9
RDU
Raleigh
IAD
Washington
$202 Roundtrip, found 5 days ago
$202
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Aug 7 from Raleigh to Washington, returning Sat, Aug 9, priced at $202 found 5 days ago
American Airlines
Tue, May 20 - Wed, May 21
RDU
Raleigh
IAD
Washington
$251 Roundtrip, found 2 hours ago
$251
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Tue, May 20 from Raleigh to Washington, returning Wed, May 21, priced at $251 found 2 hours ago

Frequently asked questions

How much does a flight from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD) cost?
Cheap return flights from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD) start at $150. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United and Spirit Airlines flight leaving RDU on May 14 2025 and touching down at IAD. The price was last updated on April 22 2025 and has not changed since.
What is the cheapest month to fly from RDU to IAD?
The cheapest flights from RDU to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD)?
Fly nonstop from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD) on a United Airlines flight.
What is the cheapest airline that flies from RDU to IAD?
With tickets starting at $90 for a one-way flight from RDU to IAD, United is currently the cheapest airline flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from RDU on June 11 2025. Prices were last updated on April 22 2025 and have not changed since.
How many flights per day from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD)?
When departing from Raleigh - Durham Intl. Airport (RDU), you can choose from an average of 4 daily nonstop flights to Washington Dulles Intl. Airport (IAD).
What are the most popular departure times for flights from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD)?
More passengers fly between RDU and IAD at 6 AM than at any other point in the day. Rather go when it’s quieter? Try choosing a quieter departure window and you could save on your ticket as well.
What day of the week has the most flights from RDU to IAD?
If you travel on a Thursday, you’ll get the widest range of options for flights from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD)?
The earliest flight taking off from Raleigh - Durham Intl. Airport (RDU) is at around 6:10AM UTC-5. Hop on this flight and you’ll reach Washington Dulles Intl. Airport (IAD) at approximately 7:19AM UTC-5. The total flight duration is 1h 9m.
How long does it take to fly from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD)?
It takes approximately 1 hour and 14 minutes to cover the 230 mi from RDU to IAD.
What airline has the least delays from RDU to IAD?
Consider traveling with United Airlines if you’d like to fly straight from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD) without any delays. This airline has the strongest track record for punctuality, with an on-time performance of 81%. Want real-time updates? You can check your flight status using the Expedia App.
What is the best time to fly from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD)?
To reach Washington Dulles Intl. Airport (IAD) without delays, book a flight that leaves Raleigh - Durham Intl. Airport (RDU) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Washington from Raleigh - Durham Intl. Airport (RDU)?
Raleigh - Durham Intl. Airport (RDU) has direct flights to Washington. Here are some of the airports you can fly to without stopovers:

  • Ronald Reagan Washington National Airport (DCA)
  • Washington Dulles Intl. Airport (IAD)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)

Is it cheaper to buy a plane ticket from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute bookings from RDU to IAD are generally more expensive. To lock in the lowest prices, start looking for flights well ahead of time. That said, if you can play around with your travel dates, you may find a cheap fare right before your journey.
Is it cheaper to book a RDU to IAD flight and hotel package?
You can save money by securing a RDU to IAD flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage everything in one place. Once you’ve chosen your ideal flights and accommodations, you can add extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Raleigh - Durham Intl. Airport (RDU) to Washington Dulles Intl. Airport (IAD)?
In most cases, you can modify or cancel your RDU to IAD flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline’s fees and policies on flight changes, or if you want further information, go to our Customer Service portal.
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