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Dulles Intl

Find cheap Southwest flights to Washington, D.C. Dulles Intl Airport

RDU — IAD
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Flights to Washington, D.C. Dulles Intl Airport with Southwest at a glance

Find detailed information about Southwest flights from USA to Dulles Intl. Explore the options provided by Southwest to plan your journey from USA to Dulles Intl. Data last updated July 27, 2026.

Popular in

June

Cheapest in

September

Average price

$397
Highest demand for flights to Washington, D.C. Dulles Intl Airport with Southwest; 11% potential price increase.
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Best time to find cheap flights to Washington, D.C. Dulles Intl Airport with Southwest; 3% potential price drop.
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Average price for flights to Washington, D.C. Dulles Intl Airport with Southwest (round-trip).
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Cheapflights Insights

Find cheap Southwest flights to Washington, D.C. Dulles Intl Airport

How long is the flight to Washington, D.C. Dulles Intl Airport with Southwest?

On average, Southwest flights from the United States to Washington, D.C. Dulles Intl Airport take 2 hours 46 minutes. Flights to Washington, D.C. Dulles Intl Airport from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

FAQs about flights to Washington, D.C. Dulles Intl Airport with Southwest

  • Which airport do Southwest flights arrive at when travelling to Washington, D.C. Dulles Intl Airport?

    Southwest flights on this route tend to land at Washington, D.C. Dulles Intl Airport.

  • Is Southwest the cheapest airline for a flight to Washington, D.C. Dulles Intl Airport?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Washington, D.C. Dulles Intl Airport tends to be with Avelo Airlines.

  • Are there alternative airlines other than Southwest that fly to Washington, D.C. Dulles Intl Airport?

    United Airlines, Frontier and Delta all fly to Washington, D.C. Dulles Intl Airport and offer an alternative to Southwest.

  • How much is a flight to Washington, D.C. Dulles Intl Airport with Southwest?

    The average price for a return flight with Southwest is $437; with a one-way flight around $272.

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Reviews of Southwest

See what Cheapflights users have to say about their Southwest experience.
Southwest
8.0
Very good
4,229 reviews
Overview

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Boarding

8.1

Popular Southwest flights

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Other airports near Dulles Intl

Other Washington, D.C. travelers fly to these airports near Dulles Intl.
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