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Dulles Intl

Find cheap United Airlines 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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Find United Airlines flight deals to Washington, D.C. Dulles Intl Airport

Cheapest United Airlines flights from USA to Dulles Intl
Explore the most affordable United Airlines flight options available from USA to Dulles Intl. Find the lowest fares with prices last updated on July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/27. 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.
Fri 8/217:00 pm
BOS
-
IAD
1 stop3h 59m
United Airlines
Sat 8/2210:15 pm
IAD
-
BOS
Nonstop1h 44m
United Airlines
Deal found 7/27$168
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Tue 8/182:33 pm
ATL
-
IAD
Nonstop1h 51m
United Airlines
Mon 8/248:19 am
IAD
-
ATL
Nonstop1h 58m
United Airlines
Deal found 7/27$169
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 8/215:45 am
BOS
-
IAD
Nonstop1h 35m
United Airlines
Mon 8/2410:15 pm
IAD
-
BOS
Nonstop1h 44m
United Airlines
Deal found 7/25$170

Flights to Washington, D.C. Dulles Intl Airport with United Airlines at a glance

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

Popular in

June

Cheapest in

January

Average price

$353

Round-trip from

$168

One-way from

$85

Good round-trip deal

$324 or less

Good one-way deal

$164 or less
Highest demand for flights to Washington, D.C. Dulles Intl Airport with United Airlines; 13% potential price increase.
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Best time to find cheap flights to Washington, D.C. Dulles Intl Airport with United Airlines; 1% potential price drop.
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Average price for flights to Washington, D.C. Dulles Intl Airport with United Airlines (round-trip).
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United Airlines
  • United Airlines
  • 9/4-9/7
  • 1 total stop
  • 5h 42m total
  • USA to Washington, D.C.
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United Airlines
  • United Airlines
  • 12/29
  • Nonstop
  • 1h 47m total
  • USA to Washington, D.C.
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Price to beat on a round-trip flight from the United States to Washington, D.C. Dulles Intl Airport with United Airlines.
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Price to beat on a one-way flight from the United States to Washington, D.C. Dulles Intl Airport with United Airlines.
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Cheapflights Insights

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

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

On average, United Airlines 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.

United Airlines weekly flight availability to Washington, D.C. Dulles Intl Airport

The most flights to Washington, D.C. Dulles Intl Airport operated by United Airlines are scheduled on a Sunday (272 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (223 on average).

When is the best time to book a flight to Washington, D.C. Dulles Intl Airport with United Airlines?

The best time to book a flight to Washington, D.C. Dulles Intl Airport with United Airlines is 45 days before departure. On average, fares are higher if you book on the same day as departure.

When is the cheapest time to fly to Washington, D.C. Dulles Intl Airport with United Airlines?

Users looking for the cheapest United Airlines fares to Washington, D.C. Dulles Intl Airport should consider flying on Friday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday at noon, when prices are usually at their highest.

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

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

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

  • Is United Airlines 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 United Airlines that fly to Washington, D.C. Dulles Intl Airport?

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

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

    The average price for a return flight with United Airlines is $421; with a one-way flight around $294.

See more FAQs

Reviews of United Airlines

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United Airlines
7.4
Good
10,000 reviews
Overview

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

Boarding

7.7

Popular United Airlines 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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