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$133+ Cheap flights from Washington, D.C. Dulles Intl Airport

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
IAD — SYD
3 Feb — 10 Feb1
1 adult
1 adult, Economy, 0 bags

What to know about flights from Dulles Intl

Discover essential information about flights departing from Dulles Intl, including flight schedules, destinations, airlines operating at the Dulles Intl airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 4 January 2026.

Good round-trip deal

$514 or less

Good one-way deal

$70 or less
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl.
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Find flights from Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl
Explore the most affordable flight options available from Dulles Intl. Find the lowest fares based on data from user searches, with prices last updated on 4 January 2026.

Sat 7/215:45IAD - DEN
Nonstop4h 05mSouthwest
Sat 14/216:35DEN - IAD
Nonstop3h 10mSouthwest
Deal found 3/1$264
Tue 24/217:30IAD - DEN
Nonstop4h 05mSouthwest
Thu 26/217:50DEN - IAD
Nonstop3h 20mSouthwest
Deal found 2/1$294
Mon 2/216:11IAD - DEN
Nonstop4h 13mUnited Airlines
Thu 5/207:50DEN - IAD
Nonstop3h 27mUnited Airlines
Deal found 1/1$324
Tue 24/214:17IAD - DEN
1 stop7h 48mDelta
Mon 2/316:43DEN - IAD
1 stop5h 38mDelta
Deal found 2/1$339
Sat 24/106:00IAD - DEN
1 stop6h 08mDelta
Sat 31/116:43DEN - IAD
1 stop5h 41mDelta
Deal found 3/1$354
Sat 24/115:45IAD - DEN
Nonstop4h 05mSouthwest
Wed 28/106:00DEN - IAD
1 stop8h 50mSouthwest
Deal found 2/1$369
Mon 26/119:30IAD - DEN
1 stop6h 58mDelta
Wed 28/106:00DEN - IAD
1 stop6h 45mDelta
Deal found 2/1$384
Mon 26/117:30IAD - DEN
Nonstop4h 05mSouthwest
Tue 3/207:55DEN - IAD
1 stop6h 55mSouthwest
Deal found 2/1$399
Sat 11/407:20IAD - SLC
Nonstop4h 45mDelta
Sat 18/417:50SLC - IAD
Nonstop3h 54mDelta
Deal found 3/1$402
Fri 13/222:25IAD - DEN
Nonstop4h 05mUnited Airlines
Tue 17/207:45DEN - IAD
Nonstop3h 20mUnited Airlines
Deal found 2/1$408
Sat 24/117:44IAD - SLC
Nonstop5h 02mUnited Airlines
Thu 29/107:35SLC - IAD
1 stop8h 54mUnited Airlines
Deal found 3/1$411
Wed 21/106:00IAD - DEN
1 stop6h 08mDelta
Tue 27/116:43DEN - IAD
1 stop5h 41mDelta
Deal found 2/1$414

Find flights from Dulles Intl within your budget

 
Find flights departing from Dulles Intl that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 4 January 2026. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Sydney

Route

Depart

Return

Price

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 31/1

16:11-18:24

Nonstop4h 13m

Denver Intl

Sat 7/2

23:59-05:21

Nonstop3h 22m

$294

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 12/2

05:10-07:10

Nonstop4h 00m

Denver Intl

Sun 15/2

17:25-22:40

Nonstop3h 15m

$324

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 7/2

12:29-17:28

1 stop6h 59m

Denver Intl

Sat 14/2

16:43-00:21

1 stop5h 38m

$324

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Mon 26/1

17:15-19:26

Nonstop4h 11m

Denver Intl

Tue 3/2

07:50-13:17

Nonstop3h 27m

$324

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 5/2

05:30-07:30

Nonstop4h 00m

Denver Intl

Sun 8/2

16:45-21:55

Nonstop3h 10m

$324

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 17/2

19:35-00:23

1 stop6h 48m

Denver Intl

Tue 24/2

15:07-23:09

1 stop6h 02m

$324

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 3/2

06:00-10:08

1 stop6h 08m

Denver Intl

Fri 6/2

16:43-00:24

1 stop5h 41m

$339

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 24/2

09:05-11:15

Nonstop4h 10m

Denver Intl

Thu 26/2

06:50-18:20

1 stop9h 30m

$339

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 24/1

12:38-19:28

1 stop8h 50m

Denver Intl

Sat 31/1

16:43-00:24

1 stop5h 41m

$354

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 17/2

17:10-19:31

Nonstop4h 21m

Denver Intl

Tue 24/2

10:20-15:44

Nonstop3h 24m

$384

Flights are sorted by cheapest return flights first.

Deals found on 2/1

Showing 1-10 of 60 results
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Best time to book a flight from Dulles Intl

Have a flexible travel schedule? Discover the best time to fly from Dulles Intl with our price prediction graph.
Estimated return 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.

Travel insights for flights from Dulles Intl

Get recent, data-driven insights about flights from Dulles Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Sydney. Price data was last updated on 26 December 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport is 80 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport (average of $596). Flying from Washington, D.C. Dulles Intl Airport in January will prove the most costly (average of $1,287). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Washington, D.C. Dulles Intl Airport?

When flying from Washington, D.C. Dulles Intl Airport check dates and pricing for the following: United Airlines. As it departs for the following popular destinations: Sydney.

United Airlines
United Airlines
From $285

What are popular destinations to fly to from Washington, D.C. Dulles Intl Airport?

Washington, D.C. Dulles Intl Airport offers frequent flights to London (260 flights per day), Orlando (238 flights per day) and San Francisco (195 flights per day).

New Delhi Indira Gandhi Intl
New Delhi Indira Gandhi Intl
From $650
Albany Intl
Albany Intl
From $514
San Francisco
San Francisco
From $535
Los Angeles
Los Angeles
From $326

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

The cheapest city to fly to from Washington, D.C. Dulles Intl Airport is Orlando, with prices starting at $70. Explore other affordable destinations below.

Orlando
Orlando
From $70
Los Angeles
Los Angeles
From $326
Albany Intl
Albany Intl
From $514
Salt Lake City
Salt Lake City
From $522

Airline reviews for flights from Dulles Intl

Get insights into the airlines that provide service from 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 airline for your flight from Dulles Intl. In the last 7 days, Cheapflights users made a total of 647,157 searches.
Read reviews from past customers who have flown United Airlines from Washington, D.C. Dulles Intl Airport. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,138 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,138 reviews
United Airlines
7.4
Good
9,138 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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Alternate flight departure points to Dulles Intl

Consider leaving from one of these other departure points that are located a short distance from Dulles Intl. Flight origins were last updated on 4 January 2026.
Flights from Reagan-National

Related info for your journey

Access useful and relevant information related to your journey from Dulles Intl. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 4 January 2026.

  • What are the most popular destinations to fly to from Washington, D.C. Dulles Intl Airport?

    For the current month, the most popular flights from Washington, D.C. Dulles Intl Airport are Ahmedabad, Mumbai, Atlanta. Mumbai, Cairo, Ahmedabad are the most popular locations from Washington, D.C. Dulles Intl Airport year round.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to anywhere?

    Users have flown out of Washington, D.C. Dulles Intl Airport for as low as $70 to Orlando Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for $1,649 to fly from Washington, D.C. Dulles Intl Airport.

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

    Currently, the cheapest month for flights from Washington, D.C. Dulles Intl Airport is August. The most expensive month for flights is January. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • Where are the cheapest places to fly to from Washington, D.C. Dulles Intl Airport?

    View the cheapest flight destinations from Washington, D.C. Dulles Intl Airport:
    Fly from Washington, D.C. to Sydney from $1,339 round trip
    Fly from Washington, D.C. to Melbourne from $1,623 round trip

  • How does Cheapflights help users find flights from Dulles Intl?

    Cheapflights helps you search for flights from Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

  • Why should you use Cheapflights to find cheap flight tickets from Dulles Intl?

    Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dulles Intl for you. Better yet — we are completely free to use.

  • Can Cheapflights find flights from Dulles Intl with no change fees?

    Need flexible booking options for your flight from Dulles Intl ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

  • Can Cheapflights notify me if prices for flights from Dulles Intl become cheaper?

    Yes, Cheapflights has a feature called Price Alerts, which offers users the ability to be notified when flight prices change. Track prices for your flight from Dulles Intl today and book when you’re ready!

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How does Cheapflights help users find flights from Dulles Intl?

Cheapflights helps you search for flights from Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dulles Intl for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Dulles Intl with no change fees?

Need flexible booking options for your flight from Dulles Intl ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alerts, which offers users the ability to be notified when flight prices change. Track prices for your flight from Dulles Intl today and book when you’re ready!

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