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$147+ 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 27/4. 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
20 Apr — 27 Apr1
1 adult
1 adult, Economy, 0 bags

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 21 March 2026. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sat 9/5

08:30-13:39

1 stop8h 09m

Las Vegas Harry Reid Intl

Wed 13/5

13:00-20:43

Nonstop4h 43m

$648

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Thu 9/4

12:47-18:38

1 stop8h 51m

Las Vegas Harry Reid Intl

Sat 18/4

07:10-17:35

1 stop7h 25m

$655

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Mon 4/5

15:25-20:44

1 stop8h 19m

Las Vegas Harry Reid Intl

Thu 7/5

23:40-07:17

Nonstop4h 37m

$695

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 14/4

12:59-15:21

Nonstop5h 22m

Las Vegas Harry Reid Intl

Wed 15/4

18:52-06:37

1 stop8h 45m

$707

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 10/4

05:55-09:35

1 stop6h 40m

Las Vegas Harry Reid Intl

Wed 15/4

11:35-23:40

2 stops9h 05m

$727

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 12/4

12:59-15:21

Nonstop5h 22m

Las Vegas Harry Reid Intl

Wed 15/4

14:37-00:32

1 stop6h 55m

$735
Fastest return journey

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Wed 15/7

20:10-22:19

Nonstop5h 09m

Las Vegas Harry Reid Intl

Wed 22/7

08:48-16:24

Nonstop4h 36m

$770

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Fri 8/5

18:47-16:52

2 stops25h 05m

Las Vegas Harry Reid Intl

Sun 10/5

06:00-00:09

1 stop15h 09m

$774

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Sun 17/5

05:50-12:00

2 stops9h 10m

Las Vegas Harry Reid Intl

Thu 28/5

10:05-00:20

2 stops11h 15m

$784

Washington, D.C.Las Vegas

IAD - LAS

IADLAS

Washington, D.C. Dulles Intl

Tue 28/4

09:00-11:21

Nonstop5h 21m

Las Vegas Harry Reid Intl

Sat 2/5

08:10-15:49

Nonstop4h 39m

$796

Flights are sorted by cheapest return flights first.

Deals found on 19/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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 13 March 2026.

The best time to book flights from Washington, D.C. Dulles Intl Airport is 10 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 $447). Flying from Washington, D.C. Dulles Intl Airport in April will prove the most costly (average of $1,640). 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 $272

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

Washington, D.C. Dulles Intl Airport offers frequent flights to Detroit (310 flights per day), Chicago (300 flights per day) and London (300 flights per day).

New Delhi Indira Gandhi Intl
New Delhi Indira Gandhi Intl
From $620
Albany Intl
Albany Intl
From $490
Minneapolis St Paul
Minneapolis St Paul
From $261
Salt Lake City
Salt Lake City
From $498

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 Minneapolis St Paul, with prices starting at $261. Explore other affordable destinations below.

Minneapolis St Paul
Minneapolis St Paul
From $261
Albany Intl
Albany Intl
From $490
Salt Lake City
Salt Lake City
From $498
New Delhi Indira Gandhi Intl
New Delhi Indira Gandhi Intl
From $620

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
9,455 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,455 reviews
United Airlines
7.4
Good
9,455 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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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 21 March 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 21 March 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 Cairo, 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 $261 to Minneapolis (prices may vary depending on the airline and departure time). On average, users have booked flights for $1,731 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 April. 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 $1,381 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!

See more FAQs

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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