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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $639

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
19 Feb — 26 Feb1
1 adult

The best prices from Washington, D.C. Dulles Intl to Sydney Kingsford Smith are usually found in February or April, booked 80 days in advance, depart on a Tuesday or Saturday and return on a Friday

Cheap flight deals from Dulles Intl to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 14 February 2025.

Round-trip from

$1,339

One-way from

$639

Popular in

December

Cheapest in

February

Average price

$1,463
American Airlines
  • American Airlines
  • 25/2-3/3
  • 4 total stops
  • 52h 50m total
  • Washington, D.C. to Sydney
American Airlines
  • American Airlines
  • 10/4
  • 2 total stops
  • 26h 23m total
  • Washington, D.C. to Sydney
Highest demand for flights based on searches. 18% potential increase in price ($768 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($106 potential savings vs. average return price).
Average for round-trip flights in February 2025

Find flight deals from Dulles Intl to Sydney

Cheapest flights from Dulles Intl to Sydney
Explore the most affordable flight options available from Dulles Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 February 2025.

Tue 25/213:48IAD - SYD
2 stops24h 47mAmerican Airlines
Mon 3/311:50SYD - IAD
2 stops28h 03mAmerican Airlines
Deal found 12/2$1,339
Mon 10/317:20IAD - SYD
1 stop22h 15mQantas Airways
Tue 18/311:50SYD - IAD
1 stop19h 30mQantas Airways
Deal found 11/2$1,363
Sun 23/217:13IAD - SYD
2 stops25h 07mMultiple Airlines
Fri 28/311:50SYD - IAD
2 stops36h 00mMultiple Airlines
Deal found 11/2$1,400
Sun 15/613:00IAD - SYD
2 stops27h 35mDelta
Wed 30/709:25SYD - IAD
2 stops23h 23mDelta
Deal found 12/2$1,466
Tue 26/817:10IAD - SYD
2 stops25h 35mAir New Zealand
Wed 3/909:55SYD - IAD
2 stops28h 29mAir New Zealand
Deal found 13/2$1,897
Tue 26/817:30IAD - SYD
1 stop23h 50mAir Canada
Wed 3/909:20SYD - IAD
1 stop20h 59mAir Canada
Deal found 13/2$2,117
Mon 17/322:25IAD - SYD
2 stops53h 40mTurkish Airlines
Fri 21/321:00SYD - IAD
2 stops55h 05mTurkish Airlines
Deal found 11/2$2,258

Find flights from Dulles Intl to Sydney within your budget

Customise your flight search to find flights from Dulles Intl to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 14 February 2025.

Fly from

Dulles Intl

Fly to

Sydney

Route

Depart

Return

Price

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 25/2

13:48-06:35

2 stops24h 47m

Sydney Kingsford Smith

Mon 3/3

11:50-23:53

2 stops28h 03m

$1,339

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 10/3

17:20-06:35

1 stop22h 15m

Sydney Kingsford Smith

Tue 18/3

11:50-16:20

1 stop19h 30m

$1,363

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 23/2

17:13-10:20

2 stops25h 07m

Sydney Kingsford Smith

Fri 28/3

11:50-08:50

2 stops36h 00m

$1,400

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 15/6

13:00-06:35

2 stops27h 35m

Sydney Kingsford Smith

Wed 30/7

09:25-18:48

2 stops23h 23m

$1,466

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 5/5

09:00-08:45

2 stops33h 45m

Sydney Kingsford Smith

Mon 12/5

09:55-01:09

2 stops29h 14m

$1,897

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 1/7

09:10-07:20

2 stops32h 10m

Sydney Kingsford Smith

Tue 15/7

09:20-16:27

1 stop21h 07m

$2,117

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 17/3

22:25-19:05

2 stops53h 40m

Sydney Kingsford Smith

Fri 21/3

21:00-13:05

2 stops55h 05m

$2,258

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 10/4

14:12-06:35

2 stops26h 23m

$639

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 30/3

17:20-06:55

1 stop22h 35m

$647

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 4/5

08:01-11:45

3 stops37h 44m

$852

Flights are sorted by cheapest return flights first.

Deals found on 12/2

Showing 1-10 of 18 results
1
2

Best time to book a flight from Dulles Intl to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney 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 to Sydney

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

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Sydney?

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Sydney. Price data was last updated on 7 February 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Sydney 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 to Sydney?

Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $129). Flying from Washington, D.C. Dulles Intl Airport to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to SYD?

Find hourly flight availability from Dulles Intl to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 February 2025.

When flying from Washington, D.C. Dulles Intl Airport to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 33% versus a flight in the afternoon.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 14 February 2025.
Get a feel of what it's like to fly with ANA, Alaska Airlines and Delta from Washington, D.C. to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

HND - MNL

Great experience! Affordable economy seat with plenty of leg room, foot rest, nice meal, entertainment and excellent flight attendants!

8.4
Very Good

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

HND - MNL

Great experience! Affordable economy seat with plenty of leg room, foot rest, nice meal, entertainment and excellent flight attendants!

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

HND - MNL

Great experience! Affordable economy seat with plenty of leg room, foot rest, nice meal, entertainment and excellent flight attendants!

8.0
Very Good

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

HND - MNL

Great experience! Affordable economy seat with plenty of leg room, foot rest, nice meal, entertainment and excellent flight attendants!

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

HND - MNL

Great experience! Affordable economy seat with plenty of leg room, foot rest, nice meal, entertainment and excellent flight attendants!

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20

10.0
Excellent

Anonymous,Feb 2025

HND - MNL

Great experience! Affordable economy seat with plenty of leg room, foot rest, nice meal, entertainment and excellent flight attendants!

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Sydney from Washington, D.C. Dulles Intl?

    If you book a flight to Sydney from Washington, D.C. Dulles Intl, you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 7.5 km from the centre of Sydney. There are 0 flights from Washington, D.C. Dulles Intl to Kingsford Smith per day from 2 different airlines.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Sydney round-trip?

    Currently priced at $1,339, American Airlines will fly you from Washington, D.C. Dulles Intl Airport to Sydney and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Qantas Airways and Delta - these airlines can fly you to your destination from $1,363 and $1,466, respectively. Users have found that American Airlines is 37% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Sydney one-way?

    The cheapet airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Sydney are American Airlines ($639), Qantas Airways ($647), and Air Canada ($1,225).

  • Can I find deals for flights from Dulles Intl to Sydney that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Sydney.

  • Can I find deals for business class flights from Dulles Intl to Sydney?

    Yes. Cheapflights offers flight deals from Dulles Intl to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $129). Flying from Washington, D.C. Dulles Intl Airport to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Randwick
Manly
Penrith
Coogee
Cronulla
Terrigal
Bondi Beach
Lithgow
Leura
Swansea

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