How long is the flight from Washington, D.C. Dulles Intl Airport to Sydney?

A quick flight from Washington, D.C. Dulles Intl Airport to Sydney can take about 34h 32m. Alaska Airlines provides one of the quickest options available for as low as $1,211. Washington, D.C. Dulles Intl Airport and Sydney are separated by a distance of 9737 mi.

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

Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Sydney is Delta. Our recent data shows that you can find tickets from as low as $544 on this airline. Additional options worth looking into are American Airlines and Qantas Airways, starting at $830 and $842 round-trip. Users have found that Delta is 58% cheaper than the other options available to this destination.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

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 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Sydney?

American Airlines, Air Canada and Delta are the most popular airlines when flying from Washington, D.C. Dulles Intl Airport to Sydney.

Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to Sydney?

Washington, D.C. Dulles Intl Airport to Sydney flights have a layover in Dallas most often.

Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to Sydney flights?

The least popular layover on flights from Washington, D.C. Dulles Intl Airport to Sydney is Los Angeles.

What are some popular things to do or see while on a layover in Dallas?

American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion are currently the most popular points of interest in Dallas at the moment. American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion are located about 15.0 mi, 15.5 mi, and 18.3 mi, respectively from Dallas/Fort Worth. Travelers in need of a car in Dallas can rent one for about $48 per day.

What airport do you fly into for flights to Sydney from Washington, D.C. Dulles Intl?

Sydney Kingsford Smith (SYD) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Sydney. You should not have trouble finding flights to Kingsford Smith from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 7 airlines have flights to the Sydney airport from Washington, D.C. Dulles Intl. It is only a 4.6 mi journey from Kingsford Smith (SYD) to Sydney’s city center.

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 vacation 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.

$496+ Flights from Washington, D.C. Dulles Intl Airport to Sydney

Q: How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Sydney?

Airfare is below average for this route at the moment. Washington, D.C. Dulles Intl Airport to Sydney flights typically cost between $1,379 and $1,558 in October. The cheapest round-trip price found within the last 3 days was $1,032 on Multiple Airlines (Oct 20-Nov 2).

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: 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 Thursday and return on a Tuesday

Cheap flight deals from Dulles Intl to Sydney

Round-trip from	$1,032 (Trip.com)
One-way from	$496 (Trip.com)
Popular in	December
Cheapest in	February
Average price	$1,557

From Washington, D.C. Dulles Intl to Sydney Kingsford Smith

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One-way flight from Washington, D.C. Dulles Intl to Sydney Kingsford Smith

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Highest demand for flights based on searches. 18% potential increase in price ($306 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($49 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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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 September 17, 2025.

Mon 10/206:15 amIAD - SYD

2 stops34h 50mMultiple Airlines

Sun 11/22:05 pmSYD - IAD

2 stops26h 06mMultiple Airlines

Deal found 9/15

$1,032

Thu 10/306:00 amIAD - SYD

2 stops34h 00mMultiple Airlines

Thu 11/612:10 pmSYD - IAD

2 stops28h 01mMultiple Airlines

Deal found 9/15

$1,037

Mon 10/276:15 amIAD - SYD

2 stops35h 45mMultiple Airlines

Sun 11/92:05 pmSYD - IAD

2 stops26h 06mMultiple Airlines

Deal found 9/15

$1,079

Sun 11/167:43 amIAD - SYD

2 stops33h 17mMultiple Airlines

Wed 11/265:45 pmSYD - IAD

2 stops28h 33mMultiple Airlines

Deal found 9/16

$1,117

Wed 10/296:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Fri 11/149:40 pmSYD - IAD

2 stops24h 43mAlaska Airlines

Deal found 9/15

$1,136

Tue 10/286:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Sun 11/169:40 pmSYD - IAD

2 stops24h 43mAlaska Airlines

Deal found 9/15

$1,155

Wed 10/296:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Sat 11/159:40 pmSYD - IAD

2 stops48h 43mAlaska Airlines

Deal found 9/15

$1,170

Tue 10/286:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Sat 11/159:40 pmSYD - IAD

2 stops48h 43mAlaska Airlines

Deal found 9/15

$1,189

Sun 10/196:25 amIAD - SYD

2 stops46h 20mAlaska Airlines

Sun 10/269:40 pmSYD - IAD

2 stops47h 43mAlaska Airlines

Deal found 9/15

$1,204

Thu 10/306:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Tue 11/49:40 pmSYD - IAD

1 stop35h 00mAlaska Airlines

Deal found 9/15

$1,211

Thu 10/237:41 pmIAD - SYD

2 stops33h 04mAlaska Airlines

Sat 11/89:40 pmSYD - IAD

1 stop24h 43mAlaska Airlines

Deal found 9/16

$1,230

Fri 10/317:43 amIAD - SYD

2 stops45h 02mMultiple Airlines

Fri 11/79:40 pmSYD - IAD

2 stops24h 43mMultiple Airlines

Deal found 9/16

$1,232

Best flights from Dulles Intl to Sydney
Discover carefully curated flight deals from Dulles Intl to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2025.

Thu 10/306:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Tue 11/49:40 pmSYD - IAD

2 stops35h 00mAlaska Airlines

Deal found 9/15

$1,211

Thu 10/3011:41 amIAD - SYD

2 stops34h 19mMultiple Airlines

Thu 11/62:00 pmSYD - IAD

2 stops24h 18mMultiple Airlines

Deal found 9/15

$1,307

Sun 10/197:00 amIAD - SYD

1 stop34h 00mAir New Zealand

Sun 10/269:55 amSYD - IAD

2 stops28h 49mAir New Zealand

Deal found 9/15

$1,515

Mon 12/11:30 pmIAD - SYD

2 stops37h 50mTurkish Airlines

Thu 12/119:15 pmSYD - IAD

2 stops38h 00mTurkish Airlines

Deal found 9/16

$1,519

Fri 11/146:13 pmIAD - SYD

2 stops33h 32mAlaska Airlines

Fri 12/59:40 pmSYD - IAD

3 stops34h 56mAlaska Airlines

Deal found 9/17

$1,287

Wed 10/296:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Thu 11/69:40 pmSYD - IAD

2 stops35h 00mAlaska Airlines

Deal found 9/15

$1,322

Sun 11/21:30 pmIAD - SYD

2 stops37h 50mTurkish Airlines

Wed 11/59:15 pmSYD - IAD

2 stops54h 30mTurkish Airlines

Deal found 9/15

$1,539

Sat 10/115:37 pmIAD - SYD

2 stops28h 08mMultiple Airlines

Sat 10/252:45 pmSYD - IAD

2 stops23h 06mMultiple Airlines

Deal found 9/15

$1,596

Sat 11/110:10 pmIAD - SYD

2 stops54h 10mTurkish Airlines

Fri 11/79:15 pmSYD - IAD

2 stops54h 30mTurkish Airlines

Deal found 9/15

$1,559

Sat 11/110:10 pmIAD - SYD

2 stops54h 10mTurkish Airlines

Tue 11/119:15 pmSYD - IAD

2 stops38h 00mTurkish Airlines

Deal found 9/15

$1,559

Tue 11/259:10 pmIAD - SYD

2 stops54h 10mTurkish Airlines

Sun 12/79:15 pmSYD - IAD

2 stops38h 00mTurkish Airlines

Deal found 9/16

$1,579

Last-minute flights from Dulles Intl to Sydney
Discover last-minute flight deals from Dulles Intl to Sydney. Data last updated September 17, 2025 and is based on user searches.

Sun 10/196:25 amIAD - SYD

2 stops46h 20mAlaska Airlines

Sun 10/269:40 pmSYD - IAD

2 stops47h 43mAlaska Airlines

Deal found 9/15

$1,204

Mon 10/206:15 amIAD - SYD

2 stops34h 50mMultiple Airlines

Sun 11/22:05 pmSYD - IAD

2 stops26h 06mMultiple Airlines

Deal found 9/15

$1,032

Thu 10/237:41 pmIAD - SYD

2 stops33h 04mAlaska Airlines

Sat 11/89:40 pmSYD - IAD

1 stop24h 43mAlaska Airlines

Deal found 9/16

$1,230

Thu 10/237:41 pmIAD - SYD

2 stops33h 04mAlaska Airlines

Tue 10/289:40 pmSYD - IAD

2 stops34h 00mAlaska Airlines

Deal found 9/17

$1,286

Mon 10/276:15 amIAD - SYD

2 stops35h 45mMultiple Airlines

Sun 11/92:05 pmSYD - IAD

2 stops26h 06mMultiple Airlines

Deal found 9/15

$1,079

Tue 10/286:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Sun 11/169:40 pmSYD - IAD

2 stops24h 43mAlaska Airlines

Deal found 9/15

$1,155

Tue 10/286:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Sat 11/159:40 pmSYD - IAD

2 stops48h 43mAlaska Airlines

Deal found 9/15

$1,189

Wed 10/296:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Fri 11/149:40 pmSYD - IAD

2 stops24h 43mAlaska Airlines

Deal found 9/15

$1,136

Wed 10/296:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Sat 11/159:40 pmSYD - IAD

2 stops48h 43mAlaska Airlines

Deal found 9/15

$1,170

Thu 10/306:00 amIAD - SYD

2 stops34h 00mMultiple Airlines

Thu 11/612:10 pmSYD - IAD

2 stops28h 01mMultiple Airlines

Deal found 9/15

$1,037

Thu 10/306:13 pmIAD - SYD

2 stops34h 32mAlaska Airlines

Tue 11/49:40 pmSYD - IAD

2 stops35h 00mAlaska Airlines

Deal found 9/15

$1,211

Fri 10/317:43 amIAD - SYD

2 stops45h 02mMultiple Airlines

Fri 11/79:40 pmSYD - IAD

2 stops24h 43mMultiple Airlines

Deal found 9/16

$1,232

One-way flights from Dulles Intl to Sydney
Search for one-way flight options from Dulles Intl to Sydney. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

Mon 10/276:15 amIAD - SYD

2 stops35h 45mMultiple Airlines

Deal found 9/17

$496

Thu 10/306:00 amIAD - SYD

2 stops36h 00mMultiple Airlines

Deal found 9/15

$552

Mon 11/107:43 amIAD - SYD

2 stops33h 17mMultiple Airlines

Deal found 9/17

$578

Mon 12/87:35 amIAD - SYD

2 stops31h 50mMultiple Airlines

Deal found 9/15

$598

Mon 11/247:38 amIAD - SYD

2 stops31h 47mMultiple Airlines

Deal found 9/15

$600

Mon 10/205:42 pmIAD - SYD

2 stops54h 58mMultiple Airlines

Deal found 9/17

$609

Mon 11/176:13 pmIAD - SYD

2 stops43h 57mMultiple Airlines

Deal found 9/15

$611

Wed 10/226:25 amIAD - SYD

2 stops56h 40mMultiple Airlines

Deal found 9/16

$613

Mon 12/11:30 pmIAD - SYD

2 stops50h 35mMultiple Airlines

Deal found 9/15

$615

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 10/30

6:13 pm-7:45 pm

2 stops34h 32m

Sydney Kingsford Smith

Tue 11/4

9:40 pm-4:40 pm

2 stops35h 00m

$1,211

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 11/14

6:13 pm-7:45 pm

2 stops33h 32m

Sydney Kingsford Smith

Fri 12/5

9:40 pm-4:36 pm

3 stops34h 56m

$1,287

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 10/30

11:41 am-1:00 pm

2 stops34h 19m

Sydney Kingsford Smith

Thu 11/6

2:00 pm-10:18 pm

2 stops24h 18m

$1,307

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 10/29

6:13 pm-7:45 pm

2 stops34h 32m

Sydney Kingsford Smith

Thu 11/6

9:40 pm-4:40 pm

2 stops35h 00m

$1,322

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 10/19

7:00 am-8:00 am

1 stop34h 00m

Sydney Kingsford Smith

Sun 10/26

9:55 am-11:44 pm

2 stops28h 49m

$1,515

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 12/1

1:30 pm-7:20 pm

2 stops37h 50m

Sydney Kingsford Smith

Thu 12/11

9:15 pm-7:15 pm

2 stops38h 00m

$1,519

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 11/2

1:30 pm-7:20 pm

2 stops37h 50m

Sydney Kingsford Smith

Wed 11/5

9:15 pm-11:45 am

2 stops54h 30m

$1,539

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 11/1

10:10 pm-7:20 pm

2 stops54h 10m

Sydney Kingsford Smith

Fri 11/7

9:15 pm-11:45 am

2 stops54h 30m

$1,559

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 11/1

10:10 pm-7:20 pm

2 stops54h 10m

Sydney Kingsford Smith

Tue 11/11

9:15 pm-7:15 pm

2 stops38h 00m

$1,559

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 11/25

9:10 pm-7:20 pm

2 stops54h 10m

Sydney Kingsford Smith

Sun 12/7

9:15 pm-7:15 pm

2 stops38h 00m

$1,579

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 18 results

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 round-trip 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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Sydney

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Sydney, you should look to book at least 80 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $1,032). Flying from Washington, D.C. Dulles Intl Airport to Sydney in December is currently the most expensive (average of $1,627). 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?

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 afternoon, which can drop the price by up to 17% versus a flight in the morning.

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

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Sydney flight should consider departing on Thursday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Sydney?

Reviews of airlines servicing Sydney

Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Sydney, such as Delta, Qantas Airways, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,961 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Qantas Airways

7.5

Good

907 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,926 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air Canada

7.1

Good

10,000 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to Sydney from Washington, D.C. Dulles Intl?
Sydney Kingsford Smith (SYD) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Sydney. You should not have trouble finding flights to Kingsford Smith from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 7 airlines have flights to the Sydney airport from Washington, D.C. Dulles Intl. It is only a 4.6 mi journey from Kingsford Smith (SYD) to Sydney’s city center.
How long is the flight from Washington, D.C. Dulles Intl Airport to Sydney?
A quick flight from Washington, D.C. Dulles Intl Airport to Sydney can take about 34h 32m. Alaska Airlines provides one of the quickest options available for as low as $1,211. Washington, D.C. Dulles Intl Airport and Sydney are separated by a distance of 9737 mi.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Sydney round-trip?
Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Sydney is Delta. Our recent data shows that you can find tickets from as low as $544 on this airline. Additional options worth looking into are American Airlines and Qantas Airways, starting at $830 and $842 round-trip. Users have found that Delta is 58% cheaper than the other options available to this destination.
Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to Sydney?
Washington, D.C. Dulles Intl Airport to Sydney flights have a layover in Dallas most often.
What are some popular things to do or see while on a layover in Dallas?
American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion are currently the most popular points of interest in Dallas at the moment. American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion are located about 15.0 mi, 15.5 mi, and 18.3 mi, respectively from Dallas/Fort Worth. Travelers in need of a car in Dallas can rent one for about $48 per day.
Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to Sydney flights?
The least popular layover on flights from Washington, D.C. Dulles Intl Airport to Sydney is Los Angeles.
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 vacation 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, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $1,032). Flying from Washington, D.C. Dulles Intl Airport to Sydney in December is currently the most expensive (average of $1,627). 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

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Alternative routes for Dulles Intl to Sydney

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Other flights to Sydney

Top 7 airlines flying from Dulles Intl to Sydney

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$544	Average$937	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$830	Average$872	FlexibilityNo cancel fee	On-time71%
Qantas Airways	Cheapest$842	Average$1,175	FlexibilityNo cancel fee	On-time74%
Air Canada	Cheapest$984	Average$1,287	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$999	Average$1,652	FlexibilityNo cancel fee	On-time69%
Air New Zealand	Cheapest$1,289	Average$1,671	FlexibilityNo cancel fee	On-time78%
ANA	Cheapest$1,370	Average$1,587	FlexibilityNo cancel fee	On-time80%

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$496+ Cheap flights from Dulles Intl (IAD) to Sydney (SYD)

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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Sydney with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: 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 Thursday and return on a Tuesday

Cheap flight deals from Dulles Intl to Sydney

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Dulles Intl to Sydney

Cheapest flights from Dulles Intl to SydneyExplore 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 September 17, 2025.

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 September 17, 2025.

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Reviews of airlines servicing Sydney

Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Sydney, such as Delta, Qantas Airways, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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What are some popular things to do or see while on a layover in Dallas?

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Alternative routes for Dulles Intl to Sydney

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Top 7 airlines flying from Dulles Intl to Sydney

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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 September 17, 2025.