Which airport is the most popular layover for flights between Washington, D.C. Dulles Intl Airport and Sydney?

Dallas (DFW) was the most common stop: 62% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Washington, D.C. Dulles Intl Airport to Sydney?

Flights connecting via San Francisco (SFO) have the shortest average one-way travel time: 23h 00m.

Which layover airport has the shortest connection time from Washington, D.C. Dulles Intl Airport to Sydney?

San Francisco (SFO) has the shortest average layover time for this route: 1h 52m.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Sydney Kingsford Smith?

Turkish Airlines is the most popular carrier operating from Washington, D.C. Dulles Intl to Sydney Kingsford Smith

Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to Sydney?

Flights via Toronto (YYZ) offer the lowest average round-trip price of $1,559.

What airlines fly to Sydney?

United Airlines, Air New Zealand and Qantas Airways are the top three most popular airlines that fly to Sydney from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 6 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport are updated daily.

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?

As of June 2026, there are 6 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$490 Cheap Flights from Washington, D.C. Dulles Intl Airport to Sydney in 2026

Q: What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $1,387 to $2,080. The lowest price recently found on this route was $996.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Sydney

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:50 am - 11:50 am

IAD

SYD

36h 00m

3 stops

1:15 pm - 10:16 am

SYD

IAD

35h 01m

3 stops

$996Multiple Airlines

Tue, Aug 4 - Tue, Aug 11

11:05 am - 11:50 am

IAD

SYD

34h 45m

3 stops

1:15 pm - 5:14 pm

SYD

IAD

41h 59m

3 stops

$1,249Multiple Airlines

Wed, Aug 19 - Tue, Aug 25

9:50 am - 7:30 am

IAD

SYD

31h 40m

2 stops

9:10 am - 10:16 am

SYD

IAD

39h 06m

2 stops

$1,314Multiple Airlines

Tue, Aug 4 - Tue, Aug 11

9:50 am - 7:30 am

IAD

SYD

31h 40m

2 stops

9:10 am - 5:14 pm

SYD

IAD

46h 04m

2 stops

$1,320Multiple Airlines

Tue, Aug 4 - Tue, Aug 18

7:00 am - 11:50 am

IAD

SYD

38h 50m

3 stops

1:15 pm - 7:09 pm

SYD

IAD

43h 54m

3 stops

$1,333Multiple Airlines

Sat, Sep 12 - Wed, Sep 30

9:00 am - 8:45 am

IAD

SYD

33h 45m

2 stops

9:55 am - 12:57 am

SYD

IAD

29h 02m

2 stops

$1,337Air New Zealand

Mon, Aug 31 - Mon, Sep 14

1:00 pm - 8:45 am

IAD

SYD

29h 45m

2 stops

11:55 am - 10:45 pm

SYD

IAD

24h 50m

2 stops

$1,347Air New Zealand

Wed, Sep 9 - Wed, Sep 23

10:21 pm - 8:45 am

IAD

SYD

44h 24m

2 stops

11:55 am - 11:55 pm

SYD

IAD

26h 00m

2 stops

$1,352Air New Zealand

Mon, Aug 10 - Mon, Aug 24

12:57 pm - 8:45 am

IAD

SYD

29h 48m

2 stops

7:20 pm - 6:38 am

SYD

IAD

49h 18m

2 stops

$1,356Air New Zealand

Tue, Aug 25 - Tue, Sep 1

10:20 pm - 8:45 am

IAD

SYD

44h 25m

2 stops

11:55 am - 7:00 am

SYD

IAD

33h 05m

2 stops

$1,358Air New Zealand

Sun, Aug 9 - Sun, Aug 23

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Air Canada flights from Washington, D.C. Dulles Intl Airport to Sydney

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets

Air Canada

Aug 5

IAD3:45 pmWashington, D.C. Dulles Intl

25h 35m

2 stops

SYD7:20 amSydney Kingsford Smith

Aug 12

SYD9:20 amSydney Kingsford Smith

23h 41m

2 stops

IAD7:01 pmWashington, D.C. Dulles Intl

$1,477

Air Canada

Jul 3

IAD3:45 pmWashington, D.C. Dulles Intl

25h 35m

2 stops

SYD7:20 amSydney Kingsford Smith

Jul 19

SYD9:20 amSydney Kingsford Smith

23h 41m

2 stops

IAD7:01 pmWashington, D.C. Dulles Intl

$1,515

Air Canada

Jul 3

IAD9:45 amWashington, D.C. Dulles Intl

31h 35m

3 stops

SYD7:20 amSydney Kingsford Smith

Jul 19

SYD9:20 amSydney Kingsford Smith

23h 41m

2 stops

IAD7:01 pmWashington, D.C. Dulles Intl

$1,523

Air New Zealand flights from Washington, D.C. Dulles Intl Airport to Sydney

Our best Air New Zealand deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets

Air New Zealand

Aug 31

IAD9:00 amWashington, D.C. Dulles Intl

33h 45m

2 stops

SYD8:45 amSydney Kingsford Smith

Sep 14

SYD9:55 amSydney Kingsford Smith

29h 02m

2 stops

IAD12:57 amWashington, D.C. Dulles Intl

$1,337

Air New Zealand

Sep 9

IAD1:00 pmWashington, D.C. Dulles Intl

29h 45m

2 stops

SYD8:45 amSydney Kingsford Smith

Sep 23

SYD11:55 amSydney Kingsford Smith

24h 50m

2 stops

IAD10:45 pmWashington, D.C. Dulles Intl

$1,347

Air New Zealand

Aug 10

IAD10:21 pmWashington, D.C. Dulles Intl

44h 24m

2 stops

SYD8:45 amSydney Kingsford Smith

Aug 24

SYD11:55 amSydney Kingsford Smith

26h 00m

2 stops

IAD11:55 pmWashington, D.C. Dulles Intl

$1,352

momondo 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

Cheapest round-trip

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 8/4

9:50 am-11:50 am

3 stops36h 00m

Sydney Kingsford Smith

Tue 8/11

1:15 pm-10:16 am

3 stops35h 01m

$996

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 8/19

11:05 am-11:50 am

3 stops34h 45m

Sydney Kingsford Smith

Tue 8/25

1:15 pm-5:14 pm

3 stops41h 59m

$1,249

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 8/4

9:50 am-7:30 am

2 stops31h 40m

Sydney Kingsford Smith

Tue 8/11

9:10 am-10:16 am

2 stops39h 06m

$1,314

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 8/4

9:50 am-7:30 am

2 stops31h 40m

Sydney Kingsford Smith

Tue 8/18

9:10 am-5:14 pm

2 stops46h 04m

$1,320

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 9/12

7:00 am-11:50 am

3 stops38h 50m

Sydney Kingsford Smith

Wed 9/30

1:15 pm-7:09 pm

3 stops43h 54m

$1,333

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 8/31

9:00 am-8:45 am

2 stops33h 45m

Sydney Kingsford Smith

Mon 9/14

9:55 am-12:57 am

2 stops29h 02m

$1,337

Quickest round-trip

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 9/9

1:00 pm-8:45 am

2 stops29h 45m

Sydney Kingsford Smith

Wed 9/23

11:55 am-10:45 pm

2 stops24h 50m

$1,347

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 8/10

10:21 pm-8:45 am

2 stops44h 24m

Sydney Kingsford Smith

Mon 8/24

11:55 am-11:55 pm

2 stops26h 00m

$1,352

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 8/25

12:57 pm-8:45 am

2 stops29h 48m

Sydney Kingsford Smith

Tue 9/1

7:20 pm-6:38 am

2 stops49h 18m

$1,356

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 8/9

10:20 pm-8:45 am

2 stops44h 25m

Sydney Kingsford Smith

Sun 8/23

11:55 am-7:00 am

2 stops33h 05m

$1,358

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Sydney?

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,040. If you are unable to visit Sydney during the month of November, then departing from Washington, D.C. Dulles Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around $1,417.

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

You are more likely to see cheaper flights to Sydney from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,650 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Washington, D.C. Dulles Intl Airport for as low as $709 on momondo.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Sydney flights?

You could potentially save up to 14% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Sydney flight.

How have Washington, D.C. Dulles Intl Airport to Sydney flight prices changed over time?

When to book flights from Washington, D.C. Dulles Intl Airport to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Sydney (IAD to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Sydney

Fastest flight time	22h 48m
Direct flights	None

The fastest flight from Washington, D.C. Dulles Intl Airport to Sydney takes 22h 48m

There are no direct flights from Washington, D.C. Dulles Intl Airport to Sydney. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Sydney.

Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Sydney

How far is Washington, D.C. Dulles Intl to Sydney Kingsford Smith by plane?
The straight-line distance from Washington, D.C. Dulles Intl to Sydney Kingsford Smith is 9734.0 mi. Typically, this will take 22h 48m by plane in normal conditions.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport are updated daily.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?
As of June 2026, there are 6 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Washington, D.C. Dulles Intl Airport to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to Sydney is United Airlines (51% of total bookings). The next most popular airlines are Air New Zealand (13%), Qantas Airways (12%), and Air Canada (10%).

Best airlines flying from Washington, D.C. Dulles Intl Airport to Sydney

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $377	Free Cancellation	Rating 7.4 9,886 reviews	Search United Airlines flights
Delta	PriceFrom $681	Free Cancellation	Rating 7.8 8,438 reviews	Search Delta flights
Air Canada	PriceFrom $841	Free Cancellation	Rating 7.1 11,254 reviews	Search Air Canada flights
American Airlines	PriceFrom $855	Free Cancellation	Rating 7.1 11,755 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $1,194	Free Cancellation	Rating 7.5 1,050 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $1,285	Free Cancellation	Rating 8.0 646 reviews	Search Air New Zealand flights

Parramatta

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Leura

Lithgow

Manly

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Terrigal

Charlestown

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Sydney?

It is quick and easy to find Washington, D.C. to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

Can I find flights from Washington, D.C. to Sydney with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Sydney from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Sydney?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Sydney.

I’m not ready to book a flight from Washington, D.C. to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

An easier way to manage your Sydney trip

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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $490

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Air Canada flights from Washington, D.C. Dulles Intl Airport to Sydney

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets

Air New Zealand flights from Washington, D.C. Dulles Intl Airport to Sydney

Our best Air New Zealand deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets

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

See travel insights to Sydney from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Sydney

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Sydney?

What is the cheapest month to fly to Sydney?

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

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Sydney flights?

How have Washington, D.C. Dulles Intl Airport to Sydney flight prices changed over time?

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Sydney Kingsford Smith?

What airlines fly to Sydney?

Which airport is the most popular layover for flights between Washington, D.C. Dulles Intl Airport and Sydney?

Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to Sydney?

Which layover airport has the shortest travel time from Washington, D.C. Dulles Intl Airport to Sydney?

Which layover airport has the shortest connection time from Washington, D.C. Dulles Intl Airport to Sydney?

When to book flights from Washington, D.C. Dulles Intl Airport to Sydney

Cheap Washington, D.C. Dulles Intl Airport to Sydney (IAD to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Sydney

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Sydney

Best airlines flying from Washington, D.C. Dulles Intl Airport to Sydney

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

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