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

Flights via Atlanta (ATL) offer the lowest average round-trip price of $516.

How long does it take to fly to Sydney?

Flight times from Washington, D.C. to Sydney vary, but if you’re flying out of Baltimore and flying into Sydney (one of the most popular routes), then the duration is 21h 37m on average. Another popular route from Washington, D.C. to Sydney is flying from Washington, D.C. to Sydney, which will take roughly 31h 20m. Keep in mind that layovers or delays could extend your travel time.

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

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 8h 40m.

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

Atlanta (ATL) has the shortest average layover time for this route: 1h 39m.

What airlines fly to Sydney?

United Airlines, Qantas Airways and American Airlines are the top three most popular airlines that fly to Sydney from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 7 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

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

Dallas (DFW) was the most common stop: 42% of momondo users choosing 1-stop flights on this route connected there.

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

Delta, United Airlines, and Turkish Airlines are the most popular carriers operating from Washington, D.C. to Sydney Kingsford Smith

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

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

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

The number of operators available for flights from Washington, D.C. to Sydney Kingsford Smith Airport is 7 as of April 2026.

How old do you have to be to fly from Washington, D.C. to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Sydney Kingsford Smith Airport.

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

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$527 Cheap Flights from Washington, D.C. to Sydney in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $1,708 to $1,235. The lowest price recently found on this route was $1,058.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:07 am - 11:50 am

IAD

SYD

34h 43m

3 stops

1:20 pm - 8:12 am

SYD

IAD

32h 52m

3 stops

$1,058Multiple Airlines

Wed, May 27 - Wed, Jun 3

7:00 am - 11:50 am

DCA

SYD

38h 50m

3 stops

1:20 pm - 9:58 pm

SYD

DCA

46h 38m

3 stops

$1,112Multiple Airlines

Wed, May 27 - Wed, Jun 3

1:59 pm - 6:50 am

BWI

SYD

26h 51m

2 stops

9:15 am - 12:47 am

SYD

BWI

29h 32m

2 stops

$1,314Delta

Sun, May 10 - Tue, May 19

6:35 pm - 7:00 am

BWI

SYD

22h 25m

1 stop

9:30 am - 5:08 pm

SYD

BWI

21h 38m

1 stop

$1,333United Airlines

Sun, May 3 - Sun, May 17

6:35 pm - 7:00 am

BWI

SYD

22h 25m

1 stop

9:30 am - 5:08 pm

SYD

BWI

21h 38m

1 stop

$1,335United Airlines

Sun, May 3 - Sun, May 17

1:59 pm - 6:50 am

BWI

SYD

26h 51m

2 stops

9:15 am - 8:47 pm

SYD

BWI

25h 32m

2 stops

$1,345Delta

Mon, May 25 - Tue, Jun 2

9:45 pm - 7:10 pm

IAD

SYD

31h 25m

2 stops

9:05 pm - 11:35 am

SYD

IAD

52h 30m

2 stops

$1,456Turkish Airlines

Sun, May 3 - Sun, May 17

1:20 pm - 7:10 pm

IAD

SYD

39h 50m

2 stops

9:05 pm - 11:35 am

SYD

IAD

52h 30m

2 stops

$1,484Turkish Airlines

Sun, May 3 - Sun, May 17

6:57 pm - 11:50 am

DCA

SYD

26h 53m

2 stops

1:15 pm - 10:59 pm

SYD

DCA

23h 44m

2 stops

$1,486Fiji Airways

Sat, Aug 22 - Sat, Aug 29

6:57 pm - 11:50 am

DCA

SYD

26h 53m

2 stops

1:15 pm - 11:58 pm

SYD

DCA

24h 43m

2 stops

$1,501Fiji Airways

Tue, Sep 1 - Tue, Sep 15

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Delta flights from Washington, D.C. to Sydney

Our best Delta deals on Washington, D.C. to Sydney flight tickets

Delta

May 10

BWI1:59 pmBaltimore/Washington

26h 51m

2 stops

SYD6:50 amSydney Kingsford Smith

May 19

SYD9:15 amSydney Kingsford Smith

29h 32m

2 stops

BWI12:47 amBaltimore/Washington

$1,314

Delta

May 10

BWI12:00 pmBaltimore/Washington

28h 50m

2 stops

SYD6:50 amSydney Kingsford Smith

May 19

SYD9:15 amSydney Kingsford Smith

29h 32m

2 stops

BWI12:47 amBaltimore/Washington

$1,315

Delta

Jun 1

BWI10:28 amBaltimore/Washington

30h 22m

2 stops

SYD6:50 amSydney Kingsford Smith

Jul 25

SYD9:15 amSydney Kingsford Smith

27h 58m

2 stops

BWI11:13 pmBaltimore/Washington

$1,364

Fiji Airways flights from Washington, D.C. to Sydney

Our best Fiji Airways deals on Washington, D.C. to Sydney flight tickets

Fiji Airways

Aug 22

DCA6:57 pmWashington, D.C. Reagan-National

26h 53m

2 stops

SYD11:50 amSydney Kingsford Smith

Aug 29

SYD1:15 pmSydney Kingsford Smith

23h 44m

2 stops

DCA10:59 pmWashington, D.C. Reagan-National

$1,486

Fiji Airways

Sep 1

DCA6:57 pmWashington, D.C. Reagan-National

26h 53m

2 stops

SYD11:50 amSydney Kingsford Smith

Sep 15

SYD1:15 pmSydney Kingsford Smith

24h 43m

2 stops

DCA11:58 pmWashington, D.C. Reagan-National

$1,501

Fiji Airways

Aug 22

DCA6:57 pmWashington, D.C. Reagan-National

26h 53m

2 stops

SYD11:50 amSydney Kingsford Smith

Aug 29

SYD1:15 pmSydney Kingsford Smith

23h 44m

2 stops

DCA10:59 pmWashington, D.C. Reagan-National

$1,504

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 5/27

11:07 am-11:50 am

3 stops34h 43m

Sydney Kingsford Smith

Wed 6/3

1:20 pm-8:12 am

3 stops32h 52m

$1,058

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Wed 5/27

7:00 am-11:50 am

3 stops38h 50m

Sydney Kingsford Smith

Wed 6/3

1:20 pm-9:58 pm

3 stops46h 38m

$1,112

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 5/10

1:59 pm-6:50 am

2 stops26h 51m

Sydney Kingsford Smith

Tue 5/19

9:15 am-12:47 am

2 stops29h 32m

$1,314

Quickest round-trip

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 5/3

6:35 pm-7:00 am

1 stop22h 25m

Sydney Kingsford Smith

Sun 5/17

9:30 am-5:08 pm

1 stop21h 38m

$1,333

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 5/3

6:35 pm-7:00 am

1 stop22h 25m

Sydney Kingsford Smith

Sun 5/17

9:30 am-5:08 pm

1 stop21h 38m

$1,335

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 5/25

1:59 pm-6:50 am

2 stops26h 51m

Sydney Kingsford Smith

Tue 6/2

9:15 am-8:47 pm

2 stops25h 32m

$1,345

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 5/3

9:45 pm-7:10 pm

2 stops31h 25m

Sydney Kingsford Smith

Sun 5/17

9:05 pm-11:35 am

2 stops52h 30m

$1,456

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 5/3

1:20 pm-7:10 pm

2 stops39h 50m

Sydney Kingsford Smith

Sun 5/17

9:05 pm-11:35 am

2 stops52h 30m

$1,484

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Sat 8/22

6:57 pm-11:50 am

2 stops26h 53m

Sydney Kingsford Smith

Sat 8/29

1:15 pm-10:59 pm

2 stops23h 44m

$1,486

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 9/1

6:57 pm-11:50 am

2 stops26h 53m

Sydney Kingsford Smith

Tue 9/15

1:15 pm-11:58 pm

2 stops24h 43m

$1,501

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. 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

Other information

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

What is the cheapest month to fly to Sydney?

In general, August is the cheapest month to fly from Washington, D.C. to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $78. If you are unable to visit Sydney during the month of August, then departing from Washington, D.C. during the month July is also very affordable. Most momondo users find prices during this month for around $137.

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

You are more likely to see cheaper flights to Sydney from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,636 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. for as low as $758 on momondo.

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

You could potentially save up to 38% on your flight if you consider stops on a Washington, D.C. to Sydney flight.

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

As of April 2026, prices for Washington, D.C. to Sydney flights are approximately 473% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to Sydney (WAS to SYD) flight deals and tips

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

Fastest flight time	21h 37m
Direct flights	None

The fastest flight from Washington, D.C. to Sydney takes 21h 37m

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

Search flight deals

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

How far is Washington, D.C. to Sydney Kingsford Smith by plane?
A flight from Washington, D.C. to Sydney Kingsford Smith will travel around 9755.6 mi. 21h 37m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. to Sydney Kingsford Smith Airport?
Prices for flights from Washington, D.C. to Sydney Kingsford Smith Airport are updated daily.
How many operators does momondo search for flights from Washington, D.C. to Sydney Kingsford Smith Airport?
The number of operators available for flights from Washington, D.C. to Sydney Kingsford Smith Airport is 7 as of April 2026.
How old do you have to be to fly from Washington, D.C. to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Washington, D.C. to Sydney?
Based on momondo bookings for flights between Washington, D.C. and Sydney, the leading airline is United Airlines, making up 32% of the total bookings. Other popular airlines include Qantas Airways with 30%, Delta with 13%, and American Airlines with 12%.

Best airlines flying from Washington, D.C. to Sydney

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 8,466 reviews	Search Delta flights
United Airlines	PriceFrom $377	Free Cancellation	Rating 7.4 9,678 reviews	Search United Airlines flights
Fiji Airways	PriceFrom $719	Free Cancellation	Rating 8.1 240 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $787	Free Cancellation	Rating 7.5 1,028 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $836	Free Cancellation	Rating 7.1 11,683 reviews	Search American Airlines flights
Air Canada	PriceFrom $841	Free Cancellation	Rating 7.1 10,982 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,285	Free Cancellation	Rating 8.0 638 reviews	Search Air New Zealand flights

Parramatta

Bondi Beach

Katoomba

Wollongong

Penrith

Leura

Randwick

Coogee

Lithgow

Manly

Cronulla

Terrigal

Charlestown

Swansea

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Sydney. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Sydney flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Sydney from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Washington, D.C. to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 5/30

Sat 6/6

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia

Nearby airports

Airlines

Cabin classes

Other Australia destinations

Other flights from Washington, D.C.

Complete your trip

Feeling lucky

Cheap flights from Washington, D.C. to Sydney from $545

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Sydney departing on 5/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Delta flights from Washington, D.C. to Sydney

Our best Delta deals on Washington, D.C. to Sydney flight tickets

Fiji Airways flights from Washington, D.C. to Sydney

Our best Fiji Airways deals on Washington, D.C. to Sydney flight tickets

momondo Fare Finder

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

See travel insights to Sydney from

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

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

What is the cheapest month to fly to Sydney?

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

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

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

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

What airlines fly to Sydney?

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

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

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

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

How long does it take to fly to Sydney?

When to book flights from Washington, D.C. to Sydney

Cheap Washington, D.C. to Sydney (WAS to SYD) flight deals and tips

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

Fastest flight time

Direct flights

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

Best airlines flying from Washington, D.C. to Sydney

Compare and see reviews for airlines that fly from Washington, D.C. 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

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales

Fly your favorite airline to Sydney

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Sydney

List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

Popular cities in Australia

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Washington, D.C.

According to popular flight searches on momondo this year

Complete your trip to Sydney

Explore popular destinations other users love

According to popular flight searches on momondo this year