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

Flights via Nadi (NAN) offer the lowest average round-trip price of $650.

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

Flights connecting via Nadi (NAN) have the shortest average one-way travel time: 18h 55m.

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

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

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.

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 56m on average. Another popular route from Washington, D.C. to Sydney is flying from Washington, D.C. to Sydney, which will take roughly 22h 12m. Keep in mind that layovers or delays could extend your travel time.

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

Dallas (DFW) has the shortest average layover time for this route: 1h 50m.

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 51% 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. 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 6 as of July 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.

$572 Cheap Flights from Washington, D.C. to Sydney in 2026

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.

11:05 am - 10:25 pm

IAD

SYD

45h 20m

3 stops

1:15 pm - 7:09 pm

SYD

IAD

43h 54m

3 stops

$1,133Multiple Airlines

Tue, Sep 1 - Mon, Sep 14

11:05 am - 11:50 am

IAD

SYD

34h 45m

3 stops

1:15 pm - 4:07 pm

SYD

IAD

40h 52m

3 stops

$1,134Multiple Airlines

Wed, Aug 19 - Wed, Aug 26

7:00 am - 11:50 am

DCA

SYD

38h 50m

3 stops

1:15 pm - 9:58 pm

SYD

DCA

46h 43m

3 stops

$1,145Multiple Airlines

Wed, Sep 9 - Fri, Sep 18

3:55 pm - 6:55 am

BWI

SYD

25h 00m

1 stop

12:00 pm - 11:41 pm

SYD

BWI

25h 41m

1 stop

$1,155Qantas Airways

Mon, Aug 17 - Mon, Aug 24

3:55 pm - 6:55 am

BWI

SYD

25h 00m

1 stop

12:00 pm - 9:34 pm

SYD

BWI

23h 34m

1 stop

$1,167Qantas Airways

Wed, Aug 19 - Wed, Aug 26

3:46 pm - 6:55 am

BWI

SYD

25h 09m

1 stop

12:00 pm - 11:41 pm

SYD

BWI

25h 41m

1 stop

$1,172Qantas Airways

Mon, Aug 3 - Mon, Aug 24

3:03 pm - 7:00 am

BWI

SYD

25h 57m

2 stops

9:30 am - 4:35 pm

SYD

BWI

21h 05m

1 stop

$1,177United Airlines

Sun, Aug 9 - Wed, Aug 19

7:17 pm - 6:55 am

BWI

SYD

21h 38m

1 stop

12:00 pm - 11:41 pm

SYD

BWI

25h 41m

1 stop

$1,184American Airlines

Sun, Aug 2 - Sun, Aug 16

7:23 pm - 7:00 am

BWI

SYD

21h 37m

1 stop

9:30 am - 4:35 pm

SYD

BWI

21h 05m

1 stop

$1,187United Airlines

Wed, Aug 5 - Mon, Aug 17

4:25 pm - 6:55 am

BWI

SYD

24h 30m

2 stops

12:00 pm - 9:52 pm

SYD

BWI

23h 52m

2 stops

$1,188American Airlines

Wed, Aug 19 - Wed, Aug 26

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United Airlines flights from Washington, D.C. to Sydney

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

United Airlines

Aug 9

BWI6:38 amBaltimore/Washington

34h 17m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 16

SYD10:20 amSydney Kingsford Smith

21h 20m

1 stop

BWI5:40 pmBaltimore/Washington

$1,177

United Airlines

Aug 5

BWI7:23 pmBaltimore/Washington

21h 37m

1 stop

SYD7:00 amSydney Kingsford Smith

Aug 17

SYD9:30 amSydney Kingsford Smith

21h 05m

1 stop

BWI4:35 pmBaltimore/Washington

$1,187

United Airlines

Aug 3

BWI6:59 pmBaltimore/Washington

21h 56m

1 stop

SYD6:55 amSydney Kingsford Smith

Sep 2

SYD9:30 amSydney Kingsford Smith

21h 05m

1 stop

BWI4:35 pmBaltimore/Washington

$1,188

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

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

Qantas Airways

Aug 17

BWI3:55 pmBaltimore/Washington

25h 00m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 24

SYD12:00 pmSydney Kingsford Smith

25h 41m

1 stop

BWI11:41 pmBaltimore/Washington

$1,155

Qantas Airways

Jul 26

BWI7:17 pmBaltimore/Washington

21h 38m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 10

SYD12:00 pmSydney Kingsford Smith

25h 41m

1 stop

BWI11:41 pmBaltimore/Washington

$1,160

Qantas Airways

Aug 19

BWI3:55 pmBaltimore/Washington

25h 00m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 26

SYD12:00 pmSydney Kingsford Smith

23h 34m

1 stop

BWI9:34 pmBaltimore/Washington

$1,167

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 9/1

11:05 am-10:25 pm

3 stops45h 20m

Sydney Kingsford Smith

Mon 9/14

1:15 pm-7:09 pm

3 stops43h 54m

$1,133

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

Wed 8/26

1:15 pm-4:07 pm

3 stops40h 52m

$1,134

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Wed 9/9

7:00 am-11:50 am

3 stops38h 50m

Sydney Kingsford Smith

Fri 9/18

1:15 pm-9:58 pm

3 stops46h 43m

$1,145

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 8/17

3:55 pm-6:55 am

1 stop25h 00m

Sydney Kingsford Smith

Mon 8/24

12:00 pm-11:41 pm

1 stop25h 41m

$1,155

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 8/19

3:55 pm-6:55 am

1 stop25h 00m

Sydney Kingsford Smith

Wed 8/26

12:00 pm-9:34 pm

1 stop23h 34m

$1,167

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 8/3

3:46 pm-6:55 am

1 stop25h 09m

Sydney Kingsford Smith

Mon 8/24

12:00 pm-11:41 pm

1 stop25h 41m

$1,172

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 8/9

3:03 pm-7:00 am

2 stops25h 57m

Sydney Kingsford Smith

Wed 8/19

9:30 am-4:35 pm

1 stop21h 05m

$1,177

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 8/2

7:17 pm-6:55 am

1 stop21h 38m

Sydney Kingsford Smith

Sun 8/16

12:00 pm-11:41 pm

1 stop25h 41m

$1,184

Quickest round-trip

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 8/5

7:23 pm-7:00 am

1 stop21h 37m

Sydney Kingsford Smith

Mon 8/17

9:30 am-4:35 pm

1 stop21h 05m

$1,187

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 8/19

4:25 pm-6:55 am

2 stops24h 30m

Sydney Kingsford Smith

Wed 8/26

12:00 pm-9:52 pm

2 stops23h 52m

$1,188

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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?

Prices are currently low for flights on this route.

Typical prices usually range from $1,138 to $1,658.
The lowest price recently found on this route was $1,133.

What is the cheapest month to fly to Sydney?

In general, November 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 $1,296. If you are unable to visit Sydney during the month of November, then departing from Washington, D.C. during the month February is also very affordable. Most momondo users find prices during this month for around $1,347.

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 $1,623 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 $1,118 on momondo.

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

You could potentially save up to 21% 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 July 2026, prices for Washington, D.C. to Sydney flights are approximately 9% 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 20m
Direct flights	None

The fastest flight from Washington, D.C. to Sydney takes 21h 20m

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

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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 20m 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 6 as of July 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 36% of the total bookings. Other popular airlines include Qantas Airways with 30%, American Airlines with 12%, and Delta with 8%.

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 $282	Free Cancellation	Rating 7.8 8,483 reviews	Search Delta flights
United Airlines	PriceFrom $337	Free Cancellation	Rating 7.4 10,026 reviews	Search United Airlines flights
Qantas Airways	PriceFrom $787	Free Cancellation	Rating 7.5 1,067 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $836	Free Cancellation	Rating 7.1 11,842 reviews	Search American Airlines flights
Air Canada	PriceFrom $841	Free Cancellation	Rating 7.1 11,377 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,285	Free Cancellation	Rating 8.0 654 reviews	Search Air New Zealand flights

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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.

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Cheap flights from Washington, D.C. to Sydney from $572

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 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Washington, D.C. to Sydney

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

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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

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?

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