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: 39% of momondo users choosing 1-stop flights on this route connected there.

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 55% 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 layover airport has the shortest connection time from Washington, D.C. to Sydney?

Houston (IAH) has the shortest average layover time for this route: 1h 51m.

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 22h 14m. Keep in mind that layovers or delays could extend your travel time.

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 $666.

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 May 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.

$623 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 $1,786 to $1,378. The lowest price recently found on this route was $1,209.

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

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One-way

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11:24 am - 11:50 am

IAD

SYD

34h 26m

3 stops

6:15 am - 8:25 am

SYD

IAD

40h 10m

3 stops

$1,209Multiple Airlines

Tue, Jun 23 - Tue, Jun 30

7:11 pm - 6:55 am

BWI

SYD

21h 44m

1 stop

12:00 pm - 7:19 pm

SYD

BWI

21h 19m

1 stop

$1,251Qantas Airways

Mon, Jun 8 - Tue, Jun 23

10:54 am - 10:10 pm

IAD

SYD

45h 16m

3 stops

1:15 pm - 5:14 pm

SYD

IAD

41h 59m

3 stops

$1,289Multiple Airlines

Sat, Jul 4 - Sun, Jul 19

9:55 am - 9:35 am

IAD

SYD

31h 40m

2 stops

11:20 am - 8:23 pm

SYD

IAD

25h 03m

2 stops

$1,294Air Canada

Wed, Nov 4 - Wed, Nov 18

11:00 am - 9:35 am

DCA

SYD

30h 35m

2 stops

11:20 am - 10:21 am

SYD

DCA

39h 01m

2 stops

$1,294Air Canada

Wed, Nov 4 - Wed, Nov 18

7:17 pm - 6:55 am

BWI

SYD

21h 38m

1 stop

12:00 pm - 7:29 pm

SYD

BWI

21h 29m

1 stop

$1,338American Airlines

Sun, Jul 26 - Sun, Aug 16

7:17 pm - 6:55 am

BWI

SYD

21h 38m

1 stop

12:00 pm - 11:43 pm

SYD

BWI

25h 43m

1 stop

$1,339American Airlines

Sun, Jul 26 - Sun, Aug 16

3:03 pm - 7:00 am

BWI

SYD

25h 57m

2 stops

9:30 am - 4:35 pm

SYD

BWI

21h 05m

1 stop

$1,341United Airlines

Tue, Aug 4 - Sun, Sep 27

9:00 am - 7:00 am

BWI

SYD

32h 00m

1 stop

10:20 am - 5:36 pm

SYD

BWI

22h 16m

1 stop

$1,342United Airlines

Sun, Aug 30 - Wed, Oct 28

11:00 am - 7:20 am

DCA

SYD

30h 20m

1 stop

10:20 am - 9:00 pm

SYD

DCA

25h 40m

2 stops

$1,353EVA Air

Tue, Sep 15 - Sat, Oct 31

Air Canada flights from Washington, D.C. to Sydney

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

Air Canada

Nov 4

IAD9:55 amWashington, D.C. Dulles Intl

31h 40m

2 stops

SYD9:35 amSydney Kingsford Smith

Nov 18

SYD11:20 amSydney Kingsford Smith

25h 03m

2 stops

IAD8:23 pmWashington, D.C. Dulles Intl

$1,294

Air Canada

Oct 3

DCA12:40 pmWashington, D.C. Reagan-National

52h 40m

2 stops

SYD8:20 amSydney Kingsford Smith

Oct 11

SYD10:20 amSydney Kingsford Smith

40h 40m

2 stops

DCA12:00 pmWashington, D.C. Reagan-National

$1,296

Air Canada

Jun 3

IAD12:35 pmWashington, D.C. Dulles Intl

28h 45m

2 stops

SYD7:20 amSydney Kingsford Smith

Jun 16

SYD9:20 amSydney Kingsford Smith

39h 52m

2 stops

IAD11:12 amWashington, D.C. Dulles Intl

$1,299

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

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

American Airlines

Jun 3

BWI2:59 pmBaltimore/Washington

25h 56m

1 stop

SYD6:55 amSydney Kingsford Smith

Jun 10

SYD12:00 pmSydney Kingsford Smith

21h 19m

1 stop

BWI7:19 pmBaltimore/Washington

$1,338

American Airlines

Jul 26

BWI7:17 pmBaltimore/Washington

21h 38m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 16

SYD12:00 pmSydney Kingsford Smith

25h 43m

1 stop

BWI11:43 pmBaltimore/Washington

$1,339

American Airlines

Jul 26

BWI7:17 pmBaltimore/Washington

21h 38m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 16

SYD12:00 pmSydney Kingsford Smith

22h 40m

2 stops

BWI8:40 pmBaltimore/Washington

$1,343

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 6/23

11:24 am-11:50 am

3 stops34h 26m

Sydney Kingsford Smith

Tue 6/30

6:15 am-8:25 am

3 stops40h 10m

$1,209

Quickest round-trip

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 6/8

7:11 pm-6:55 am

1 stop21h 44m

Sydney Kingsford Smith

Tue 6/23

12:00 pm-7:19 pm

1 stop21h 19m

$1,251

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 7/4

10:54 am-10:10 pm

3 stops45h 16m

Sydney Kingsford Smith

Sun 7/19

1:15 pm-5:14 pm

3 stops41h 59m

$1,289

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 11/4

9:55 am-9:35 am

2 stops31h 40m

Sydney Kingsford Smith

Wed 11/18

11:20 am-8:23 pm

2 stops25h 03m

$1,294

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Wed 11/4

11:00 am-9:35 am

2 stops30h 35m

Sydney Kingsford Smith

Wed 11/18

11:20 am-10:21 am

2 stops39h 01m

$1,294

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 7/26

7:17 pm-6:55 am

1 stop21h 38m

Sydney Kingsford Smith

Sun 8/16

12:00 pm-7:29 pm

1 stop21h 29m

$1,338

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 7/26

7:17 pm-6:55 am

1 stop21h 38m

Sydney Kingsford Smith

Sun 8/16

12:00 pm-11:43 pm

1 stop25h 43m

$1,339

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 8/4

3:03 pm-7:00 am

2 stops25h 57m

Sydney Kingsford Smith

Sun 9/27

9:30 am-4:35 pm

1 stop21h 05m

$1,341

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 8/30

9:00 am-7:00 am

1 stop32h 00m

Sydney Kingsford Smith

Wed 10/28

10:20 am-5:36 pm

1 stop22h 16m

$1,342

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 9/15

11:00 am-7:20 am

1 stop30h 20m

Sydney Kingsford Smith

Sat 10/31

10:20 am-9:00 pm

2 stops25h 40m

$1,353

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

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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 $1,639 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 $778 on momondo.

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

You could potentially save up to 45% 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 May 2026, prices for Washington, D.C. to Sydney flights are approximately 95% 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 24m
Direct flights	None

The fastest flight from Washington, D.C. to Sydney takes 21h 24m

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 24m 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 May 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 34% of the total bookings. Other popular airlines include Qantas Airways with 29%, American Airlines with 12%, and Delta 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 8,426 reviews	Search Delta flights
United Airlines	PriceFrom $377	Free Cancellation	Rating 7.4 9,750 reviews	Search United Airlines flights
Fiji Airways	PriceFrom $719	Free Cancellation	Rating 8.1 243 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $787	Free Cancellation	Rating 7.5 1,043 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $836	Free Cancellation	Rating 7.1 11,639 reviews	Search American Airlines flights
Air Canada	PriceFrom $841	Free Cancellation	Rating 7.1 11,092 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,285	Free Cancellation	Rating 8.0 648 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 $623

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 7/27. 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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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

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