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

United Airlines, Air New Zealand, and Alaska Airlines are the most popular carriers operating from Washington, D.C. to Sydney Kingsford Smith

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.

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 23h 30m. 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.

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.

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.

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.

$639 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 $1,529 to $1,102. The lowest price recently found on this route was $1,160.

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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.

6:59 pm - 6:55 am

BWI

SYD

21h 56m

1 stop

9:30 am - 4:35 pm

SYD

BWI

21h 05m

1 stop

$1,160Air New Zealand

Sun, Jul 26 - Sun, Aug 23

3:03 pm - 7:00 am

BWI

SYD

25h 57m

2 stops

9:30 am - 4:35 pm

SYD

BWI

21h 05m

1 stop

$1,161United Airlines

Sun, Jul 26 - Sun, Aug 23

8:30 am - 6:55 am

BWI

SYD

32h 25m

2 stops

9:30 am - 11:30 pm

SYD

BWI

28h 00m

2 stops

$1,165Air New Zealand

Tue, Jun 2 - Tue, Jun 9

7:23 pm - 7:00 am

BWI

SYD

21h 37m

1 stop

9:30 am - 10:56 pm

SYD

BWI

27h 26m

2 stops

$1,166United Airlines

Wed, Jul 22 - Sun, Aug 16

6:38 am - 6:55 am

BWI

SYD

34h 17m

1 stop

10:20 am - 5:57 pm

SYD

BWI

21h 37m

1 stop

$1,171Air New Zealand

Tue, Jun 2 - Tue, Jun 9

7:00 am - 7:00 am

BWI

SYD

34h 00m

1 stop

10:20 am - 5:40 pm

SYD

BWI

21h 20m

1 stop

$1,172United Airlines

Tue, Jul 21 - Wed, Aug 19

2:30 pm - 7:50 pm

IAD

SYD

37h 20m

2 stops

9:45 pm - 7:15 pm

SYD

IAD

37h 30m

2 stops

$1,441Turkish Airlines

Wed, Nov 4 - Thu, Dec 10

2:30 pm - 7:50 pm

IAD

SYD

37h 20m

2 stops

9:45 pm - 11:45 am

SYD

IAD

54h 00m

2 stops

$1,444Turkish Airlines

Wed, Nov 4 - Thu, Nov 19

9:55 am - 7:20 am

IAD

SYD

31h 25m

2 stops

9:20 am - 8:24 pm

SYD

IAD

25h 04m

2 stops

$1,460Air Canada

Tue, Jun 30 - Tue, Jul 7

3:45 pm - 7:20 am

IAD

SYD

25h 35m

2 stops

9:20 am - 8:24 pm

SYD

IAD

25h 04m

2 stops

$1,465Air Canada

Tue, Jul 28 - Tue, Aug 11

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

$1,487

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

$1,508

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

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

Air New Zealand

Jul 26

BWI6:59 pmBaltimore/Washington

21h 56m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 23

SYD9:30 amSydney Kingsford Smith

21h 05m

1 stop

BWI4:35 pmBaltimore/Washington

$1,160

Air New Zealand

Jun 2

BWI8:30 amBaltimore/Washington

32h 25m

2 stops

SYD6:55 amSydney Kingsford Smith

Jun 9

SYD9:30 amSydney Kingsford Smith

28h 00m

2 stops

BWI11:30 pmBaltimore/Washington

$1,165

Air New Zealand

Jun 2

BWI6:38 amBaltimore/Washington

34h 17m

1 stop

SYD6:55 amSydney Kingsford Smith

Jun 9

SYD10:20 amSydney Kingsford Smith

21h 37m

1 stop

BWI5:57 pmBaltimore/Washington

$1,171

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 7/26

6:59 pm-6:55 am

1 stop21h 56m

Sydney Kingsford Smith

Sun 8/23

9:30 am-4:35 pm

1 stop21h 05m

$1,160

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 7/26

3:03 pm-7:00 am

2 stops25h 57m

Sydney Kingsford Smith

Sun 8/23

9:30 am-4:35 pm

1 stop21h 05m

$1,161

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 6/2

8:30 am-6:55 am

2 stops32h 25m

Sydney Kingsford Smith

Tue 6/9

9:30 am-11:30 pm

2 stops28h 00m

$1,165

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 7/22

7:23 pm-7:00 am

1 stop21h 37m

Sydney Kingsford Smith

Sun 8/16

9:30 am-10:56 pm

2 stops27h 26m

$1,166

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 6/2

6:38 am-6:55 am

1 stop34h 17m

Sydney Kingsford Smith

Tue 6/9

10:20 am-5:57 pm

1 stop21h 37m

$1,171

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 7/21

7:00 am-7:00 am

1 stop34h 00m

Sydney Kingsford Smith

Wed 8/19

10:20 am-5:40 pm

1 stop21h 20m

$1,172

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 11/4

2:30 pm-7:50 pm

2 stops37h 20m

Sydney Kingsford Smith

Thu 12/10

9:45 pm-7:15 pm

2 stops37h 30m

$1,441

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 11/4

2:30 pm-7:50 pm

2 stops37h 20m

Sydney Kingsford Smith

Thu 11/19

9:45 pm-11:45 am

2 stops54h 00m

$1,444

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 6/30

9:55 am-7:20 am

2 stops31h 25m

Sydney Kingsford Smith

Tue 7/7

9:20 am-8:24 pm

2 stops25h 04m

$1,460

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 7/28

3:45 pm-7:20 am

2 stops25h 35m

Sydney Kingsford Smith

Tue 8/11

9:20 am-8:24 pm

2 stops25h 04m

$1,465

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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

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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 $1,622 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 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 132% 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 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 33% of the total bookings. Other popular airlines include Qantas Airways with 29%, American Airlines with 13%, 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 8,454 reviews	Search Delta flights
United Airlines	PriceFrom $377	Free Cancellation	Rating 7.4 9,729 reviews	Search United Airlines flights
Fiji Airways	PriceFrom $719	Free Cancellation	Rating 8.1 241 reviews	Search Fiji Airways flights
Qantas Airways	PriceFrom $787	Free Cancellation	Rating 7.5 1,037 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $836	Free Cancellation	Rating 7.1 11,662 reviews	Search American Airlines flights
Air Canada	PriceFrom $841	Free Cancellation	Rating 7.1 11,047 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,285	Free Cancellation	Rating 8.0 645 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 $639

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 10/21. 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

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Why use momondo?

An easier way to manage your Sydney trip

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