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Cheap flights from Washington, D.C. to Sydney from $539

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 2/2. 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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0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
9:20 am - 6:25 am
SYD
-
IAD
35h 05m1 stop
$999Air Canada
mar., feb. 17 - mar., may. 26
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
9:20 am - 6:25 am
SYD
-
IAD
35h 05m1 stop
$1,000Air Canada
mar., feb. 17 - mar., may. 26
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
9:20 am - 11:16 am
SYD
-
IAD
39h 56m2 stops
$1,003Air Canada
mar., feb. 17 - mar., may. 26
Air Canada Logo
10:06 pm - 9:35 am
IAD
-
SYD
43h 29m2 stops
Air Canada Logo
11:20 am - 11:29 am
SYD
-
IAD
40h 09m2 stops
$1,006Air Canada
sáb., feb. 7 - mar., feb. 17
Multiple Airlines Logo
4:10 pm - 9:35 am
BWI
-
SYD
25h 25m2 stops
Multiple Airlines Logo
11:20 am - 11:25 pm
SYD
-
BWI
28h 05m2 stops
$1,058Multiple Airlines
mar., feb. 3 - sáb., feb. 14
Multiple Airlines Logo
4:10 pm - 9:35 am
BWI
-
SYD
25h 25m2 stops
Multiple Airlines Logo
11:20 am - 11:25 pm
SYD
-
BWI
28h 05m2 stops
$1,079Multiple Airlines
mar., feb. 10 - mar., feb. 17
Qantas Airways Logo
3:41 pm - 1:00 pm
BWI
-
SYD
29h 19m2 stops
Qantas Airways Logo
2:05 pm - 10:57 pm
SYD
-
BWI
24h 52m1 stop
$1,096Qantas Airways
lun., feb. 2 - sáb., feb. 14
Qantas Airways Logo
3:41 pm - 10:25 pm
BWI
-
SYD
38h 44m2 stops
Qantas Airways Logo
2:05 pm - 11:10 pm
SYD
-
BWI
25h 05m1 stop
$1,126Qantas Airways
mié., ene. 21 - mié., ene. 28
American Airlines Logo
2:46 pm - 9:00 am
BWI
-
SYD
26h 14m2 stops
American Airlines Logo
11:20 am - 6:17 pm
SYD
-
BWI
22h 57m2 stops
$1,186American Airlines
dom., feb. 1 - dom., feb. 15
American Airlines Logo
3:41 pm - 6:55 am
BWI
-
SYD
23h 14m1 stop
American Airlines Logo
2:05 pm - 6:17 pm
SYD
-
BWI
20h 12m1 stop
$1,188American Airlines
dom., feb. 1 - dom., feb. 15

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

Our best Air Canada deals on Washington, D.C. to Sydney flight tickets
Air Canada
Feb 17
IAD9:45 amWashington, D.C. Dulles Intl
31h 50m
2 stops
SYD9:35 amSydney Kingsford Smith
May 26
SYD9:20 amSydney Kingsford Smith
35h 05m
1 stop
IAD6:25 amWashington, D.C. Dulles Intl
$999
Find similar
Air Canada
Feb 17
IAD9:45 amWashington, D.C. Dulles Intl
31h 50m
2 stops
SYD9:35 amSydney Kingsford Smith
May 26
SYD9:20 amSydney Kingsford Smith
35h 05m
1 stop
IAD6:25 amWashington, D.C. Dulles Intl
$1,000
Find similar
Air Canada
Feb 17
IAD9:45 amWashington, D.C. Dulles Intl
31h 50m
2 stops
SYD9:35 amSydney Kingsford Smith
May 26
SYD9:20 amSydney Kingsford Smith
39h 56m
2 stops
IAD11:16 amWashington, D.C. Dulles Intl
$1,003
Find similar

Delta flights from Washington, D.C. to Sydney

Our best Delta deals on Washington, D.C. to Sydney flight tickets
Delta
Jan 25
BWI1:02 pmBaltimore/Washington
25h 48m
2 stops
SYD6:50 amSydney Kingsford Smith
Feb 8
SYD10:40 amSydney Kingsford Smith
23h 06m
2 stops
BWI5:46 pmBaltimore/Washington
$1,203
Find similar
Delta
Apr 1
BWI2:38 pmBaltimore/Washington
25h 57m
2 stops
SYD7:35 amSydney Kingsford Smith
Apr 28
SYD9:25 amSydney Kingsford Smith
24h 25m
2 stops
BWI7:50 pmBaltimore/Washington
$1,217
Find similar
Delta
Jan 20
BWI10:33 amBaltimore/Washington
28h 17m
2 stops
SYD6:50 amSydney Kingsford Smith
Jun 9
SYD9:25 amSydney Kingsford Smith
27h 29m
2 stops
BWI10:54 pmBaltimore/Washington
$1,218
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated diciembre 10, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

mar. 2/17

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

mar. 5/26

9:20 am-6:25 am

1 stop35h 05m

$999

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

mar. 2/17

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

mar. 5/26

9:20 am-6:25 am

1 stop35h 05m

$1,000

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

mar. 2/17

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

mar. 5/26

9:20 am-11:16 am

2 stops39h 56m

$1,003

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

sáb. 2/7

10:06 pm-9:35 am

2 stops43h 29m

Sydney Kingsford Smith

mar. 2/17

11:20 am-11:29 am

2 stops40h 09m

$1,006

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

mar. 2/3

4:10 pm-9:35 am

2 stops25h 25m

Sydney Kingsford Smith

sáb. 2/14

11:20 am-11:25 pm

2 stops28h 05m

$1,058

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

mar. 2/10

4:10 pm-9:35 am

2 stops25h 25m

Sydney Kingsford Smith

mar. 2/17

11:20 am-11:25 pm

2 stops28h 05m

$1,079

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

lun. 2/2

3:41 pm-1:00 pm

2 stops29h 19m

Sydney Kingsford Smith

sáb. 2/14

2:05 pm-10:57 pm

1 stop24h 52m

$1,096

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

mié. 1/21

3:41 pm-10:25 pm

2 stops38h 44m

Sydney Kingsford Smith

mié. 1/28

2:05 pm-11:10 pm

1 stop25h 05m

$1,126

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

dom. 2/1

2:46 pm-9:00 am

2 stops26h 14m

Sydney Kingsford Smith

dom. 2/15

11:20 am-6:17 pm

2 stops22h 57m

$1,186

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

dom. 2/1

3:41 pm-6:55 am

1 stop23h 14m

Sydney Kingsford Smith

dom. 2/15

2:05 pm-6:17 pm

1 stop20h 12m

$1,188

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

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

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 $862. If you are unable to visit Sydney during the month of August, then departing from Washington, D.C. during the month April is also very affordable. Most momondo users find prices during this month for around $864.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Washington, D.C. to Sydney is on a Tuesday when prices can be found for as low as $1,353. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,485.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is at noon. momondo users have found flights departing from Washington, D.C. to Sydney at noon for as low as $1,219. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $1,464. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight 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 $1,279 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 $623 on momondo.

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

You could potentially save up to 17% 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 December 2025, prices for Washington, D.C. to Sydney flights are approximately 57% cheaper 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 19m

Direct flights

None
The fastest flight from Washington, D.C. to Sydney takes 21h 19m
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

  • 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 19m 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?

  • 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?

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
DeltaPriceFrom $276Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $346Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $787Free CancellationRating
7.5
947 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $830Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
Air CanadaPriceFrom $854Free CancellationRating
7.1
10,513 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,289Free CancellationRating
8.0
552 reviews
Search Air New Zealand flights
ANAPriceFrom $1,370Free CancellationRating
8.4
1,020 reviews
Search ANA flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Katoomba
Wollongong
Randwick
Coogee
Manly
Penrith
Cronulla
Lithgow
Leura
Charlestown
Terrigal
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.

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