Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. to Sydney from $781

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 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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

Cheap return flights

Enter your travel dates to find the best prices.
Air Canada Logo
09:45 - 09:35
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
11:20 - 11:35
SYD
-
IAD
40h 15m2 stops
$1,507Air Canada
Tue, 3 Feb - Tue, 10 Feb
Air Canada Logo
11:05 - 09:35
DCA
-
SYD
30h 30m2 stops
Air Canada Logo
11:20 - 21:58
SYD
-
DCA
26h 38m2 stops
$1,507Air Canada
Sun, 8 Feb - Sun, 15 Feb
Air Canada Logo
09:45 - 09:35
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
11:20 - 20:54
SYD
-
IAD
25h 34m2 stops
$1,508Air Canada
Tue, 27 Jan - Tue, 3 Feb
Air Canada Logo
09:45 - 09:35
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
09:20 - 20:29
SYD
-
IAD
25h 09m2 stops
$1,513Air Canada
Tue, 17 Feb - Tue, 26 May
Multiple Airlines Logo
16:11 - 09:35
DCA
-
SYD
25h 24m2 stops
Multiple Airlines Logo
11:20 - 10:23
SYD
-
DCA
39h 03m3 stops
$1,614Multiple Airlines
Tue, 3 Feb - Tue, 17 Feb
Qantas Airways Logo
15:21 - 14:25
BWI
-
SYD
32h 04m2 stops
Qantas Airways Logo
12:00 - 18:15
SYD
-
BWI
20h 15m1 stop
$1,693Qantas Airways
Mon, 16 Mar - Tue, 7 Apr
Qantas Airways Logo
15:22 - 06:55
BWI
-
SYD
23h 33m1 stop
Qantas Airways Logo
06:05 - 14:26
SYD
-
BWI
24h 21m2 stops
$1,707Qantas Airways
Wed, 18 Feb - Sun, 1 Mar
Multiple Airlines Logo
16:10 - 09:35
BWI
-
SYD
25h 25m2 stops
Multiple Airlines Logo
11:20 - 23:25
SYD
-
BWI
28h 05m2 stops
$1,782Multiple Airlines
Tue, 3 Feb - Sat, 14 Feb
American Airlines Logo
14:46 - 09:00
BWI
-
SYD
26h 14m2 stops
American Airlines Logo
11:20 - 18:17
SYD
-
BWI
22h 57m2 stops
$1,786American Airlines
Sun, 1 Feb - Sun, 15 Feb
American Airlines Logo
15:21 - 06:55
BWI
-
SYD
24h 34m1 stop
American Airlines Logo
13:05 - 22:59
SYD
-
BWI
24h 54m1 stop
$1,800American Airlines
Mon, 16 Mar - Mon, 23 Mar

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

Our best Air Canada deals on Washington, D.C. to Sydney flight tickets
Air Canada
3 Feb
IAD09:45Washington, D.C. Dulles Intl
31h 50m
2 stops
SYD09:35Sydney Kingsford Smith
10 Feb
SYD11:20Sydney Kingsford Smith
40h 15m
2 stops
IAD11:35Washington, D.C. Dulles Intl
$1,507
Find similar
Air Canada
27 Jan
IAD09:45Washington, D.C. Dulles Intl
31h 50m
2 stops
SYD09:35Sydney Kingsford Smith
3 Feb
SYD11:20Sydney Kingsford Smith
25h 34m
2 stops
IAD20:54Washington, D.C. Dulles Intl
$1,508
Find similar
Air Canada
17 Feb
IAD09:45Washington, D.C. Dulles Intl
31h 50m
2 stops
SYD09:35Sydney Kingsford Smith
26 May
SYD09:20Sydney Kingsford Smith
25h 09m
2 stops
IAD20:29Washington, D.C. Dulles Intl
$1,513
Find similar

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

Our best Qantas Airways deals on Washington, D.C. to Sydney flight tickets
Qantas Airways
16 Mar
BWI15:21Baltimore/Washington
28h 34m
2 stops
SYD10:55Sydney Kingsford Smith
23 Mar
SYD13:05Sydney Kingsford Smith
20h 08m
1 stop
BWI18:13Baltimore/Washington
$1,693
Find similar
Qantas Airways
18 Feb
BWI15:22Baltimore/Washington
23h 33m
1 stop
SYD06:55Sydney Kingsford Smith
1 Mar
SYD06:05Sydney Kingsford Smith
24h 21m
2 stops
BWI14:26Baltimore/Washington
$1,707
Find similar
Qantas Airways
20 Feb
DCA16:59Washington, D.C. Reagan-National
24h 01m
1 stop
SYD09:00Sydney Kingsford Smith
2 Mar
SYD14:05Sydney Kingsford Smith
24h 55m
1 stop
DCA23:00Washington, D.C. Reagan-National
$1,779
Find similar

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 14 December 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

Tue 3/2

09:45-09:35

2 stops31h 50m

Sydney Kingsford Smith

Tue 10/2

11:20-11:35

2 stops40h 15m

$1,507

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Sun 8/2

11:05-09:35

2 stops30h 30m

Sydney Kingsford Smith

Sun 15/2

11:20-21:58

2 stops26h 38m

$1,507

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 27/1

09:45-09:35

2 stops31h 50m

Sydney Kingsford Smith

Tue 3/2

11:20-20:54

2 stops25h 34m

$1,508

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 17/2

09:45-09:35

2 stops31h 50m

Sydney Kingsford Smith

Tue 26/5

09:20-20:29

2 stops25h 09m

$1,513

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 3/2

16:11-09:35

2 stops25h 24m

Sydney Kingsford Smith

Tue 17/2

11:20-10:23

3 stops39h 03m

$1,614

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 16/3

15:21-14:25

2 stops32h 04m

Sydney Kingsford Smith

Tue 7/4

12:00-18:15

1 stop20h 15m

$1,693

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 18/2

15:22-06:55

1 stop23h 33m

Sydney Kingsford Smith

Sun 1/3

06:05-14:26

2 stops24h 21m

$1,707

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 3/2

16:10-09:35

2 stops25h 25m

Sydney Kingsford Smith

Sat 14/2

11:20-23:25

2 stops28h 05m

$1,782

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 1/2

14:46-09:00

2 stops26h 14m

Sydney Kingsford Smith

Sun 15/2

11:20-18:17

2 stops22h 57m

$1,786

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 16/3

15:21-06:55

1 stop24h 34m

Sydney Kingsford Smith

Mon 23/3

13:05-22:59

1 stop24h 54m

$1,800

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

The month of August is, on average, the cheapest month to fly to Sydney from Washington, D.C., with most prices found around $1,295. If you aren’t able to travel to Sydney during the month of August, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,298.

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

Our data shows that Tuesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $2,070. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $2,311.

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 in the morning. momondo users have found flights departing from Washington, D.C. to Sydney in the morning for as low as $2,098. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $2,909 on average. Flights to Sydney from Washington, D.C. in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 $1,922 when searching weeks before you fly. 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 $936 on momondo.

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

You could potentially save up to 47% 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 return 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 47m

Direct flights

None
The fastest flight from Washington, D.C. to Sydney takes 21h 47m
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?

    Washington, D.C. and Sydney Kingsford Smith are 15700.1 km apart from one another. By plane, this route typically takes 21h 47m.

  • 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 refresh 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 stopovers. 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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
United AirlinesPriceFrom $2,178Free cancellationRating
7.4
9,092 reviews
Search United Airlines flights

Travelling to a place near Sydney?

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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Sydney for you.

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

Flights from Washington, D.C. to Sydney with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Washington, D.C..

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, organise 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
Tue 13/1
Tue 20/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia