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Cheap flights from Washington, D.C. to Sydney from $839

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 14/3. 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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Cheap return flights

Enter your travel dates to find the best prices.
Fiji Airways Logo
19:01 - 22:10DCA-SYD
37h 09m2 stops
Fiji Airways Logo
13:15 - 22:59SYD-DCA
23h 44m2 stops
$1,622Fiji Airways
Find Deal
Tue, 5 May - Tue, 19 May
Fiji Airways Logo
19:01 - 22:10DCA-SYD
37h 09m2 stops
Fiji Airways Logo
13:15 - 22:59SYD-DCA
23h 44m2 stops
$1,657Fiji Airways
Find Deal
Sat, 2 May - Sat, 9 May
Qantas Airways Logo
15:41 - 10:55BWI-SYD
27h 14m2 stops
Qantas Airways Logo
14:05 - 23:10SYD-BWI
25h 05m1 stop
$1,722Qantas Airways
Find Deal
Fri, 30 Jan - Sat, 7 Feb
Qantas Airways Logo
15:22 - 10:55BWI-SYD
27h 33m2 stops
Qantas Airways Logo
14:05 - 14:28SYD-BWI
40h 23m1 stop
$1,734Qantas Airways
Find Deal
Wed, 18 Feb - Wed, 4 Mar
Multiple Airlines Logo
14:00 - 09:00DCA-SYD
27h 00m2 stops
Multiple Airlines Logo
17:45 - 13:06SYD-DCA
35h 21m2 stops
$1,833Multiple Airlines
Find Deal
Thu, 4 Dec - Sun, 14 Dec
Multiple Airlines Logo
09:59 - 07:25DCA-SYD
29h 26m1 stop
Multiple Airlines Logo
17:45 - 13:05SYD-DCA
35h 20m2 stops
$1,869Multiple Airlines
Find Deal
Mon, 2 Feb - Mon, 9 Feb
Delta Logo
14:10 - 07:25BWI-SYD
26h 15m2 stops
Delta Logo
09:25 - 22:54SYD-BWI
27h 29m2 stops
$1,965Delta
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Wed, 11 Mar - Sun, 19 Apr
Delta Logo
13:02 - 08:30BWI-SYD
27h 28m2 stops
Delta Logo
14:15 - 22:04SYD-BWI
23h 49m2 stops
$1,984Delta
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Tue, 27 Jan - Tue, 10 Feb
Air Canada Logo
09:45 - 09:35IAD-SYD
31h 50m2 stops
Air Canada Logo
09:20 - 07:46SYD-IAD
36h 26m2 stops
$2,095Air Canada
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Tue, 17 Feb - Tue, 26 May
Air Canada Logo
09:45 - 09:35IAD-SYD
31h 50m3 stops
Air Canada Logo
10:20 - 20:54SYD-IAD
25h 34m2 stops
$2,106Air Canada
Find Deal
Tue, 24 Feb - Tue, 24 Mar

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

Our best Fiji Airways deals on Washington, D.C. to Sydney flight tickets
Fiji Airways
5 May
DCA19:01Washington, D.C. Reagan-National
37h 09m
2 stops
SYD22:10Sydney Kingsford Smith
19 May
SYD13:15Sydney Kingsford Smith
23h 44m
2 stops
DCA22:59Washington, D.C. Reagan-National
$1,622
Find similar
Fiji Airways
2 May
DCA19:01Washington, D.C. Reagan-National
37h 09m
2 stops
SYD22:10Sydney Kingsford Smith
9 May
SYD13:15Sydney Kingsford Smith
23h 44m
2 stops
DCA22:59Washington, D.C. Reagan-National
$1,657
Find similar
Fiji Airways
14 Mar
DCA18:58Washington, D.C. Reagan-National
26h 37m
2 stops
SYD12:35Sydney Kingsford Smith
18 Apr
SYD13:15Sydney Kingsford Smith
23h 44m
2 stops
DCA22:59Washington, D.C. Reagan-National
$1,663
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
14 Nov
BWI15:23Baltimore/Washington
23h 32m
1 stop
SYD06:55Sydney Kingsford Smith
25 Nov
SYD06:30Sydney Kingsford Smith
27h 47m
2 stops
BWI18:17Baltimore/Washington
$1,689
Find similar
Qantas Airways
17 Nov
BWI15:23Baltimore/Washington
23h 32m
1 stop
SYD06:55Sydney Kingsford Smith
24 Nov
SYD21:55Sydney Kingsford Smith
36h 22m
2 stops
BWI18:17Baltimore/Washington
$1,693
Find similar
Qantas Airways
30 Jan
BWI15:41Baltimore/Washington
27h 14m
2 stops
SYD10:55Sydney Kingsford Smith
7 Feb
SYD14:05Sydney Kingsford Smith
25h 05m
1 stop
BWI23:10Baltimore/Washington
$1,722
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 11 November 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

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 5/5

19:01-22:10

2 stops37h 09m

Sydney Kingsford Smith

Tue 19/5

13:15-22:59

2 stops23h 44m

$1,622

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Sat 2/5

19:01-22:10

2 stops37h 09m

Sydney Kingsford Smith

Sat 9/5

13:15-22:59

2 stops23h 44m

$1,657

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 30/1

15:41-10:55

2 stops27h 14m

Sydney Kingsford Smith

Sat 7/2

14:05-23:10

1 stop25h 05m

$1,722

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 18/2

15:22-10:55

2 stops27h 33m

Sydney Kingsford Smith

Wed 4/3

14:05-14:28

1 stop40h 23m

$1,734

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Thu 4/12

14:00-09:00

2 stops27h 00m

Sydney Kingsford Smith

Sun 14/12

17:45-13:06

2 stops35h 21m

$1,833

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Mon 2/2

09:59-07:25

1 stop29h 26m

Sydney Kingsford Smith

Mon 9/2

17:45-13:05

2 stops35h 20m

$1,869

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 11/3

14:10-07:25

2 stops26h 15m

Sydney Kingsford Smith

Sun 19/4

09:25-22:54

2 stops27h 29m

$1,965

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 27/1

13:02-08:30

2 stops27h 28m

Sydney Kingsford Smith

Tue 10/2

14:15-22:04

2 stops23h 49m

$1,984

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

09:20-07:46

2 stops36h 26m

$2,095

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 24/2

09:45-09:35

3 stops31h 50m

Sydney Kingsford Smith

Tue 24/3

10:20-20:54

2 stops25h 34m

$2,106

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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 $1,320. 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 $1,352.

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 $2,111. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $2,356.

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 $2,138. 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 $2,966 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 $1,902 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 $954 on momondo.

How have Washington, D.C. to Sydney flight prices changed over time?

As of November 2025, prices for Washington, D.C. to Sydney flights are approximately 60% 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

Direct flights

None
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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  • 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 22h 20m.

  • 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 $2,221Free cancellationRating
7.4
9,012 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.

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