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Cheap flights from Washington, D.C. to Sydney from $428

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 9/8. 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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Find the cheapest flights from Washington, D.C. to Sydney

Cheap round-trip flights

 Logo
6:10 am - 6:55 amIAD-SYD
34h 45m2 stops
 Logo
12:10 pm - 12:19 amSYD-IAD
26h 09m2 stops
Wed, Aug 6 - Sun, Aug 17
 Logo
5:45 am - 12:15 pmBWI-SYD
40h 30m2 stops
 Logo
1:15 pm - 6:54 amSYD-BWI
31h 39m2 stops
Thu, Aug 21 - Thu, Aug 28
Qantas Airways Logo
3:23 pm - 7:25 pmBWI-SYD
36h 02m2 stops
Qantas Airways Logo
2:20 pm - 6:13 pmSYD-BWI
19h 53m1 stop
$1,147Qantas Airways
Find Deal
Thu, Nov 20 - Fri, Nov 28
Qantas Airways Logo
3:23 pm - 7:25 pmBWI-SYD
36h 02m2 stops
Qantas Airways Logo
2:20 pm - 6:13 pmSYD-BWI
19h 53m1 stop
$1,149Qantas Airways
Find Deal
Thu, Nov 6 - Wed, Nov 19
United Airlines Logo
2:54 pm - 7:00 amBWI-SYD
26h 06m2 stops
United Airlines Logo
10:20 am - 5:31 pmSYD-BWI
21h 11m1 stop
$1,156United Airlines
Find Deal
Sun, Aug 31 - Sun, Sep 14
American Airlines Logo
7:20 pm - 6:55 amBWI-SYD
21h 35m1 stop
American Airlines Logo
9:10 am - 5:50 pmSYD-BWI
22h 40m2 stops
$1,158American Airlines
Find Deal
Thu, Aug 7 - Wed, Aug 20
United Airlines Logo
7:00 pm - 6:55 amBWI-SYD
21h 55m1 stop
United Airlines Logo
10:20 am - 5:31 pmSYD-BWI
21h 11m1 stop
$1,161United Airlines
Find Deal
Sun, Aug 31 - Sun, Sep 14
American Airlines Logo
1:38 pm - 6:55 amBWI-SYD
27h 17m1 stop
American Airlines Logo
12:10 pm - 11:22 pmSYD-BWI
25h 12m1 stop
$1,163American Airlines
Find Deal
Fri, Aug 22 - Fri, Sep 5
Delta Logo
1:52 pm - 6:35 amBWI-SYD
26h 43m2 stops
Delta Logo
9:25 am - 9:15 pmSYD-BWI
25h 50m2 stops
$1,172Delta
Find Deal
Tue, Aug 5 - Wed, Sep 10
Delta Logo
2:25 pm - 6:35 amBWI-SYD
26h 10m2 stops
Delta Logo
9:25 am - 8:33 pmSYD-BWI
25h 08m2 stops
$1,186Delta
Find Deal
Sat, Aug 30 - Thu, Sep 11

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

Our best American Airlines deals on Washington, D.C. to Sydney flight tickets
American Airlines
Aug 7
BWI7:20 pmBaltimore/Washington
21h 35m
1 stop
SYD6:55 amSydney Kingsford Smith
Aug 20
SYD9:10 amSydney Kingsford Smith
22h 40m
2 stops
BWI5:50 pmBaltimore/Washington
American Airlines
Aug 22
BWI1:38 pmBaltimore/Washington
27h 17m
1 stop
SYD6:55 amSydney Kingsford Smith
Sep 5
SYD12:10 pmSydney Kingsford Smith
25h 12m
1 stop
BWI11:22 pmBaltimore/Washington
American Airlines
Aug 6
BWI1:38 pmBaltimore/Washington
27h 17m
1 stop
SYD6:55 amSydney Kingsford Smith
Aug 17
SYD12:10 pmSydney Kingsford Smith
24h 54m
1 stop
BWI11:04 pmBaltimore/Washington

Delta flights from Washington, D.C. to Sydney

Our best Delta deals on Washington, D.C. to Sydney flight tickets
Delta
Aug 5
BWI1:52 pmBaltimore/Washington
26h 43m
2 stops
SYD6:35 amSydney Kingsford Smith
Sep 10
SYD9:25 amSydney Kingsford Smith
25h 50m
2 stops
BWI9:15 pmBaltimore/Washington
Delta
Aug 30
BWI2:25 pmBaltimore/Washington
26h 10m
2 stops
SYD6:35 amSydney Kingsford Smith
Sep 11
SYD9:25 amSydney Kingsford Smith
25h 08m
2 stops
BWI8:33 pmBaltimore/Washington
Delta
Jul 12
BWI12:27 pmBaltimore/Washington
28h 08m
2 stops
SYD6:35 amSydney Kingsford Smith
Aug 9
SYD9:25 amSydney Kingsford Smith
34h 21m
2 stops
BWI5:46 amBaltimore/Washington

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, February 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 $916. If you are unable to visit Sydney during the month of February, then departing from Washington, D.C. during the month April is also very affordable. Most momondo users find prices during this month for around $928.

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 $1,295 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 $1,098 on momondo.

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

You could potentially save up to 23% 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 July 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 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

Best Price Found

$428

Fastest flight time

21h 24m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Washington, D.C. in the past 72 hours is $428. The best round-trip flight deal from Washington, D.C. to Sydney found on momondo in the last 72 hours is $958.
The fastest flight from Washington, D.C. to Sydney takes 21h 24m
There are no direct flights from Washington, D.C. to Sydney. Popular non-direct routes for this connection are Washington, D.C. Reagan-National Airport - Sydney Kingsford Smith Airport, Washington, D.C. Dulles Intl Airport - Sydney Kingsford Smith Airport and Baltimore/Washington Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

  • 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 35m 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
United AirlinesPriceFrom $346Free CancellationRating
7.4
8,844 reviews
Search United Airlines flights
American AirlinesPriceFrom $600Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $609Free CancellationRating
8.0
7,962 reviews
Search Delta flights
Qantas AirwaysPriceFrom $815Free CancellationRating
7.5
873 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $1,015Free CancellationRating
7.1
9,680 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,294Free CancellationRating
8.0
494 reviews
Search Air New Zealand flights
ANAPriceFrom $1,370Free CancellationRating
8.4
896 reviews
Search ANA flights

Traveling to a place near Sydney?

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

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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