Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. to Sydney from $737

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 24/4. 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.

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

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Washington, D.C. to Sydney.
Air Canada Logo
09:45 - 07:20IAD-SYD
31h 35m2 stops
Air Canada Logo
09:20 - 11:14SYD-IAD
39h 54m2 stops
$1,657Air Canada
Find Deal
Tue, 6 May - Tue, 20 May
Air Canada Logo
09:45 - 07:20IAD-SYD
31h 35m3 stops
Air Canada Logo
09:20 - 11:14SYD-IAD
39h 54m2 stops
$1,666Air Canada
Find Deal
Tue, 6 May - Tue, 20 May
 Logo
11:12 - 12:15BWI-SYD
35h 03m2 stops
 Logo
13:45 - 05:46SYD-BWI
30h 01m3 stops
$1,676
Find Deal
Thu, 17 Apr - Sat, 3 May
 Logo
11:12 - 12:15BWI-SYD
35h 03m2 stops
 Logo
13:45 - 05:46SYD-BWI
30h 01m3 stops
$1,690
Find Deal
Thu, 24 Apr - Sat, 3 May
Fiji Airways Logo
19:07 - 11:45DCA-SYD
26h 38m2 stops
Fiji Airways Logo
13:45 - 23:04SYD-DCA
23h 19m2 stops
$1,941Fiji Airways
Find Deal
Sat, 17 May - Sat, 24 May
Alaska Airlines Logo
18:35 - 19:45DCA-SYD
35h 10m2 stops
Alaska Airlines Logo
21:40 - 16:44SYD-DCA
33h 04m2 stops
$2,040Alaska Airlines
Find Deal
Wed, 14 May - Thu, 29 May
Alaska Airlines Logo
19:59 - 18:30IAD-SYD
32h 31m2 stops
Alaska Airlines Logo
21:40 - 16:14SYD-IAD
32h 34m2 stops
$2,050Alaska Airlines
Find Deal
Sat, 17 May - Sat, 24 May
Fiji Airways Logo
19:07 - 11:45DCA-SYD
26h 38m2 stops
Fiji Airways Logo
13:45 - 23:04SYD-DCA
23h 19m2 stops
$2,060Fiji Airways
Find Deal
Sat, 17 May - Sat, 24 May
American Airlines Logo
19:32 - 06:55DCA-SYD
21h 23m1 stop
American Airlines Logo
12:10 - 21:30SYD-DCA
23h 20m2 stops
$2,438American Airlines
Find Deal
Sun, 3 Aug - Wed, 20 Aug
American Airlines Logo
17:30 - 07:30DCA-SYD
24h 00m1 stop
American Airlines Logo
10:25 - 18:46SYD-DCA
22h 21m2 stops
$2,440American Airlines
Find Deal
Mon, 14 Jul - Sun, 3 Aug

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

Our best Air Canada deals on Washington, D.C. to Sydney flight tickets
Air Canada
6 May
IAD09:45Washington, D.C. Dulles Intl
31h 35m
2 stops
SYD07:20Sydney Kingsford Smith
20 May
SYD09:20Sydney Kingsford Smith
39h 54m
2 stops
IAD11:14Washington, D.C. Dulles Intl
Air Canada
6 May
IAD09:45Washington, D.C. Dulles Intl
31h 35m
3 stops
SYD07:20Sydney Kingsford Smith
20 May
SYD09:20Sydney Kingsford Smith
39h 54m
2 stops
IAD11:14Washington, D.C. Dulles Intl
Air Canada
1 June
IAD09:45Washington, D.C. Dulles Intl
31h 35m
2 stops
SYD07:20Sydney Kingsford Smith
11 June
SYD09:20Sydney Kingsford Smith
25h 48m
2 stops
IAD21:08Washington, D.C. Dulles Intl

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

Our best Alaska Airlines deals on Washington, D.C. to Sydney flight tickets
Alaska Airlines
14 May
DCA18:35Washington, D.C. Reagan-National
35h 10m
2 stops
SYD19:45Sydney Kingsford Smith
29 May
SYD21:40Sydney Kingsford Smith
33h 04m
2 stops
DCA16:44Washington, D.C. Reagan-National
Alaska Airlines
17 May
IAD19:59Washington, D.C. Dulles Intl
32h 31m
2 stops
SYD18:30Sydney Kingsford Smith
24 May
SYD21:40Sydney Kingsford Smith
32h 34m
2 stops
IAD16:14Washington, D.C. Dulles Intl
Alaska Airlines
28 Aug
IAD20:29Washington, D.C. Dulles Intl
57h 16m
2 stops
SYD19:45Sydney Kingsford Smith
7 Sept
SYD21:40Sydney Kingsford Smith
32h 19m
2 stops
IAD15:59Washington, D.C. Dulles Intl

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 February is, on average, the cheapest month to fly to Sydney from Washington, D.C., with most prices found around $1,470. If you aren’t able to travel to Sydney during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,543.

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

Our data shows that Monday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $0. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $2,457.

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 $2,231. 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 $3,094 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 6 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,570 when searching 6 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 $2,055 on momondo.

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

As of April 2025, prices for Washington, D.C. to Sydney flights are approximately 74% 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

Best price found

$737

Fastest flight time

21h 22m

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 $737. The best return flight deal from Washington, D.C. to Sydney found on momondo in the last 72 hours is $1,657.
The fastest flight from Washington, D.C. to Sydney takes 21h 22m
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?

    Washington, D.C. and Sydney Kingsford Smith are 15700.1 km apart from one another. By plane, this route typically takes 21h 22m.

  • 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
Air CanadaPriceFrom $1,914Free cancellationRating
7.0
9,012 reviews
Search Air Canada flights
United AirlinesPriceFrom $2,292Free cancellationRating
7.4
8,615 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
Katoomba
Terrigal
Lithgow
Penrith
Leura
Manly
Coogee
Cronulla
Bondi Beach
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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Sun 6/4
Sun 13/4

Find better results for your trip to Australia