WAS - SYD

$722 Find Cheap Flights from Washington, D.C. to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Sydney departing on 23/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Sydney, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
$1,652
Typical prices: $1,218-$2,261
Air New Zealand
Sat 25/4Fri 1/5
IAD - SYD • 2 stops
Cheapest one-way flight
$722
Typical prices: $621-$1,395
Multiple Airlines
Mon 23/2
IAD - SYD • 3 stops
Top airlines
Air Canada
Cheapest • from $1,651 (return)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 39% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 30% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Sydney (WAS-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Washington, D.C. to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Washington, D.C. to Sydney

Sat, 25 Apr - Fri, 1 May
Air New Zealand Logo
09:55 - 07:20
IAD
-
SYD
31h 25m
2 stops
Air New Zealand Logo
09:20 - 20:37
SYD
-
IAD
25h 17m
2 stops
$1,652Air New Zealand
Thu, 14 May - Sun, 17 May
Air New Zealand Logo
09:55 - 07:20
IAD
-
SYD
31h 25m
1 stop
Air New Zealand Logo
09:20 - 07:50
SYD
-
IAD
36h 30m
2 stops
$1,653Air New Zealand
Fri, 24 Apr - Fri, 1 May
Multiple Airlines Logo
09:00 - 07:20
IAD
-
SYD
32h 20m
1 stop
Multiple Airlines Logo
09:20 - 20:37
SYD
-
IAD
25h 17m
2 stops
$1,659Multiple Airlines
Tue, 17 Mar - Tue, 24 Mar
Multiple Airlines Logo
09:59 - 07:25
DCA
-
SYD
30h 26m
1 stop
Multiple Airlines Logo
14:00 - 20:00
SYD
-
DCA
45h 00m
2 stops
$1,673Multiple Airlines
Tue, 28 Apr - Tue, 5 May
Multiple Airlines Logo
09:59 - 07:30
DCA
-
SYD
31h 31m
1 stop
Multiple Airlines Logo
13:15 - 20:00
SYD
-
DCA
44h 45m
2 stops
$1,689Multiple Airlines
Tue, 3 Mar - Tue, 17 Mar
Air Canada Logo
12:43 - 09:35
IAD
-
SYD
28h 52m
2 stops
Air Canada Logo
10:20 - 21:23
SYD
-
IAD
26h 03m
2 stops
$1,696Air Canada
Tue, 24 Feb - Tue, 17 Mar
Air Canada Logo
09:45 - 09:35
IAD
-
SYD
31h 50m
2 stops
Air Canada Logo
10:20 - 20:26
SYD
-
IAD
25h 06m
2 stops
$1,698Air Canada
Wed, 25 Feb - Wed, 11 Mar
Air Canada Logo
16:30 - 09:35
IAD
-
SYD
25h 05m
2 stops
Air Canada Logo
10:20 - 20:26
SYD
-
IAD
25h 06m
2 stops
$1,705Air Canada
Mon, 9 Mar - Mon, 16 Mar
Qantas Airways Logo
16:59 - 09:20
DCA
-
SYD
25h 21m
2 stops
Qantas Airways Logo
13:05 - 19:46
SYD
-
DCA
21h 41m
1 stop
$1,776Qantas Airways
Mon, 9 Feb - Tue, 17 Mar
Qantas Airways Logo
15:41 - 10:55
BWI
-
SYD
27h 14m
2 stops
Qantas Airways Logo
13:05 - 22:59
SYD
-
BWI
24h 54m
1 stop
$1,793Qantas Airways
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Sydney flights

Get data-powered insights and trends into flights from Washington, D.C. to Sydney to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Washington, D.C. to Sydney?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Sydney departing in April.

What is the cheapest month to fly from Washington, D.C. to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Sydney is April, where tickets cost $1,241 (return) on average. On the other hand, the most expensive months are December and October, where the average cost of round-trip tickets is $2,379 and $2,059 respectively.

How far in advance should I book a flight from Washington, D.C. to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. to Sydney, you should book around 3 weeks before departure, which saves you about 39% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$722
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 30% lower on average.
Flight from Washington Dulles Airport to Sydney

When to book flights from Washington, D.C. to Sydney

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Sydney

  • What are the popular layovers for flights from Washington, D.C. to Sydney?

    Airlines with stopover options on Washington, D.C. to Sydney route stop in one or more cities. However, flight routes and layover durations vary among airlines. For this reason, consider checking the flight route before booking to avoid extended layovers. Most airlines have a layover in major cities, including Dallas, San Francisco, Houston, Vancouver, Los Angeles, Honolulu, Tokyo, Seoul, Beijing, New Delhi, Abu Dhabi, Doha, and Dubai.

  • What is the carry-on and checked luggage allowance for economy on cheap flights from Washington, D.C. to Sydney?

    Your carry-on and checked luggage policy depends on your airline. For ANA, the maximum dimensions for your carry-on are 22 x 16 x 10 inches. You can also bring another bag weighing up to 50 lb. If you book Air New Zealand, your carry-on shouldn’t exceed 22 x 14 x 9 inches. Your additional bag should weigh 50 lb at most. However, your bags must fit in the overhead cabin or beneath your seat.

  • What airlines offer sustainable travel from Washington, D.C. to Sydney?

    Singapore Airlines offers an eco-friendly journey on this route. These airlines cut food waste to achieve net zero carbon emissions by 2050. Cathay Pacific is committed to ensuring a greener environment by using sustainable aviation fuel to lower its carbon footprint.

  • What’s the best way to travel from SYD airport to downtown Sydney?

    One way to travel from SYD airport to downtown Sydney is to take the T3 or T8 trains to arrive in the city in around 17 minutes. If you take the N20 or 438X buses, you get to the city in approximately 25 minutes. A taxi or rental car offers a quick journey, about 15 minutes to the city.

  • What is the cheapest flight from Washington, D.C. to Sydney?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Sydney was $722 for a one-way ticket and $1,651 for a return.

  • Which airports will I be using when flying from Washington, D.C. to Sydney?

    On your way to Sydney, you’ll fly out from one of these Washington, D.C. airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You’ll be landing at Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Washington, D.C. to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Sydney?

    Star Alliance is the only airline alliance operating flights between Washington, D.C. and Sydney.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sydney with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. to Sydney

  • Washington Dulles International Airport (IAD) is a hub for United Airlines. At the same time, Sydney Kingsford Smith International Airport (SYD) serves as a primary hub for Qantas. It’s also a secondary hub for Jetstar and Virgin Australia.
  • Japan Airlines offer an extensive array of special meals to meet passengers’ religious and health requirements. Those who need a special diet are required to order a meal at least 24h before take-off.
  • The Silver train offers a reliable journey from downtown via the subway to the airport in about 49 minutes. Another way to get to the airport from the city is taking the Virginia Breeze bus, which gets you to the airport terminal in around 1h 5min.
  • Suppose you upgrade to business class on cheap flights from Washington, D.C. to Sydney. In that case, you enjoy numerous amenities, including priority check-in and boarding, access to the VIP lounge, premium dining, complimentary snacks and drinks, inflight entertainment, amenity kits, and working space.
  • Besides Sydney, IAD airport serves several nearby cities. You can visit Botany to the east, Brighton-Le-Sands to the southwest, Wolli Creek to the northwest, and Rosebery to the northeast. You can board a public bus if you need a cheap way to get to these cities. Alternatively, you can rent a car at the airport to drive at your own pace.

Reviews of the top airline flying from Washington, D.C. to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11205 reviews
7.5Boarding
6.4Food
8.0Crew
7.2Comfort
6.9Entertainment
Airline reviews

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

4.0 OkayAllison, Jan 2026
MKE - DFW
Read more American Airlines reviews

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

delayed due to weather. Could not communicate with family since the wifi was broken

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

We were told the flight was delayed 5 times, then it was moved to the next day.

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

Everything you need to know for your flight from Washington, D.C. to Sydney

Information on your arrival and departure airports