A sunset over Sydney's skyline, including the Sydney Opera House and Harbour Bridge.

$763 Cheap Flights from Washington (IAD) to Sydney (SYD)

View $763 flight on Tue, Sep 15, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Sydney Airport (SYD)

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Cheap Flights from Washington to Sydney (IAD-SYD)

Prices were available within the past 7 days and start at $763 for one-way flights and $1,349 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air New Zealand
Mon, Jun 28 - Wed, Jul 7
IAD
Washington
SYD
Sydney
$1,349 Roundtrip, found 4 hours ago
$1,349
Roundtrip
found 4 hours ago
Select Air New Zealand flight, departing Mon, Jun 28 from Washington to Sydney, returning Wed, Jul 7, priced at $1,349 found 4 hours ago
Air Canada
Wed, Feb 3 - Wed, Feb 17
IAD
Washington
SYD
Sydney
$1,408 Roundtrip, found 6 hours ago
$1,408
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Wed, Feb 3 from Washington to Sydney, returning Wed, Feb 17, priced at $1,408 found 6 hours ago
Etihad Airways
Tue, Aug 25 - Thu, Sep 17
IAD
Washington
SYD
Sydney
$1,482 Roundtrip, found 7 hours ago
$1,482
Roundtrip
found 7 hours ago
Select Etihad Airways flight, departing Tue, Aug 25 from Washington to Sydney, returning Thu, Sep 17, priced at $1,482 found 7 hours ago
Lufthansa
Mon, May 3 - Tue, May 11
IAD
Washington
SYD
Sydney
$1,505 Roundtrip, found 1 day ago
$1,505
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Mon, May 3 from Washington to Sydney, returning Tue, May 11, priced at $1,505 found 1 day ago
Turkish Airlines
Sun, Sep 13 - Tue, Sep 29
IAD
Washington
SYD
Sydney
$1,513 Roundtrip, found 5 hours ago
$1,513
Roundtrip
found 5 hours ago
Select Turkish Airlines flight, departing Sun, Sep 13 from Washington to Sydney, returning Tue, Sep 29, priced at $1,513 found 5 hours ago
Alaska Airlines
Sun, Jan 24 - Sun, Feb 7
IAD
Washington
SYD
Sydney
$1,530 Roundtrip, found 2 days ago
$1,530
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sun, Jan 24 from Washington to Sydney, returning Sun, Feb 7, priced at $1,530 found 2 days ago
Cathay Pacific
Tue, Oct 20 - Sun, Nov 1
IAD
Washington
SYD
Sydney
$1,602 Roundtrip, found 4 hours ago
$1,602
Roundtrip
found 4 hours ago
Select Cathay Pacific flight, departing Tue, Oct 20 from Washington to Sydney, returning Sun, Nov 1, priced at $1,602 found 4 hours ago
Delta
Tue, Sep 8 - Wed, Sep 30
IAD
Washington
SYD
Sydney
$1,641 Roundtrip, found 4 hours ago
$1,641
Roundtrip
found 4 hours ago
Select Delta flight, departing Tue, Sep 8 from Washington to Sydney, returning Wed, Sep 30, priced at $1,641 found 4 hours ago
Air China
Tue, Nov 3 - Mon, Nov 16
IAD
Washington
SYD
Sydney
$1,667 Roundtrip, found 2 days ago
$1,667
Roundtrip
found 2 days ago
Select Air China flight, departing Tue, Nov 3 from Washington to Sydney, returning Mon, Nov 16, priced at $1,667 found 2 days ago
Qantas Airways
Wed, Mar 3 - Wed, Mar 17
IAD
Washington
SYD
Sydney
$1,805 Roundtrip, found 16 hours ago
$1,805
Roundtrip
found 16 hours ago
Select Qantas Airways flight, departing Wed, Mar 3 from Washington to Sydney, returning Wed, Mar 17, priced at $1,805 found 16 hours ago

Alternative airports near Sydney

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kingsford Smith Intl. SYD. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $1,771
SYD
Kingsford Smith Intl.
Cheapest
Average driving time to city center16 min
Flights from $1,771

Find the cheapest month to fly from Washington (IAD) to Sydney (SYD)

September is typically the cheapest month to fly

From $1,240 - $1,923 per traveler.

What you need to know for your flight from Washington Dulles Intl. to Kingsford Smith Intl.

Washington (IAD) to Sydney (SYD) at a glance

Travel from Washington Dulles International Airport (IAD) to Sydney's Kingsford Smith International Airport (SYD) with a range of airlines on this international long-haul route. Discover options for cheap flights from Washington to Sydney and compare various airlines to find the best airfare that suits your schedule and budget. As you plan your journey, get ready to explore Sydney's iconic landmarks and vibrant neighborhoods.

  • Fastest flight duration: around 21 hours in-flight, plus roughly 2h 30m layover with one stop
  • Route distance: roughly 9,700 miles (15,610 km)
  • Flights per week: around 7 departures on average
  • Typical fares (one-way): economy tickets often range from $425–$1200, depending on seasonality and how far ahead you book

Flights from Washington Dulles International Airport (IAD) to Kingsford Smith International Airport (SYD)

According to recent traveler bookings, the top airlines flying from Washington to Sydney are often selected for their one-stop and multi-stop flight options. Popular layover points include San Francisco International Airport (SFO) with an approximate 2h 30m layover, Los Angeles International Airport (LAX) at about 2h 15m, and Dallas-Fort Worth International Airport (DFW) with a roughly 1h 30m layover. These choices provide the flexibility to combine price, total travel time, and cabin class for the best travel itinerary.

  • United: This full-service airline provides comprehensive one-stop flights, with one-way prices usually falling between $660 and $1670. United operates about 55% of the departures on this route, featuring an in-flight duration of 21 hours and a total travel time of approximately 23 hours and 15 minutes, including layovers.
  • American Airlines: As a full-service carrier, American Airlines offers both one-stop and multi-stop options, with one-way fares generally ranging from $425 to $1055. It accounts for around 23% of the flights on this route, with multi-stop journeys taking about 22 hours in transit and an overall travel time of 26 hours and 30 minutes.
  • Qantas Airways: This full-service airline provides one-stop travel, with one-way ticket prices typically between $435 and $3640. Qantas operates roughly 7% of the departures along this route, featuring a flight time of 21 hours and a total journey time close to 23 hours and 15 minutes, including layovers.
  • Air New Zealand: A full-service airline, Air New Zealand offers one-stop flights, with one-way fares usually ranging from $780 to $945. It represents about 6% of the departures on this route, with an in-flight duration of 21 hours and a total travel time of around 23 hours and 15 minutes, including layovers.
  • All Nippon Airways: This full-service carrier provides one-stop service, with one-way fares typically between $960 and $3195. All Nippon Airways contributes approximately 5% of the departures for this route, with an in-flight time of 21 hours and a total journey time of about 23 hours and 15 minutes, including layovers.

Alternative route from Washington (IAD) to Sydney (SYD)

  • Washington to Sydney (DCA-SYD): Ronald Reagan Washington National Airport (DCA) is located approximately 23 miles from Washington Dulles International Airport (IAD). One-way economy ticket prices for this journey generally range between $410 and $1320, varying by season and the timing of your booking. Travelers can choose from both one-stop and multi-stop flights, with common layover locations including Los Angeles International Airport (LAX) and Dallas-Fort Worth International Airport (DFW). Leading airlines servicing this route are American Airlines and Qantas Airways. Additionally, business class service is offered on this route.

How to find the best prices for flights from Washington (IAD) to Sydney (SYD)

Getting some of the best deals on flights from Washington to Sydney is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are typically found when booking at least two months in advance, which coincides with when most travelers make their reservations. Afternoon departures, from 12 PM to 6 PM, not only tend to offer lower fares but are also the most popular flight times. Additionally, flying on Friday usually provides cheaper prices, while Tuesday remains the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Kingsford Smith International Airport from Washington Dulles International Airport

Sydney welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Washington Dulles International Airport is roughly a 40-minute drive (covering about 29 miles) from central Washington. Here's how to reach Sydney efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Sydney, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Kingsford Smith International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Kingsford Smith International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Kingsford Smith International Airport, a couple of key transport links are conveniently nearby. International Airport Station, a metro station, is located about 0.1 miles from the airport and can be reached on foot, while Sydney Arncliffe Station, a train station, is approximately 1.2 miles away by car. Additionally, Sydney Seaport, a seaport, is situated about 6.7 miles from the airport and is most easily accessed by car.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) cost?
You can find cheap one-way flights from $763 and cheap return flights from $1,349 Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) with Expedia. One-way flights typically cost between $1114 and $11011, and return flights often range between $1615 and $12617. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
March is the cheapest month to fly from Washington, DC (IAD) to Sydney (SYD), with average return fares around $856. This price is about 48% lower than the average throughout the year, as March typically experiences lower demand after the busy holiday season. Other cheap months to fly from Washington, DC to Sydney include February and April.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Enter IAD to SYD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Singapore Airlines is one of the cheapest airlines offering connecting flights from Washington, DC (IAD) to Sydney (SYD), with round-trip tickets starting from around $2,862. This flight includes a layover in Seattle - Tacoma Intl. (SEA). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
For flights from Washington, DC (IAD) to Sydney, NSW (SYD), the best months to fly are March and February. March offers an average price of about $856, making it a reasonable option for international travel. February is also popular, providing a good balance of price and flight availability, ensuring a smooth journey. This information is based on booking data from the past year.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The earliest flight from Washington Dulles International Airport (IAD) to Kingsford Smith International Airport (SYD) typically departs at around 5:00 AM, operated by American Airlines. This is a seasonal service, so check for availability during your travel dates. An early flight can help you make the most of your time in Sydney. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The most popular departure times for flights from Washington, DC (IAD) to Sydney, NSW (SYD) are in the late afternoon, from 3pm to 6pm. This accounts for around 35% of total traffic. Many major carriers, including American Airlines and United Airlines, offer flights during this window. Many travelers prefer this time because it allows for a full day in Washington before heading off to Sydney.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Flying from IAD to SYD with a connection usually takes about 23 hours, traveling roughly 9,745 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Business class is available on flights from IAD to SYD. Airlines that offer business class service on this route include:

  • Qatar Airways
  • United Airlines
  • Emirates
  • American Airlines
  • Etihad Airways
  • Air Canada
  • All Nippon Airways
  • Korean Air
  • Swiss International Air Lines
  • British Airways

First class is available with American Airlines and Emirates.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sydney from Washington Dulles Intl. (IAD)?
From Washington Dulles Intl. (IAD), you can fly into Kingsford Smith Intl. (SYD) to reach Sydney. Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), Dallas-Fort Worth Intl. (DFW), Charlotte-Douglas Intl. (CLT) before reaching Sydney. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) Sydney Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Canada, Air China, Air New Zealand, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, British Airways, Cathay Pacific, Delta, Emirates, Etihad Airways, JetBlue Airways, Korean Air, Lufthansa, Malaysia Airlines, Qantas Airways, Qatar Airways, Turkish Airlines, United
Roundtrip price
$1,359
Distance
9744 mi

Book with confidence

Washington to Sydney Flights

The cheapest times to fly from Washington to Sydney

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Sydney are during the month of June. You can find some of the cheapest flights from Washington to Sydney with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Sydney

Sunday is one of the best days to book for cheap flights from Washington to Sydney: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Sydney

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Sydney in 2026. You can also book with separate airlines for your outbound and return journeys, from $763 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Sydney flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Sydney airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Sydney Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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