Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $920
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
10 1月 — 17 1月1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Sydney Kingsford Smith are usually found in May or February, booked 80 days in advance, depart on a Tuesday or Saturday and return on a Friday
Cheap flight deals from Dulles Intl to Sydney
Enter your travel dates to find the best prices.
Cheapest flights from Dulles Intl to Sydney
Explore the most affordable flight options available from Dulles Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 12月 2025.
週三 10/1222:11IAD - SYD
2 stops40h 44mAir Canada
週二 30/1211:20SYD - IAD
2 stops26h 05mAir Canada
Deal found 9/12$2,648
週日 28/1209:00IAD - SYD
2 stops32h 35mAir Canada
週三 11/211:20SYD - IAD
2 stops25h 34mAir Canada
Deal found 10/12$2,676
週日 28/1209:00IAD - SYD
2 stops32h 35mAir Canada
週日 15/211:20SYD - IAD
1 stop26h 01mAir Canada
Deal found 10/12$2,688
週二 9/1213:20IAD - SYD
2 stops28h 15mAir Canada
週二 30/1211:20SYD - IAD
2 stops26h 05mAir Canada
Deal found 9/12$2,707
週三 10/1218:39IAD - SYD
1 stop22h 36mUnited Airlines
週三 31/1214:00SYD - IAD
1 stop22h 55mUnited Airlines
Deal found 9/12$2,802
週三 24/1214:24IAD - SYD
2 stops26h 41mUnited Airlines
週一 19/114:00SYD - IAD
1 stop22h 54mUnited Airlines
Deal found 10/12$2,808
週日 28/1212:58IAD - SYD
2 stops25h 52mDelta
週三 11/210:40SYD - IAD
2 stops29h 08mDelta
Deal found 9/12$2,809
週四 25/1205:35IAD - SYD
2 stops33h 50mMultiple Airlines
週一 19/120:40SYD - IAD
1 stop37h 50mMultiple Airlines
Deal found 10/12$2,870
週三 24/1208:30IAD - SYD
1 stop30h 30mUnited Airlines
週六 17/114:00SYD - IAD
1 stop26h 59mUnited Airlines
Deal found 10/12$2,877
週四 25/1212:58IAD - SYD
2 stops25h 52mDelta
週三 21/110:40SYD - IAD
2 stops23h 41mDelta
Deal found 9/12$2,885
Best flights from Dulles Intl to Sydney
Discover carefully curated flight deals from Dulles Intl to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 12月 2025.
週三 1/409:55IAD - SYD
2 stops31h 25mAir Canada
週二 28/409:20SYD - IAD
2 stops25h 10mAir Canada
Deal found 10/12$1,769
週三 14/118:15IAD - SYD
1 stop23h 00mUnited Airlines
週二 24/212:10SYD - IAD
1 stop23h 17mUnited Airlines
Deal found 10/12$1,824
週四 19/217:46IAD - SYD
1 stop45h 09mQantas Airways
週一 2/314:05SYD - IAD
1 stop24h 43mQantas Airways
Deal found 10/12$1,857
週四 19/206:00IAD - SYD
1 stop32h 55mAmerican Airlines
週一 2/311:20SYD - IAD
2 stops27h 28mAmerican Airlines
Deal found 10/12$1,881
週三 14/116:10IAD - SYD
1 stop25h 05mUnited Airlines
週日 25/111:20SYD - IAD
1 stop21h 02mUnited Airlines
Deal found 10/12$1,824
週二 31/317:45IAD - SYD
1 stop23h 15mUnited Airlines
週日 19/410:20SYD - IAD
1 stop24h 52mUnited Airlines
Deal found 9/12$1,824
週三 1/412:39IAD - SYD
1 stop28h 21mUnited Airlines
週二 28/409:30SYD - IAD
1 stop25h 40mUnited Airlines
Deal found 10/12$1,824
週六 28/322:05IAD - SYD
1 stop42h 55mUnited Airlines
週日 5/409:30SYD - IAD
1 stop29h 09mUnited Airlines
Deal found 10/12$1,842
週六 18/422:17IAD - SYD
1 stop42h 43mUnited Airlines
週一 27/409:30SYD - IAD
2 stops33h 57mUnited Airlines
Deal found 9/12$1,848
週四 22/118:45IAD - SYD
1 stop22h 20mUnited Airlines
週日 15/212:10SYD - IAD
1 stop20h 30mUnited Airlines
Deal found 9/12$1,900
Last-minute flights from Dulles Intl to Sydney
Discover last-minute flight deals from Dulles Intl to Sydney. Data last updated 11 12月 2025 and is based on user searches.
週二 16/1220:05IAD - SYD
1 stop30h 45mJetBlue
週五 2/121:40SYD - IAD
1 stop34h 15mJetBlue
Deal found 9/12$3,861
週二 16/1215:25IAD - SYD
2 stops25h 20mAir New Zealand
週四 8/111:20SYD - IAD
1 stop21h 02mAir New Zealand
Deal found 9/12$3,949
週二 16/1206:00IAD - SYD
1 stop33h 00mUnited Airlines
週六 3/111:20SYD - IAD
1 stop24h 20mUnited Airlines
Deal found 9/12$4,005
週二 16/1209:45IAD - SYD
2 stops31h 50mAir Canada
週一 22/1211:20SYD - IAD
2 stops25h 39mAir Canada
Deal found 9/12$4,008
週五 19/1222:00IAD - SYD
1 stop49h 30mAir China
週一 29/1220:40SYD - IAD
1 stop37h 50mAir China
Deal found 11/12$3,767
週五 19/1208:30IAD - SYD
1 stop32h 45mAir New Zealand
週一 29/1207:45SYD - IAD
2 stops29h 19mAir New Zealand
Deal found 10/12$3,983
週六 20/1222:06IAD - SYD
2 stops43h 29mAir Canada
週六 27/1216:00SYD - IAD
2 stops35h 48mAir Canada
Deal found 9/12$3,576
週日 21/1222:06IAD - SYD
2 stops43h 29mMultiple Airlines
週四 8/120:40SYD - IAD
1 stop37h 50mMultiple Airlines
Deal found 10/12$3,810
One-way flights from Dulles Intl to Sydney
Search for one-way flight options from Dulles Intl to Sydney. Find affordable one-way fares based on user searches. Data last updated 11 12月 2025.
週日 15/315:35IAD - SYD
3 stops38h 00mMultiple Airlines
Deal found 10/12$920
週日 1/314:35IAD - SYD
3 stops38h 00mMultiple Airlines
Deal found 9/12$943
週五 27/210:23IAD - SYD
2 stops29h 02mMultiple Airlines
Deal found 9/12$951
週六 28/207:05IAD - SYD
2 stops32h 20mMultiple Airlines
Deal found 9/12$954
週一 2/218:04IAD - SYD
3 stops44h 06mMultiple Airlines
Deal found 9/12$984
週日 1/210:50IAD - SYD
2 stops28h 35mMultiple Airlines
Deal found 8/12$991
週一 16/307:05IAD - SYD
2 stops33h 20mMultiple Airlines
Deal found 8/12$1,006
Find flight deals from Dulles Intl to Sydney
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 12月 2025.
Customise your flight search to find flights from Dulles Intl 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, Cheapflights users made 647,157 searches. Data last updated 11 12月 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Sydney that are best for you.
Fly from
Dulles Intl
Fly to
Sydney
Route
Depart
Return
Price
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週三 1/4
09:55-08:20
2 stops31h 25m
Sydney Kingsford Smith
週二 28/4
09:20-20:30
2 stops25h 10m
$1,769
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週三 14/1
18:15-09:15
1 stop23h 00m
Sydney Kingsford Smith
週二 24/2
12:10-19:27
1 stop23h 17m
$1,824
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週三 14/1
16:10-09:15
1 stop25h 05m
Sydney Kingsford Smith
週日 25/1
11:20-16:22
1 stop21h 02m
$1,824
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週二 31/3
17:45-08:00
1 stop23h 15m
Sydney Kingsford Smith
週日 19/4
10:20-21:12
1 stop24h 52m
$1,824
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週三 1/4
12:39-08:00
1 stop28h 21m
Sydney Kingsford Smith
週二 28/4
09:30-21:10
1 stop25h 40m
$1,824
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週六 28/3
22:05-08:00
1 stop42h 55m
Sydney Kingsford Smith
週日 5/4
09:30-00:39
1 stop29h 09m
$1,842
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週六 18/4
22:17-07:00
1 stop42h 43m
Sydney Kingsford Smith
週一 27/4
09:30-05:27
2 stops33h 57m
$1,848
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週四 19/2
17:46-06:55
1 stop45h 09m
Sydney Kingsford Smith
週一 2/3
14:05-22:48
1 stop24h 43m
$1,857
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週四 19/2
06:00-06:55
1 stop32h 55m
Sydney Kingsford Smith
週一 2/3
11:20-22:48
2 stops27h 28m
$1,881
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
週四 22/1
18:45-09:05
1 stop22h 20m
Sydney Kingsford Smith
週日 15/2
12:10-16:40
1 stop20h 30m
$1,900
Flights are sorted by cheapest return flights first.
Deals found on 9/12
Showing 1-10 of 20 results
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Best time to book a flight from Dulles Intl to Sydney
Have a flexible travel schedule? Discover the best time to fly to Sydney from Dulles Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Sydney
Prices
More
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Sydney?
Use this chart to determine the optimal time to book a return flight from Dulles Intl to Sydney. Price data was last updated on 5 December 2025.
The best time to book flights from Washington, D.C. Dulles Intl Airport to Sydney is 80 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Sydney?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $600). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $1,296). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IAD to SYD?
Find hourly flight availability from Dulles Intl to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 12月 2025.
When flying from Washington, D.C. Dulles Intl Airport to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 47% versus a flight at midday.
How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to Sydney?
What’s the top stopover airport for flights from Washington, D.C. Dulles Intl Airport to Sydney?
Share of one-stop return flights from Washington, D.C. Dulles Intl Airport to Sydney chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Los Angeles (LAX) – chosen by Cheapflights users on 42% of one-stop itineraries from Washington, D.C. Dulles Intl Airport to Sydney on Cheapflights.
What’s the cheapest stopover airport for flights from Washington, D.C. Dulles Intl Airport to Sydney?
Average return fare for one-stop flights from Washington, D.C. Dulles Intl Airport to Sydney, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Dallas (DFW) is the most affordable one-stop option, with an average return flight price of $1,306.
What’s the fastest stopover option from Washington, D.C. Dulles Intl Airport to Sydney?
Shortest average travel time for one-stop one-way flights from Washington, D.C. Dulles Intl Airport to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via San Francisco (SFO) have the shortest average one-way travel time for one-stop routes: 23h 00m.
Which airport typically offers the quickest stopover for flights from Washington, D.C. Dulles Intl Airport to Sydney?
Average stopover duration for one-stop one-way flights from Washington, D.C. Dulles Intl Airport to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via San Francisco (SFO) offer the fastest connection on this route, with an average stopover time of 1h 59m.
Reviews of airlines servicing Sydney
Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 11 12月 2025.
See what other customers who have flown with United Airlines from Washington, D.C. Dulles Intl Airport to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Smooth flight from Austin to Newark. The crew was friendly.
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to Sydney from Washington, D.C. Dulles Intl?
If you book a flight to Sydney from Washington, D.C. Dulles Intl, you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 7.5 km from the centre of Sydney. There are 0 flights from Washington, D.C. Dulles Intl to Kingsford Smith per day from 1 airline.
How long is the flight from Washington, D.C. Dulles Intl Airport to Sydney?
For as low as $1,824, Air Canada can have you in Sydney from Washington, D.C. Dulles Intl Airport in 23h. Airlines will cover a distance of 15670 km. This flight may include one or multiple stops.
What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Sydney round-trip?
Currently priced at $2,340, United Airlines will fly you from Washington, D.C. Dulles Intl Airport to Sydney and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip.
Can I find deals for business class flights from Dulles Intl to Sydney?
Yes. Cheapflights offers flight deals from Dulles Intl to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Sydney?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $600). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $1,296). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Discover the top airline that operate flights from Dulles Intl to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 11 12月 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Dulles Intl to Sydney?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Dulles Intl to Sydney. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Sydney?
Cheapflights simply makes it quick and affordable to book flights from Dulles Intl to Sydney by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Dulles Intl to Sydney with no change fees?
Certainly. Search results for flights to Sydney from Dulles Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Dulles Intl to Sydney become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Dulles Intl today and book when prices fit your budget.
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