Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $875
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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
25 Jan — 1 Feb1
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 26 December 2025.
Sun 28/1218:07IAD - SYD
2 stops34h 43mCathay Pacific
Wed 11/222:20SYD - IAD
2 stops40h 28mCathay Pacific
Deal found 24/12$2,232
Mon 29/1206:05IAD - SYD
2 stops33h 20mMultiple Airlines
Thu 15/120:40SYD - IAD
1 stop37h 50mMultiple Airlines
Deal found 25/12$2,355
Sun 28/1218:07IAD - SYD
2 stops34h 43mCathay Pacific
Sun 15/208:45SYD - IAD
2 stops30h 03mCathay Pacific
Deal found 25/12$2,418
Sun 28/1209:45IAD - SYD
3 stops31h 50mAir Canada
Sun 15/211:20SYD - IAD
2 stops25h 34mAir Canada
Deal found 24/12$2,570
Sun 28/1209:45IAD - SYD
2 stops31h 50mAir Canada
Wed 11/211:20SYD - IAD
1 stop26h 05mAir Canada
Deal found 25/12$2,573
Thu 25/1217:48IAD - SYD
2 stops47h 47mAir Canada
Sun 18/111:20SYD - IAD
2 stops25h 34mAir Canada
Deal found 25/12$2,624
Fri 26/1213:15IAD - SYD
2 stops28h 20mAir Canada
Thu 15/111:20SYD - IAD
2 stops25h 34mAir Canada
Deal found 25/12$2,688
Thu 25/1222:06IAD - SYD
2 stops43h 29mAir Canada
Thu 15/111:20SYD - IAD
2 stops25h 34mAir Canada
Deal found 25/12$2,692
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 26 December 2025.
Sat 11/417:26IAD - SYD
1 stop23h 29mQantas Airways
Mon 11/512:00SYD - IAD
1 stop24h 19mQantas Airways
Deal found 25/12$1,863
Fri 20/218:20IAD - SYD
3 stops33h 25mMultiple Airlines
Tue 10/321:40SYD - IAD
3 stops34h 47mMultiple Airlines
Deal found 25/12$2,111
Tue 20/113:30IAD - SYD
2 stops37h 50mTurkish Airlines
Mon 9/221:15SYD - IAD
2 stops38h 05mTurkish Airlines
Deal found 25/12$2,151
Thu 28/519:36IAD - SYD
1 stop21h 19mQantas Airways
Fri 5/612:00SYD - IAD
1 stop24h 27mQantas Airways
Deal found 26/12$1,863
Fri 20/218:20IAD - SYD
3 stops33h 25mMultiple Airlines
Tue 3/321:40SYD - IAD
3 stops35h 47mMultiple Airlines
Deal found 25/12$2,111
Sat 14/217:32IAD - SYD
2 stops28h 23mQantas Airways
Mon 23/214:05SYD - IAD
1 stop24h 43mQantas Airways
Deal found 25/12$2,060
Sun 18/117:26IAD - SYD
3 stops34h 19mMultiple Airlines
Sat 24/121:40SYD - IAD
3 stops35h 24mMultiple Airlines
Deal found 25/12$2,130
Tue 24/218:20IAD - SYD
3 stops33h 25mMultiple Airlines
Tue 17/321:40SYD - IAD
3 stops35h 31mMultiple Airlines
Deal found 25/12$2,153
Wed 14/117:26IAD - SYD
3 stops34h 19mMultiple Airlines
Tue 3/221:40SYD - IAD
2 stops34h 46mMultiple Airlines
Deal found 24/12$2,187
Sat 24/117:26IAD - SYD
3 stops34h 19mMultiple Airlines
Sat 7/221:40SYD - IAD
3 stops35h 24mMultiple Airlines
Deal found 25/12$2,208
Last-minute flights from Dulles Intl to Sydney
Discover last-minute flight deals from Dulles Intl to Sydney. Data last updated 26 December 2025 and is based on user searches.
Sat 17/117:26IAD - SYD
3 stops34h 19mMultiple Airlines
Tue 10/221:40SYD - IAD
2 stops34h 46mMultiple Airlines
Deal found 24/12$2,075
Sun 18/117:26IAD - SYD
3 stops34h 19mMultiple Airlines
Sat 24/121:40SYD - IAD
3 stops35h 24mMultiple Airlines
Deal found 24/12$2,089
Mon 19/121:15IAD - SYD
2 stops54h 05mTurkish Airlines
Wed 25/221:15SYD - IAD
2 stops38h 05mTurkish Airlines
Deal found 25/12$2,092
Tue 20/113:30IAD - SYD
2 stops37h 50mTurkish Airlines
Tue 9/621:05SYD - IAD
2 stops36h 45mTurkish Airlines
Deal found 24/12$2,016
Sun 25/113:30IAD - SYD
2 stops37h 50mTurkish Airlines
Wed 28/121:15SYD - IAD
2 stops54h 30mTurkish Airlines
Deal found 24/12$1,978
Fri 30/117:26IAD - SYD
2 stops33h 19mQantas Airways
Sun 8/214:05SYD - IAD
1 stop23h 12mQantas Airways
Deal found 25/12$1,822
Fri 30/121:15IAD - SYD
2 stops54h 05mTurkish Airlines
Sun 8/221:15SYD - IAD
2 stops38h 05mTurkish Airlines
Deal found 24/12$2,093
Sat 31/117:26IAD - SYD
2 stops28h 29mQantas Airways
Fri 13/214:05SYD - IAD
1 stop24h 43mQantas Airways
Deal found 23/12$1,820
Sat 31/117:45IAD - SYD
2 stops48h 45mAir New Zealand
Fri 13/209:55SYD - IAD
2 stops28h 21mAir New Zealand
Deal found 23/12$2,008
Sat 31/117:45IAD - SYD
2 stops47h 00mAir New Zealand
Sat 14/219:15SYD - IAD
2 stops41h 26mAir New Zealand
Deal found 24/12$2,084
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 26 December 2025.
Wed 1/406:00IAD - SYD
2 stops34h 30mMultiple Airlines
Deal found 25/12$875
Sun 15/219:20IAD - SYD
2 stops44h 05mMultiple Airlines
Deal found 25/12$991
Tue 20/113:30IAD - SYD
2 stops37h 50mTurkish Airlines
Deal found 25/12$1,096
Wed 11/221:15IAD - SYD
2 stops54h 05mTurkish Airlines
Deal found 24/12$1,106
Wed 1/413:20IAD - SYD
2 stops39h 50mTurkish Airlines
Deal found 24/12$1,108
Tue 10/221:15IAD - SYD
2 stops54h 05mTurkish Airlines
Deal found 24/12$1,121
Sun 8/221:15IAD - SYD
2 stops54h 05mTurkish Airlines
Deal found 24/12$1,136
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 26 December 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 26 December 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
Sat 11/4
17:26-06:55
1 stop23h 29m
Sydney Kingsford Smith
Mon 11/5
12:00-22:19
1 stop24h 19m
$1,863
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Thu 28/5
19:36-06:55
1 stop21h 19m
Sydney Kingsford Smith
Fri 5/6
12:00-22:27
1 stop24h 27m
$1,863
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Sat 14/2
17:32-13:55
2 stops28h 23m
Sydney Kingsford Smith
Mon 23/2
14:05-22:48
1 stop24h 43m
$2,060
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Fri 20/2
18:20-19:45
3 stops33h 25m
Sydney Kingsford Smith
Tue 10/3
21:40-17:27
3 stops34h 47m
$2,111
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Fri 20/2
18:20-19:45
3 stops33h 25m
Sydney Kingsford Smith
Tue 3/3
21:40-17:27
3 stops35h 47m
$2,111
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Sun 18/1
17:26-19:45
3 stops34h 19m
Sydney Kingsford Smith
Sat 24/1
21:40-17:04
3 stops35h 24m
$2,130
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Tue 20/1
13:30-19:20
2 stops37h 50m
Sydney Kingsford Smith
Mon 9/2
21:15-19:20
2 stops38h 05m
$2,151
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Tue 24/2
18:20-19:45
3 stops33h 25m
Sydney Kingsford Smith
Tue 17/3
21:40-18:11
3 stops35h 31m
$2,153
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Wed 14/1
17:26-19:45
3 stops34h 19m
Sydney Kingsford Smith
Tue 3/2
21:40-16:26
2 stops34h 46m
$2,187
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Sat 24/1
17:26-19:45
3 stops34h 19m
Sydney Kingsford Smith
Sat 7/2
21:40-17:04
3 stops35h 24m
$2,208
Flights are sorted by cheapest return flights first.
Deals found on 25/12
Showing 1-10 of 18 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 19 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 $595). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $1,285). 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 26 December 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.
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 $1,295.
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 26 December 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.
I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
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 $1,863, Qantas Airways can have you in Sydney from Washington, D.C. Dulles Intl Airport in 23h 29m. Airlines will cover a distance of 15670 km.
What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Sydney round-trip?
Currently priced at $2,301, 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.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Sydney one-way?
The cheapet airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Sydney are American Airlines ($611), Qantas Airways ($630), and United Airlines ($1,328).
Can I find deals for flights from Dulles Intl to Sydney that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Sydney?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Sydney.
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 $595). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $1,285). 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.
Explore flights to Sydney departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 26 December 2025.
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 26 December 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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