Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $696
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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
20 Dec — 27 Dec1
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
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 20 November 2025.
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 20 November 2025.
Mon 1/1213:30IAD - SYD
2 stops37h 50mTurkish Airlines
Thu 11/1221:15SYD - IAD
2 stops38h 05mTurkish Airlines
Deal found 17/11$2,163
Wed 17/1217:08IAD - SYD
2 stops35h 42mMultiple Airlines
Mon 5/108:45SYD - IAD
2 stops29h 48mMultiple Airlines
Deal found 19/11$2,234
Mon 1/1213:30IAD - SYD
2 stops37h 50mTurkish Airlines
Sun 7/1221:15SYD - IAD
2 stops54h 30mTurkish Airlines
Deal found 18/11$2,251
Thu 20/1106:04IAD - SYD
2 stops46h 46mMultiple Airlines
Thu 27/1122:20SYD - IAD
2 stops40h 21mMultiple Airlines
Deal found 19/11$2,323
Fri 5/1213:30IAD - SYD
2 stops37h 50mTurkish Airlines
Fri 12/1221:15SYD - IAD
2 stops54h 30mTurkish Airlines
Deal found 17/11$2,345
Tue 30/1213:30IAD - SYD
2 stops37h 50mTurkish Airlines
Mon 19/121:15SYD - IAD
2 stops38h 05mTurkish Airlines
Deal found 18/11$2,405
Sat 6/1209:45IAD - SYD
2 stops29h 10mAir Canada
Sat 13/1211:20SYD - IAD
2 stops25h 39mAir Canada
Deal found 18/11$2,429
Mon 29/1222:06IAD - SYD
2 stops40h 49mAir Canada
Tue 13/111:20SYD - IAD
2 stops25h 34mAir Canada
Deal found 18/11$2,436
Fri 19/1218:07IAD - SYD
2 stops45h 08mCathay Pacific
Sat 3/122:20SYD - IAD
2 stops40h 45mCathay Pacific
Deal found 19/11$2,448
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 20 November 2025.
Fri 16/117:26IAD - SYD
3 stops34h 19mAlaska Airlines
Mon 26/121:40SYD - IAD
3 stops35h 24mAlaska Airlines
Deal found 18/11$2,109
Mon 16/218:05IAD - SYD
1 stop23h 10mUnited Airlines
Tue 3/311:20SYD - IAD
1 stop21h 04mUnited Airlines
Deal found 17/11$2,409
Sun 11/118:04IAD - SYD
2 stops33h 41mAlaska Airlines
Tue 27/121:40SYD - IAD
2 stops34h 46mAlaska Airlines
Deal found 18/11$2,237
Fri 9/118:04IAD - SYD
2 stops33h 41mAlaska Airlines
Sat 17/121:40SYD - IAD
3 stops35h 24mAlaska Airlines
Deal found 18/11$2,275
Tue 13/117:26IAD - SYD
3 stops34h 19mAlaska Airlines
Tue 27/121:40SYD - IAD
2 stops34h 46mAlaska Airlines
Deal found 19/11$2,315
Sun 18/117:26IAD - SYD
3 stops34h 19mAlaska Airlines
Thu 22/121:40SYD - IAD
3 stops35h 24mAlaska Airlines
Deal found 19/11$2,323
Last-minute flights from Dulles Intl to Sydney
Discover last-minute flight deals from Dulles Intl to Sydney. Data last updated 20 November 2025 and is based on user searches.
Mon 24/1112:35IAD - SYD
2 stops29h 00mAir Canada
Mon 1/1216:00SYD - IAD
2 stops39h 46mAir Canada
Deal found 18/11$2,656
Mon 24/1112:35IAD - SYD
2 stops28h 10mAir New Zealand
Mon 1/1211:20SYD - IAD
1 stop26h 05mAir New Zealand
Deal found 18/11$2,786
Mon 24/1110:30IAD - SYD
1 stop28h 30mEmirates
Mon 1/1221:45SYD - IAD
1 stop50h 25mEmirates
Deal found 18/11$3,272
Thu 27/1112:45IAD - SYD
2 stops26h 15mUnited Airlines
Sun 14/1214:00SYD - IAD
2 stops23h 24mUnited Airlines
Deal found 19/11$11,213
Fri 28/1122:12IAD - SYD
1 stop40h 48mUnited Airlines
Tue 23/1211:50SYD - IAD
1 stop20h 34mUnited Airlines
Deal found 19/11$11,257
Fri 28/1108:30IAD - SYD
2 stops43h 45mANA
Sun 21/1212:25SYD - IAD
1 stop36h 45mANA
Deal found 19/11$11,797
Sat 29/1112:41IAD - SYD
2 stops39h 34mANA
Tue 23/1221:45SYD - IAD
1 stop27h 25mANA
Deal found 19/11$11,011
Sat 29/1112:41IAD - SYD
2 stops39h 34mANA
Mon 22/1221:45SYD - IAD
2 stops30h 00mANA
Deal found 19/11$11,026
Sat 29/1112:55IAD - SYD
1 stop26h 05mUnited Airlines
Sun 21/1211:20SYD - IAD
1 stop23h 25mUnited Airlines
Deal found 19/11$11,205
Sat 29/1112:41IAD - SYD
2 stops39h 34mANA
Fri 26/1221:45SYD - IAD
1 stop27h 25mANA
Deal found 19/11$11,782
Sat 29/1111:10IAD - SYD
2 stops59h 45mMultiple Airlines
Wed 24/1221:45SYD - IAD
1 stop27h 25mMultiple Airlines
Deal found 19/11$11,805
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 20 November 2025.
Mon 2/217:37IAD - SYD
3 stops50h 58mMultiple Airlines
Deal found 18/11$696
Tue 3/217:26IAD - SYD
3 stops51h 09mMultiple Airlines
Deal found 17/11$807
Sun 15/207:05IAD - SYD
3 stops37h 30mMultiple Airlines
Deal found 18/11$956
Tue 2/1213:30IAD - SYD
2 stops50h 35mMultiple Airlines
Deal found 18/11$1,063
Mon 1/1213:30IAD - SYD
2 stops50h 35mMultiple Airlines
Deal found 19/11$1,071
Wed 26/1106:04IAD - SYD
2 stops34h 56mMultiple Airlines
Deal found 18/11$1,111
Sun 1/214:35IAD - SYD
2 stops48h 55mMultiple Airlines
Deal found 18/11$1,182
Tue 20/117:26IAD - SYD
3 stops34h 19mAlaska Airlines
Deal found 19/11$1,192
Cheapflights Fare Finder
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 20 November 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
Fri 16/1
17:26-19:45
3 stops34h 19m
Sydney Kingsford Smith
Mon 26/1
21:40-17:04
3 stops35h 24m
$2,109
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Sun 11/1
18:04-19:45
2 stops33h 41m
Sydney Kingsford Smith
Tue 27/1
21:40-16:26
2 stops34h 46m
$2,237
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Fri 9/1
18:04-19:45
2 stops33h 41m
Sydney Kingsford Smith
Sat 17/1
21:40-17:04
3 stops35h 24m
$2,275
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Tue 13/1
17:26-19:45
3 stops34h 19m
Sydney Kingsford Smith
Tue 27/1
21:40-16:26
2 stops34h 46m
$2,315
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
Thu 22/1
21:40-17:04
3 stops35h 24m
$2,323
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Mon 16/2
18:05-09:15
1 stop23h 10m
Sydney Kingsford Smith
Tue 3/3
11:20-16:24
1 stop21h 04m
$2,409
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Tue 3/2
17:26-12:35
3 stops51h 09m
$807
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Mon 2/2
10:50-07:25
2 stops28h 35m
$905
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Tue 20/1
17:26-19:45
3 stops34h 19m
$1,192
Washington, D.C.Sydney
IAD - SYD
IADSYD
Washington, D.C. Dulles Intl
Sun 8/2
18:04-19:45
2 stops33h 41m
$1,294
Flights are sorted by cheapest return flights first.
Deals found on 17/11
Showing 1-10 of 14 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 14 November 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, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $939). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $1,330). 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 20 November 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.
San Francisco (SFO) – chosen by Cheapflights users on 46% 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 $1,340.
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 05m.
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 58m.
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 20 November 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.
The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
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 $2,109, Alaska Airlines can have you in Sydney from Washington, D.C. Dulles Intl Airport in 34h 19m. 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 $2,400, 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, December is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $939). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $1,330). 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 20 November 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 20 November 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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