$583+ Cheap flights from Dulles Intl (IAD) to Sydney (SYD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
Oct 21 — Oct 281
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to Sydney with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Dulles Intl to Sydney
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Cheapest flights from Dulles Intl to SydneyExplore 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 September 21, 2026.
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 September 21, 2026.
This lol.travel deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:55 am -
2 stops31h 40m
Mon 11/911:20 am -
2 stops25h 03m
Deal found 9/18![Air Canada logo]()
$1,275
This Justfly.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/92:35 pm -
2 stops26h 00m
Fri 1/2211:50 am -
2 stops24h 45m
Deal found 9/16![Air New Zealand logo]()
$1,308
This Expedia deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/222:38 pm -
2 stops27h 57m
Mon 12/711:50 am -
2 stops29h 09m
Deal found 9/16![Air New Zealand logo]()
$1,309
This oojo deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:54 pm -
2 stops46h 41m
Wed 11/1811:50 am -
2 stops26h 07m
Deal found 9/19![Air New Zealand logo]()
$1,317
This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:54 pm -
2 stops46h 41m
Sun 11/1511:50 am -
2 stops28h 47m
Deal found 9/17![Air New Zealand logo]()
$1,318
This oojo deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/12:38 pm -
2 stops27h 57m
Sun 11/152:05 pm -
2 stops31h 21m
Deal found 9/21![Air New Zealand logo]()
$1,320
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/38:34 am -
2 stops32h 01m
Tue 11/107:25 pm -
2 stops42h 32m
Deal found 9/18![Air New Zealand logo]()
$1,326
This KAYAK deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:35 am -
2 stops34h 00m
Tue 1/199:55 am -
2 stops27h 24m
Deal found 9/16![Air New Zealand logo]()
$1,330
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:18 pm -
2 stops43h 17m
Sat 10/317:30 am -
2 stops36h 49m
Deal found 9/18![Air New Zealand logo]()
$1,336
This Flightnetwork deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/12:38 pm -
2 stops25h 57m
Sun 11/89:55 am -
2 stops28h 01m
Deal found 9/16![Air New Zealand logo]()
$1,337
This Mytrip deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:00 am -
2 stops34h 30m
Mon 10/2611:15 am -
2 stops34h 05m
Deal found 9/19![Multiple Airlines logo]()
$1,344
Best flights from Dulles Intl to SydneyDiscover carefully curated flight deals from Dulles Intl to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
Discover carefully curated flight deals from Dulles Intl to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
This Turkish Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/299:20 pm -
2 stops54h 05m
Thu 1/149:35 pm -
2 stops37h 50m
Deal found 9/20![Turkish Airlines logo]()
$1,507
This Alaska Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/226:39 pm -
3 stops33h 06m
Sat 12/59:40 pm -
3 stops35h 59m
Deal found 9/19![Multiple Airlines logo]()
$1,639
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:00 am -
2 stops34h 30m
Mon 12/1410:40 am -
2 stops29h 07m
Deal found 9/16![Delta logo]()
$1,874
This Emirates deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/610:30 am -
1 stop28h 30m
Fri 11/136:00 am -
1 stop42h 10m
Deal found 9/19![Emirates logo]()
$1,886
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2010:15 am -
2 stops30h 50m
Sat 11/289:10 am -
1 stop29h 34m
Deal found 9/18![United Airlines logo]()
$1,889
This Turkish Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:15 pm -
1 stop39h 05m
Fri 11/69:35 pm -
2 stops54h 10m
Deal found 9/21![Turkish Airlines logo]()
$1,535
This Turkish Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/89:20 pm -
2 stops54h 05m
Fri 2/129:35 pm -
2 stops54h 10m
Deal found 9/16![Turkish Airlines logo]()
$1,537
This Alaska Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:33 pm -
3 stops35h 12m
Fri 11/69:40 pm -
3 stops34h 34m
Deal found 9/18![Multiple Airlines logo]()
$1,728
This Turkish Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/61:30 pm -
2 stops37h 55m
Sat 12/129:35 pm -
2 stops54h 10m
Deal found 9/19![Turkish Airlines logo]()
$1,567
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:00 am -
2 stops44h 45m
Thu 12/249:40 pm -
3 stops36h 11m
Deal found 9/16![Multiple Airlines logo]()
$1,824
This Turkish Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/49:20 pm -
2 stops54h 05m
Sun 5/99:00 pm -
2 stops36h 50m
Deal found 9/17![Turkish Airlines logo]()
$1,570
Last-minute flights from Dulles Intl to SydneyDiscover last-minute flight deals from Dulles Intl to Sydney. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Sydney. Data last updated September 21, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/189:45 am -
2 stops31h 35m
Sun 10/2510:20 am -
2 stops25h 03m
Deal found 9/18![Air Canada logo]()
$1,401
This Mytrip deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:00 am -
2 stops34h 30m
Mon 10/2611:15 am -
2 stops34h 05m
Deal found 9/19![Multiple Airlines logo]()
$1,344
This Air Canada deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:45 am -
2 stops31h 35m
Fri 10/2310:20 am -
2 stops23h 40m
Deal found 9/17![Air Canada logo]()
$1,402
This oojo deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:15 am -
2 stops37h 20m
Fri 11/62:05 pm -
2 stops26h 35m
Deal found 9/21![Air New Zealand logo]()
$1,378
This Gotogate deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2311:00 pm -
1 stop42h 05m
Mon 10/2610:10 am -
1 stop48h 20m
Deal found 9/16![Air China logo]()
$1,389
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:18 pm -
2 stops43h 17m
Sat 10/317:30 am -
2 stops36h 49m
Deal found 9/18![Air New Zealand logo]()
$1,336
This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:15 pm -
2 stops27h 20m
Thu 11/511:50 am -
2 stops26h 07m
Deal found 9/17![Air New Zealand logo]()
$1,367
This Priceline deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:10 pm -
2 stops44h 25m
Sun 11/1511:20 am -
2 stops25h 03m
Deal found 9/17![Air Canada logo]()
$1,369
One-way flights from Dulles Intl to SydneySearch for one-way flight options from Dulles Intl to Sydney. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
Search for one-way flight options from Dulles Intl to Sydney. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/712:31 pm -
2 stops49h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$583
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:52 am -
2 stops31h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$601
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:00 am -
2 stops34h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$611
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
2 stops33h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$614
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:09 pm -
2 stops49h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$631
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:46 am -
2 stops30h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$633
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/275:38 pm -
3 stops58h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$671
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:35 pm -
3 stops54h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$696
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 September 21, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,259 (oojo) |
One-way from | $583 (Kiwi.com) |
Popular in | December |
Cheapest in | August |
Average price | $1,471 |
Cheapflights Fare Finder
Customize 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 7,457,451 searches. Data last updated September 21, 2026.
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
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Mon 10/26
7:02 am-9:35 am
2 stops35h 33m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$793
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Tue 2/23
6:10 am-9:35 am
2 stops35h 25m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$793
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Wed 3/10
6:10 am-9:35 am
2 stops35h 25m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$793
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Sun 11/8
6:00 am-9:50 am
2 stops35h 50m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$828
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Mon 10/12
1:15 pm-8:10 pm
2 stops39h 55m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$850
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Sat 2/20
5:50 pm-8:50 pm
2 stops35h 00m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$853
Quickest round-trip
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Thu 10/29
7:02 am-6:25 am
3 stops32h 23m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$857
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Thu 1/21
9:20 pm-7:25 pm
2 stops54h 05m
Sydney Kingsford Smith
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$862
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Tue 12/29
9:20 pm-7:25 pm
2 stops54h 05m
Sydney Kingsford Smith
Thu 1/14
9:35 pm-7:25 pm
2 stops37h 50m
$1,507
Washington, D.C.Sydney
IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith
IADSYD
Washington, D.C. Dulles Intl
Fri 10/23
1:15 pm-7:20 pm
1 stop39h 05m
Sydney Kingsford Smith
Fri 11/6
9:35 pm-11:45 am
2 stops54h 10m
$1,535
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl to Sydney
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Sydney in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Sydney flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Washington, D.C. Dulles Intl Airport-Sydney flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Sydney flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Sydney flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
IAD-SYD
Estimated round-trip 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?
To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Sydney, you should look to book at least 4 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 $1,196). Flying from Washington, D.C. Dulles Intl Airport to Sydney in December is currently the most expensive (average of $2,195). 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.
How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Sydney?
Airfare is below average for this route at the moment.
Washington, D.C. Dulles Intl Airport to Sydney flights typically cost between $1,413 and $1,944 in February.The cheapest round-trip price found within the last 5 days was $1,259 on Air New Zealand (Feb 28-Mar 10).
What’s the top layover airport for flights from Washington, D.C. Dulles Intl Airport to Sydney?
Share of 1-stop round-trip flights from Washington, D.C. Dulles Intl Airport to Sydney chosen by Cheapflights users in the past 12 months, using the same layover each way.
Los Angeles (LAX) – chosen by Cheapflights users on 80% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Sydney on Cheapflights.
What’s the cheapest layover airport for flights from Washington, D.C. Dulles Intl Airport to Sydney?
Average round-trip fare for 1-stop flights from Washington, D.C. Dulles Intl Airport to Sydney, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $379.
What’s the fastest layover option from Washington, D.C. Dulles Intl Airport to Sydney?
Shortest average travel time for 1-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 layover airport.
Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 9h 00m.
Which airport typically offers the quickest layover for flights from Washington, D.C. Dulles Intl Airport to Sydney?
Average layover duration for 1-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 Atlanta (ATL) offer the fastest connection on this route, with an average layover time of 1h 25m.
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 September 21, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Sydney, such as Air New Zealand,Qantas Airways, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.5
Comfort
7.9
Crew
8.5
Boarding
8.2
Entertainment
7.4
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Food
7.5
Comfort
7.9
Crew
8.5
Boarding
8.2
Entertainment
7.4
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Food
7.5
Comfort
7.9
Crew
8.5
Boarding
8.2
Entertainment
7.4
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Food
7.5
Comfort
7.9
Crew
8.5
Boarding
8.2
Entertainment
7.4
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Food
7.5
Comfort
7.9
Crew
8.5
Boarding
8.2
Entertainment
7.4
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Food
7.5
Comfort
7.9
Crew
8.5
Boarding
8.2
Entertainment
7.4
Overall
8.0
Reviews
1 / 20
6.0
GoodAnonymous,Aug 2026
FLL - IAH
Related info for your journey
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Top 5 airlines flying from Dulles Intl to Sydney
Discover the top 5 airlines 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 7,457,451 searches. Data last updated September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$357 | Average$1,793 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$852 | Average$1,288 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$973 | Average$1,408 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,105 | Average$1,598 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,281 | Average$1,432 | FlexibilityNo cancel fee | On-time78% |