S$1,127 Cheap Flights from Washington to Sydney

View S$1,127 flight on Thu, 4 Dec, 2025Opens 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 S$1,127 for one-way flights and S$2,185 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 4 Jun - Wed, 11 Jun
IAD
Washington
SYD
Sydney
S$2,185 Return, found 4 days ago
S$2,185
Return
found 4 days ago
Select American Airlines flight, departing Wed, 4 Jun from Washington to Sydney, returning Wed, 11 Jun, priced at S$2,185 found 4 days ago
American Airlines
Wed, 4 Jun - Wed, 11 Jun
IAD
Washington
SYD
Sydney
S$2,197 Return, found 4 days ago
S$2,197
Return
found 4 days ago
Select American Airlines flight, departing Wed, 4 Jun from Washington to Sydney, returning Wed, 11 Jun, priced at S$2,197 found 4 days ago
American Airlines
Wed, 4 Jun - Wed, 11 Jun
IAD
Washington
SYD
Sydney
S$2,210 Return, found 4 days ago
S$2,210
Return
found 4 days ago
Select American Airlines flight, departing Wed, 4 Jun from Washington to Sydney, returning Wed, 11 Jun, priced at S$2,210 found 4 days ago
Qantas Airways
Wed, 4 Jun - Wed, 11 Jun
IAD
Washington
SYD
Sydney
S$2,211 Return, found 4 days ago
S$2,211
Return
found 4 days ago
Select Qantas Airways flight, departing Wed, 4 Jun from Washington to Sydney, returning Wed, 11 Jun, priced at S$2,211 found 4 days ago
United
Wed, 4 Jun - Wed, 11 Jun
IAD
Washington
SYD
Sydney
S$2,230 Return, found 4 days ago
S$2,230
Return
found 4 days ago
Select United flight, departing Wed, 4 Jun from Washington to Sydney, returning Wed, 11 Jun, priced at S$2,230 found 4 days ago
Delta
Wed, 4 Jun - Wed, 11 Jun
IAD
Washington
SYD
Sydney
S$2,242 Return, found 4 days ago
S$2,242
Return
found 4 days ago
Select Delta flight, departing Wed, 4 Jun from Washington to Sydney, returning Wed, 11 Jun, priced at S$2,242 found 4 days ago
American Airlines
Sat, 7 Jun - Sat, 14 Jun
IAD
Washington
SYD
Sydney
S$2,314 Return, found 1 day ago
S$2,314
Return
found 1 day ago
Select American Airlines flight, departing Sat, 7 Jun from Washington to Sydney, returning Sat, 14 Jun, priced at S$2,314 found 1 day ago
American Airlines
Sat, 7 Jun - Sat, 14 Jun
IAD
Washington
SYD
Sydney
S$2,327 Return, found 1 day ago
S$2,327
Return
found 1 day ago
Select American Airlines flight, departing Sat, 7 Jun from Washington to Sydney, returning Sat, 14 Jun, priced at S$2,327 found 1 day ago
United
Sat, 7 Jun - Sat, 14 Jun
IAD
Washington
SYD
Sydney
S$2,347 Return, found 1 day ago
S$2,347
Return
found 1 day ago
Select United flight, departing Sat, 7 Jun from Washington to Sydney, returning Sat, 14 Jun, priced at S$2,347 found 1 day ago
Air New Zealand
Wed, 4 Jun - Wed, 11 Jun
IAD
Washington
SYD
Sydney
S$2,370 Return, found 4 days ago
S$2,370
Return
found 4 days ago
Select Air New Zealand flight, departing Wed, 4 Jun from Washington to Sydney, returning Wed, 11 Jun, priced at S$2,370 found 4 days ago

Frequently asked questions

How much is a flight from IAD to Kingsford Smith Intl. Airport (SYD)?
Round-trip tickets from Washington Dulles Intl. Airport (IAD) to Kingsford Smith Intl. Airport (SYD) start from S$2,185. This price is based on fares offered within the last 7 days on Expedia for flights departing within the next year — book ASAP so you don’t miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to Kingsford Smith Intl. Airport (SYD)?
This can differ between air carriers, as each has its own set of terms and conditions. Head to the Customer Service Portal, where you’ll find instructions on how to cancel online.
How do I find cheap flights from IAD to SYD that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Dulles Intl. Airport to Mascot Airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from IAD to Kingsford Smith Intl. Airport (SYD)?
The distance is around 15,700 kilometres. Eye mask? Check. Warm clothes? Check. You’d be wise to pack all the essentials for this long-haul Chantilly to Sydney flight.
Which airlines fly direct from Dulles Intl. Airport to Sydney Airport?
There are no direct flights, so you’ll need to make at least one stop between Dulles Intl. Airport and Mascot Airport. Use the layover time to stretch your legs and take a break.
Are Washington Dulles Intl. Airport (IAD) to Mascot Airport flight tickets cheaper when they're purchased at the last minute?
Booking your trip from IAD to SYD at the last minute could be your ticket to a cheap deal. However, you might miss out on a flight altogether! If you’d prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains as far ahead as 12 months in advance. If your preferred carrier hasn’t released tickets yet, check back frequently as deals are updated all the time on Expedia.
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