฿34,155 Cheap Flights from Washington (IAD) to Sydney (SYD)

View ฿34,155 flight on Sun, 16 Aug 2026Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to Sydney Airport (SYD)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Washington (IAD) to Sydney (SYD)

Prices were available within the past 7 days and start at ฿34,155 for one-way flights and ฿59,260 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sat, 25 Apr - Fri, 8 May
IAD
Washington
SYD
Sydney
฿59,260 Return, found 6 days ago
฿59,260
Return
found 6 days ago
Select Air Canada flight, departing Sat, 25 Apr from Washington to Sydney, returning Fri, 8 May, priced at ฿59,260 found 6 days ago
Air Canada
Sat, 25 Apr - Fri, 8 May
IAD
Washington
SYD
Sydney
฿59,370 Return, found 6 days ago
฿59,370
Return
found 6 days ago
Select Air Canada flight, departing Sat, 25 Apr from Washington to Sydney, returning Fri, 8 May, priced at ฿59,370 found 6 days ago
Air Canada
Sat, 25 Apr - Fri, 8 May
IAD
Washington
SYD
Sydney
฿60,355 Return, found 6 days ago
฿60,355
Return
found 6 days ago
Select Air Canada flight, departing Sat, 25 Apr from Washington to Sydney, returning Fri, 8 May, priced at ฿60,355 found 6 days ago
Qatar Airways
Sat, 25 Apr - Fri, 8 May
IAD
Washington
SYD
Sydney
฿61,190 Return, found 6 days ago
฿61,190
Return
found 6 days ago
Select Qatar Airways flight, departing Sat, 25 Apr from Washington to Sydney, returning Fri, 8 May, priced at ฿61,190 found 6 days ago
Emirates
Sat, 25 Apr - Fri, 8 May
IAD
Washington
SYD
Sydney
฿62,980 Return, found 6 days ago
฿62,980
Return
found 6 days ago
Select Emirates flight, departing Sat, 25 Apr from Washington to Sydney, returning Fri, 8 May, priced at ฿62,980 found 6 days ago
Emirates
Sat, 25 Apr - Fri, 8 May
IAD
Washington
SYD
Sydney
฿66,440 Return, found 6 days ago
฿66,440
Return
found 6 days ago
Select Emirates flight, departing Sat, 25 Apr from Washington to Sydney, returning Fri, 8 May, priced at ฿66,440 found 6 days ago
Air New Zealand
Sat, 25 Apr - Fri, 8 May
IAD
Washington
SYD
Sydney
฿70,740 Return, found 6 days ago
฿70,740
Return
found 6 days ago
Select Air New Zealand flight, departing Sat, 25 Apr from Washington to Sydney, returning Fri, 8 May, priced at ฿70,740 found 6 days ago
Lufthansa
Sat, 25 Apr - Fri, 8 May
IAD
Washington
SYD
Sydney
฿150,770 Return, found 6 days ago
฿150,770
Return
found 6 days ago
Select Lufthansa flight, departing Sat, 25 Apr from Washington to Sydney, returning Fri, 8 May, priced at ฿150,770 found 6 days ago
Swiss International Air Lines
Sat, 25 Apr - Fri, 8 May
IAD
Washington
SYD
Sydney
฿228,255 Return, found 6 days ago
฿228,255
Return
found 6 days ago
Select Swiss International Air Lines flight, departing Sat, 25 Apr from Washington to Sydney, returning Fri, 8 May, priced at ฿228,255 found 6 days ago

Find the cheapest month to fly from Washington (IAD) to Sydney (SYD)

February is typically the cheapest month to fly

From ฿38,693 - ฿62,939 per traveller.

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 ฿59,260. 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.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Kingsford Smith Intl.
Return price
฿59,260
Distance
15590 km
*Available to Expedia members.