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Cheap flights from Washington to Sydney from $582

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 31/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
27 Feb — 6 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Washington to Sydney
Explore the most affordable flight options available from Washington to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 January 2026.

Thu 10/917:47
GEG
-
SYD
1 stop20h 18m
Multiple Airlines
Thu 17/917:50
SYD
-
GEG
1 stop21h 35m
Multiple Airlines
Deal found 26/1$1,389
Sun 1/1107:00
GEG
-
SYD
1 stop29h 25m
Multiple Airlines
Sat 21/1117:45
SYD
-
GEG
1 stop23h 40m
Multiple Airlines
Deal found 27/1$1,393
Tue 3/315:45
GEG
-
SYD
1 stop19h 25m
Qantas Airways
Tue 10/313:05
SYD
-
GEG
1 stop21h 49m
Qantas Airways
Deal found 26/1$1,395
Fri 3/713:07
GEG
-
SYD
1 stop24h 48m
Qantas Airways
Tue 7/712:00
SYD
-
GEG
1 stop25h 47m
Qantas Airways
Deal found 27/1$1,396
Sun 1/1105:25
GEG
-
SYD
1 stop30h 30m
American Airlines
Sat 21/1114:05
SYD
-
GEG
1 stop25h 50m
American Airlines
Deal found 26/1$1,398
Tue 10/216:59
GEG
-
SYD
1 stop18h 11m
Multiple Airlines
Fri 13/214:05
SYD
-
GEG
1 stop26h 07m
Multiple Airlines
Deal found 28/1$1,399
Tue 16/613:07
GEG
-
SYD
1 stop24h 48m
American Airlines
Wed 24/612:00
SYD
-
GEG
1 stop25h 47m
American Airlines
Deal found 27/1$1,400
Mon 23/217:39
PDX
-
SYD
2 stops44h 31m
Qantas Airways
Mon 2/311:20
SYD
-
PDX
1 stop24h 53m
Qantas Airways
Deal found 26/1$1,403
Tue 3/306:00
GEG
-
SYD
1 stop29h 55m
American Airlines
Tue 10/317:45
SYD
-
GEG
2 stops23h 29m
American Airlines
Deal found 25/1$1,405
Fri 3/715:00
GEG
-
SYD
2 stops23h 30m
American Airlines
Tue 7/717:50
SYD
-
GEG
2 stops22h 16m
American Airlines
Deal found 27/1$1,406
Fri 20/213:20
GEG
-
SYD
2 stops24h 10m
Delta
Fri 6/310:40
SYD
-
GEG
1 stop29h 38m
Delta
Deal found 27/1$1,415
Tue 3/306:25
GEG
-
SYD
1 stop29h 25m
Delta
Tue 10/313:15
SYD
-
GEG
1 stop26h 05m
Delta
Deal found 27/1$1,422

Find flight deals from Washington to Sydney

Keep the following information in mind while searching for Washington to Sydney flight deals. Data was last updated 28 January 2026.

Round-trip from

$1,395

One-way from

$582

Popular in

December

Cheapest in

August

Average price

$1,857
Qantas Airways
  • Qantas Airways
  • 3/3-10/3
  • 2 total stops
  • 41h 14m total
  • Washington to Sydney
Search Deals
31/3
  • 31/3
  • 2 total stops
  • 24h 21m total
  • Washington to Sydney
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($414 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($101 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington 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 28 January 2026.
Use the filters below to find and compare flights from Washington to Sydney that are best for you.

Fly from

Washington

Fly to

Sydney

Route

Depart

Return

Price

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

15:45-06:10

1 stop19h 25m

Sydney Kingsford Smith

Tue 10/3

13:05-16:54

1 stop21h 49m

$1,395

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 10/2

16:59-06:10

1 stop18h 11m

Sydney Kingsford Smith

Fri 13/2

14:05-21:12

1 stop26h 07m

$1,399

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 21/3

15:10-09:00

2 stops23h 50m

Sydney Kingsford Smith

Tue 31/3

18:50-23:14

2 stops22h 24m

$1,403

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 10/2

06:00-06:55

1 stop29h 55m

Sydney Kingsford Smith

Fri 13/2

17:45-23:14

2 stops24h 29m

$1,406

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 16/6

15:00-07:30

2 stops23h 30m

Sydney Kingsford Smith

Wed 24/6

12:00-20:47

1 stop25h 47m

$1,406

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 3/7

15:00-07:30

2 stops23h 30m

Sydney Kingsford Smith

Tue 7/7

12:00-20:47

1 stop25h 47m

$1,406

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 20/2

13:20-08:30

2 stops24h 10m

Sydney Kingsford Smith

Fri 6/3

10:40-21:18

1 stop29h 38m

$1,415

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

06:25-06:50

1 stop29h 25m

Sydney Kingsford Smith

Tue 10/3

13:15-21:20

1 stop26h 05m

$1,422

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 22/2

21:30-07:25

1 stop38h 55m

Sydney Kingsford Smith

Sun 8/3

14:00-10:52

2 stops39h 52m

$1,431

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 5/5

14:50-06:25

1 stop22h 35m

Sydney Kingsford Smith

Tue 12/5

06:25-13:26

2 stops24h 01m

$1,445

Flights are sorted by cheapest return flights first.

Deals found on 27/1

Showing 1-10 of 53 results
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Best time to book a flight from Washington to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Washington 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 to Sydney

What is the cheapest month to book a flight from State of Washington to Sydney?

Currently, July is the cheapest month in which you can book a flight from State of Washington to Sydney (average of $738). Flying from State of Washington to Sydney in December is currently the most expensive (average of $1,216). 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.

Related info for your journey

Find useful and relevant information for your journey from Washington 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?

    Most people fly into Sydney Kingsford Smith (SYD) if they book a flight to Sydney from Washington. Kingsford Smith is conveniently located just 7.5 km from Sydney’s city centre.

  • How long is the flight from State of Washington to Sydney?

    There are many flights that can get you from State of Washington to Sydney in 17h 50m. Fly via Qantas Airways, American Airlines, or Alaska Airlines to get the fastest option. The distance between State of Washington and Sydney is about 12463 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from State of Washington to Sydney one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $507. However, be on the lookout for offers from ANA and Qantas Airways, as they are both options that can get you from State of Washington to Sydney for a low price.

  • What are the most popular routes from State of Washington to Sydney?

    When deciding which route to take from State of Washington to Sydney, consider Seattle/Tacoma Intl - Sydney Kingsford Smith, Portland - Sydney Kingsford Smith or Spokane - Sydney Kingsford Smith, as they are the most popular.

  • Can I find deals for flights from Washington to Sydney that include hotel bookings?

    Yes. In addition to deals on Washington to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Washington to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Sydney.

  • Can I find deals for business class flights from Washington to Sydney?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Sydney?

    Currently, July is the cheapest month in which you can book a flight from State of Washington to Sydney (average of $738). Flying from State of Washington to Sydney in December is currently the most expensive (average of $1,216). 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.

See more FAQs

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Penrith
Manly
Katoomba
Terrigal
Lithgow
Leura
Coogee
Cronulla
Randwick
Bondi Beach

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Alternative routes for Washington to Sydney

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Top 2 airlines flying from Washington to Sydney

Discover the top 2 airlines that operate flights from Washington 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 28 January 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,150Average$2,084FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,211Average$1,704FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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 Washington to Sydney?

Deals for Washington to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Washington to Sydney?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sydney from Washington.

Can Cheapflights find flights from Washington to Sydney with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington to Sydney, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Washington to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Washington to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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