Cheap flights from Australia to Washington from $647

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Australia to Washington departing on 15/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Australia to Washington

Recent return flight deals from Australia to Washington

Air Canada Logo
10:20 - 09:21SYD-SEA
17h 01m1 stop
Air Canada Logo
05:50 - 08:35SEA-SYD
32h 45m1 stop
$1,134Air Canada
Find Deal
Fri, 10 Oct - Sun, 26 Oct
Air Canada Logo
10:20 - 19:16SYD-SEA
26h 56m1 stop
Air Canada Logo
10:05 - 09:35SEA-SYD
28h 30m1 stop
$1,137Air Canada
Find Deal
Sun, 26 Oct - Tue, 11 Nov
Qantas Airways Logo
10:10 - 20:07SYD-SEA
27h 57m1 stop
Qantas Airways Logo
17:30 - 09:00SEA-SYD
20h 30m1 stop
$1,232Qantas Airways
Find Deal
Fri, 24 Oct - Sun, 2 Nov
United Airlines Logo
11:20 - 12:02SYD-SEA
18h 42m1 stop
United Airlines Logo
17:07 - 09:05SEA-SYD
21h 58m1 stop
$1,268United Airlines
Find Deal
Fri, 10 Oct - Sun, 26 Oct
United Airlines Logo
12:00 - 18:36MEL-PDX
24h 36m1 stop
United Airlines Logo
12:55 - 09:30PDX-MEL
25h 35m2 stops
$1,276United Airlines
Find Deal
Mon, 27 Oct - Mon, 17 Nov
Qantas Airways Logo
18:45 - 20:07SYD-SEA
19h 22m1 stop
Qantas Airways Logo
14:40 - 07:30SEA-SYD
22h 50m1 stop
$1,277Qantas Airways
Find Deal
Tue, 14 Oct - Tue, 21 Oct
Virgin Australia Logo
12:00 - 22:51MEL-PDX
28h 51m1 stop
Virgin Australia Logo
13:00 - 10:00PDX-MEL
26h 00m1 stop
$1,571Virgin Australia
Find Deal
Mon, 27 Oct - Mon, 17 Nov
Virgin Australia Logo
14:55 - 15:44ADL-SEA
19h 19m1 stop
Virgin Australia Logo
17:10 - 22:30SEA-ADL
34h 50m2 stops
$1,685Virgin Australia
Find Deal
Sat, 17 Jan - Tue, 10 Feb
Singapore Airlines Logo
05:40 - 07:10PER-SEA
64h 30m1 stop
Singapore Airlines Logo
08:45 - 05:25SEA-PER
28h 40m1 stop
$1,850Singapore Airlines
Find Deal
Sun, 2 Nov - Sun, 9 Nov
Singapore Airlines Logo
10:15 - 08:10ADL-SEA
39h 25m1 stop
Singapore Airlines Logo
09:45 - 08:50SEA-ADL
29h 35m1 stop
$1,920Singapore Airlines
Find Deal
Wed, 11 Mar - Sun, 15 Mar

Air Canada flights from Australia to State of Washington

Our best Air Canada deals on Australia to State of Washington flight tickets
Air Canada
10 Oct
SYD10:20Sydney Kingsford Smith
17h 01m
1 stop
SEA09:21Seattle/Tacoma Intl
26 Oct
SEA05:50Seattle/Tacoma Intl
32h 45m
1 stop
SYD08:35Sydney Kingsford Smith
Air Canada
26 Oct
SYD10:20Sydney Kingsford Smith
26h 56m
1 stop
SEA19:16Seattle/Tacoma Intl
11 Nov
SEA10:05Seattle/Tacoma Intl
28h 30m
1 stop
SYD09:35Sydney Kingsford Smith
Air Canada
17 Oct
SYD10:20Sydney Kingsford Smith
17h 01m
1 stop
SEA09:21Seattle/Tacoma Intl
26 Oct
SEA15:40Seattle/Tacoma Intl
22h 55m
1 stop
SYD08:35Sydney Kingsford Smith

United Airlines flights from Australia to State of Washington

Our best United Airlines deals on Australia to State of Washington flight tickets
United Airlines
10 Oct
SYD11:20Sydney Kingsford Smith
18h 42m
1 stop
SEA12:02Seattle/Tacoma Intl
26 Oct
SEA17:07Seattle/Tacoma Intl
21h 58m
1 stop
SYD09:05Sydney Kingsford Smith
United Airlines
2 Oct
MEL10:55Melbourne
31h 04m
1 stop
SEA00:59Seattle/Tacoma Intl
17 Oct
SEA06:35Seattle/Tacoma Intl
31h 55m
1 stop
MEL08:30Melbourne
United Airlines
20 Oct
MEL11:55Melbourne
18h 07m
1 stop
SEA12:02Seattle/Tacoma Intl
13 Nov
SEA08:36Seattle/Tacoma Intl
30h 24m
2 stops
MEL10:00Melbourne

momondo Fare Finder

 
Customise your flight search to find flights from Australia to State of Washington 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, momondo users made 78,305 searches. Data last updated 19 September 2025.
Use the filters below to find and compare flights from Australia to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 10/10

10:20-09:21

1 stop17h 01m

Seattle/Tacoma Intl

Sun 26/10

05:50-08:35

1 stop32h 45m

$1,134

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 26/10

10:20-19:16

1 stop26h 56m

Seattle/Tacoma Intl

Tue 11/11

10:05-09:35

1 stop28h 30m

$1,137

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 24/10

10:10-20:07

1 stop27h 57m

Seattle/Tacoma Intl

Sun 2/11

17:30-09:00

1 stop20h 30m

$1,232

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 10/10

11:20-12:02

1 stop18h 42m

Seattle/Tacoma Intl

Sun 26/10

17:07-09:05

1 stop21h 58m

$1,268

MelbournePortland

MEL - PDX

MELPDX

Melbourne

Mon 27/10

12:00-18:36

1 stop24h 36m

Portland

Mon 17/11

12:55-09:30

2 stops25h 35m

$1,276

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 14/10

18:45-20:07

1 stop19h 22m

Seattle/Tacoma Intl

Tue 21/10

14:40-07:30

1 stop22h 50m

$1,277

MelbournePortland

MEL - PDX

MELPDX

Melbourne

Mon 27/10

12:00-22:51

1 stop28h 51m

Portland

Mon 17/11

13:00-10:00

1 stop26h 00m

$1,571

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Sat 17/1

14:55-15:44

1 stop19h 19m

Seattle/Tacoma Intl

Tue 10/2

17:10-22:30

2 stops34h 50m

$1,685

PerthSeattle

PER - SEA

PERSEA

Perth

Sun 2/11

05:40-07:10

1 stop64h 30m

Seattle/Tacoma Intl

Sun 9/11

08:45-05:25

1 stop28h 40m

$1,850

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 11/3

10:15-08:10

1 stop39h 25m

Seattle/Tacoma Intl

Sun 15/3

09:45-08:50

1 stop29h 35m

$1,920

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Australia to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to State of Washington?

The month of August is, on average, the cheapest month to fly to State of Washington from Australia, with most prices found around $1,421. If you aren’t able to travel during the month of August, then book flights to State of Washington from Australia during February instead. Flights to State of Washington in February, while not as cheap as those in August, still average around $1,489.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart on your flight to State of Washington is on a Thursday when prices can be found for as low as $1,551. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to State of Washington on Sunday is $1,783.

What is the cheapest time of day to depart on your flight to State of Washington?

At midday is the cheapest time of day to fly from Australia to State of Washington when you can find flight prices for as low as $1,478. Flying to State of Washington at midday is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive, with an average ticket price of $1,804.

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $1,668 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Australia for as low as $1,348 on momondo.

Can stopping save me money on Australia to State of Washington flights?

You could potentially save up to 9% on your flight if you consider stops on a Australia to State of Washington flight.

Cheap Australia to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Australia to State of Washington

Direct flights

None
There are no direct flights from Australia to State of Washington. There are no popular flight routes from Australia to State of Washington.
  • When did momondo last update prices for flights from Australia to Washington?

    Prices for flights from Australia to Washington are updated daily.

  • How many operators does momondo search for flights from Australia to Washington?

  • How old do you have to be to fly from Australia to Washington?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Australia to Washington.

  • What documentation or ID do you need to fly to Washington?

    The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Australia to State of Washington

Compare and see reviews for airlines that fly from Australia to State of Washington with momondo
Airline
Rating
Free cancellation
Price
Alaska AirlinesPriceFrom $346Free cancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Air New ZealandPriceFrom $925Free cancellationRating
8.0
505 reviews
Search Air New Zealand flights
American AirlinesPriceFrom $981Free cancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $994Free cancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $1,145Free cancellationRating
7.9
7,964 reviews
Search Delta flights
Air CanadaPriceFrom $1,153Free cancellationRating
7.1
10,000 reviews
Search Air Canada flights
Qantas AirwaysPriceFrom $1,196Free cancellationRating
7.5
907 reviews
Search Qantas Airways flights
Hawaiian AirlinesPriceFrom $1,224Free cancellationRating
7.8
2,732 reviews
Search Hawaiian Airlines flights
Philippine AirlinesPriceFrom $1,244Free cancellationRating
7.2
911 reviews
Search Philippine Airlines flights
EVA AirPriceFrom $1,299Free cancellationRating
8.4
1,237 reviews
Search EVA Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Australia to Washington?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington from Australia.

Can I find flights from Australia to Washington with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington from Australia with this policy.

How can momondo help me find flights from Australia to Washington?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington from Australia.

I’m not ready to book a flight from Australia to Washington right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Australia to Washington flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
Sun 19/10
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