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Cheap flights from Washington to Adelaide from $733

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Adelaide departing on 11/13. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Washington to Adelaide

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:45 pm - 11:50 amPDX  Portland-ADL Adelaide
23h 35m2 stops Vancouver Intl Sydney Kingsford Smith
Multiple Airlines Logo
4:30 pm - 7:11 pmADL  Adelaide-PDX Portland
43h 11m2 stops Sydney Kingsford Smith Vancouver Intl
$1,009Multiple Airlines
Sun, Aug 30 - Sat, Sep 26
Multiple Airlines Logo
7:45 pm - 11:50 amPDX  Portland-ADL Adelaide
23h 35m2 stops Vancouver Intl Sydney Kingsford Smith
Multiple Airlines Logo
9:20 pm - 7:11 pmADL  Adelaide-PDX Portland
38h 21m2 stops Brisbane Vancouver Intl
$1,041Multiple Airlines
Sun, Aug 30 - Fri, Sep 25
Multiple Airlines Logo
7:10 pm - 4:20 pmPDX  Portland-ADL Adelaide
26h 40m2 stops Vancouver Intl Brisbane
Multiple Airlines Logo
6:00 am - 9:26 amADL  Adelaide-PDX Portland
21h 56m2 stops Sydney Kingsford Smith Vancouver Intl
$1,052Multiple Airlines
Mon, Feb 1 - Sat, Feb 27
Air Canada Logo
3:30 pm - 11:50 amPDX  Portland-ADL Adelaide
27h 50m2 stops Vancouver Intl Sydney Kingsford Smith
Air Canada Logo
9:20 pm - 7:11 pmADL  Adelaide-PDX Portland
38h 21m2 stops Brisbane Vancouver Intl
$1,151Air Canada
Sun, Aug 30 - Sun, Sep 27
Air Canada Logo
7:10 pm - 6:10 pmPDX  Portland-ADL Adelaide
29h 30m2 stops Vancouver Intl Sydney Kingsford Smith
Air Canada Logo
6:10 am - 3:41 pmADL  Adelaide-PDX Portland
27h 01m2 stops Brisbane Vancouver Intl
$1,151Air Canada
Wed, Oct 28 - Sun, Nov 1
Air Canada Logo
7:10 pm - 6:10 pmPDX  Portland-ADL Adelaide
29h 30m2 stops Vancouver Intl Sydney Kingsford Smith
Air Canada Logo
6:10 am - 3:41 pmADL  Adelaide-PDX Portland
27h 01m2 stops Brisbane Vancouver Intl
$1,152Air Canada
Wed, Oct 28 - Sun, Nov 1
Air Canada Logo
7:45 pm - 11:50 amPDX  Portland-ADL Adelaide
23h 35m2 stops Vancouver Intl Sydney Kingsford Smith
Air Canada Logo
7:00 pm - 9:31 amADL  Adelaide-PDX Portland
31h 01m2 stops Sydney Kingsford Smith Vancouver Intl
$1,156Air Canada
Sun, Aug 30 - Mon, Sep 28
Air Canada Logo
7:45 pm - 11:50 amPDX  Portland-ADL Adelaide
23h 35m2 stops Vancouver Intl Sydney Kingsford Smith
Air Canada Logo
8:00 pm - 2:46 pmADL  Adelaide-PDX Portland
35h 16m2 stops Sydney Kingsford Smith Vancouver Intl
$1,156Air Canada
Sun, Aug 30 - Tue, Sep 22
Multiple Airlines Logo
7:45 pm - 1:30 pmPDX  Portland-ADL Adelaide
25h 15m2 stops Vancouver Intl Brisbane
Multiple Airlines Logo
8:00 pm - 9:31 amADL  Adelaide-PDX Portland
30h 01m2 stops Sydney Kingsford Smith Vancouver Intl
$1,177Multiple Airlines
Fri, Sep 25 - Fri, Oct 2
Multiple Airlines Logo
7:45 pm - 11:50 amPDX  Portland-ADL Adelaide
23h 35m2 stops Vancouver Intl Sydney Kingsford Smith
Multiple Airlines Logo
7:00 pm - 9:31 amADL  Adelaide-PDX Portland
31h 01m2 stops Sydney Kingsford Smith Vancouver Intl
$1,201Multiple Airlines
Sun, Aug 30 - Thu, Sep 24

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Qantas Airways flights from State of Washington to Adelaide

Our best Qantas Airways deals on State of Washington to Adelaide flight tickets
Qantas Airways
Sep 29
SEA5:02 pmSeattle/Tacoma Intl
26h 23m
2 stops
ADL11:55 amAdelaide
Oct 5
ADL5:10 pmAdelaide
36h 36m
2 stops
SEA12:16 pmSeattle/Tacoma Intl
$1,351
Qantas Airways
Sep 30
SEA4:59 pmSeattle/Tacoma Intl
33h 36m
2 stops
ADL7:05 pmAdelaide
Oct 6
ADL7:10 pmAdelaide
44h 57m
2 stops
SEA10:37 pmSeattle/Tacoma Intl
$1,570
Qantas Airways
Sep 30
PDX6:30 amPortland
36h 55m
2 stops
ADL11:55 amAdelaide
Oct 6
ADL2:20 pmAdelaide
49h 59m
2 stops
PDX10:49 pmPortland
$1,578

Cathay Pacific flights from State of Washington to Adelaide

Our best Cathay Pacific deals on State of Washington to Adelaide flight tickets
Cathay Pacific
Aug 21
SEA7:18 amSeattle/Tacoma Intl
37h 47m
3 stops
ADL1:35 pmAdelaide
Sep 5
ADL7:45 pmAdelaide
42h 24m
3 stops
SEA9:39 pmSeattle/Tacoma Intl
$2,111
Cathay Pacific
Aug 21
SEA6:49 amSeattle/Tacoma Intl
38h 16m
3 stops
ADL1:35 pmAdelaide
Sep 5
ADL8:50 amAdelaide
42h 36m
3 stops
SEA10:56 amSeattle/Tacoma Intl
$2,113
Cathay Pacific
Aug 21
SEA7:18 amSeattle/Tacoma Intl
42h 37m
3 stops
ADL6:25 pmAdelaide
Sep 5
ADL6:00 amAdelaide
42h 38m
3 stops
SEA8:08 amSeattle/Tacoma Intl
$2,120

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Adelaide 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 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Washington to Adelaide that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Sun 8/30

7:45 pm-11:50 am

2 stops23h 35m

Adelaide

Sat 9/26

4:30 pm-7:11 pm

2 stops43h 11m

$1,009

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Sun 8/30

7:45 pm-11:50 am

2 stops23h 35m

Adelaide

Fri 9/25

9:20 pm-7:11 pm

2 stops38h 21m

$1,041
Quickest round-trip

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Mon 2/1

7:10 pm-4:20 pm

2 stops26h 40m

Adelaide

Sat 2/27

6:00 am-9:26 am

2 stops21h 56m

$1,052

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Sun 8/30

3:30 pm-11:50 am

2 stops27h 50m

Adelaide

Sun 9/27

9:20 pm-7:11 pm

2 stops38h 21m

$1,151

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Wed 10/28

7:10 pm-6:10 pm

2 stops29h 30m

Adelaide

Sun 11/1

6:10 am-3:41 pm

2 stops27h 01m

$1,151

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Wed 10/28

7:10 pm-6:10 pm

2 stops29h 30m

Adelaide

Sun 11/1

6:10 am-3:41 pm

2 stops27h 01m

$1,152

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Sun 8/30

7:45 pm-11:50 am

2 stops23h 35m

Adelaide

Mon 9/28

7:00 pm-9:31 am

2 stops31h 01m

$1,156

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Sun 8/30

7:45 pm-11:50 am

2 stops23h 35m

Adelaide

Tue 9/22

8:00 pm-2:46 pm

2 stops35h 16m

$1,156

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Fri 9/25

7:45 pm-1:30 pm

2 stops25h 15m

Adelaide

Fri 10/2

8:00 pm-9:31 am

2 stops30h 01m

$1,177

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Sun 8/30

7:45 pm-11:50 am

2 stops23h 35m

Adelaide

Thu 9/24

7:00 pm-9:31 am

2 stops31h 01m

$1,201

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Adelaide from

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

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

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

You could potentially save up to 41% on your flight if you consider stops on a State of Washington to Adelaide flight.

Cheap State of Washington to Adelaide flight deals and tips

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

Fastest flight time

22h 45m

Direct flights

None
The fastest flight from State of Washington to Adelaide takes 22h 45m
There are no direct flights from State of Washington to Adelaide. There are no popular flight routes from State of Washington to Adelaide.
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Frequently asked questions about flying from Washington to Adelaide

  • When did momondo last update prices for flights from Washington to Adelaide Airport?

    Prices for flights from Washington to Adelaide Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Adelaide Airport.

  • What documentation or ID do you need to fly to Adelaide Airport?

    The necessary travel and health documents for your Adelaide Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Adelaide. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Adelaide from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Adelaide.

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

Yes. momondo can track prices for Washington to Adelaide 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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