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Cheap flights from Washington to Adelaide from $1,029

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 17/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:00 - 22:10
SEA
-
ADL
31h 40m
2 stops
Multiple Airlines Logo
19:45 - 18:16
ADL
-
SEA
41h 01m
2 stops
$1,364Multiple Airlines
Wed, 25 Feb - Sat, 7 Mar
Multiple Airlines Logo
20:00 - 13:55
SEA
-
ADL
23h 25m
2 stops
Multiple Airlines Logo
19:55 - 15:01
ADL
-
SEA
36h 36m
2 stops
$1,468Multiple Airlines
Thu, 5 Mar - Thu, 12 Mar
Air Canada Logo
19:20 - 13:55
SEA
-
ADL
26h 05m
2 stops
Air Canada Logo
20:00 - 09:15
ADL
-
SEA
29h 45m
2 stops
$1,475Air Canada
Thu, 7 May - Wed, 13 May
Air Canada Logo
10:20 - 13:55
SEA
-
ADL
34h 05m
2 stops
Air Canada Logo
21:20 - 19:18
ADL
-
SEA
38h 28m
2 stops
$1,483Air Canada
Sun, 29 Mar - Mon, 6 Apr
Air Canada Logo
05:40 - 11:50
SEA
-
ADL
37h 40m
2 stops
Air Canada Logo
21:20 - 09:15
ADL
-
SEA
28h 25m
2 stops
$1,486Air Canada
Mon, 4 May - Sun, 10 May
Air Canada Logo
20:00 - 13:55
SEA
-
ADL
23h 25m
2 stops
Air Canada Logo
06:10 - 09:35
ADL
-
SEA
20h 55m
2 stops
$1,489Air Canada
Thu, 5 Mar - Thu, 12 Mar
Air Canada Logo
15:00 - 13:55
SEA
-
ADL
30h 25m
2 stops
Air Canada Logo
20:00 - 14:20
ADL
-
SEA
34h 50m
2 stops
$1,490Air Canada
Wed, 6 May - Tue, 12 May
Air Canada Logo
19:20 - 11:50
SEA
-
ADL
24h 00m
2 stops
Air Canada Logo
20:00 - 14:20
ADL
-
SEA
34h 50m
2 stops
$1,493Air Canada
Mon, 4 May - Mon, 11 May
Air Canada Logo
09:55 - 11:50
SEA
-
ADL
33h 25m
2 stops
Air Canada Logo
18:55 - 14:20
ADL
-
SEA
35h 55m
2 stops
$1,495Air Canada
Mon, 4 May - Sat, 16 May
Multiple Airlines Logo
19:20 - 13:30
SEA
-
ADL
25h 40m
2 stops
Multiple Airlines Logo
19:40 - 09:17
ADL
-
SEA
30h 07m
2 stops
$1,513Multiple Airlines
Mon, 6 Jul - Fri, 24 Jul

Qantas Airways flights from State of Washington to Adelaide

Our best Qantas Airways deals on State of Washington to Adelaide flight tickets
Qantas Airways
11 Feb
SEA15:57Seattle/Tacoma Intl
27h 13m
2 stops
ADL13:40Adelaide
20 Feb
ADL12:35Adelaide
24h 52m
2 stops
SEA18:57Seattle/Tacoma Intl
$1,681
Qantas Airways
31 Mar
SEA06:00Seattle/Tacoma Intl
33h 55m
2 stops
ADL09:25Adelaide
7 Apr
ADL19:10Adelaide
34h 18m
2 stops
SEA12:58Seattle/Tacoma Intl
$1,726
Qantas Airways
31 Mar
SEA06:00Seattle/Tacoma Intl
34h 50m
2 stops
ADL10:20Adelaide
9 Apr
ADL20:00Adelaide
43h 28m
2 stops
SEA22:58Seattle/Tacoma Intl
$1,811

United Airlines flights from State of Washington to Adelaide

Our best United Airlines deals on State of Washington to Adelaide flight tickets
United Airlines
7 Mar
SEA09:20Seattle/Tacoma Intl
29h 40m
1 stop
ADL09:30Adelaide
14 Mar
ADL14:15Adelaide
21h 45m
1 stop
SEA18:30Seattle/Tacoma Intl
$1,737
United Airlines
25 Feb
SEA19:10Seattle/Tacoma Intl
43h 50m
2 stops
ADL09:30Adelaide
7 Mar
ADL14:55Adelaide
24h 33m
1 stop
SEA20:58Seattle/Tacoma Intl
$1,744
United Airlines
25 Feb
SEA08:17Seattle/Tacoma Intl
54h 43m
3 stops
ADL09:30Adelaide
14 Mar
ADL14:15Adelaide
24h 29m
2 stops
SEA21:14Seattle/Tacoma Intl
$1,782

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 8 February 2026.
Use the filters below to find and compare flights from Washington to Adelaide that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 25/2

20:00-22:10

2 stops31h 40m

Adelaide

Sat 7/3

19:45-18:16

2 stops41h 01m

$1,364

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 5/3

20:00-13:55

2 stops23h 25m

Adelaide

Thu 12/3

19:55-15:01

2 stops36h 36m

$1,468

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 7/5

19:20-13:55

2 stops26h 05m

Adelaide

Wed 13/5

20:00-09:15

2 stops29h 45m

$1,475

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 29/3

10:20-13:55

2 stops34h 05m

Adelaide

Mon 6/4

21:20-19:18

2 stops38h 28m

$1,483

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 4/5

05:40-11:50

2 stops37h 40m

Adelaide

Sun 10/5

21:20-09:15

2 stops28h 25m

$1,486

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 5/3

20:00-13:55

2 stops23h 25m

Adelaide

Thu 12/3

06:10-09:35

2 stops20h 55m

$1,489

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 6/5

15:00-13:55

2 stops30h 25m

Adelaide

Tue 12/5

20:00-14:20

2 stops34h 50m

$1,490

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 4/5

19:20-11:50

2 stops24h 00m

Adelaide

Mon 11/5

20:00-14:20

2 stops34h 50m

$1,493

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 4/5

09:55-11:50

2 stops33h 25m

Adelaide

Sat 16/5

18:55-14:20

2 stops35h 55m

$1,495

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 6/7

19:20-13:30

2 stops25h 40m

Adelaide

Fri 24/7

19:40-09:17

2 stops30h 07m

$1,513

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 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

What is the cheapest airline that flies from Washington to Adelaide?

Qantas Airways and Cathay Pacific are the most popular carriers operating from Washington to Adelaide

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

23h 23m

Direct flights

None
The fastest flight from State of Washington to Adelaide takes 23h 23m
There are no direct flights from State of Washington to Adelaide. There are no popular flight routes from State of Washington to Adelaide.
Search flight deals

  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check 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 licence 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.

Travelling 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?

momondo does allow users to show only those flights to Adelaide from Washington which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Adelaide from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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