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Cheap flights from Seattle to Adelaide from $761

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Adelaide departing on 30/9. 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 Seattle to Adelaide

Cheap return flights

Enter your travel dates to find the best prices.
American Airlines Logo
14:20 - 09:25
SEA
-
ADL
26h 35m
2 stops
American Airlines Logo
07:50 - 16:32
ADL
-
SEA
25h 12m
2 stops
$1,667American Airlines
Sun, 2 Aug - Sun, 16 Aug
United Airlines Logo
10:29 - 11:10
SEA
-
ADL
32h 11m
2 stops
United Airlines Logo
06:05 - 21:15
ADL
-
SEA
31h 40m
3 stops
$1,683United Airlines
Sun, 2 Aug - Sun, 16 Aug
United Airlines Logo
10:29 - 11:10
SEA
-
ADL
32h 11m
2 stops
United Airlines Logo
06:05 - 21:15
ADL
-
SEA
31h 40m
3 stops
$1,684United Airlines
Sun, 2 Aug - Sun, 16 Aug
Multiple Airlines Logo
07:20 - 22:35
SEA
-
ADL
22h 45m
2 stops
Multiple Airlines Logo
12:40 - 23:53
ADL
-
SEA
27h 43m
2 stops
$1,815Multiple Airlines
Fri, 21 Aug - Sat, 5 Sep
Multiple Airlines Logo
07:20 - 22:35
SEA
-
ADL
22h 45m
2 stops
Multiple Airlines Logo
12:40 - 23:53
ADL
-
SEA
27h 43m
2 stops
$1,816Multiple Airlines
Fri, 21 Aug - Sat, 5 Sep
Qatar Airways Logo
16:25 - 15:00
SEA
-
ADL
30h 05m
1 stop
Qatar Airways Logo
22:00 - 12:45
ADL
-
SEA
31h 15m
1 stop
$1,863Qatar Airways
Fri, 21 Aug - Sat, 5 Sep
Qatar Airways Logo
16:25 - 15:00
SEA
-
ADL
30h 05m
1 stop
Qatar Airways Logo
22:00 - 12:45
ADL
-
SEA
31h 15m
1 stop
$1,865Qatar Airways
Fri, 21 Aug - Sat, 5 Sep
Qatar Airways Logo
16:25 - 15:00
SEA
-
ADL
30h 05m
1 stop
Qatar Airways Logo
22:00 - 12:45
ADL
-
SEA
31h 15m
1 stop
$1,892Qatar Airways
Fri, 21 Aug - Sat, 5 Sep
Qatar Airways Logo
21:25 - 15:00
SEA
-
ADL
49h 05m
2 stops
Qatar Airways Logo
22:00 - 12:45
ADL
-
SEA
31h 15m
1 stop
$1,932Qatar Airways
Fri, 21 Aug - Sat, 5 Sep
Qatar Airways Logo
21:25 - 15:00
SEA
-
ADL
49h 05m
2 stops
Qatar Airways Logo
22:00 - 12:45
ADL
-
SEA
31h 15m
1 stop
$1,975Qatar Airways
Fri, 21 Aug - Sat, 5 Sep

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Qantas Airways flights from Seattle to Adelaide

Our best Qantas Airways deals on Seattle to Adelaide flight tickets
Qantas Airways
20 Aug
SEA17:10Seattle/Tacoma Intl
23h 45m
2 stops
ADL09:25Adelaide
27 Aug
ADL06:00Adelaide
22h 50m
2 stops
SEA12:20Seattle/Tacoma Intl
$1,792
Qantas Airways
23 July
SEA18:10Seattle/Tacoma Intl
31h 45m
2 stops
ADL18:25Adelaide
17 Aug
ADL13:25Adelaide
39h 53m
2 stops
SEA12:48Seattle/Tacoma Intl
$2,180
Qantas Airways
23 July
SEA18:10Seattle/Tacoma Intl
35h 55m
2 stops
ADL22:35Adelaide
19 Aug
ADL13:25Adelaide
26h 04m
2 stops
SEA22:59Seattle/Tacoma Intl
$2,181

Qatar Airways flights from Seattle to Adelaide

Our best Qatar Airways deals on Seattle to Adelaide flight tickets
Qatar Airways
21 Aug
SEA16:25Seattle/Tacoma Intl
30h 05m
1 stop
ADL15:00Adelaide
5 Sept
ADL22:00Adelaide
31h 15m
1 stop
SEA12:45Seattle/Tacoma Intl
$1,863
Qatar Airways
21 Aug
SEA16:25Seattle/Tacoma Intl
30h 05m
1 stop
ADL15:00Adelaide
5 Sept
ADL22:00Adelaide
31h 15m
1 stop
SEA12:45Seattle/Tacoma Intl
$1,865
Qatar Airways
21 Aug
SEA16:25Seattle/Tacoma Intl
30h 05m
1 stop
ADL15:00Adelaide
5 Sept
ADL22:00Adelaide
31h 15m
1 stop
SEA12:45Seattle/Tacoma Intl
$1,892

momondo Fare Finder

 
Customise your flight search to find flights from Seattle 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 18 July 2026.
Use the filters below to find and compare flights from Seattle to Adelaide that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 2/8

14:20-09:25

2 stops26h 35m

Adelaide

Sun 16/8

07:50-16:32

2 stops25h 12m

$1,667

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 2/8

10:29-11:10

2 stops32h 11m

Adelaide

Sun 16/8

06:05-21:15

3 stops31h 40m

$1,683

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 2/8

10:29-11:10

2 stops32h 11m

Adelaide

Sun 16/8

06:05-21:15

3 stops31h 40m

$1,684
Fastest return journey

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 21/8

07:20-22:35

2 stops22h 45m

Adelaide

Sat 5/9

12:40-23:53

2 stops27h 43m

$1,815

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 21/8

07:20-22:35

2 stops22h 45m

Adelaide

Sat 5/9

12:40-23:53

2 stops27h 43m

$1,816

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 21/8

16:25-15:00

1 stop30h 05m

Adelaide

Sat 5/9

22:00-12:45

1 stop31h 15m

$1,863

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 21/8

16:25-15:00

1 stop30h 05m

Adelaide

Sat 5/9

22:00-12:45

1 stop31h 15m

$1,865

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 21/8

16:25-15:00

1 stop30h 05m

Adelaide

Sat 5/9

22:00-12:45

1 stop31h 15m

$1,892

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 21/8

21:25-15:00

2 stops49h 05m

Adelaide

Sat 5/9

22:00-12:45

1 stop31h 15m

$1,932

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 21/8

21:25-15:00

2 stops49h 05m

Adelaide

Sat 5/9

22:00-12:45

1 stop31h 15m

$1,975

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 Seattle 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 Seattle/Tacoma Intl to Adelaide?

Qatar Airways is the most popular carrier operating from Seattle/Tacoma Intl to Adelaide

When to book flights from Seattle to Adelaide

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Adelaide according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Seattle to Adelaide (SEA to ADL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Adelaide

Fastest flight time

24h 31m

Direct flights

None
The fastest flight from Seattle to Adelaide takes 24h 31m
There are no direct flights from Seattle to Adelaide. There are no popular flight routes from Seattle to Adelaide.
Search flight deals

Frequently asked questions about flying from Seattle to Adelaide

  • How far is Seattle/Tacoma Intl to Adelaide by plane?

    The distance between Seattle/Tacoma Intl and Adelaide is about 13407.3 km. Typically, this will take 24h 31m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Adelaide Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Adelaide Airport were last updated today.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport 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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport 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 Seattle to Adelaide?

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 Adelaide from Seattle.

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

Yes. momondo allows you to filter the results for Seattle to Adelaide flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Adelaide from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Seattle to Adelaide flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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