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Cheap flights from Seattle to Adelaide from $1,807

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Adelaide departing on 2/8. 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 Seattle to Adelaide

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
15:00 - 11:10
SEA
-
ADL
27h 40m
2 stops
Multiple Airlines Logo
19:00 - 10:07
ADL
-
SEA
31h 37m
2 stops
$1,807Multiple Airlines
Sun, 2 Aug - Sun, 16 Aug
Multiple Airlines Logo
15:00 - 11:10
SEA
-
ADL
27h 40m
2 stops
Multiple Airlines Logo
19:00 - 10:07
ADL
-
SEA
31h 37m
2 stops
$1,809Multiple Airlines
Sun, 2 Aug - Sun, 16 Aug
Air Canada Logo
15:00 - 11:10
SEA
-
ADL
27h 40m
2 stops
Air Canada Logo
19:00 - 10:07
ADL
-
SEA
31h 37m
2 stops
$1,817Air Canada
Mon, 3 Aug - Sun, 16 Aug
Multiple Airlines Logo
07:20 - 22:35
SEA
-
ADL
22h 45m
2 stops
Multiple Airlines Logo
19:10 - 21:29
ADL
-
SEA
42h 49m
2 stops
$1,823Multiple Airlines
Sat, 22 Aug - Wed, 2 Sep
Multiple Airlines Logo
07:20 - 22:35
SEA
-
ADL
22h 45m
2 stops
Multiple Airlines Logo
14:25 - 23:53
ADL
-
SEA
25h 58m
2 stops
$1,832Multiple Airlines
Fri, 21 Aug - Sat, 5 Sep
Multiple Airlines Logo
07:20 - 22:35
SEA
-
ADL
22h 45m
2 stops
Multiple Airlines Logo
11:50 - 23:53
ADL
-
SEA
28h 33m
2 stops
$1,846Multiple Airlines
Wed, 19 Aug - Sat, 5 Sep
Multiple Airlines Logo
20:25 - 22:35
SEA
-
ADL
33h 40m
2 stops
Multiple Airlines Logo
08:50 - 23:59
ADL
-
SEA
31h 39m
2 stops
$1,871Multiple Airlines
Thu, 30 Jul - Fri, 14 Aug
Multiple Airlines Logo
17:59 - 11:15
SEA
-
ADL
24h 46m
2 stops
Multiple Airlines Logo
14:00 - 23:21
ADL
-
SEA
25h 51m
2 stops
$1,884Multiple Airlines
Fri, 21 Aug - Tue, 1 Sep
Qantas Airways Logo
17:10 - 13:35
SEA
-
ADL
27h 55m
2 stops
Qantas Airways Logo
06:00 - 20:56
ADL
-
SEA
31h 26m
2 stops
$1,905Qantas Airways
Wed, 5 Aug - Mon, 17 Aug
Qantas Airways Logo
17:10 - 09:25
SEA
-
ADL
23h 45m
2 stops
Qantas Airways Logo
10:10 - 20:56
ADL
-
SEA
51h 16m
2 stops
$1,915Qantas Airways
Wed, 5 Aug - Sun, 16 Aug

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 35m
1 stop
ADL15:30Adelaide
1 Sept
ADL18:20Adelaide
34h 35m
2 stops
SEA12:25Seattle/Tacoma Intl
$2,175
Qatar Airways
2 Aug
SEA16:25Seattle/Tacoma Intl
30h 35m
1 stop
ADL15:30Adelaide
16 Aug
ADL18:20Adelaide
34h 35m
2 stops
SEA12:25Seattle/Tacoma Intl
$2,209
Qatar Airways
2 Aug
SEA16:25Seattle/Tacoma Intl
30h 35m
1 stop
ADL15:30Adelaide
16 Aug
ADL18:20Adelaide
34h 35m
2 stops
SEA12:25Seattle/Tacoma Intl
$2,210

United Airlines flights from Seattle to Adelaide

Our best United Airlines deals on Seattle to Adelaide flight tickets
United Airlines
4 Aug
SEA19:05Seattle/Tacoma Intl
23h 30m
2 stops
ADL11:05Adelaide
17 Aug
ADL06:40Adelaide
26h 04m
2 stops
SEA16:14Seattle/Tacoma Intl
$1,996
United Airlines
2 Aug
SEA10:29Seattle/Tacoma Intl
32h 11m
2 stops
ADL11:10Adelaide
16 Aug
ADL06:05Adelaide
31h 40m
3 stops
SEA21:15Seattle/Tacoma Intl
$1,998
United Airlines
2 Aug
SEA18:48Seattle/Tacoma Intl
23h 52m
2 stops
ADL11:10Adelaide
19 Aug
ADL06:05Adelaide
29h 39m
2 stops
SEA19:14Seattle/Tacoma Intl
$2,000

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 1 June 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

15:00-11:10

2 stops27h 40m

Adelaide

Sun 16/8

19:00-10:07

2 stops31h 37m

$1,807

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 2/8

15:00-11:10

2 stops27h 40m

Adelaide

Sun 16/8

19:00-10:07

2 stops31h 37m

$1,809

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 3/8

15:00-11:10

2 stops27h 40m

Adelaide

Sun 16/8

19:00-10:07

2 stops31h 37m

$1,817

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 22/8

07:20-22:35

2 stops22h 45m

Adelaide

Wed 2/9

19:10-21:29

2 stops42h 49m

$1,823
Fastest return journey

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 21/8

07:20-22:35

2 stops22h 45m

Adelaide

Sat 5/9

14:25-23:53

2 stops25h 58m

$1,832

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 19/8

07:20-22:35

2 stops22h 45m

Adelaide

Sat 5/9

11:50-23:53

2 stops28h 33m

$1,846

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 30/7

20:25-22:35

2 stops33h 40m

Adelaide

Fri 14/8

08:50-23:59

2 stops31h 39m

$1,871

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 21/8

17:59-11:15

2 stops24h 46m

Adelaide

Tue 1/9

14:00-23:21

2 stops25h 51m

$1,884

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 5/8

17:10-13:35

2 stops27h 55m

Adelaide

Mon 17/8

06:00-20:56

2 stops31h 26m

$1,905

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 5/8

17:10-09:25

2 stops23h 45m

Adelaide

Sun 16/8

10:10-20:56

2 stops51h 16m

$1,915

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

23h 30m

Direct flights

None
The fastest flight from Seattle to Adelaide takes 23h 30m
There are no direct flights from Seattle to Adelaide. There are no popular flight routes from Seattle to Adelaide.
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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 23h 30m 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.

Frequently asked questions about flying from Seattle to Adelaide

  • How do I get Price Alerts for flights from Seattle to Adelaide?

    Confirm your travel details to search for the latest offers for flights from Seattle to Adelaide. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Seattle to Adelaide with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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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