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Cheap flights from Seattle to Adelaide from $876

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 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.
1 adult

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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:00 - 11:15
SEA
-
ADL
22h 45m
2 stops
Multiple Airlines Logo
18:55 - 19:20
ADL
-
SEA
40h 55m
2 stops
$1,259Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
Air Canada Logo
19:20 - 13:55
SEA
-
ADL
26h 05m
2 stops
Air Canada Logo
18:55 - 18:32
ADL
-
SEA
40h 07m
2 stops
$1,268Air Canada
Mon, 18 May - Mon, 3 Aug
Multiple Airlines Logo
15:40 - 11:50
SEA
-
ADL
27h 40m
2 stops
Multiple Airlines Logo
17:15 - 09:38
ADL
-
SEA
32h 53m
2 stops
$1,314Multiple Airlines
Wed, 15 Apr - Wed, 22 Apr
Air Canada Logo
19:20 - 13:55
SEA
-
ADL
26h 05m
2 stops
Air Canada Logo
18:55 - 18:32
ADL
-
SEA
40h 07m
2 stops
$1,460Air Canada
Sun, 17 May - Tue, 4 Aug
Air Canada Logo
10:30 - 13:55
SEA
-
ADL
34h 55m
2 stops
Air Canada Logo
16:30 - 18:32
ADL
-
SEA
42h 32m
2 stops
$1,528Air Canada
Sun, 17 May - Wed, 5 Aug
Air Canada Logo
05:40 - 15:55
SEA
-
ADL
41h 45m
2 stops
Air Canada Logo
18:55 - 18:32
ADL
-
SEA
40h 07m
2 stops
$1,531Air Canada
Fri, 15 May - Mon, 3 Aug
Air Canada Logo
14:55 - 15:55
SEA
-
ADL
32h 30m
2 stops
Air Canada Logo
20:00 - 18:32
ADL
-
SEA
39h 02m
2 stops
$1,598Air Canada
Fri, 15 May - Wed, 5 Aug
Multiple Airlines Logo
19:20 - 13:55
SEA
-
ADL
26h 05m
2 stops
Multiple Airlines Logo
19:35 - 09:17
ADL
-
SEA
30h 12m
2 stops
$1,604Multiple Airlines
Mon, 6 Jul - Fri, 24 Jul
Air New Zealand Logo
13:21 - 10:55
SEA
-
ADL
29h 04m
2 stops
Air New Zealand Logo
12:05 - 18:32
ADL
-
SEA
22h 57m
2 stops
$1,678Air New Zealand
Mon, 18 May - Sun, 2 Aug
Qantas Airways Logo
18:40 - 19:05
SEA
-
ADL
31h 55m
2 stops
Qantas Airways Logo
20:05 - 22:01
ADL
-
SEA
42h 26m
2 stops
$1,713Qantas Airways
Sun, 17 May - Sun, 2 Aug

Qantas Airways flights from Seattle to Adelaide

Our best Qantas Airways deals on Seattle to Adelaide flight tickets
Qantas Airways
17 May
SEA18:40Seattle/Tacoma Intl
31h 55m
2 stops
ADL19:05Adelaide
2 Aug
ADL20:05Adelaide
42h 26m
2 stops
SEA22:01Seattle/Tacoma Intl
$1,713
Qantas Airways
17 May
SEA18:40Seattle/Tacoma Intl
31h 55m
2 stops
ADL19:05Adelaide
1 Aug
ADL17:10Adelaide
46h 15m
2 stops
SEA22:55Seattle/Tacoma Intl
$1,736
Qantas Airways
20 May
SEA16:28Seattle/Tacoma Intl
25h 22m
2 stops
ADL10:20Adelaide
31 July
ADL13:25Adelaide
25h 06m
2 stops
SEA22:01Seattle/Tacoma Intl
$1,748

United Airlines flights from Seattle to Adelaide

Our best United Airlines deals on Seattle to Adelaide flight tickets
United Airlines
15 Apr
SEA12:22Seattle/Tacoma Intl
29h 13m
2 stops
ADL10:05Adelaide
22 Apr
ADL06:05Adelaide
31h 31m
3 stops
SEA21:06Seattle/Tacoma Intl
$1,937
United Airlines
7 Mar
SEA12:36Seattle/Tacoma Intl
26h 24m
1 stop
ADL09:30Adelaide
11 Mar
ADL12:45Adelaide
40h 25m
2 stops
SEA11:40Seattle/Tacoma Intl
$2,058
United Airlines
7 Mar
SEA09:20Seattle/Tacoma Intl
29h 40m
1 stop
ADL09:30Adelaide
11 Mar
ADL12:45Adelaide
40h 25m
2 stops
SEA11:40Seattle/Tacoma Intl
$2,059

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 2 March 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

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Tue 14/4

20:00-11:15

2 stops22h 45m

Adelaide

Tue 21/4

18:55-19:20

2 stops40h 55m

$1,259

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 18/5

19:20-13:55

2 stops26h 05m

Adelaide

Mon 3/8

18:55-18:32

2 stops40h 07m

$1,268

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 15/4

15:40-11:50

2 stops27h 40m

Adelaide

Wed 22/4

17:15-09:38

2 stops32h 53m

$1,314

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 17/5

19:20-13:55

2 stops26h 05m

Adelaide

Tue 4/8

18:55-18:32

2 stops40h 07m

$1,460

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 17/5

10:30-13:55

2 stops34h 55m

Adelaide

Wed 5/8

16:30-18:32

2 stops42h 32m

$1,528

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 15/5

05:40-15:55

2 stops41h 45m

Adelaide

Mon 3/8

18:55-18:32

2 stops40h 07m

$1,531

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 15/5

14:55-15:55

2 stops32h 30m

Adelaide

Wed 5/8

20:00-18:32

2 stops39h 02m

$1,598

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 6/7

19:20-13:55

2 stops26h 05m

Adelaide

Fri 24/7

19:35-09:17

2 stops30h 12m

$1,604

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 18/5

13:21-10:55

2 stops29h 04m

Adelaide

Sun 2/8

12:05-18:32

2 stops22h 57m

$1,678

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 17/5

18:40-19:05

2 stops31h 55m

Adelaide

Sun 2/8

20:05-22:01

2 stops42h 26m

$1,713

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 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

22h 05m

Direct flights

None
The fastest flight from Seattle to Adelaide takes 22h 05m
There are no direct flights from Seattle to Adelaide. There are no popular flight routes from Seattle to Adelaide.
Search flight deals

  • 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 22h 05m 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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