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Cheap flights from Seattle to Adelaide from $1,223

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Adelaide departing on 11/12. 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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0 bags

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Find the cheapest flights from Seattle to Adelaide

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:20 pm - 12:15 pm
SEA
-
ADL
25h 25m
2 stops
Multiple Airlines Logo
1:15 pm - 4:56 pm
ADL
-
SEA
22h 11m
2 stops
$1,223Multiple Airlines
Thu, Nov 12 - Sat, Dec 5
Qantas Airways Logo
5:55 pm - 1:40 pm
SEA
-
ADL
25h 15m
2 stops
Qantas Airways Logo
7:00 pm - 12:04 am
ADL
-
SEA
23h 34m
2 stops
$1,257Qantas Airways
Fri, Nov 13 - Sun, Dec 6
Multiple Airlines Logo
3:00 pm - 11:10 am
SEA
-
ADL
27h 40m
2 stops
Multiple Airlines Logo
7:00 pm - 10:07 am
ADL
-
SEA
31h 37m
2 stops
$1,297Multiple Airlines
Sun, Aug 2 - Sun, Aug 16
Air Canada Logo
3:00 pm - 11:10 am
SEA
-
ADL
27h 40m
2 stops
Air Canada Logo
7:00 pm - 10:07 am
ADL
-
SEA
31h 37m
2 stops
$1,303Air Canada
Mon, Aug 3 - Sun, Aug 16
Multiple Airlines Logo
4:15 pm - 10:55 am
SEA
-
ADL
48h 10m
2 stops
Multiple Airlines Logo
5:10 pm - 9:28 pm
ADL
-
SEA
22h 48m
2 stops
$1,341Multiple Airlines
Wed, Nov 4 - Sun, Nov 8
Multiple Airlines Logo
8:25 pm - 10:35 pm
SEA
-
ADL
33h 40m
2 stops
Multiple Airlines Logo
8:50 am - 11:59 pm
ADL
-
SEA
31h 39m
2 stops
$1,342Multiple Airlines
Thu, Jul 30 - Fri, Aug 14
Qantas Airways Logo
12:57 pm - 1:40 pm
SEA
-
ADL
30h 13m
2 stops
Qantas Airways Logo
7:00 pm - 12:04 am
ADL
-
SEA
23h 34m
2 stops
$1,365Qantas Airways
Thu, Nov 12 - Sun, Dec 6
Qantas Airways Logo
5:10 pm - 1:35 pm
SEA
-
ADL
27h 55m
2 stops
Qantas Airways Logo
6:00 am - 8:56 pm
ADL
-
SEA
31h 26m
2 stops
$1,366Qantas Airways
Wed, Aug 5 - Mon, Aug 17
Qantas Airways Logo
5:10 pm - 9:25 am
SEA
-
ADL
23h 45m
2 stops
Qantas Airways Logo
10:10 am - 8:56 pm
ADL
-
SEA
51h 16m
2 stops
$1,373Qantas Airways
Wed, Aug 5 - Sun, Aug 16
Qantas Airways Logo
5:10 pm - 3:45 pm
SEA
-
ADL
30h 05m
2 stops
Qantas Airways Logo
6:00 am - 11:29 pm
ADL
-
SEA
33h 59m
2 stops
$1,375Qantas Airways
Wed, Aug 5 - Sat, Aug 15

Qantas Airways flights from Seattle to Adelaide

Our best Qantas Airways deals on Seattle to Adelaide flight tickets
Qantas Airways
Nov 13
SEA5:55 pmSeattle/Tacoma Intl
25h 15m
2 stops
ADL1:40 pmAdelaide
Dec 6
ADL7:00 pmAdelaide
23h 34m
2 stops
SEA12:04 amSeattle/Tacoma Intl
$1,257
Qantas Airways
Nov 12
SEA12:57 pmSeattle/Tacoma Intl
30h 13m
2 stops
ADL1:40 pmAdelaide
Dec 6
ADL7:00 pmAdelaide
23h 34m
2 stops
SEA12:04 amSeattle/Tacoma Intl
$1,365
Qantas Airways
Aug 5
SEA5:10 pmSeattle/Tacoma Intl
27h 55m
2 stops
ADL1:35 pmAdelaide
Aug 17
ADL6:00 amAdelaide
31h 26m
2 stops
SEA8:56 pmSeattle/Tacoma Intl
$1,366

Air Canada flights from Seattle to Adelaide

Our best Air Canada deals on Seattle to Adelaide flight tickets
Air Canada
Aug 3
SEA3:00 pmSeattle/Tacoma Intl
27h 40m
2 stops
ADL11:10 amAdelaide
Aug 16
ADL7:00 pmAdelaide
31h 37m
2 stops
SEA10:07 amSeattle/Tacoma Intl
$1,303
Air Canada
Nov 13
SEA8:40 amSeattle/Tacoma Intl
34h 45m
2 stops
ADL1:55 pmAdelaide
Nov 30
ADL9:40 pmAdelaide
30h 07m
2 stops
SEA9:17 amSeattle/Tacoma Intl
$1,437
Air Canada
Nov 12
SEA3:15 pmSeattle/Tacoma Intl
30h 35m
2 stops
ADL4:20 pmAdelaide
Nov 30
ADL9:40 pmAdelaide
30h 07m
2 stops
SEA9:17 amSeattle/Tacoma Intl
$1,439

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated May 29, 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 round-trip
Quickest round-trip

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 11/12

4:20 pm-12:15 pm

2 stops25h 25m

Adelaide

Sat 12/5

1:15 pm-4:56 pm

2 stops22h 11m

$1,223

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 11/13

5:55 pm-1:40 pm

2 stops25h 15m

Adelaide

Sun 12/6

7:00 pm-12:04 am

2 stops23h 34m

$1,257

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 8/2

3:00 pm-11:10 am

2 stops27h 40m

Adelaide

Sun 8/16

7:00 pm-10:07 am

2 stops31h 37m

$1,297

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 8/3

3:00 pm-11:10 am

2 stops27h 40m

Adelaide

Sun 8/16

7:00 pm-10:07 am

2 stops31h 37m

$1,303

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 11/4

4:15 pm-10:55 am

2 stops48h 10m

Adelaide

Sun 11/8

5:10 pm-9:28 pm

2 stops22h 48m

$1,341

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 7/30

8:25 pm-10:35 pm

2 stops33h 40m

Adelaide

Fri 8/14

8:50 am-11:59 pm

2 stops31h 39m

$1,342

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 11/12

12:57 pm-1:40 pm

2 stops30h 13m

Adelaide

Sun 12/6

7:00 pm-12:04 am

2 stops23h 34m

$1,365

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 8/5

5:10 pm-1:35 pm

2 stops27h 55m

Adelaide

Mon 8/17

6:00 am-8:56 pm

2 stops31h 26m

$1,366

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 8/5

5:10 pm-9:25 am

2 stops23h 45m

Adelaide

Sun 8/16

10:10 am-8:56 pm

2 stops51h 16m

$1,373

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 8/5

5:10 pm-3:45 pm

2 stops30h 05m

Adelaide

Sat 8/15

6:00 am-11:29 pm

2 stops33h 59m

$1,375

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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

Can stopping save me money on Seattle to Adelaide flights?

You could potentially save up to 62% on your flight if you consider stops on a Seattle to Adelaide flight.

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 round-trip 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

Frequently asked questions about flying from Seattle to Adelaide

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

    A flight from Seattle/Tacoma Intl to Adelaide will travel around 8330.9 mi. Flights usually cover this in 22h 05m, depending on flying conditions and air traffic around both airports.

  • 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 are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Adelaide Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Adelaide Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. 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 travel and health documents required for your trip to Adelaide Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Adelaide Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Seattle to Adelaide?

Best airlines flying from Seattle to Adelaide

Compare and see reviews for airlines that fly from Seattle to Adelaide with momondo
Airline
Rating
Free Cancellation
Price
Qantas AirwaysPriceFrom $1,088Free CancellationRating
7.5
1,042 reviews
Search Qantas Airways flights

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 Seattle to Adelaide?

Finding the right flight to Adelaide from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Adelaide quick and easy, saving you time and money.

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

Flights from Seattle to Adelaide with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Adelaide from Seattle.

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

If you are not ready to book a flight from Seattle to Adelaide now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Adelaide and let you know when they change.

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