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?

As of October 2025, there is 1 operator available to choose from 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.

$1,073 Cheap Flights from Seattle to Adelaide in 2025/26

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Find the cheapest flights from Seattle to Adelaide

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:00 am - 6:15 amSEA-ADL

48h 45m2 stops

7:05 pm - 9:00 amADL-SEA

32h 25m2 stops

$1,083Multiple Airlines

Find Deal

mié., nov. 26 - mié., dic. 3

7:00 am - 8:15 amSEA-ADL

30h 45m2 stops

5:10 pm - 9:02 pmADL-SEA

22h 22m2 stops

$1,307Multiple Airlines

Find Deal

sáb., ene. 31 - dom., feb. 8

7:00 am - 8:15 amSEA-ADL

30h 45m2 stops

7:55 pm - 5:15 amADL-SEA

51h 50m2 stops

$1,339Multiple Airlines

Find Deal

lun., nov. 24 - mié., dic. 10

6:10 am - 11:15 amSEA-ADL

35h 35m2 stops

5:05 pm - 10:36 pmADL-SEA

47h 01m2 stops

$1,426Qantas Airways

Find Deal

dom., mar. 29 - sáb., abr. 4

4:47 pm - 11:50 amSEA-ADL

24h 33m2 stops

11:40 am - 5:28 pmADL-SEA

24h 18m2 stops

$1,463Qantas Airways

Find Deal

lun., nov. 24 - mié., dic. 10

3:40 pm - 1:55 pmSEA-ADL

28h 45m2 stops

6:10 am - 3:01 pmADL-SEA

26h 21m2 stops

$1,523Air Canada

Find Deal

dom., mar. 15 - jue., mar. 19

7:32 pm - 1:45 pmSEA-ADL

24h 43m2 stops

7:00 pm - 1:23 pmADL-SEA

35h 53m3 stops

$1,535United Airlines

Find Deal

dom., mar. 29 - sáb., abr. 4

4:30 pm - 4:50 pmSEA-ADL

30h 50m1 stop

10:40 pm - 12:45 pmADL-SEA

31h 35m1 stop

$1,545Qatar Airways

Find Deal

dom., mar. 29 - sáb., abr. 4

8:10 am - 1:55 pmSEA-ADL

59h 15m3 stops

6:10 am - 4:29 pmADL-SEA

28h 49m2 stops

$1,556United Airlines

Find Deal

sáb., ene. 31 - dom., feb. 8

8:05 am - 4:50 pmSEA-ADL

39h 15m2 stops

10:40 pm - 12:45 pmADL-SEA

31h 35m1 stop

$1,591Qatar Airways

Find Deal

dom., mar. 29 - sáb., abr. 4

Qantas Airways flights from Seattle to Adelaide

Our best Qantas Airways deals on Seattle to Adelaide flight tickets

Qantas Airways

Mar 29

SEA6:10 amSeattle/Tacoma Intl

35h 35m

2 stops

ADL11:15 amAdelaide

Apr 4

ADL5:05 pmAdelaide

47h 01m

2 stops

SEA10:36 pmSeattle/Tacoma Intl

$1,426

Find similar

Qantas Airways

Nov 24

SEA4:47 pmSeattle/Tacoma Intl

24h 33m

2 stops

ADL11:50 amAdelaide

Dec 10

ADL11:40 amAdelaide

24h 18m

2 stops

SEA5:28 pmSeattle/Tacoma Intl

$1,463

Find similar

United Airlines flights from Seattle to Adelaide

Our best United Airlines deals on Seattle to Adelaide flight tickets

United Airlines

Mar 29

SEA7:32 pmSeattle/Tacoma Intl

24h 43m

2 stops

ADL1:45 pmAdelaide

Apr 4

ADL7:00 pmAdelaide

35h 53m

3 stops

SEA1:23 pmSeattle/Tacoma Intl

$1,535

Find similar

United Airlines

Jan 31

SEA8:10 amSeattle/Tacoma Intl

59h 15m

3 stops

ADL1:55 pmAdelaide

Feb 8

ADL6:10 amAdelaide

28h 49m

2 stops

SEA4:29 pmSeattle/Tacoma Intl

$1,556

Find similar

United Airlines

Jan 31

SEA5:10 pmSeattle/Tacoma Intl

21h 50m

1 stop

ADL9:30 amAdelaide

Feb 8

ADL6:10 amAdelaide

28h 04m

2 stops

SEA3:44 pmSeattle/Tacoma Intl

$1,559

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

mié. 11/26

11:00 am-6:15 am

2 stops48h 45m

Adelaide

mié. 12/3

7:05 pm-9:00 am

2 stops32h 25m

$1,083

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

sáb. 1/31

7:00 am-8:15 am

2 stops30h 45m

Adelaide

dom. 2/8

5:10 pm-9:02 pm

2 stops22h 22m

$1,307

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

lun. 11/24

7:00 am-8:15 am

2 stops30h 45m

Adelaide

mié. 12/10

7:55 pm-5:15 am

2 stops51h 50m

$1,339

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

dom. 3/29

6:10 am-11:15 am

2 stops35h 35m

Adelaide

sáb. 4/4

5:05 pm-10:36 pm

2 stops47h 01m

$1,426

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

lun. 11/24

4:47 pm-11:50 am

2 stops24h 33m

Adelaide

mié. 12/10

11:40 am-5:28 pm

2 stops24h 18m

$1,463

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

dom. 3/15

3:40 pm-1:55 pm

2 stops28h 45m

Adelaide

jue. 3/19

6:10 am-3:01 pm

2 stops26h 21m

$1,523

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

dom. 3/29

7:32 pm-1:45 pm

2 stops24h 43m

Adelaide

sáb. 4/4

7:00 pm-1:23 pm

3 stops35h 53m

$1,535

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

dom. 3/29

4:30 pm-4:50 pm

1 stop30h 50m

Adelaide

sáb. 4/4

10:40 pm-12:45 pm

1 stop31h 35m

$1,545

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

sáb. 1/31

8:10 am-1:55 pm

3 stops59h 15m

Adelaide

dom. 2/8

6:10 am-4:29 pm

2 stops28h 49m

$1,556

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

dom. 3/29

8:05 am-4:50 pm

2 stops39h 15m

Adelaide

sáb. 4/4

10:40 pm-12:45 pm

1 stop31h 35m

$1,591

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 day to depart on your flight to Adelaide?

The cheapest day to depart on your flight to Adelaide is on a Wednesday when prices can be found for as low as $1,293. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Adelaide is Friday, with ticket prices averaging around $1,570.

What is the cheapest time of day to depart on your flight to Adelaide?

According to our data, the cheapest time of day to fly to Adelaide is in the morning. momondo users have found flights departing from Seattle to Adelaide in the morning for as low as $1,161. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Adelaide are more costly in the afternoon, with an average ticket price of $1,555. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights	None

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?
A flight from Seattle/Tacoma Intl to Adelaide will travel around 8330.9 mi. Flights usually cover this in 21h 50m, 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?
As of October 2025, there is 1 operator available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from Seattle to Adelaide is Qantas Airways, representing 100% of all bookings.

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 Airways	PriceFrom $1,088	Free Cancellation	Rating 7.5 917 reviews		Search Qantas Airways flights

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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.