Which airports can I use when flying from Seattle to Adelaide?

Flights from Seattle to Adelaide usually depart from Seattle/Tacoma Intl (SEA) and arrive at Adelaide (ADL).

Which cabin classes can I book on flights from Seattle to Adelaide?

Only Economy class is available on flights from Seattle to Adelaide.

Can I save money by using flexible dates for flights from Seattle to Adelaide?

Yes. Being flexible with your travel dates can save you up to 39% on the Seattle to Adelaide route. Thursday is the cheapest departure day at $1,556 return on average, while Sunday is the most expensive at $2,527, a difference of $971. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Adelaide?

Some of the most popular sights in Adelaide are Adelaide Convention Centre, East End Cafe Precinct, and Adelaide Casino. These are among the most viewed places in Adelaide on KAYAK.

Do I need a passport to fly from Seattle to Adelaide?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Seattle to Adelaide changed much recently?

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about $1,514 to $7,754. That means the highest observed fare was about 5x higher than the lowest one.

How are flight prices from Seattle to Adelaide looking right now?

One-way fares from Seattle to Adelaide are currently lower than usual. Average one-way flight prices are about $893, which is 8% below the typical average for this route.

What is the time difference between Seattle and Adelaide?

Adelaide is 16 hours ahead of Seattle (Central Australia Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Which car hire options are available at Adelaide Airport (ADL)?

Adelaide Airport (ADL) hosts 5 major car hire companies, with daily rates starting from around $16 for economy cars. Top options include: • Bargain Car Rentals • Simba Car Hire • East Coast Car Rentals • Europcar • Budget

How much should I expect to pay for a Seattle to Adelaide flight?

Return flights from Seattle to Adelaide range from $1,556 to $1,988, with an average of $1,724 over the past 12 months. Anything below $1,556 counts as a good deal.

What is the cheapest airline to fly from Seattle to Adelaide?

Air Canada ($1,514) and Air New Zealand ($1,745) are the cheapest airlines to fly return from Seattle to Adelaide according to KAYAK data over the last 5 days.

$863 CHEAP FLIGHTS from Seattle to Adelaide (SEA - ADL)

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Cheapest return flight

$1,514

Typical prices: $1,556-$1,988

Air Canada

Fri 26/10Fri 2/11

SEA - ADL • 2 stops

Cheapest one-way flight

$840

Typical prices: $906-$981

Multiple Airlines

Wed 7/11

SEA - ADL • 2 stops

When to travel

March

Cheapest • 10% price drop

March

Most popular

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We hope you enjoy your trip to Adelaide!

Flight Deals

Cheap Flights from Seattle to Adelaide (SEA-ADL)

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

Recent return flight deals from Seattle to Adelaide

Mon, 26 Oct - Mon, 2 Nov

19:05 - 18:10SEA Seattle/Tacoma Intl-ADL Adelaide

29h 35m2 stops Vancouver Intl Sydney Kingsford Smith

06:10 - 14:37ADL Adelaide-SEA Seattle/Tacoma Intl

26h 57m2 stops Brisbane Vancouver Intl

$1,514Air Canada

Wed, 21 Oct - Sun, 25 Oct

19:15 - 14:20SEA Seattle/Tacoma Intl-ADL Adelaide

25h 35m2 stops Vancouver Intl Sydney Kingsford Smith

06:10 - 14:37ADL Adelaide-SEA Seattle/Tacoma Intl

25h 57m2 stops Brisbane Vancouver Intl

$1,630Multiple Airlines

Fri, 12 Feb - Sun, 21 Feb

19:05 - 21:45SEA Seattle/Tacoma Intl-ADL Adelaide

32h 10m2 stops Vancouver Intl Brisbane

06:10 - 09:27ADL Adelaide-SEA Seattle/Tacoma Intl

21h 47m2 stops Brisbane Vancouver Intl

$1,679Multiple Airlines

Sun, 14 Feb - Sat, 20 Feb

19:05 - 19:10SEA Seattle/Tacoma Intl-ADL Adelaide

29h 35m2 stops Vancouver Intl Sydney Kingsford Smith

06:10 - 09:32ADL Adelaide-SEA Seattle/Tacoma Intl

21h 52m2 stops Brisbane Vancouver Intl

$1,686Air Canada

Sun, 14 Feb - Sat, 20 Feb

19:05 - 19:10SEA Seattle/Tacoma Intl-ADL Adelaide

29h 35m2 stops Vancouver Intl Sydney Kingsford Smith

06:10 - 09:27ADL Adelaide-SEA Seattle/Tacoma Intl

21h 47m2 stops Brisbane Vancouver Intl

$1,687Air Canada

Thu, 29 Oct - Thu, 5 Nov

19:05 - 12:35SEA Seattle/Tacoma Intl-ADL Adelaide

24h 00m2 stops Vancouver Intl Sydney Kingsford Smith

06:10 - 09:32ADL Adelaide-SEA Seattle/Tacoma Intl

21h 52m2 stops Brisbane Vancouver Intl

$1,735Multiple Airlines

Thu, 11 Feb - Sat, 27 Feb

15:15 - 13:55SEA Seattle/Tacoma Intl-ADL Adelaide

28h 10m2 stops Vancouver Intl Sydney Kingsford Smith

06:10 - 18:22ADL Adelaide-SEA Seattle/Tacoma Intl

30h 42m2 stops Brisbane Vancouver Intl

$1,739Air Canada

Thu, 28 Jan - Sun, 7 Feb

20:51 - 10:55SEA Seattle/Tacoma Intl-ADL Adelaide

43h 34m2 stops Los Angeles Los Angeles Auckland Intl

12:05 - 16:47ADL Adelaide-SEA Seattle/Tacoma Intl

23h 12m2 stops Auckland Intl Los Angeles Los Angeles

$1,745Air New Zealand

Thu, 28 Jan - Sun, 7 Feb

16:30 - 10:55SEA Seattle/Tacoma Intl-ADL Adelaide

47h 55m2 stops Los Angeles Los Angeles Auckland Intl

12:05 - 21:56ADL Adelaide-SEA Seattle/Tacoma Intl

28h 21m2 stops Auckland Intl Los Angeles Los Angeles

$1,747Air New Zealand

Thu, 28 Jan - Sun, 7 Feb

10:45 - 09:30SEA Seattle/Tacoma Intl-ADL Adelaide

28h 15m1 stop San Francisco

19:55 - 11:40ADL Adelaide-SEA Seattle/Tacoma Intl

34h 15m2 stops Sydney Kingsford Smith Los Angeles Los Angeles

$1,823United Airlines

Booking Insights

Price, demand, and travel trends for Seattle to Adelaide flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Seattle to Adelaide with more confidence.

Prices

Airlines

How much is a return flight from Seattle to Adelaide?

Return flights from Seattle to Adelaide start at $1,514. Prices are below average for this route right now, with typical return fares ranging from $1,556 to $1,988. The lowest price found in the past 5 days was $1,514 on Air Canada.

What's the cheapest day of the week to fly from Seattle to Adelaide?

Thursday is the cheapest day of the week to fly from Seattle to Adelaide and is 10% cheaper than the average day. Sunday is the most expensive day with flight prices 46% higher than average. Based on deals found by KAYAK users in the last 12 months.

Find deals

Low season	October
High season	March
Cheapest flight	$840

Best time to beat the crowds but there is an average 2% increase in price.

Most popular time to fly and prices are also 10% lower on average.

Flights from Seattle to Adelaide

When to book flights from Seattle to Adelaide

Are your dates flexible? Find out the best times to travel from Seattle to Adelaide based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Seattle to Adelaide?
Flights from Seattle to Adelaide usually depart from Seattle/Tacoma Intl (SEA) and arrive at Adelaide (ADL).
Which cabin classes can I book on flights from Seattle to Adelaide?
Only Economy class is available on flights from Seattle to Adelaide.
Can I save money by using flexible dates for flights from Seattle to Adelaide?
Yes. Being flexible with your travel dates can save you up to 39% on the Seattle to Adelaide route. Thursday is the cheapest departure day at $1,556 return on average, while Sunday is the most expensive at $2,527, a difference of $971. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in Adelaide?
Some of the most popular sights in Adelaide are Adelaide Convention Centre, East End Cafe Precinct, and Adelaide Casino. These are among the most viewed places in Adelaide on KAYAK.
Do I need a passport to fly from Seattle to Adelaide?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from Seattle to Adelaide changed much recently?
Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about $1,514 to $7,754. That means the highest observed fare was about 5x higher than the lowest one.
How are flight prices from Seattle to Adelaide looking right now?
One-way fares from Seattle to Adelaide are currently lower than usual. Average one-way flight prices are about $893, which is 8% below the typical average for this route.
What is the time difference between Seattle and Adelaide?
Adelaide is 16 hours ahead of Seattle (Central Australia Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.
Which car hire options are available at Adelaide Airport (ADL)?
Adelaide Airport (ADL) hosts 5 major car hire companies, with daily rates starting from around $16 for economy cars. Top options include:
• Bargain Car Rentals
• Simba Car Hire
• East Coast Car Rentals
• Europcar
• Budget
How much should I expect to pay for a Seattle to Adelaide flight?
Return flights from Seattle to Adelaide range from $1,556 to $1,988, with an average of $1,724 over the past 12 months. Anything below $1,556 counts as a good deal.

If your dates are flexible, aim for a Thursday departure instead of Sunday. On this route, Thursday flights average $1,556 – about $971 less than Sunday (38% savings) based on the last 12 months.
If you can choose when to travel, plan your Seattle to Adelaide trip for March. Fares historically average $1,547 return in that month – typically $754 less than the most expensive month, which is November (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Adelaide Airport.
- Atura Adelaide Airport
- Lockleys Hotel

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SEA - ADL

$863 Find Cheap Flights from Seattle to Adelaide – Compare and Save

Everything you should know

Cheap Flights from Seattle to Adelaide (SEA-ADL)

Recent return flight deals from Seattle to Adelaide

Recent one-way flight deals from Seattle to Adelaide

Recent last minute flight deals from Seattle to Adelaide

Price, demand, and travel trends for Seattle to Adelaide flights

How much is a return flight from Seattle to Adelaide?

What's the cheapest day of the week to fly from Seattle to Adelaide?

What is the cheapest airline to fly from Seattle to Adelaide?

Key details for Seattle to Adelaide flights

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Cheapest flight

When to book flights from Seattle to Adelaide

Your Seattle to Adelaide flight questions, answered

Your guide to booking Seattle to Adelaide flights

More options for your flight from Seattle to Adelaide

Complete your trip to Adelaide with a hotel stay or car hire

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Cabin class types available on flights from Seattle to Adelaide

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