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.

Which airports do connecting flights from Seattle to Adelaide pass through?

Most connecting flights from Seattle to Adelaide pass through San Francisco (SFO), which handles 100% of one-stop traffic on this route.

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

Yes. Flexible dates can save you up to 51% on flights from Seattle to Adelaide. Tuesday is the cheapest departure day at $1,730 return on average, while Friday is the most expensive at $3,472, a difference of $1,743. KAYAK's flexible dates feature shows options up to three 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, Adelaide Casino, and Victoria Park. These are among the most viewed places in Adelaide on KAYAK.

How long is a flight from Seattle to Adelaide?

A direct flight from Seattle to Adelaide takes 00m, covering 21,580 km.

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 $1,754 to $14,103. That means the highest observed fare was about 8x 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 higher than usual. Average one-way flight prices are about $1,057, which is 6% above the typical average for this route.

What is the time difference between Seattle and Adelaide?

Adelaide is 18 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 averaging $59 for economy cars. Top options include: • Bargain Car Rentals • Simba Car Hire • East Coast Car Rentals • Europcar • Thrifty

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

Return flights from Seattle to Adelaide range from $1,730 to $2,066, with an average of $1,772 over the past 12 months. Anything below $1,730 counts as a good deal.

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

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Seattle to Adelaide. It's 3% cheaper than the average day, while Friday is the most expensive, with prices 95% higher.

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

Cathay Pacific ($1,928) and Alaska Airlines ($2,012) are the cheapest airlines to fly return from Seattle to Adelaide according to KAYAK data over the last 5 days.

What is the cheapest stopover airport when flying from Seattle to Adelaide?

Flights via San Francisco (SFO) offer the most affordable fares, with an average return price of $3,617. Based on KAYAK data over the past 3 months.

When flying from Seattle to Adelaide, which airport offers the shortest stopover?

San Francisco (SFO) had the shortest average connection time for Seattle to Adelaide stopovers at 13h 12m over the past 3 months.

$889 CHEAP FLIGHTS from Seattle to Adelaide (SEA - ADL)

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Never overpay with our price tracking tools.

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Cheapest return flight

$1,754

Typical prices: $1,730-$2,066

Multiple Airlines

Wed 5/12Wed 12/12

SEA - ADL • 2 stops

Cheapest one-way flight

$889

Typical prices: $928-$1,071

Multiple Airlines

Tue 8/5

SEA - ADL • 2 stops

Direct flights

Not available

There are currently no direct flights between Seattle and Adelaide. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

March

Cheapest • 19% price drop

January

Most popular

Good to know

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KAYAK searches hundreds of sites at once to find you the best travel deals.

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

Recent return flight deals from Seattle to Adelaide

Sat, 5 Dec - Sat, 12 Dec

13:36 - 12:15SEA Seattle/Tacoma Intl-ADL Adelaide

28h 09m2 stops San Francisco Nadi

13:15 - 18:13ADL Adelaide-SEA Seattle/Tacoma Intl

23h 28m2 stops Nadi San Francisco

$1,754Multiple Airlines

Wed, 24 Feb - Sun, 28 Feb

15:32 - 10:55SEA Seattle/Tacoma Intl-ADL Adelaide

24h 53m2 stops San Francisco Auckland Intl

12:05 - 17:47ADL Adelaide-SEA Seattle/Tacoma Intl

24h 12m2 stops Auckland Intl Los Angeles

$1,779Multiple Airlines

Fri, 19 Feb - Sun, 28 Feb

15:50 - 10:55SEA Seattle/Tacoma Intl-ADL Adelaide

24h 35m2 stops Vancouver Intl Auckland Intl

12:05 - 17:47ADL Adelaide-SEA Seattle/Tacoma Intl

24h 12m2 stops Auckland Intl Los Angeles

$1,844Multiple Airlines

Thu, 26 Nov - Mon, 7 Dec

15:46 - 12:15SEA Seattle/Tacoma Intl-ADL Adelaide

25h 59m2 stops Los Angeles Nadi

13:15 - 17:55ADL Adelaide-SEA Seattle/Tacoma Intl

23h 10m2 stops Nadi Los Angeles

$1,922Multiple Airlines

Wed, 24 Feb - Sun, 28 Feb

10:25 - 10:30SEA Seattle/Tacoma Intl-ADL Adelaide

29h 35m1 stop Hong Kong Intl

12:00 - 08:45ADL Adelaide-SEA Seattle/Tacoma Intl

39h 15m1 stop Hong Kong Intl

$1,928Cathay Pacific

Wed, 24 Feb - Sun, 28 Feb

10:25 - 10:30SEA Seattle/Tacoma Intl-ADL Adelaide

29h 35m1 stop Hong Kong Intl

12:00 - 11:51ADL Adelaide-SEA Seattle/Tacoma Intl

42h 21m2 stops Hong Kong Intl Los Angeles

$1,943Multiple Airlines

Sun, 14 Feb - Mon, 22 Mar

13:35 - 13:45SEA Seattle/Tacoma Intl-ADL Adelaide

29h 40m2 stops San Francisco Sydney Kingsford Smith

19:10 - 11:52ADL Adelaide-SEA Seattle/Tacoma Intl

34h 12m2 stops Sydney Kingsford Smith Los Angeles

$2,012Alaska Airlines

Fri, 12 Feb - Sun, 21 Feb

10:03 - 10:30SEA Seattle/Tacoma Intl-ADL Adelaide

29h 57m2 stops Vancouver Intl Hong Kong Intl

12:00 - 08:45ADL Adelaide-SEA Seattle/Tacoma Intl

39h 15m1 stop Hong Kong Intl

$2,022Cathay Pacific

Mon, 23 Nov - Tue, 8 Dec

10:25 - 10:30SEA Seattle/Tacoma Intl-ADL Adelaide

29h 35m1 stop Hong Kong Intl

07:15 - 12:18ADL Adelaide-SEA Seattle/Tacoma Intl

23h 33m2 stops Melbourne San Francisco

$2,057Multiple Airlines

Fri, 19 Feb - Sun, 28 Feb

06:05 - 10:30SEA Seattle/Tacoma Intl-ADL Adelaide

33h 55m2 stops Los Angeles Hong Kong Intl

12:00 - 08:45ADL Adelaide-SEA Seattle/Tacoma Intl

39h 15m1 stop Hong Kong Intl

$2,061Multiple 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 with more confidence.

Prices

Airlines

Stopovers

What's the cheapest day of the week to fly from Seattle to Adelaide?: Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Seattle to Adelaide. It's 3% cheaper than the average day, while Friday is the most expensive, with prices 95% higher.

Find deals

Low season	June
High season	January
Cheapest flight	$889

Beat the crowds with an average 75% drop in travellers.

The most popular month to fly with an average 33% increase in travellers.

One-way flight 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 cabin classes can I book on flights from Seattle to Adelaide?
Only Economy class is available on flights from Seattle to Adelaide.
How long is a flight from Seattle to Adelaide?
A direct flight from Seattle to Adelaide takes 00m, covering 21,580 km.
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.
How much should I expect to pay for a Seattle to Adelaide flight?
Return flights from Seattle to Adelaide range from $1,730 to $2,066, with an average of $1,772 over the past 12 months. Anything below $1,730 counts as a good deal.
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 $1,754 to $14,103. That means the highest observed fare was about 8x 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 higher than usual. Average one-way flight prices are about $1,057, which is 6% above the typical average for this route.
Which car hire options are available at Adelaide Airport (ADL)?
Adelaide Airport (ADL) hosts 5 major car hire companies, with daily rates averaging $59 for economy cars. Top options include:

• Bargain Car Rentals
• Simba Car Hire
• East Coast Car Rentals
• Europcar
• Thrifty
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 airports do connecting flights from Seattle to Adelaide pass through?
Most connecting flights from Seattle to Adelaide pass through San Francisco (SFO), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from Seattle to Adelaide?
Yes. Flexible dates can save you up to 51% on flights from Seattle to Adelaide. Tuesday is the cheapest departure day at $1,730 return on average, while Friday is the most expensive at $3,472, a difference of $1,743.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.
What is the time difference between Seattle and Adelaide?
Adelaide is 18 hours ahead of Seattle (Central Australia Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Adelaide?
Some of the most popular sights in Adelaide are Adelaide Convention Centre, Adelaide Casino, and Victoria Park. These are among the most viewed places in Adelaide on KAYAK.

If your dates are flexible, aim for a Tuesday departure and avoid flying on Friday. On this route, Tuesday flights average $1,730, about $1,743 less than Friday fares (50% 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 $1,438 return in that month – typically $2,140 less than the most expensive month, which is December (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

$889 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

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

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

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

What is the cheapest stopover airport when flying from Seattle to Adelaide?

When flying from Seattle to Adelaide, which airport offers the shortest stopover?

Key details for Seattle to Adelaide flights

Low season

High season

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

Information on your arrival and departure airports

Cabin class types available on flights from Seattle to Adelaide

Find direct flights to and from Seattle and Adelaide

Flights from domestic origins to Adelaide

Flights to other popular destinations

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