How long is the flight from Adelaide to Seattle?

Air Canada and Cathay Pacific can get you from Adelaide to Seattle in just under 21h 47m. Your travel time can differ by up to 23h 23m. There are 13409 km between Adelaide and Seattle. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest time of day to fly from ADL to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Adelaide to Seattle as you normally would.

Can I find deals for flights from Adelaide to Seattle that include hotel bookings?

Yes. In addition to deals on Adelaide to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Adelaide to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Adelaide to Seattle.

Can I find deals for business class flights from Adelaide to Seattle?

Yes. Cheapflights offers flight deals from Adelaide to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$1,069+ Cheap Flights from Adelaide to Seattle

Cheap flight deals from Adelaide to Seattle

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Adelaide to Seattle
Explore the most affordable flight options available from Adelaide to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 September 2026.

Tue 24/1106:10 -

2 stops21h 47m

Tue 15/1210:10 -

2 stops30h 15m

Deal found 26/9$1,663

Sun 8/1119:55 -

2 stops32h 07m

Sun 15/1119:05 -

2 stops26h 45m

Deal found 24/9$1,750

Sun 8/1117:50 -

3 stops34h 12m

Sun 15/1119:05 -

2 stops26h 45m

Deal found 24/9$1,774

Thu 3/1217:20 -

2 stops22h 35m

Sun 6/1218:20 -

2 stops43h 20m

Deal found 24/9$1,838

Fri 13/1106:10 -

2 stops30h 42m

Wed 18/1110:10 -

2 stops41h 50m

Deal found 22/9$1,842

Sat 24/1014:25 -

2 stops25h 42m

Sat 31/1016:20 -

2 stops27h 55m

Deal found 21/9$1,895

Sun 8/1118:35 -

1 stop55h 00m

Sun 15/1108:40 -

2 stops35h 00m

Deal found 24/9$1,970

Fri 13/1112:00 -

1 stop39h 15m

Wed 18/1110:25 -

1 stop29h 35m

Deal found 22/9$1,972

Find flight deals from Adelaide to Seattle

Round-trip from	$1,663
One-way from	$1,069
Popular in	May
Cheapest in	July
Average price	$2,017

Air Canada
24/11-15/12
4 total stops
52h 02m total
Adelaide to Seattle

Search Deals

Air Canada
8/2-31/12
2 total stops
34h 17m total
Adelaide to Seattle

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($201 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($82 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Mon 8/2

06:10-21:57

2 stops34h 17m

Seattle/Tacoma Intl

Wed 31/12

00:00-17:30

Nonstop0h 00m

$1,069

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Mon 8/2

07:50-08:45

2 stops43h 25m

Seattle/Tacoma Intl

Wed 31/12

00:00-17:30

Nonstop0h 00m

$1,150

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Mon 8/2

14:55-20:42

3 stops72h 17m

Seattle/Tacoma Intl

Wed 31/12

00:00-17:30

Nonstop0h 00m

$1,200

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

06:10-09:27

2 stops21h 47m

Seattle/Tacoma Intl

Tue 15/12

10:10-10:55

2 stops30h 15m

$1,663

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Sun 8/11

17:50-09:32

3 stops34h 12m

Seattle/Tacoma Intl

Sun 15/11

19:05-16:20

2 stops26h 45m

$1,774

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Sun 3/1

06:00-21:57

3 stops58h 27m

Seattle/Tacoma Intl

Wed 31/12

00:00-17:30

Nonstop0h 00m

$1,989

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Fri 13/11

06:05-08:45

2 stops45h 10m

Seattle/Tacoma Intl

Wed 18/11

10:25-10:30

1 stop29h 35m

$2,050

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

17:20-20:20

2 stops21h 30m

Seattle/Tacoma Intl

Tue 15/12

09:30-08:10

2 stops52h 10m

$2,383

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 8/12

08:40-20:47

2 stops30h 37m

Seattle/Tacoma Intl

Fri 18/12

05:00-09:30

2 stops58h 00m

$2,610

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Sun 3/1

12:00-08:45

1 stop39h 15m

Seattle/Tacoma Intl

Wed 31/12

00:00-17:30

Nonstop0h 00m

$2,625

Flights are sorted by cheapest return flights first.

Deals found on 25/9

Showing 1-10 of 13 resultsSorted by cheapest first

Best time to book a flight from Adelaide to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Adelaide with our price prediction graph.

ADL-SEA

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Adelaide to Seattle

What’s the top stopover airport for flights from Adelaide to Seattle?

Singapore (SIN) – chosen by Cheapflights users on 60% of one-stop itineraries from Adelaide to Seattle on Cheapflights.

What’s the cheapest stopover airport for flights from Adelaide to Seattle?

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of $1,499.

What’s the fastest stopover option from Adelaide to Seattle?

Flights via San Francisco (SFO) have the shortest average one-way travel time for one-stop routes: 19h 16m.

Which airport typically offers the quickest stopover for flights from Adelaide to Seattle?

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average stopover time of 1h 44m.

Related info for your journey

How long is the flight from Adelaide to Seattle?
Air Canada and Cathay Pacific can get you from Adelaide to Seattle in just under 21h 47m. Your travel time can differ by up to 23h 23m. There are 13409 km between Adelaide and Seattle. This flight may include one or multiple stops.
Can I find deals for flights from Adelaide to Seattle that include hotel bookings?
Yes. In addition to deals on Adelaide to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Adelaide to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Adelaide to Seattle.
Can I find deals for business class flights from Adelaide to Seattle?
Yes. Cheapflights offers flight deals from Adelaide to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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How does Cheapflights help users find flights from Adelaide to Seattle?

Cheapflights helps you search for flights from Adelaide to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Adelaide to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Adelaide to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Adelaide to Seattle with no change fees?

Certainly. Search results for flights to Seattle from Adelaide shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Adelaide to Seattle become cheaper?

Yes! Start tracking prices for Adelaide to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Adelaide to Seattle from $1,069

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Adelaide to Seattle

Cheapest flights from Adelaide to SeattleExplore the most affordable flight options available from Adelaide to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 September 2026.

Explore the most affordable flight options available from Adelaide to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 September 2026.

Best flights from Adelaide to SeattleDiscover carefully curated flight deals from Adelaide to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 September 2026.

Discover carefully curated flight deals from Adelaide to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 September 2026.

Last-minute flights from Adelaide to SeattleDiscover last-minute flight deals from Adelaide to Seattle. Data last updated 26 September 2026 and is based on user searches.

Discover last-minute flight deals from Adelaide to Seattle. Data last updated 26 September 2026 and is based on user searches.

One-way flights from Adelaide to SeattleSearch for one-way flight options from Adelaide to Seattle. Find affordable one-way fares based on user searches. Data last updated 26 September 2026.

Search for one-way flight options from Adelaide to Seattle. Find affordable one-way fares based on user searches. Data last updated 26 September 2026.

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Adelaide to Seattle that are best for you.

Best time to book a flight from Adelaide to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Adelaide with our price prediction graph.

Cheapflights Insights

What’s the top stopover airport for flights from Adelaide to Seattle?

Singapore (SIN) – chosen by Cheapflights users on 60% of one-stop itineraries from Adelaide to Seattle on Cheapflights.

What’s the cheapest stopover airport for flights from Adelaide to Seattle?

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of $1,499.

What’s the fastest stopover option from Adelaide to Seattle?

Flights via San Francisco (SFO) have the shortest average one-way travel time for one-stop routes: 19h 16m.

Which airport typically offers the quickest stopover for flights from Adelaide to Seattle?

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average stopover time of 1h 44m.

Related info for your journey

How long is the flight from Adelaide to Seattle?

Can I find deals for flights from Adelaide to Seattle that include hotel bookings?

How can I find direct flights from Adelaide to Seattle?

Can I find deals for business class flights from Adelaide to Seattle?

Travelling to a place near Seattle?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Adelaide to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Seattle by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

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Search flights from Adelaide to Seattle by cabin class

Find flights from Adelaide to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Adelaide and Seattle flights

Browse other Adelaide and Seattle flight options. Last updated on 26 September 2026.

Other flights from Adelaide

Browse through other flights departing from Adelaide. Flights are based on user searches made on Cheapflights and were last updated on 26 September 2026.

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Other flights to Seattle

Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 26 September 2026.

Fly with Cheapflights

How does Cheapflights help users find flights from Adelaide to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Adelaide to Seattle?

Can Cheapflights find flights from Adelaide to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Adelaide to Seattle become cheaper?

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Cheapest flights from Adelaide to Seattle
Explore the most affordable flight options available from Adelaide to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 September 2026.

Best flights from Adelaide to Seattle
Discover carefully curated flight deals from Adelaide to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 September 2026.

Last-minute flights from Adelaide to Seattle
Discover last-minute flight deals from Adelaide to Seattle. Data last updated 26 September 2026 and is based on user searches.

One-way flights from Adelaide to Seattle
Search for one-way flight options from Adelaide to Seattle. Find affordable one-way fares based on user searches. Data last updated 26 September 2026.