How long is the flight from Adelaide to Seattle?

United Airlines can get you from Adelaide to Seattle in just under 35h 38m. Your travel time can differ by up to . There are 13409 km between Adelaide and Seattle.

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.

$1,458+ 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 3 October 2026.

Tue 24/1108:40 -

2 stops26h 17m

Tue 15/1215:20 -

2 stops49h 05m

Deal found 3/10$1,458

Fri 30/1006:10 -

2 stops23h 40m

Fri 6/1119:35 -

2 stops22h 55m

Deal found 2/10$1,579

Mon 16/1108:40 -

2 stops22h 10m

Mon 23/1117:23 -

2 stops28h 17m

Deal found 1/10$1,686

Mon 16/1106:10 -

2 stops35h 38m

Mon 23/1113:16 -

2 stops30h 24m

Deal found 2/10$1,689

Mon 16/1118:50 -

2 stops32h 45m

Mon 23/1110:25 -

1 stop29h 35m

Deal found 2/10$2,109

Fri 30/1018:35 -

1 stop55h 00m

Fri 6/1108:40 -

1 stop38h 10m

Deal found 2/10$2,255

Fri 30/1010:15 -

2 stops40h 34m

Fri 6/1108:40 -

1 stop38h 10m

Deal found 2/10$2,472

Find flight deals from Adelaide to Seattle

Round-trip from	$1,579

United Airlines
30/10-6/11
4 total stops
46h 35m total
Adelaide to Seattle

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Mon 16/11

06:10-23:18

2 stops35h 38m

Seattle/Tacoma Intl

Mon 23/11

13:16-14:10

2 stops30h 24m

$1,689

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

08:40-16:27

2 stops26h 17m

Seattle/Tacoma Intl

Tue 15/12

15:20-10:55

2 stops49h 05m

$1,720

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Fri 30/10

10:15-09:19

2 stops40h 34m

Seattle/Tacoma Intl

Fri 6/11

08:40-17:20

1 stop38h 10m

$2,472

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

06:25-13:08

2 stops25h 13m

Seattle/Tacoma Intl

Tue 15/12

13:36-11:00

3 stops26h 54m

$2,574

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 13/10

06:25-10:05

2 stops45h 10m

Seattle/Tacoma Intl

Fri 16/10

06:10-17:45

3 stops42h 05m

$2,937

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 13/10

22:00-13:00

1 stop32h 30m

Seattle/Tacoma Intl

Fri 16/10

16:25-16:00

1 stop30h 05m

$3,044

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 24/11

18:20-07:05

2 stops31h 15m

Seattle/Tacoma Intl

Tue 15/12

08:40-08:50

1 stop29h 40m

$3,186

Fastest return journey

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Tue 30/3

18:40-19:30

3 stops42h 20m

Seattle/Tacoma Intl

Wed 31/12

00:00-17:30

Nonstop0h 00m

$3,733

Flights are sorted by cheapest return flights first.

Deals found on 29/9

Sorted 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 $1,516.

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?
United Airlines can get you from Adelaide to Seattle in just under 35h 38m. Your travel time can differ by up to . There are 13409 km between Adelaide and Seattle.
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 $1,458

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/11. 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 3 October 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 3 October 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 3 October 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 3 October 2026.

Last-minute flights from Adelaide to SeattleDiscover last-minute flight deals from Adelaide to Seattle. Data last updated 3 October 2026 and is based on user searches.

Discover last-minute flight deals from Adelaide to Seattle. Data last updated 3 October 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 3 October 2026.

Search for one-way flight options from Adelaide to Seattle. Find affordable one-way fares based on user searches. Data last updated 3 October 2026.

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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 $1,516.

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

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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

Book a non-stop flight to one of these other cities located in United States.

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 3 October 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 3 October 2026.

Popular flight searches

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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 3 October 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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Book with flexibility

Travel Smart

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 3 October 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 3 October 2026.

Last-minute flights from Adelaide to Seattle
Discover last-minute flight deals from Adelaide to Seattle. Data last updated 3 October 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 3 October 2026.