Cheap flights from Adelaide to Seattle from $840
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/11. 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 8 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 8 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 8 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 8 October 2026.
Last-minute flights from Adelaide to SeattleDiscover last-minute flight deals from Adelaide to Seattle. Data last updated 8 October 2026 and is based on user searches.
Discover last-minute flight deals from Adelaide to Seattle. Data last updated 8 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 8 October 2026.
Search for one-way flight options from Adelaide to Seattle. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.
Find flight deals from Adelaide to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Adelaide (ADL) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 8 October 2026.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Adelaide to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
AdelaideSeattle
ADL Adelaide - SEA Seattle/Tacoma Intl
ADLSEA
Adelaide
Thu 19/11
06:15-23:18
2 stops35h 33m
Seattle/Tacoma Intl
Wed 31/12
00:00-17:30
Nonstop0h 00m
AdelaideSeattle
ADL Adelaide - SEA Seattle/Tacoma Intl
ADLSEA
Adelaide
Sun 7/2
19:55-21:17
3 stops43h 52m
Seattle/Tacoma Intl
Wed 17/2
19:32-13:00
2 stops22h 58m
AdelaideSeattle
ADL Adelaide - SEA Seattle/Tacoma Intl
ADLSEA
Adelaide
Thu 19/11
18:35-07:05
1 stop55h 00m
Seattle/Tacoma Intl
Wed 31/12
00:00-17:30
Nonstop0h 00m
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
AdelaideSeattle
ADL Adelaide - SEA Seattle/Tacoma Intl
ADLSEA
Adelaide
Wed 20/1
14:55-22:57
1 stop26h 32m
Seattle/Tacoma Intl
Sat 30/1
13:18-09:30
1 stop25h 42m
AdelaideSeattle
ADL Adelaide - SEA Seattle/Tacoma Intl
ADLSEA
Adelaide
Fri 25/12
08:40-16:32
2 stops26h 22m
Seattle/Tacoma Intl
Mon 11/1
05:00-09:30
1 stop34h 00m
AdelaideSeattle
ADL Adelaide - SEA Seattle/Tacoma Intl
ADLSEA
Adelaide
Wed 20/1
06:25-12:43
2 stops24h 48m
Seattle/Tacoma Intl
Sat 30/1
13:13-11:00
2 stops27h 17m
AdelaideSeattle
ADL Adelaide - SEA Seattle/Tacoma Intl
ADLSEA
Adelaide
Sun 7/2
18:35-07:05
1 stop55h 00m
Seattle/Tacoma Intl
Wed 17/2
08:40-11:00
2 stops31h 50m
AdelaideSeattle
ADL Adelaide - SEA Seattle/Tacoma Intl
ADLSEA
Adelaide
Mon 28/12
14:55-23:16
2 stops26h 51m
Seattle/Tacoma Intl
Sun 10/1
17:44-14:10
2 stops25h 56m
AdelaideSeattle
ADL Adelaide - SEA Seattle/Tacoma Intl
ADLSEA
Adelaide
Tue 24/11
06:00-13:08
2 stops25h 38m
Seattle/Tacoma Intl
Tue 15/12
15:55-13:30
3 stops27h 05m
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
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 $1,512.
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
Find useful and relevant information for your journey from Adelaide to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near Seattle?
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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
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Search flights from Adelaide to Seattle by cabin class
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Adelaide and Seattle flights
Browse other Adelaide and Seattle flight options. Last updated on 8 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 8 October 2026.
Popular flight searches
Check out other popular destinations found by fellow travellers in 2026
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 8 October 2026.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
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.