$619+ Cheap flights from Seattle (SEA) to Adelaide (ADL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Adelaide with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Adelaide
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to AdelaideExplore the most affordable flight options available from Seattle to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from Seattle to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This lol.travel deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:05 pm -
2 stops29h 35m
Mon 11/26:10 am -
2 stops26h 57m
Deal found 9/11![Air Canada logo]()
$1,086
This Air Canada deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:15 pm -
2 stops25h 35m
Wed 10/286:10 am -
2 stops20h 47m
Deal found 9/6![Multiple Airlines logo]()
$1,169
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:15 pm -
2 stops23h 50m
Sat 10/316:10 am -
2 stops29h 42m
Deal found 9/9![Multiple Airlines logo]()
$1,245
This Air Canada deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:15 pm -
2 stops24h 45m
Mon 10/266:10 am -
2 stops20h 47m
Deal found 9/7![Multiple Airlines logo]()
$1,261
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:05 am -
3 stops32h 20m
Sat 10/316:10 am -
2 stops30h 06m
Deal found 9/9![United Airlines logo]()
$1,382
This Bravofly deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:45 am -
2 stops53h 10m
Sun 10/117:50 am -
2 stops43h 45m
Deal found 9/11![Cathay Pacific logo]()
$1,416
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:40 am -
2 stops44h 20m
Wed 11/46:10 am -
2 stops21h 52m
Deal found 9/9![Air Canada logo]()
$1,436
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/233:24 pm -
2 stops30h 26m
Wed 1/62:55 pm -
2 stops37h 34m
Deal found 9/10![United Airlines logo]()
$1,499
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/215:35 pm -
1 stop21h 25m
Mon 1/42:55 pm -
2 stops37h 34m
Deal found 9/8![United Airlines logo]()
$1,525
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/117:00 am -
2 stops33h 25m
Fri 12/257:15 am -
2 stops30h 47m
Deal found 9/9![United Airlines logo]()
$1,563
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/177:25 pm -
1 stop19h 35m
Mon 1/42:55 pm -
2 stops37h 34m
Deal found 9/8![United Airlines logo]()
$1,575
This Gotogate deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:25 pm -
1 stop30h 05m
Sun 10/118:00 pm -
2 stops40h 14m
Deal found 9/11![Multiple Airlines logo]()
$1,579
Best flights from Seattle to AdelaideDiscover carefully curated flight deals from Seattle to Adelaide that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Seattle to Adelaide that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This Air Canada deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:15 pm -
2 stops24h 45m
Mon 10/266:10 am -
2 stops20h 47m
Deal found 9/7![Multiple Airlines logo]()
$1,261
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:05 am -
3 stops32h 20m
Sat 10/316:10 am -
2 stops30h 06m
Deal found 9/9![United Airlines logo]()
$1,382
This Bravofly deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:45 am -
2 stops53h 10m
Sun 10/117:50 am -
2 stops43h 45m
Deal found 9/11![Cathay Pacific logo]()
$1,416
This Air Canada deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:40 am -
2 stops44h 20m
Wed 11/46:10 am -
2 stops21h 52m
Deal found 9/8![Air Canada logo]()
$1,436
This oojo deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:25 pm -
1 stop30h 05m
Wed 10/2810:00 pm -
1 stop32h 10m
Deal found 9/6![Qatar Airways logo]()
$1,675
This Qatar Airways deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:25 pm -
1 stop30h 00m
Sat 10/311:20 pm -
2 stops40h 50m
Deal found 9/9![Qatar Airways logo]()
$1,701
This Mytrip deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:25 pm -
1 stop30h 05m
Sun 10/1110:00 pm -
1 stop31h 55m
Deal found 9/11![Qatar Airways logo]()
$1,709
Last-minute flights from Seattle to AdelaideDiscover last-minute flight deals from Seattle to Adelaide. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Adelaide. Data last updated September 11, 2026 and is based on user searches.
This Bravofly deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:45 am -
2 stops53h 10m
Sun 10/117:50 am -
2 stops43h 45m
Deal found 9/11![Cathay Pacific logo]()
$1,416
This Gotogate deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:25 pm -
1 stop30h 05m
Sun 10/118:00 pm -
2 stops40h 14m
Deal found 9/11![Multiple Airlines logo]()
$1,579
This Mytrip deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:25 pm -
1 stop30h 05m
Sun 10/1110:00 pm -
1 stop31h 55m
Deal found 9/11![Qatar Airways logo]()
$1,709
One-way flights from Seattle to AdelaideSearch for one-way flight options from Seattle to Adelaide. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from Seattle to Adelaide. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:00 pm -
2 stops56h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$619
This United deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:43 pm -
2 stops22h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$660
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:41 am -
3 stops44h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$799
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/278:15 pm -
2 stops43h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$821
This Bravofly deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/274:25 pm -
1 stop30h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Qatar Airways logo]()
$835
This SmartFares deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:25 pm -
1 stop30h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Qatar Airways logo]()
$1,093
Find flight deals from Seattle to Adelaide
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Adelaide (ADL). 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 September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,086 (lol.travel) |
One-way from | $660 (United) |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Adelaide that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from Seattle to Adelaide that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Mon 10/26
8:00 pm-10:15 pm
2 stops56h 45m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$619
Quickest round-trip
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Mon 10/12
6:43 pm-11:05 am
2 stops22h 52m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$660
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Sun 9/27
9:45 pm-8:40 am
3 stops42h 25m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$824
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 10/1
4:59 pm-10:00 pm
2 stops36h 31m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$846
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Mon 10/12
7:15 pm-1:30 pm
2 stops24h 45m
Adelaide
Mon 10/26
6:10 am-9:27 am
2 stops20h 47m
$1,261
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Sat 10/24
9:05 am-10:55 am
3 stops32h 20m
Adelaide
Sat 10/31
6:10 am-6:46 pm
2 stops30h 06m
$1,382
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 9/16
11:45 am-9:25 am
2 stops53h 10m
Adelaide
Sun 10/11
7:50 am-10:05 am
2 stops43h 45m
$1,416
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Sat 10/31
8:40 am-10:30 pm
2 stops44h 20m
Adelaide
Wed 11/4
6:10 am-9:32 am
2 stops21h 52m
$1,436
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 10/1
4:25 pm-3:00 pm
1 stop30h 05m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$1,614
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 10/21
4:25 pm-4:00 pm
1 stop30h 05m
Adelaide
Wed 10/28
10:00 pm-12:40 pm
1 stop32h 10m
$1,675
Showing 1-10 of 13 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Seattle-Adelaide flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Adelaide flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Adelaide flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Adelaide flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Adelaide flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Adelaide
Have a flexible travel schedule? Discover the best time to fly to Adelaide from Seattle with our price prediction graph.
SEA-ADL
Estimated round-trip 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.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Adelaide. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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