$726+ Cheap flights from Seattle (SEA) to Adelaide (ADL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Sep 13 — Sep 201
Round-trip
1 adult, Economy
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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 August 14, 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 August 14, 2026.
This Air Canada deal was found by Cheapflights users on 8/12. 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.
Tue 10/277:05 pm -
2 stops24h 00m
Tue 11/106:10 am -
2 stops21h 47m
Deal found 8/12![Multiple Airlines logo]()
$1,216
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:00 pm -
2 stops28h 20m
Mon 9/147:00 pm -
2 stops31h 35m
Deal found 8/10![Air Canada logo]()
$1,261
This oojo deal was found by Cheapflights users on 8/13. 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.
Fri 8/217:20 am -
2 stops22h 45m
Sat 9/512:40 pm -
2 stops25h 19m
Deal found 8/13![Multiple Airlines logo]()
$1,263
This United Airlines deal was found by Cheapflights users on 8/10. 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 12/912:15 pm -
2 stops30h 15m
Wed 12/232:55 pm -
1 stop28h 08m
Deal found 8/10![United Airlines logo]()
$1,267
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Tue 9/81:10 pm -
2 stops29h 25m
Mon 9/148:00 pm -
3 stops42h 01m
Deal found 8/10![United Airlines logo]()
$1,281
This Cathay Pacific deal was found by Cheapflights users on 8/11. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/174:59 pm -
2 stops47h 01m
Sun 11/2212:00 pm -
1 stop39h 40m
Deal found 8/11![Multiple Airlines logo]()
$1,285
This Trip.com deal was found by Cheapflights users on 8/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:50 pm -
1 stop29h 35m
Tue 11/1010:00 pm -
1 stop32h 10m
Deal found 8/12![Qatar Airways logo]()
$1,296
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:00 am -
2 stops34h 35m
Sun 10/255:10 pm -
2 stops21h 57m
Deal found 8/12![Multiple Airlines logo]()
$1,322
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/119:09 pm -
2 stops42h 26m
Tue 8/188:50 am -
2 stops29h 14m
Deal found 8/11![Multiple Airlines logo]()
$1,323
This Ovago deal was found by Cheapflights users on 8/12. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1410:55 am -
2 stops52h 40m
Thu 8/206:25 am -
2 stops33h 58m
Deal found 8/12![Multiple Airlines logo]()
$1,349
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 August 14, 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 August 14, 2026.
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/73:15 pm -
2 stops33h 25m
Sat 2/276:00 am -
2 stops30h 52m
Deal found 8/13![Air Canada logo]()
$1,261
This United Airlines deal was found by Cheapflights users on 8/9. 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.
Tue 2/97:32 pm -
2 stops26h 18m
Sun 2/286:10 am -
3 stops28h 14m
Deal found 8/9![United Airlines logo]()
$1,277
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:00 am -
2 stops34h 35m
Sun 10/255:10 pm -
2 stops21h 57m
Deal found 8/13![Multiple Airlines logo]()
$1,322
This KAYAK deal was found by Cheapflights users on 8/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/73:50 pm -
2 stops50h 20m
Sat 2/2710:00 pm -
1 stop32h 10m
Deal found 8/12![Qatar Airways logo]()
$1,342
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:00 pm -
2 stops28h 20m
Mon 9/147:00 pm -
2 stops31h 35m
Deal found 8/10![Air Canada logo]()
$1,261
This United Airlines deal was found by Cheapflights users on 8/10. 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 12/96:57 am -
2 stops33h 28m
Wed 12/237:15 am -
3 stops27h 45m
Deal found 8/10![United Airlines logo]()
$1,281
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:20 am -
2 stops40h 35m
Fri 10/27:10 pm -
2 stops44h 52m
Deal found 8/11![Multiple Airlines logo]()
$1,323
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Tue 9/81:10 pm -
2 stops29h 25m
Mon 9/148:00 pm -
3 stops42h 01m
Deal found 8/10![United Airlines logo]()
$1,281
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Sun 2/71:16 pm -
2 stops32h 34m
Sat 2/276:10 am -
3 stops28h 14m
Deal found 8/10![United Airlines logo]()
$1,327
Last-minute flights from Seattle to AdelaideDiscover last-minute flight deals from Seattle to Adelaide. Data last updated August 14, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Adelaide. Data last updated August 14, 2026 and is based on user searches.
This Ovago deal was found by Cheapflights users on 8/12. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1410:55 am -
2 stops52h 40m
Thu 8/206:25 am -
2 stops33h 58m
Deal found 8/12![Multiple Airlines logo]()
$1,349
This oojo deal was found by Cheapflights users on 8/13. 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.
Fri 8/217:20 am -
2 stops22h 45m
Sat 9/512:40 pm -
2 stops25h 19m
Deal found 8/13![Multiple Airlines logo]()
$1,263
This FlightHub deal was found by Cheapflights users on 8/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/214:25 pm -
1 stop30h 05m
Sat 9/510:00 pm -
1 stop31h 15m
Deal found 8/10![Qatar Airways logo]()
$1,467
This Air Canada deal was found by Cheapflights users on 8/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:00 pm -
2 stops28h 20m
Mon 9/147:00 pm -
2 stops31h 35m
Deal found 8/10![Air Canada logo]()
$1,261
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Tue 9/81:10 pm -
2 stops29h 25m
Mon 9/148:00 pm -
3 stops42h 01m
Deal found 8/10![United Airlines logo]()
$1,281
This SmartFares deal was found by Cheapflights users on 8/10. 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.
Tue 9/84:25 pm -
1 stop30h 05m
Mon 9/1410:00 pm -
1 stop31h 15m
Deal found 8/10![Qatar Airways logo]()
$1,424
This Gotogate deal was found by Cheapflights users on 8/11. 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.
Fri 9/254:25 pm -
1 stop30h 05m
Fri 10/210:00 pm -
1 stop30h 55m
Deal found 8/11![Qatar Airways logo]()
$1,456
This Trip.com deal was found by Cheapflights users on 8/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/274:25 pm -
1 stop30h 05m
Sun 10/410:00 pm -
1 stop31h 55m
Deal found 8/13![Qatar Airways logo]()
$1,379
This Trip.com deal was found by Cheapflights users on 8/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/274:25 pm -
1 stop30h 05m
Sun 10/48:10 pm -
2 stops33h 45m
Deal found 8/13![Multiple Airlines logo]()
$1,442
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 August 14, 2026.
Search for one-way flight options from Seattle to Adelaide. Find affordable one-way fares based on user searches. Data last updated August 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Wed 12/911:28 am -
3 stops50h 37m
Deal found 8/11![Multiple Airlines logo]()
$726
This oojo deal was found by Cheapflights users on 8/12. 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 12/98:45 am -
1 stop29h 35m
Deal found 8/12![Singapore Airlines logo]()
$975
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 August 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,216 (Air Canada) |
One-way from | $726 (Kiwi.com) |
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 2,558,603 searches. Data last updated August 14, 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
Sun 2/7
3:15 pm-7:10 pm
2 stops33h 25m
Adelaide
Sat 2/27
6:00 am-6:22 pm
2 stops30h 52m
$1,261
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Tue 9/8
3:00 pm-11:50 am
2 stops28h 20m
Adelaide
Mon 9/14
7:00 pm-10:05 am
2 stops31h 35m
$1,261
Quickest round-trip
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Tue 2/9
7:32 pm-4:20 pm
2 stops26h 18m
Adelaide
Sun 2/28
6:10 am-3:54 pm
3 stops28h 14m
$1,277
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 12/9
6:57 am-10:55 am
2 stops33h 28m
Adelaide
Wed 12/23
7:15 am-4:30 pm
3 stops27h 45m
$1,281
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Tue 9/8
1:10 pm-11:05 am
2 stops29h 25m
Adelaide
Mon 9/14
8:00 pm-9:31 pm
3 stops42h 01m
$1,281
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 10/21
7:00 am-11:05 am
2 stops34h 35m
Adelaide
Sun 10/25
5:10 pm-9:37 pm
2 stops21h 57m
$1,322
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Fri 9/25
7:20 am-4:25 pm
2 stops40h 35m
Adelaide
Fri 10/2
7:10 pm-11:32 pm
2 stops44h 52m
$1,323
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Sun 2/7
1:16 pm-4:20 pm
2 stops32h 34m
Adelaide
Sat 2/27
6:10 am-3:54 pm
3 stops28h 14m
$1,327
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Sun 2/7
3:50 pm-12:40 pm
2 stops50h 20m
Adelaide
Sat 2/27
10:00 pm-11:40 am
1 stop32h 10m
$1,342
Cheapest one-way
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 12/9
11:28 am-8:35 am
3 stops50h 37m
$726
Showing 1-10 of 11 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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