$647+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Sep 19 — Sep 261
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Adelaide with Cheapflights
1. Tell us where you want to go
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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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 20, 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 20, 2026.
This Justfly.com deal was found by Cheapflights users on 8/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:15 pm -
2 stops23h 25m
Mon 10/510:20 pm -
2 stops33h 32m
Deal found 8/18![Air Canada logo]()
$1,222
This Justfly.com deal was found by Cheapflights users on 8/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:15 pm -
2 stops30h 25m
Tue 10/66:00 am -
2 stops21h 35m
Deal found 8/18![Air Canada logo]()
$1,226
This Justfly.com deal was found by Cheapflights users on 8/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:00 pm -
2 stops34h 40m
Tue 9/224:30 pm -
2 stops46h 47m
Deal found 8/17![Air Canada logo]()
$1,263
This oojo deal was found by Cheapflights users on 8/18. 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 8/18![Multiple Airlines logo]()
$1,264
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/217:35 pm -
2 stops23h 05m
Tue 10/66:10 am -
2 stops30h 04m
Deal found 8/18![United Airlines logo]()
$1,275
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/1410:55 am -
2 stops31h 45m
Mon 9/217:15 am -
2 stops25h 29m
Deal found 8/17![United Airlines logo]()
$1,277
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/163:30 pm -
2 stops27h 05m
Tue 10/66:10 am -
2 stops23h 38m
Deal found 8/18![United Airlines logo]()
$1,278
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/213:30 pm -
2 stops27h 10m
Mon 10/56:00 am -
2 stops23h 05m
Deal found 8/18![United Airlines logo]()
$1,279
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/151:10 pm -
2 stops29h 25m
Tue 9/228:00 pm -
3 stops41h 45m
Deal found 8/17![United Airlines logo]()
$1,281
This Air Canada deal was found by Cheapflights users on 8/18. 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 9/197:15 pm -
2 stops29h 10m
Mon 10/510:20 pm -
2 stops29h 15m
Deal found 8/18![Multiple Airlines logo]()
$1,303
This FlightHub deal was found by Cheapflights users on 8/16. 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.
Mon 9/144:25 pm -
1 stop30h 05m
Mon 9/2110:00 pm -
1 stop31h 15m
Deal found 8/16![Qatar Airways logo]()
$1,311
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 20, 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 20, 2026.
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/151:10 pm -
2 stops29h 25m
Tue 9/228:00 pm -
3 stops41h 45m
Deal found 8/17![United Airlines logo]()
$1,281
This FlightHub deal was found by Cheapflights users on 8/17. 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.
Tue 9/154:25 pm -
1 stop30h 05m
Tue 9/2210:00 pm -
1 stop31h 15m
Deal found 8/17![Qatar Airways logo]()
$1,391
This Cathay Pacific deal was found by Cheapflights users on 8/15. 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.
Sun 9/138:48 pm -
3 stops42h 47m
Sun 9/2012:40 pm -
2 stops37h 55m
Deal found 8/15![Cathay Pacific logo]()
$1,511
This Qantas Airways deal was found by Cheapflights users on 8/16. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:02 pm -
2 stops25h 33m
Wed 10/76:00 am -
2 stops23h 46m
Deal found 8/16![Qantas Airways logo]()
$1,524
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:02 pm -
2 stops28h 08m
Thu 10/82:25 pm -
2 stops25h 42m
Deal found 8/17![American Airlines logo]()
$1,546
This Qantas Airways deal was found by Cheapflights users on 8/20. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:02 pm -
2 stops25h 33m
Tue 8/251:25 pm -
2 stops22h 44m
Deal found 8/20![Multiple Airlines logo]()
$1,665
This Trip.com deal was found by Cheapflights users on 8/17. 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.
Thu 10/14:25 pm -
1 stop30h 05m
Thu 10/810:00 pm -
1 stop31h 55m
Deal found 8/17![Qatar Airways logo]()
$1,491
This Qatar Airways deal was found by Cheapflights users on 8/18. 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.
Wed 9/163:56 pm -
2 stops54h 34m
Fri 10/210:00 pm -
1 stop30h 55m
Deal found 8/18![Qatar Airways logo]()
$1,498
This Qatar Airways deal was found by Cheapflights users on 8/18. 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.
Mon 9/214:25 pm -
1 stop30h 05m
Sat 10/38:10 pm -
2 stops56h 45m
Deal found 8/18![Qatar Airways logo]()
$1,557
This Trip.com deal was found by Cheapflights users on 8/16. 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.
Wed 9/304:25 pm -
1 stop30h 05m
Wed 10/710:00 pm -
1 stop31h 55m
Deal found 8/16![Qatar Airways logo]()
$1,668
This FlightHub deal was found by Cheapflights users on 8/20. 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 8/234:25 pm -
1 stop30h 05m
Tue 8/2510:00 pm -
1 stop31h 30m
Deal found 8/20![Qatar Airways logo]()
$1,946
Last-minute flights from Seattle to AdelaideDiscover last-minute flight deals from Seattle to Adelaide. Data last updated August 20, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Adelaide. Data last updated August 20, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 8/18. 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 8/18![Multiple Airlines logo]()
$1,264
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/1410:55 am -
2 stops31h 45m
Mon 9/217:15 am -
2 stops25h 29m
Deal found 8/17![United Airlines logo]()
$1,277
This FlightHub deal was found by Cheapflights users on 8/16. 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.
Mon 9/144:25 pm -
1 stop30h 05m
Mon 9/2110:00 pm -
1 stop31h 15m
Deal found 8/16![Qatar Airways logo]()
$1,311
This Justfly.com deal was found by Cheapflights users on 8/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:00 pm -
2 stops34h 40m
Tue 9/224:30 pm -
2 stops46h 47m
Deal found 8/17![Air Canada logo]()
$1,263
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/151:10 pm -
2 stops29h 25m
Tue 9/228:00 pm -
3 stops41h 45m
Deal found 8/17![United Airlines logo]()
$1,281
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/163:30 pm -
2 stops27h 05m
Tue 10/66:10 am -
2 stops23h 38m
Deal found 8/18![United Airlines logo]()
$1,278
This Air Canada deal was found by Cheapflights users on 8/18. 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 9/197:15 pm -
2 stops29h 10m
Mon 10/510:20 pm -
2 stops29h 15m
Deal found 8/18![Multiple Airlines logo]()
$1,303
This Justfly.com deal was found by Cheapflights users on 8/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:15 pm -
2 stops23h 25m
Mon 10/510:20 pm -
2 stops33h 32m
Deal found 8/18![Air Canada logo]()
$1,222
This Justfly.com deal was found by Cheapflights users on 8/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:15 pm -
2 stops30h 25m
Tue 10/66:00 am -
2 stops21h 35m
Deal found 8/18![Air Canada logo]()
$1,226
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/217:35 pm -
2 stops23h 05m
Tue 10/66:10 am -
2 stops30h 04m
Deal found 8/18![United Airlines logo]()
$1,275
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/213:30 pm -
2 stops27h 10m
Mon 10/56:00 am -
2 stops23h 05m
Deal found 8/18![United Airlines logo]()
$1,279
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 20, 2026.
Search for one-way flight options from Seattle to Adelaide. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 12/104:20 pm -
2 stops25h 25m
Deal found 8/19![Multiple Airlines logo]()
$647
This Expedia deal was found by Cheapflights users on 8/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1010:50 am -
1 stop29h 10m
Deal found 8/19![Cathay Pacific logo]()
$1,136
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 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,221 (FlightHub) |
One-way from | $647 (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 7,457,451 searches. Data last updated August 20, 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
Tue 9/15
1:10 pm-11:05 am
2 stops29h 25m
Adelaide
Tue 9/22
8:00 pm-9:15 pm
3 stops41h 45m
$1,281
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Tue 9/15
4:25 pm-3:00 pm
1 stop30h 05m
Adelaide
Tue 9/22
10:00 pm-12:45 pm
1 stop31h 15m
$1,391
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 10/1
4:25 pm-3:00 pm
1 stop30h 05m
Adelaide
Thu 10/8
10:00 pm-12:25 pm
1 stop31h 55m
$1,491
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 9/16
3:56 pm-3:00 pm
2 stops54h 34m
Adelaide
Fri 10/2
10:00 pm-12:25 pm
1 stop30h 55m
$1,498
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Sun 9/13
8:48 pm-8:05 am
3 stops42h 47m
Adelaide
Sun 9/20
12:40 pm-10:05 am
2 stops37h 55m
$1,511
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 9/30
5:02 pm-11:05 am
2 stops25h 33m
Adelaide
Wed 10/7
6:00 am-12:16 pm
2 stops23h 46m
$1,524
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 10/1
5:02 pm-1:40 pm
2 stops28h 08m
Adelaide
Thu 10/8
2:25 pm-10:37 pm
2 stops25h 42m
$1,546
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Mon 9/21
4:25 pm-3:00 pm
1 stop30h 05m
Adelaide
Sat 10/3
8:10 pm-12:25 pm
2 stops56h 45m
$1,557
Quickest round-trip
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Sun 8/23
5:02 pm-11:05 am
2 stops25h 33m
Adelaide
Tue 8/25
1:25 pm-7:39 pm
2 stops22h 44m
$1,665
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 9/30
4:25 pm-3:00 pm
1 stop30h 05m
Adelaide
Wed 10/7
10:00 pm-12:25 pm
1 stop31h 55m
$1,668
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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