$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 20 — Sep 271
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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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 21, 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 21, 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 oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:40 am -
2 stops29h 15m
Sat 9/56:00 am -
2 stops33h 59m
Deal found 8/20![Qantas Airways logo]()
$1,256
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
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 21, 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 21, 2026.
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/127:05 pm -
2 stops32h 10m
Sun 2/216:10 am -
2 stops21h 47m
Deal found 8/20![Multiple Airlines logo]()
$1,251
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.
Sun 2/73:15 pm -
2 stops33h 25m
Sat 2/276:00 am -
2 stops30h 52m
Deal found 8/16![Air Canada logo]()
$1,261
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 2/97:32 pm -
2 stops26h 18m
Tue 2/237:15 am -
3 stops27h 09m
Deal found 8/17![United Airlines logo]()
$1,277
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 Qatar 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:50 pm -
1 stop29h 35m
Wed 11/410:00 pm -
1 stop32h 10m
Deal found 8/20![Qatar Airways logo]()
$1,598
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.
Tue 9/151:10 pm -
2 stops29h 25m
Tue 9/228:00 pm -
3 stops41h 45m
Deal found 8/18![United Airlines logo]()
$1,282
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/87:00 am -
2 stops30h 40m
Thu 2/112:30 pm -
2 stops27h 26m
Deal found 8/16![Multiple Airlines logo]()
$1,322
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:51 pm -
2 stops24h 49m
Tue 12/226:10 am -
2 stops28h 52m
Deal found 8/19![United Airlines logo]()
$1,328
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/75:30 pm -
2 stops28h 20m
Sat 2/276:10 am -
3 stops28h 14m
Deal found 8/19![United Airlines logo]()
$1,328
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.
Thu 9/176:52 pm -
2 stops23h 33m
Mon 10/56:00 am -
2 stops23h 48m
Deal found 8/18![United Airlines logo]()
$1,333
Last-minute flights from Seattle to AdelaideDiscover last-minute flight deals from Seattle to Adelaide. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Adelaide. Data last updated August 21, 2026 and is based on user searches.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:40 am -
2 stops29h 15m
Sat 9/56:00 am -
2 stops33h 59m
Deal found 8/20![Qantas Airways logo]()
$1,256
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 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 21, 2026.
Search for one-way flight options from Seattle to Adelaide. Find affordable one-way fares based on user searches. Data last updated August 21, 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 21, 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 21, 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
Fri 2/12
7:05 pm-9:45 pm
2 stops32h 10m
Adelaide
Sun 2/21
6:10 am-9:27 am
2 stops21h 47m
$1,251
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 2/9
7:32 pm-4:20 pm
2 stops26h 18m
Adelaide
Tue 2/23
7:15 am-3:54 pm
3 stops27h 09m
$1,277
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
$1,282
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Mon 2/8
7:00 am-8:10 am
2 stops30h 40m
Adelaide
Thu 2/11
2:30 pm-11:26 pm
2 stops27h 26m
$1,322
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 12/10
6:51 pm-2:10 pm
2 stops24h 49m
Adelaide
Tue 12/22
6:10 am-4:32 pm
2 stops28h 52m
$1,328
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Sun 2/7
5:30 pm-4:20 pm
2 stops28h 20m
Adelaide
Sat 2/27
6:10 am-3:54 pm
3 stops28h 14m
$1,328
Quickest round-trip
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 9/17
6:52 pm-10:55 am
2 stops23h 33m
Adelaide
Mon 10/5
6:00 am-12:18 pm
2 stops23h 48m
$1,333
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
Sat 10/31
4:50 pm-3:55 pm
1 stop29h 35m
Adelaide
Wed 11/4
10:00 pm-11:40 am
1 stop32h 10m
$1,598
Showing 1-10 of 12 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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