$1,200+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Sep 10 — Sep 171
Round-trip
1 adult, Economy
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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 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 August 11, 2026.
This Air Canada deal was found by Cheapflights users on 8/8. 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.
Tue 11/177:05 pm -
2 stops24h 30m
Sun 11/226:10 am -
2 stops26h 57m
Deal found 8/8![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 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 oojo 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 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 stops27h 43m
Deal found 8/10![Multiple Airlines logo]()
$1,275
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Tue 9/297:25 pm -
2 stops23h 10m
Tue 10/66:10 am -
2 stops32h 21m
Deal found 8/8![United Airlines logo]()
$1,277
This United Airlines deal was found by Cheapflights users on 8/7. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:43 pm -
2 stops23h 37m
Sun 10/256:10 am -
2 stops23h 40m
Deal found 8/7![United Airlines logo]()
$1,278
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 oojo deal was found by Cheapflights users on 8/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:26 am -
2 stops35h 19m
Sat 8/155:10 pm -
2 stops46h 41m
Deal found 8/7![Multiple Airlines logo]()
$1,288
This SmartFares deal was found by Cheapflights users on 8/7. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:30 pm -
2 stops40h 35m
Thu 10/1512:00 pm -
2 stops29h 02m
Deal found 8/7![Multiple Airlines logo]()
$1,319
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:00 am -
2 stops37h 10m
Sun 10/252:30 pm -
2 stops25h 52m
Deal found 8/6![Multiple Airlines logo]()
$1,322
This oojo deal was found by Cheapflights users on 8/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:20 am -
2 stops22h 45m
Fri 9/111:25 pm -
2 stops24h 34m
Deal found 8/8![Multiple Airlines logo]()
$1,329
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 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 August 11, 2026.
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 8/8. 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.
Tue 9/297:25 pm -
2 stops23h 10m
Tue 10/66:10 am -
2 stops32h 21m
Deal found 8/8![United Airlines logo]()
$1,277
This oojo deal was found by Cheapflights users on 8/6. 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.
Sun 2/73:50 pm -
2 stops34h 20m
Sat 2/2710:00 pm -
1 stop32h 10m
Deal found 8/6![Qatar Airways logo]()
$1,313
This Expedia deal was found by Cheapflights users on 8/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:20 am -
2 stops22h 45m
Mon 10/56:00 am -
2 stops31h 20m
Deal found 8/8![Multiple Airlines logo]()
$1,553
This Qantas Airways deal was found by Cheapflights users on 8/8. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:59 pm -
2 stops33h 36m
Tue 10/67:10 pm -
2 stops44h 57m
Deal found 8/8![Qantas Airways logo]()
$1,570
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 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 FlightHub deal was found by Cheapflights users on 8/6. 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 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 8/6![Qatar Airways logo]()
$1,467
This Gurufare deal was found by Cheapflights users on 8/8. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/173:50 pm -
2 stops47h 40m
Sun 11/2210:00 pm -
1 stop32h 10m
Deal found 8/8![Qatar Airways logo]()
$1,514
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/142:15 pm -
2 stops72h 45m
Sun 2/76:10 am -
2 stops22h 41m
Deal found 8/11![United Airlines logo]()
$1,404
Last-minute flights from Seattle to AdelaideDiscover last-minute flight deals from Seattle to Adelaide. Data last updated August 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Adelaide. Data last updated August 11, 2026 and is based on user searches.
This oojo 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 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 stops27h 43m
Deal found 8/10![Multiple Airlines logo]()
$1,275
This oojo deal was found by Cheapflights users on 8/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:20 am -
2 stops22h 45m
Fri 9/111:25 pm -
2 stops24h 34m
Deal found 8/8![Multiple Airlines logo]()
$1,329
This Trip.com deal was found by Cheapflights users on 8/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:25 pm -
1 stop30h 05m
Fri 9/1110:00 pm -
1 stop31h 15m
Deal found 8/8![Qatar Airways logo]()
$1,336
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 lol.travel deal was found by Cheapflights users on 8/5. 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.
Tue 9/153:00 pm -
2 stops27h 40m
Tue 9/228:00 pm -
2 stops39h 02m
Deal found 8/5![Air Canada logo]()
$1,200
This Bravofly deal was found by Cheapflights users on 8/5. 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.
Tue 9/154:25 pm -
1 stop30h 05m
Tue 9/2210:00 pm -
1 stop31h 15m
Deal found 8/5![Qatar Airways logo]()
$1,407
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Tue 9/297:25 pm -
2 stops23h 10m
Tue 10/66:10 am -
2 stops32h 21m
Deal found 8/8![United Airlines logo]()
$1,277
This oojo deal was found by Cheapflights users on 8/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:02 pm -
2 stops26h 23m
Mon 10/55:10 pm -
2 stops36h 36m
Deal found 8/8![Qantas Airways logo]()
$1,351
This SmartFares deal was found by Cheapflights users on 8/7. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:30 pm -
2 stops40h 35m
Thu 10/1512:00 pm -
2 stops29h 02m
Deal found 8/7![Multiple Airlines logo]()
$1,319
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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,200 (lol.travel) |
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 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
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
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Tue 9/29
7:25 pm-11:05 am
2 stops23h 10m
Adelaide
Tue 10/6
6:10 am-9:01 pm
2 stops32h 21m
$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
Sun 2/7
3:50 pm-8:40 pm
2 stops34h 20m
Adelaide
Sat 2/27
10:00 pm-11:40 am
1 stop32h 10m
$1,313
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 1/14
2:15 pm-9:30 am
2 stops72h 45m
Adelaide
Sun 2/7
6:10 am-10:21 am
2 stops22h 41m
$1,404
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Fri 8/21
4:25 pm-3:00 pm
1 stop30h 05m
Adelaide
Sat 9/5
10:00 pm-12:45 pm
1 stop31h 15m
$1,467
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Tue 11/17
3:50 pm-10:00 am
2 stops47h 40m
Adelaide
Sun 11/22
10:00 pm-11:40 am
1 stop32h 10m
$1,514
Quickest round-trip
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 9/30
7:20 am-10:35 pm
2 stops22h 45m
Adelaide
Mon 10/5
6:00 am-7:50 pm
2 stops31h 20m
$1,553
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 9/30
4:59 pm-7:05 pm
2 stops33h 36m
Adelaide
Tue 10/6
7:10 pm-10:37 pm
2 stops44h 57m
$1,570
Sorted 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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