$519+ Cheap flights from Seattle (SEA) to New South Wales
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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Aug 26 — Sep 21
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to New South Wales with Cheapflights
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Cheapest flights from Seattle to New South WalesExplore the most affordable flight options available from Seattle to New South Wales. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.
Explore the most affordable flight options available from Seattle to New South Wales. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.
This lastminute.com deal was found by Cheapflights users on 7/23. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/264:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Tue 8/1111:45 am
SYD
- SEA
2 stops23h 47m
ANA
Deal found 7/23![ANA logo]()
$927
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 11/511:06 am
SEA
- SYD
1 stop24h 19m
Multiple Airlines
Wed 11/182:00 pm
SYD
- SEA
2 stops23h 26m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$957
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 11/511:06 am
SEA
- SYD
1 stop24h 19m
Multiple Airlines
Mon 11/162:00 pm
SYD
- SEA
2 stops23h 26m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$962
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 11/511:06 am
SEA
- SYD
1 stop24h 19m
Multiple Airlines
Tue 11/172:00 pm
SYD
- SEA
2 stops23h 26m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$968
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Tue 11/311:06 am
SEA
- SYD
1 stop24h 19m
Multiple Airlines
Mon 11/162:00 pm
SYD
- SEA
2 stops23h 26m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$971
This FlightHub deal was found by Cheapflights users on 7/22. 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 8/104:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Tue 8/1811:45 am
SYD
- SEA
2 stops23h 47m
ANA
Deal found 7/22![ANA logo]()
$973
This Gotogate deal was found by Cheapflights users on 7/23. 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.
Mon 8/34:30 pm
SEA
- SYD
1 stop23h 55m
ANA
Tue 8/188:55 pm
SYD
- SEA
1 stop34h 30m
ANA
Deal found 7/23![ANA logo]()
$974
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Tue 11/311:06 am
SEA
- SYD
1 stop24h 19m
Multiple Airlines
Tue 11/172:00 pm
SYD
- SEA
2 stops23h 26m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$977
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Tue 11/311:06 am
SEA
- SYD
1 stop24h 19m
Multiple Airlines
Wed 11/182:00 pm
SYD
- SEA
2 stops23h 26m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$979
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 10/242:26 pm
SEA
- OOL
2 stops26h 14m
American Airlines
Fri 10/308:20 am
OOL
- SEA
2 stops25h 28m
American Airlines
Deal found 7/26![American Airlines logo]()
$1,246
This United Airlines deal was found by Cheapflights users on 7/26. 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
SEA
- OOL
3 stops31h 35m
United Airlines
Fri 10/306:00 am
OOL
- SEA
2 stops27h 27m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,338
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 12/27:00 am
SEA
- OOL
2 stops39h 25m
Multiple Airlines
Sun 12/65:10 pm
OOL
- SEA
2 stops20h 50m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$1,364
Best flights from Seattle to New South WalesDiscover carefully curated flight deals from Seattle to New South Wales that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
Discover carefully curated flight deals from Seattle to New South Wales that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
This United Airlines deal was found by Cheapflights users on 7/25. 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 12/17:32 pm
SEA
- SYD
1 stop18h 48m
United Airlines
Sun 12/139:15 am
SYD
- SEA
1 stop32h 23m
United Airlines
Deal found 7/25![United Airlines logo]()
$1,089
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Sat 10/242:26 pm
SEA
- OOL
2 stops26h 14m
American Airlines
Fri 10/308:20 am
OOL
- SEA
2 stops25h 28m
American Airlines
Deal found 7/27![American Airlines logo]()
$1,246
This Trip.com deal was found by Cheapflights users on 7/23. 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 9/65:10 pm
SEA
- NTL
2 stops29h 00m
Multiple Airlines
Sun 9/138:35 am
NTL
- SEA
2 stops46h 04m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$1,367
This Qantas Airways deal was found by Cheapflights users on 7/25. 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.
Thu 8/205:10 pm
SEA
- OOL
2 stops29h 45m
Qantas Airways
Mon 8/246:00 pm
OOL
- SEA
2 stops42h 39m
Qantas Airways
Deal found 7/25![Qantas Airways logo]()
$1,388
This Delta deal was found by Cheapflights users on 7/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:45 am
SEA
- SYD
2 stops30h 05m
Delta
Tue 1/122:15 pm
SYD
- SEA
2 stops23h 15m
Delta
Deal found 7/26![Delta logo]()
$1,732
This Flightnetwork deal was found by Cheapflights users on 7/23. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/69:05 am
SEA
- NTL
3 stops42h 50m
Air New Zealand
Sun 9/136:00 am
NTL
- SEA
3 stops29h 29m
Air New Zealand
Deal found 7/23![Air New Zealand logo]()
$1,911
This Qatar Airways deal was found by Cheapflights users on 7/26. 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.
Sun 8/164:25 pm
SEA
- NTL
2 stops36h 00m
Qatar Airways
Thu 8/2011:30 am
NTL
- SEA
2 stops42h 15m
Qatar Airways
Deal found 7/26![Qatar Airways logo]()
$1,998
This United Airlines deal was found by Cheapflights users on 7/26. 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 10/313:49 pm
SEA
- SYD
2 stops45h 11m
United Airlines
Tue 11/109:20 am
SYD
- SEA
2 stops27h 34m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,093
This United Airlines deal was found by Cheapflights users on 7/26. 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 9/111:03 am
SEA
- SYD
2 stops26h 57m
United Airlines
Tue 9/89:30 am
SYD
- SEA
2 stops25h 22m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,093
This Air Tahiti Nui deal was found by Cheapflights users on 7/26. 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 Tahiti Nui is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:45 pm
SEA
- SYD
3 stops50h 55m
Air Tahiti Nui
Tue 11/108:55 am
SYD
- SEA
2 stops28h 02m
Air Tahiti Nui
Deal found 7/26![Air Tahiti Nui logo]()
$2,448
This Qantas Airways deal was found by Cheapflights users on 7/26. 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 11/41:35 pm
SEA
- DBO
2 stops25h 15m
Qantas Airways
Sun 11/81:25 pm
DBO
- SEA
2 stops40h 27m
Qantas Airways
Deal found 7/26![Qantas Airways logo]()
$1,389
This United Airlines deal was found by Cheapflights users on 7/22. 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 10/112:16 pm
SEA
- SYD
1 stop25h 44m
United Airlines
Thu 10/1510:30 am
SYD
- SEA
2 stops25h 07m
United Airlines
Deal found 7/22![United Airlines logo]()
$1,200
This Bravofly deal was found by Cheapflights users on 7/23. 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.
Mon 9/214:59 pm
SEA
- OOL
2 stops29h 06m
Multiple Airlines
Thu 9/2410:20 am
OOL
- SEA
2 stops43h 25m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$1,552
This United Airlines deal was found by Cheapflights users on 7/22. 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 11/146:51 pm
SEA
- SYD
2 stops43h 14m
United Airlines
Sat 11/2811:20 am
SYD
- SEA
2 stops29h 03m
United Airlines
Deal found 7/22![United Airlines logo]()
$1,325
This United Airlines deal was found by Cheapflights users on 7/26. 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
SEA
- OOL
3 stops31h 35m
United Airlines
Fri 10/306:00 am
OOL
- SEA
2 stops27h 27m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,338
This Qatar Airways deal was found by Cheapflights users on 7/25. 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 12/263:50 pm
SEA
- SYD
2 stops35h 35m
Qatar Airways
Sun 1/39:10 pm
SYD
- SEA
1 stop33h 30m
Qatar Airways
Deal found 7/25![Qatar Airways logo]()
$2,226
This Singapore Airlines deal was found by Cheapflights users on 7/26. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:15 am
SEA
- SYD
2 stops30h 15m
Multiple Airlines
Wed 10/143:50 pm
SYD
- SEA
3 stops47h 25m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$2,107
This Singapore Airlines deal was found by Cheapflights users on 7/22. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/282:30 pm
SEA
- SYD
2 stops33h 25m
Multiple Airlines
Thu 11/194:10 pm
SYD
- SEA
3 stops46h 13m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$2,254
Last-minute flights from Seattle to New South WalesDiscover last-minute flight deals from Seattle to New South Wales. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to New South Wales. Data last updated July 27, 2026 and is based on user searches.
This lastminute.com deal was found by Cheapflights users on 7/23. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/264:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Tue 8/1111:45 am
SYD
- SEA
2 stops23h 47m
ANA
Deal found 7/23![ANA logo]()
$927
This Gotogate deal was found by Cheapflights users on 7/23. 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.
Mon 8/34:30 pm
SEA
- SYD
1 stop23h 55m
ANA
Tue 8/188:55 pm
SYD
- SEA
1 stop34h 30m
ANA
Deal found 7/23![ANA logo]()
$974
This KAYAK deal was found by Cheapflights users on 7/22. 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 8/94:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Wed 8/1911:45 am
SYD
- SEA
2 stops23h 47m
ANA
Deal found 7/22![ANA logo]()
$1,014
This KAYAK deal was found by Cheapflights users on 7/22. 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 8/94:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Tue 8/188:55 pm
SYD
- SEA
1 stop34h 30m
ANA
Deal found 7/22![ANA logo]()
$1,021
This FlightHub deal was found by Cheapflights users on 7/22. 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 8/104:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Wed 8/1911:45 am
SYD
- SEA
2 stops23h 47m
ANA
Deal found 7/22![ANA logo]()
$973
This FlightHub deal was found by Cheapflights users on 7/22. 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 8/104:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Tue 8/188:55 pm
SYD
- SEA
1 stop34h 30m
ANA
Deal found 7/22![ANA logo]()
$986
This Qatar Airways deal was found by Cheapflights users on 7/26. 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.
Sun 8/164:25 pm
SEA
- NTL
2 stops36h 00m
Qatar Airways
Thu 8/2011:30 am
NTL
- SEA
2 stops42h 15m
Qatar Airways
Deal found 7/26![Qatar Airways logo]()
$1,998
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/174:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Mon 8/318:55 pm
SYD
- SEA
2 stops40h 48m
ANA
Deal found 7/26![ANA logo]()
$1,018
This Qantas Airways deal was found by Cheapflights users on 7/25. 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.
Thu 8/205:10 pm
SEA
- OOL
2 stops29h 45m
Qantas Airways
Mon 8/246:00 pm
OOL
- SEA
2 stops42h 39m
Qantas Airways
Deal found 7/25![Qantas Airways logo]()
$1,388
This Justfly.com deal was found by Cheapflights users on 7/23. 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.
Wed 8/264:30 pm
SEA
- SYD
1 stop23h 55m
ANA
Wed 9/211:45 am
SYD
- SEA
2 stops25h 58m
ANA
Deal found 7/23![ANA logo]()
$991
One-way flights from Seattle to New South WalesSearch for one-way flight options from Seattle to New South Wales. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
Search for one-way flight options from Seattle to New South Wales. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 11/211:06 am
SEA
- SYD
2 stops38h 09m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$519
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Sat 9/262:15 pm
SEA
- SYD
3 stops48h 15m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$550
This SmartFares deal was found by Cheapflights users on 7/22. 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.
Fri 8/214:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Deal found 7/22![ANA logo]()
$561
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Sat 10/175:59 pm
SEA
- SYD
3 stops44h 36m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$562
This United Airlines deal was found by Cheapflights users on 7/23. 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 9/2212:05 pm
SEA
- SYD
1 stop25h 55m
United Airlines
Deal found 7/23![United Airlines logo]()
$564
This oojo deal was found by Cheapflights users on 7/24. 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 10/181:37 pm
SEA
- SYD
1 stop24h 28m
Qantas Airways
Deal found 7/24![Qantas Airways logo]()
$565
This United Airlines deal was found by Cheapflights users on 7/24. 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 10/188:30 am
SEA
- SYD
2 stops29h 30m
United Airlines
Deal found 7/24![United Airlines logo]()
$569
This United Airlines deal was found by Cheapflights users on 7/23. 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 9/2611:13 pm
SEA
- SYD
2 stops38h 47m
United Airlines
Deal found 7/23![United Airlines logo]()
$570
This Justfly.com deal was found by Cheapflights users on 7/22. 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.
Thu 8/204:30 pm
SEA
- SYD
1 stop33h 40m
ANA
Deal found 7/22![ANA logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/135:20 pm
SEA
- SYD
2 stops32h 50m
ANA
Deal found 7/26![ANA logo]()
$572
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Fri 10/309:36 pm
SEA
- SYD
3 stops53h 14m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$573
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Fri 12/112:10 pm
SEA
- OOL
2 stops47h 30m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$844
Find flight deals from Seattle to New South Wales
Keep the following information in mind while searching for Seattle to New South Wales flight deals. Data was last updated July 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $957 (Kiwi.com) |
One-way from | $519 (Kiwi.com) |
Popular in | December |
Cheapest in | August |
Average price | $1,298 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to New South Wales 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 July 27, 2026.
Use the filters below to find and compare flights from Seattle to New South Wales that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Tue 12/1
7:32 pm-9:20 am
1 stop18h 48m
Sydney Kingsford Smith
Sun 12/13
9:15 am-10:38 pm
1 stop32h 23m
$1,089
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Sat 10/31
3:49 pm-7:00 am
2 stops45h 11m
Sydney Kingsford Smith
Tue 11/10
9:20 am-5:54 pm
2 stops27h 34m
$1,093
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Tue 9/1
11:03 am-7:00 am
2 stops26h 57m
Sydney Kingsford Smith
Tue 9/8
9:30 am-5:52 pm
2 stops25h 22m
$1,093
Quickest round-trip
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Thu 10/1
12:16 pm-7:00 am
1 stop25h 44m
Sydney Kingsford Smith
Thu 10/15
10:30 am-5:37 pm
2 stops25h 07m
$1,200
SeattleCoolangatta
SEA - OOL
SEAOOL
Seattle/Tacoma Intl
Sat 10/24
2:26 pm-9:40 am
2 stops26h 14m
Coolangatta Gold Coast
Fri 10/30
8:20 am-4:48 pm
2 stops25h 28m
$1,246
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Sat 11/14
6:51 pm-9:05 am
2 stops43h 14m
Sydney Kingsford Smith
Sat 11/28
11:20 am-9:23 pm
2 stops29h 03m
$1,325
SeattleCoolangatta
SEA - OOL
SEAOOL
Seattle/Tacoma Intl
Sat 10/24
9:05 am-9:40 am
3 stops31h 35m
Coolangatta Gold Coast
Fri 10/30
6:00 am-4:27 pm
2 stops27h 27m
$1,338
SeattleNewcastle
SEA - NTL
SEANTL
Seattle/Tacoma Intl
Sun 9/6
5:10 pm-3:10 pm
2 stops29h 00m
Newcastle Williamtown
Sun 9/13
8:35 am-1:39 pm
2 stops46h 04m
$1,367
SeattleCoolangatta
SEA - OOL
SEAOOL
Seattle/Tacoma Intl
Thu 8/20
5:10 pm-3:55 pm
2 stops29h 45m
Coolangatta Gold Coast
Mon 8/24
6:00 pm-7:39 pm
2 stops42h 39m
$1,388
SeattleDubbo
SEA - DBO
SEADBO
Seattle/Tacoma Intl
Wed 11/4
1:35 pm-9:50 am
2 stops25h 15m
Dubbo
Sun 11/8
1:25 pm-10:52 am
2 stops40h 27m
$1,389
Showing 1-10 of 28 resultsSorted by cheapest first
Best time to book a flight from Seattle to New South Wales
Have a flexible travel schedule? Discover the best time to fly to New South Wales from Seattle with our price prediction graph.
SEA-SYD
SEA-OOL
SEA-NTL
SEA-DBO
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.
Cheapflights Insights
Everything you need to know about your flight from Seattle to New South Wales
SEA-AUNSW
SEA-SYD
SEA-OOL
SEA-NTL
SEA-DBO
What is the cheapest month to book a flight from Seattle to New South Wales?
Currently, August is the cheapest month in which you can book a flight from Seattle to New South Wales (average of $735). Flying from Seattle to New South Wales in December is currently the most expensive (average of $1,659). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to New South Wales?
Airfare is typical for this route at the moment.
Seattle to New South Wales flights typically cost between $615 and $1,126 in November.The cheapest round-trip price found within the last 5 days was $957 on Multiple Airlines (Nov 5-Nov 18).
How far ahead should I book a flight from Seattle to New South Wales?
Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to New South Wales. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing New South Wales
Get insights into the airlines that provide service to New South Wales. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to New South Wales. Reviews last updated July 27, 2026.
Peruse reviews from past customers who have flown with ANA,Alaska Airlines, andDelta from Seattle to New South Wales to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.3
Comfort
8.2
Boarding
8.5
Food
7.8
Crew
8.7
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
IAH - HND
Overall
8.3
Comfort
8.2
Boarding
8.5
Food
7.8
Crew
8.7
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
IAH - HND
Overall
8.3
Comfort
8.2
Boarding
8.5
Food
7.8
Crew
8.7
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
IAH - HND
Overall
8.3
Comfort
8.2
Boarding
8.5
Food
7.8
Crew
8.7
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
IAH - HND
Overall
8.3
Comfort
8.2
Boarding
8.5
Food
7.8
Crew
8.7
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
IAH - HND
Overall
8.3
Comfort
8.2
Boarding
8.5
Food
7.8
Crew
8.7
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
IAH - HND
Related info for your journey
Find useful and relevant information for your journey from Seattle to New South Wales. 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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Complete your trip
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Seattle and New South Wales flights
Browse other Seattle and New South Wales flight options. Last updated on July 27, 2026.
Popular flight searches
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Top 9 airlines flying from Seattle to New South Wales
Discover the top 9 airlines that operate flights from Seattle to New South Wales. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$583 | Average$632 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$778 | Average$1,075 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$803 | Average$1,083 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$804 | Average$1,126 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$813 | Average$899 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$827 | Average$1,358 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$833 | Average$1,195 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$842 | Average$1,223 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$947 | Average$1,276 | FlexibilityNo cancel fee | On-time78% |