$404+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Mar 5 — Mar 121
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seattle to New South Wales 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to New South Wales
Cheapest
Best
Last-minute
One-way
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 February 3, 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 February 3, 2026.
This oojo deal was found by Cheapflights users on 2/3. 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.
Thu 9/1711:10 pm
SEA
- SYD
1 stop39h 50m
Philippine Airlines
Wed 9/3010:15 am
SYD
- SEA
1 stop26h 50m
Philippine Airlines
Deal found 2/3![Philippine Airlines logo]()
$790
This Philippine Airlines deal was found by Cheapflights users on 2/1. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2311:10 pm
SEA
- SYD
1 stop39h 50m
Philippine Airlines
Thu 9/310:15 am
SYD
- SEA
1 stop26h 50m
Philippine Airlines
Deal found 2/1![Philippine Airlines logo]()
$821
This Philippine Airlines deal was found by Cheapflights users on 2/1. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:10 pm
SEA
- SYD
1 stop39h 50m
Philippine Airlines
Thu 9/310:15 am
SYD
- SEA
1 stop26h 50m
Philippine Airlines
Deal found 2/1![Philippine Airlines logo]()
$851
This Gotogate deal was found by Cheapflights users on 2/2. 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 5/114:30 pm
SEA
- SYD
1 stop33h 45m
ANA
Mon 5/188:55 pm
SYD
- SEA
1 stop34h 30m
ANA
Deal found 2/2![ANA logo]()
$919
This Cheapflightsfares deal was found by Cheapflights users on 2/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/45:53 pm
SEA
- SYD
1 stop20h 07m
Qantas Airways
Fri 2/67:15 pm
SYD
- SEA
2 stops43h 03m
Qantas Airways
Deal found 2/1![Qantas Airways logo]()
$923
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 4/1810:42 am
SEA
- SYD
1 stop27h 48m
Multiple Airlines
Fri 5/81:15 pm
SYD
- SEA
2 stops36h 14m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$929
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 3/59:28 am
SEA
- SYD
1 stop26h 57m
Multiple Airlines
Thu 3/122:00 pm
SYD
- SEA
2 stops22h 57m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$931
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 4/2110:42 am
SEA
- SYD
1 stop27h 48m
Multiple Airlines
Wed 5/61:10 pm
SYD
- SEA
2 stops23h 43m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$932
This oojo deal was found by Cheapflights users on 2/2. 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 2/76:00 am
SEA
- SYD
1 stop32h 00m
Qantas Airways
Tue 2/247:15 pm
SYD
- SEA
2 stops42h 42m
Qantas Airways
Deal found 2/2![Qantas Airways logo]()
$934
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 5/210:42 am
SEA
- SYD
1 stop27h 48m
Multiple Airlines
Sun 5/101:15 pm
SYD
- SEA
2 stops36h 14m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$938
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/35:50 pm
SEA
- SYD
2 stops32h 00m
Qantas Airways
Tue 3/1011:20 am
SYD
- SEA
1 stop20h 39m
Qantas Airways
Deal found 2/2![Qantas Airways logo]()
$939
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 4/1810:42 am
SEA
- SYD
1 stop27h 48m
Multiple Airlines
Sun 5/101:15 pm
SYD
- SEA
2 stops36h 14m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$940
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 February 3, 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 February 3, 2026.
This Cathay Pacific deal was found by Cheapflights users on 2/2. 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.
Thu 4/2311:45 am
SEA
- SYD
1 stop27h 55m
Cathay Pacific
Wed 5/67:40 am
SYD
- SEA
1 stop43h 25m
Cathay Pacific
Deal found 2/2![Cathay Pacific logo]()
$1,041
This FlightHub deal was found by Cheapflights users on 2/1. 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.
Sat 5/24:30 pm
SEA
- OOL
2 stops52h 10m
ANA
Sun 5/178:20 am
OOL
- SEA
2 stops47h 05m
ANA
Deal found 2/1![ANA logo]()
$1,091
This Hawaiian Airlines deal was found by Cheapflights users on 2/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/28:00 am
SEA
- SYD
1 stop17h 50m
Alaska Airlines
Fri 7/178:45 pm
SYD
- SEA
1 stop18h 00m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$1,146
This United Airlines deal was found by Cheapflights users on 2/1. 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 6/305:30 pm
SEA
- SYD
1 stop20h 25m
United Airlines
Tue 7/219:30 am
SYD
- SEA
2 stops28h 40m
United Airlines
Deal found 2/1![United Airlines logo]()
$1,159
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
Thu 7/28:00 am
SEA
- SYD
1 stop17h 50m
Multiple Airlines
Sat 7/188:45 pm
SYD
- SEA
1 stop20h 14m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$1,168
This Qantas Airways deal was found by Cheapflights users on 1/31. 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 3/86:00 am
SEA
- OOL
2 stops39h 05m
Qantas Airways
Thu 3/126:00 am
OOL
- SEA
2 stops29h 53m
Qantas Airways
Deal found 1/31![Qantas Airways logo]()
$1,463
This Booking.com deal was found by Cheapflights users on 2/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/111:15 am
SEA
- OOL
3 stops54h 25m
Air Canada
Sun 5/316:00 am
OOL
- SEA
3 stops45h 20m
Air Canada
Deal found 2/2![Air Canada logo]()
$1,811
This Hawaiian Airlines deal was found by Cheapflights users on 2/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:00 am
SEA
- SYD
1 stop17h 50m
Alaska Airlines
Thu 7/238:45 pm
SYD
- SEA
1 stop18h 00m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$1,146
This United Airlines deal was found by Cheapflights users on 2/1. 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 6/295:00 pm
SEA
- SYD
1 stop21h 00m
United Airlines
Mon 7/2010:20 am
SYD
- SEA
1 stop23h 07m
United Airlines
Deal found 2/1![United Airlines logo]()
$1,159
This Jetabroad deal was found by Cheapflights users on 2/2. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:49 am
SEA
- OOL
2 stops32h 26m
Multiple Airlines
Sun 5/319:05 pm
OOL
- SEA
2 stops32h 51m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,254
This Hawaiian Airlines deal was found by Cheapflights users on 2/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:00 am
SEA
- SYD
1 stop17h 50m
Alaska Airlines
Fri 7/178:45 pm
SYD
- SEA
1 stop18h 00m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$1,146
This Hawaiian Airlines deal was found by Cheapflights users on 2/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:00 am
SEA
- SYD
1 stop17h 50m
Alaska Airlines
Sun 7/198:45 pm
SYD
- SEA
1 stop18h 00m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$1,146
This Hawaiian Airlines deal was found by Cheapflights users on 2/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:00 am
SEA
- SYD
1 stop17h 50m
Alaska Airlines
Tue 7/218:45 pm
SYD
- SEA
1 stop18h 00m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$1,146
This Qantas Airways deal was found by Cheapflights users on 2/1. 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.
Sat 2/2112:50 pm
SEA
- DBO
2 stops32h 35m
Qantas Airways
Wed 2/251:25 pm
DBO
- SEA
2 stops48h 33m
Qantas Airways
Deal found 2/1![Qantas Airways logo]()
$1,594
This Hawaiian Airlines deal was found by Cheapflights users on 2/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:00 am
SEA
- SYD
1 stop17h 50m
Alaska Airlines
Fri 7/178:45 pm
SYD
- SEA
1 stop18h 00m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$1,146
This Cathay Pacific deal was found by Cheapflights users on 2/1. 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.
Thu 3/196:25 am
SEA
- OOL
3 stops38h 40m
Cathay Pacific
Thu 3/2610:25 am
OOL
- SEA
3 stops46h 27m
Cathay Pacific
Deal found 2/1![Cathay Pacific logo]()
$1,681
This Air New Zealand deal was found by Cheapflights users on 2/1. 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 New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/23:53 pm
SEA
- OOL
2 stops25h 52m
Multiple Airlines
Sun 5/177:00 am
OOL
- SEA
3 stops28h 11m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$1,638
This Booking.com deal was found by Cheapflights users on 2/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:00 am
SEA
- OOL
3 stops35h 40m
Air Canada
Thu 3/266:00 am
OOL
- SEA
2 stops26h 01m
Air Canada
Deal found 2/1![Air Canada logo]()
$1,842
This Qantas Airways deal was found by Cheapflights users on 2/1. 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 5/134:12 pm
SEA
- NTL
2 stops28h 38m
Qantas Airways
Sun 5/1710:50 am
NTL
- SEA
2 stops53h 08m
Qantas Airways
Deal found 2/1![Qantas Airways logo]()
$1,699
This Hawaiian Airlines deal was found by Cheapflights users on 2/3. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/238:56 pm
SEA
- SYD
1 stop28h 54m
Alaska Airlines
Tue 7/78:45 pm
SYD
- SEA
1 stop18h 00m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$1,168
This Hawaiian Airlines deal was found by Cheapflights users on 2/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:35 am
SEA
- SYD
1 stop18h 15m
Alaska Airlines
Sun 5/178:45 pm
SYD
- SEA
1 stop18h 10m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$1,168
Last-minute flights from Seattle to New South WalesDiscover last-minute flight deals from Seattle to New South Wales. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to New South Wales. Data last updated February 3, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 2/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/45:53 pm
SEA
- SYD
1 stop20h 07m
Qantas Airways
Fri 2/67:15 pm
SYD
- SEA
2 stops43h 03m
Qantas Airways
Deal found 2/1![Qantas Airways logo]()
$923
This oojo deal was found by Cheapflights users on 2/2. 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 2/76:00 am
SEA
- SYD
1 stop32h 00m
Qantas Airways
Tue 2/247:15 pm
SYD
- SEA
2 stops42h 42m
Qantas Airways
Deal found 2/2![Qantas Airways logo]()
$934
This Qantas Airways deal was found by Cheapflights users on 2/1. 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.
Sat 2/144:50 pm
SEA
- SYD
1 stop21h 10m
Qantas Airways
Mon 3/27:15 pm
SYD
- SEA
2 stops37h 44m
Qantas Airways
Deal found 2/1![Qantas Airways logo]()
$961
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Sun 2/2210:03 am
SEA
- SYD
1 stop26h 22m
Multiple Airlines
Sun 3/82:00 pm
SYD
- SEA
2 stops36h 28m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$985
This Trip.com deal was found by Cheapflights users on 2/2. 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.
Mon 3/29:28 am
SEA
- SYD
2 stops40h 22m
Multiple Airlines
Mon 3/911:20 am
SYD
- SEA
1 stop23h 49m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$990
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/35:50 pm
SEA
- SYD
2 stops32h 00m
Qantas Airways
Tue 3/1011:20 am
SYD
- SEA
1 stop20h 39m
Qantas Airways
Deal found 2/2![Qantas Airways logo]()
$939
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 3/59:28 am
SEA
- SYD
1 stop26h 57m
Multiple Airlines
Thu 3/122:00 pm
SYD
- SEA
2 stops22h 57m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$931
This Jetabroad deal was found by Cheapflights users on 2/2. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/63:50 pm
SEA
- SYD
1 stop22h 10m
Multiple Airlines
Sun 3/87:15 pm
SYD
- SEA
2 stops44h 01m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$965
This Qantas Airways deal was found by Cheapflights users on 1/31. 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 3/86:00 am
SEA
- OOL
2 stops39h 05m
Qantas Airways
Thu 3/126:00 am
OOL
- SEA
2 stops29h 53m
Qantas Airways
Deal found 1/31![Qantas Airways logo]()
$1,463
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/113:50 pm
SEA
- SYD
1 stop21h 35m
Multiple Airlines
Wed 3/182:00 pm
SYD
- SEA
2 stops22h 51m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$945
This Expedia deal was found by Cheapflights users on 2/1. 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 3/197:35 am
SEA
- OOL
2 stops31h 00m
Multiple Airlines
Thu 3/262:50 pm
OOL
- SEA
2 stops27h 09m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$1,343
This oojo deal was found by Cheapflights users on 2/3. 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 3/2011:45 am
SEA
- OOL
2 stops36h 20m
Qantas Airways
Fri 3/2710:25 am
OOL
- SEA
2 stops27h 17m
Qantas Airways
Deal found 2/3![Qantas Airways logo]()
$1,389
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 February 3, 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 February 3, 2026.
This Trip.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:24 pm
SEA
- SYD
2 stops34h 01m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$404
This Trip.com deal was found by Cheapflights users on 2/1. 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 2/269:28 am
SEA
- SYD
2 stops32h 07m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$415
This Trip.com deal was found by Cheapflights users on 2/3. 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 5/810:42 am
SEA
- SYD
2 stops32h 03m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$423
This Trip.com deal was found by Cheapflights users on 2/2. 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 3/110:03 am
SEA
- SYD
2 stops31h 32m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$430
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 2/2811:32 am
SEA
- SYD
2 stops30h 03m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$450
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/255:55 pm
SEA
- SYD
2 stops24h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$480
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/37:33 pm
SEA
- SYD
3 stops46h 02m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$491
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:55 pm
SEA
- OOL
3 stops43h 35m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$582
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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $929 (Kiwi.com) |
One-way from | $404 (Trip.com) |
Popular in | December |
Cheapest in | August |
Average price | $900 |
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 February 3, 2026.
Use the filters below to find and compare flights from Seattle to New South Wales that are best for you.
Fly from
Seattle
Fly to
New South Wales
Route
Depart
Return
Price
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Thu 4/23
11:45 am-8:40 am
1 stop27h 55m
Sydney Kingsford Smith
Wed 5/6
7:40 am-10:05 am
1 stop43h 25m
$1,041
SeattleCoolangatta
SEA - OOL
SEAOOL
Seattle/Tacoma Intl
Sat 5/2
4:30 pm-1:40 pm
2 stops52h 10m
Coolangatta Gold Coast
Sun 5/17
8:20 am-2:25 pm
2 stops47h 05m
$1,091
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Thu 7/2
8:00 am-6:50 pm
1 stop17h 50m
Sydney Kingsford Smith
Fri 7/17
8:45 pm-9:45 pm
1 stop18h 00m
$1,146
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Sat 7/4
8:00 am-6:50 pm
1 stop17h 50m
Sydney Kingsford Smith
Thu 7/23
8:45 pm-9:45 pm
1 stop18h 00m
$1,146
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Sat 7/4
8:00 am-6:50 pm
1 stop17h 50m
Sydney Kingsford Smith
Fri 7/17
8:45 pm-9:45 pm
1 stop18h 00m
$1,146
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Mon 6/29
8:00 am-6:50 pm
1 stop17h 50m
Sydney Kingsford Smith
Sun 7/19
8:45 pm-9:45 pm
1 stop18h 00m
$1,146
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Mon 6/29
8:00 am-6:50 pm
1 stop17h 50m
Sydney Kingsford Smith
Tue 7/21
8:45 pm-9:45 pm
1 stop18h 00m
$1,146
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Mon 6/29
8:00 am-6:50 pm
1 stop17h 50m
Sydney Kingsford Smith
Fri 7/17
8:45 pm-9:45 pm
1 stop18h 00m
$1,146
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Tue 6/30
5:30 pm-6:55 am
1 stop20h 25m
Sydney Kingsford Smith
Tue 7/21
9:30 am-9:10 pm
2 stops28h 40m
$1,159
SeattleSydney
SEA - SYD
SEASYD
Seattle/Tacoma Intl
Mon 6/29
5:00 pm-7:00 am
1 stop21h 00m
Sydney Kingsford Smith
Mon 7/20
10:20 am-4:27 pm
1 stop23h 07m
$1,159
Showing 1-10 of 29 results
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-DBO
SEA-NTL
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-DBO
SEA-NTL
What is the cheapest month to book a flight from Seattle to New South Wales?
Currently, July is the cheapest month in which you can book a flight from Seattle to New South Wales (average of $513). Flying from Seattle to New South Wales in December is currently the most expensive (average of $845). 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.
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 February 3, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Qantas Airways 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.
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Alternative routes for Seattle to New South Wales
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to New South Wales by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to New South Wales by cabin class
Find flights from Seattle to New South Wales, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and New South Wales flights
Browse other Seattle and New South Wales flight options. Last updated on February 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$583 | Average$615 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$591 | Average$1,176 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$758 | Average$880 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$779 | Average$1,060 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$789 | Average$895 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$804 | Average$988 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$812 | Average$1,159 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$830 | Average$1,025 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$842 | Average$1,230 | FlexibilityNo cancel fee | On-timeN/A |