Cheap Flights from Seattle, WA to Sydney from $511

One way Round trip

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On Cheapflightsplus.com you will find 1000 connecting flights from Seattle to Sydney. You can compare airfare deals from 33 airlines and multiple travel sites from $511, book and save on cheap plane tickets and last minute offers. Also check out SEA-SYD flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Seattle to Sydney Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $511 (one-way), $876 (round-trip).

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Best Flights from Seattle to Sydney Today

Take a look at the list of non stop flights and flights with layovers from Seattle to Sydney with the lowest price of $511. Take a look at the list of flights with layovers from Seattle to Sydney from $511. There’re no direct flights. The fastest connecting flight – 18h 20m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $524 Find flight	16:30 Seattle Seattle-Tacoma Intl	10:25+2 дня Sydney Kingsford Smith	23h 55m layover 3h 45m - Tokyo	All Nippon Airways	NH117 NH879
from $556 Find flight	08:05 Seattle Seattle-Tacoma Intl	07:05+2 дня Sydney Kingsford Smith	30h 0m layover 12h 5m - Los Angeles	Alaska Airlines	AS1306 QF4112
from $556 Find flight	07:00 Seattle Seattle-Tacoma Intl	07:05+2 дня Sydney Kingsford Smith	31h 5m layover 13h 10m - Los Angeles	Alaska Airlines	AS797 QF4112
from $556 Find flight	06:00 Seattle Seattle-Tacoma Intl	07:05+2 дня Sydney Kingsford Smith	32h 5m layover 14h 20m - Los Angeles	Alaska Airlines	AS1316 QF4112
from $557 Find flight	18:52 Seattle Seattle-Tacoma Intl	07:05+2 дня Sydney Kingsford Smith	19h 13m layover 1h 17m - Los Angeles	Qantas	QF3719 QF4112
from $557 Find flight	18:52 Seattle Seattle-Tacoma Intl	07:05+2 дня Sydney Kingsford Smith	19h 13m layover 1h 17m - Los Angeles	Alaska Airlines	AS370 QF4112
from $557 Find flight	17:43 Seattle Seattle-Tacoma Intl	07:05+2 дня Sydney Kingsford Smith	20h 22m layover 2h 27m - Los Angeles	Alaska Airlines	AS1468 QF4112
from $511 Find flight	13:45 Seattle Seattle-Tacoma Intl	19:15+2 дня Sydney Kingsford Smith	36h 30m layover 1h 52m - Vancouver 13h 35m - Tokyo	All Nippon Airways	NH5391 NH115 NH889
from $540 Find flight	19:34 Seattle Seattle-Tacoma Intl	19:15+2 дня Sydney Kingsford Smith	30h 41m layover 3h 55m - San Francisco 4h 5m - Tokyo	All Nippon Airways	NH7305 NH107 NH889
from $545 Find flight	19:15 Seattle Seattle-Tacoma Intl	19:40+2 дня Sydney Kingsford Smith	31h 25m layover 2h 57m - Vancouver 11h 0m - Brisbane	Air Canada	AC8809 AC35 AC2754
from $545 Find flight	14:55 Seattle Seattle-Tacoma Intl	19:40+2 дня Sydney Kingsford Smith	35h 45m layover 7h 17m - Vancouver 11h 0m - Brisbane	Air Canada	AC8807 AC35 AC2754
from $545 Find flight	05:30 Seattle Seattle-Tacoma Intl	10:40+2 дня Sydney Kingsford Smith	36h 10m layover 16h 42m - Vancouver 2h 0m - Brisbane	Air Canada	AC8801 AC35 AC2804
from $545 Find flight	05:30 Seattle Seattle-Tacoma Intl	11:10+2 дня Sydney Kingsford Smith	36h 40m layover 16h 42m - Vancouver 2h 30m - Brisbane	Air Canada	AC8801 AC35 AC2718
from $545 Find flight	13:45 Seattle Seattle-Tacoma Intl	19:40+2 дня Sydney Kingsford Smith	36h 55m layover 8h 27m - Vancouver 11h 0m - Brisbane	Air Canada	AC8805 AC35 AC2754
from $545 Find flight	10:00 Seattle Seattle-Tacoma Intl	19:40+2 дня Sydney Kingsford Smith	40h 40m layover 12h 12m - Vancouver 11h 0m - Brisbane	Air Canada	AC8803 AC35 AC2754
from $545 Find flight	05:30 Seattle Seattle-Tacoma Intl	19:40+2 дня Sydney Kingsford Smith	45h 10m layover 16h 42m - Vancouver 11h 0m - Brisbane	Air Canada	AC8801 AC35 AC2754

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on August 18, 2025

Flight Schedule Seattle (Washington) to Sydney

Full flight schedule will help you in detecting at what time planes fly from Seattle to Sydney. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
05:00 — 06:55 +2 days	05:00 — 07:15 UA5657 United Airlines Seattle — San Francisco 15h 45m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	32h 55m including layover	Find flight from$572
05:10 — 06:55 +2 days	05:10 — 07:22 UA706 United Airlines Seattle — San Francisco 15h 38m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	32h 45m including layover	Find flight from$577
06:00 — 07:05 +2 days	06:00 — 08:35 AS1316 Alaska Airlines Seattle — Los Angeles 14h 20m stop 22:55 — 07:05 QF4112 Qantas Los Angeles — Sydney	32h 5m including layover	Find flight from$556
06:45 — 07:00 +2 days	06:45 — 09:29 UA1681 United Airlines Seattle — Los Angeles 13h 16m stop 22:45 — 07:00 UA839 United Airlines Los Angeles — Sydney	31h 15m including layover	Find flight from$572
07:00 — 07:05 +2 days	07:00 — 09:45 AS797 Alaska Airlines Seattle — Los Angeles 13h 10m stop 22:55 — 07:05 QF4112 Qantas Los Angeles — Sydney	31h 5m including layover	Find flight from$556
07:00 — 06:05 +2 days	07:00 — 09:15 AS556 Alaska Airlines Seattle — San Francisco 12h 45m stop 22:00 — 06:05 QF74 Qantas San Francisco — Sydney	30h 5m including layover	Find flight from$567
08:05 — 07:05 +2 days	08:05 — 10:50 AS1306 Alaska Airlines Seattle — Los Angeles 12h 5m stop 22:55 — 07:05 QF4112 Qantas Los Angeles — Sydney	30h including layover	Find flight from$556
08:08 — 06:05 +2 days	08:08 — 10:22 AS1166 Alaska Airlines Seattle — San Francisco 11h 28m stop 22:00 — 06:05 QF74 Qantas San Francisco — Sydney	28h 57m including layover	Find flight from$570
09:05 — 06:55 +2 days	09:05 — 11:28 UA5707 United Airlines Seattle — San Francisco 11h 32m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	28h 50m including layover	Find flight from$573
09:50 — 06:55 +2 days	09:45 — 12:01 UA1470 United Airlines Seattle — San Francisco 10h 51m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	28h 5m including layover	Find flight from$571
10:17 — 07:30 +2 days	10:17 — 13:10 AS505 Alaska Airlines Seattle — Los Angeles 10h stop 23:10 — 07:30 QF12 Qantas Los Angeles — Sydney	28h 13m including layover	Find flight from$566
10:49 — 07:30 +2 days	10:49 — 13:38 F91178 Frontier Airlines Seattle — Los Angeles 9h 32m stop 23:10 — 07:30 QF12 Qantas Los Angeles — Sydney	27h 41m including layover	Find flight from$634
11:30 — 06:05 +2 days	11:30 — 13:46 AS1112 Alaska Airlines Seattle — San Francisco 8h 14m stop 22:00 — 06:05 QF74 Qantas San Francisco — Sydney	25h 35m including layover	Find flight from$570
12:00 — 07:05 +2 days	12:00 — 14:46 AS1144 Alaska Airlines Seattle — Los Angeles 8h 9m stop 22:55 — 07:05 QF4112 Qantas Los Angeles — Sydney	26h 5m including layover	Find flight from$558
12:00 — 07:30 +2 days	12:00 — 14:46 AS1144 Alaska Airlines Seattle — Los Angeles 8h 13m stop 23:10 — 07:30 QF12 Qantas Los Angeles — Sydney	26h 30m including layover	Find flight from$563
13:40 — 06:05 +2 days	13:40 — 15:51 AS1304 Alaska Airlines Seattle — San Francisco 6h 9m stop 22:00 — 06:05 QF74 Qantas San Francisco — Sydney	23h 25m including layover	Find flight from$564
14:30 — 07:05 +2 days	14:30 — 17:15 AS1300 Alaska Airlines Seattle — Los Angeles 5h 40m stop 22:55 — 07:05 QF4112 Qantas Los Angeles — Sydney	23h 35m including layover	Find flight from$557
14:40 — 07:05 +2 days	14:40 — 17:34 QF4623 Qantas Seattle — Los Angeles 5h 21m stop 22:55 — 07:05 QF4112 Qantas Los Angeles — Sydney	23h 25m including layover	Find flight from$557
15:23 — 06:55 +2 days	14:29 — 16:45 UA325 United Airlines Seattle — San Francisco 5h 21m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	22h 32m including layover	Find flight from$566
15:46 — 06:05 +2 days	11:29 — 13:43 AS1284 Alaska Airlines Seattle — San Francisco 2h 59m stop 22:00 — 06:05 QF74 Qantas San Francisco — Sydney	20h 19m including layover	Find flight from$570
16:30 — 10:25 +2 days	16:30 — 19:00 NH117 All Nippon Airways Seattle — Tokyo 3h 45m stop 22:45 — 09:25 NH879 All Nippon Airways Tokyo — Sydney	23h 55m including layover	Find flight from$524
16:30 — 20:15 +2 days	16:30 — 19:00 NH117 All Nippon Airways Seattle — Tokyo 13h 35m stop 08:35 — 19:15 NH889 All Nippon Airways Tokyo — Sydney	33h 45m including layover	Find flight from$528
17:43 — 07:05 +2 days	17:43 — 20:28 AS1468 Alaska Airlines Seattle — Los Angeles 2h 27m stop 22:50 — 07:05 QF4112 Qantas Los Angeles — Sydney	20h 22m including layover	Find flight from$557
17:43 — 07:30 +2 days	17:43 — 20:28 AS1468 Alaska Airlines Seattle — Los Angeles 2h 42m stop 23:10 — 07:30 QF12 Qantas Los Angeles — Sydney	20h 47m including layover	Find flight from$558
18:52 — 07:05 +2 days	18:52 — 21:38 QF3719 Qantas Seattle — Los Angeles 1h 17m stop 22:50 — 07:05 QF4112 Qantas Los Angeles — Sydney	19h 13m including layover	Find flight from$557
18:52 — 07:05 +2 days	18:52 — 21:38 AS370 Alaska Airlines Seattle — Los Angeles 1h 17m stop 22:50 — 07:05 QF4112 Qantas Los Angeles — Sydney	19h 13m including layover	Find flight from$557
19:34 — 06:55 +2 days	19:34 — 21:50 UA1944 United Airlines Seattle — San Francisco 1h 10m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	18h 21m including layover	Find flight from$571
19:35 — 06:55 +2 days	19:35 — 21:49 UA2632 United Airlines Seattle — San Francisco 1h 11m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	18h 20m including layover	Find flight from$566
23:35 — 08:00 +3 days	22:35 — 04:45 PR125 Philippine Airlines Seattle — Manila 17h 10m stop 22:20 — 09:30 PR211 Philippine Airlines Manila — Sydney	39h 25m including layover	Find flight from$648

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on August 18, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Seattle to Sydney depends on and how to choose the most interesting flight option for you.

Distance between Seattle and Sydney is 12472 miles. Time difference between the cities is 6h. Airplanes depart 00:20 to 23:59 from 3 Seattle airports and arrive 00:20 to 23:59 to 5 Sydney airports. Average flight time is 32h 10m.

The fastest flight 18h 20m
Average flight time 32h 10m
The earliest flight 00:20
The latest flight 23:59
Distance 7750 ml

The cheapest months to travel to Sydney are july (from 508 $), june (from 522 $), august (from 524 $).

The most expensive months are january (from 1 399 $), december (from 839 $), november (from 813 $).

What is the lowest airfare Seattle to Sydney?

The cheapest plane ticket found by our users is $511. This airfare is for economy class on one-way NH5391 flight by All Nippon Airways for July 5, 2025 which leaves Seattle-Tacoma Intl in Seattle at 13:45 am and arrives at Sydney Kingsford Smith at 19:15.

Economy class

$511

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Business class

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First class

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Popular Airlines on the Route

The flight Seattle — Sydney is served by 33 regular airlines and 5 low-cost airlines. Most of the flights on this route are operated by Japan Airlines - JAL - 14 departures per week at the price of from $ 767 . And the most expensive tickets are offered by Air New Zealand Limited airline - from $ 6518.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 1000 flights with layovers on the route. The fastest connecting flight is UA2632 by United Airlines takes 18h 20m and the cheapest is NH5391 by All Nippon Airways for $511.

PR - Philippine Airlines

from $648

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JL - Japan Airlines - JAL

from $767

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FJ - Air Pacific

from $739

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UA - United Airlines

from $566

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NZ - Air New Zealand Limited

from $1017

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HU - Hainan Airlines

from $996

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JX - Jambojet

from $675

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BR - EVA Airways Corporation

from $695

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QF - Qantas

from $557

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KE - Korean Air

from $650

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MH - Malaysia Airlines

from $2363

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WS - WestJet

from $1082

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See more connecting flights

Airports

You can fly from Seattle to Sydney from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

Boeing Field International Airport-BFI

from $1220
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Seattle-Tacoma Intl-SEA

from $511
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Kenmore Air Harbor SPB-LKE

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Sydney airports

Bankstown-BWU

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Palm Beach SPB-LBH

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Rose Bay-RSE

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Kingsford Smith-SYD

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Sydney West-SWZ

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Airplanes

There are flights to Sydney from Seattle by 33 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Seattle

You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.

Seattle — Washington D.C.

from $78

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Seattle — Las Vegas

from $62

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Seattle — New York

from $180

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Seattle — Chicago

from $73

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Seattle — Phoenix

from $67

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Seattle — San Diego

from $74

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Seattle — Los Angeles

from $53

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Seattle — Denver

from $243

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Seattle — Dallas

from $72

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Seattle — Boston

from $63

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Top International Destinations from Seattle

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

Seattle — Tokyo

from $77

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Seattle — London

from $70

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Seattle — Vancouver

from $57

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Seattle — Cancun

from $63

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Seattle — Paris

from $66

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Seattle — Toronto

from $64

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Seattle — Calgary

from $76

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Seattle — Mumbai

from $80

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Seattle — Montreal

from $68

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Seattle — Amsterdam

from $64

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How to book a plane ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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