Cheap Flights from Seattle, WA to Sydney from $513

One way Round trip

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On Cheapflightsplus.com you will find 536 connecting flights from Seattle to Sydney. You can compare airfare deals from 31 airlines and multiple travel sites from $513, 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: $513 (one-way), $880 (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 $513. Take a look at the list of flights with layovers from Seattle to Sydney from $513. There’re no direct flights. The fastest connecting flight – 18h 20m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $522 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	12:00 Seattle Seattle-Tacoma Intl	07:30+2 дня Sydney Kingsford Smith	26h 30m layover 8h 13m - Los Angeles	Alaska Airlines	AS1144 QF12
from $559 Find flight	17:15 Seattle Seattle-Tacoma Intl	07:30+2 дня Sydney Kingsford Smith	21h 15m layover 3h 10m - Los Angeles	Qantas	QF3738 QF12
from $561 Find flight	17:05 Seattle Seattle-Tacoma Intl	07:30+2 дня Sydney Kingsford Smith	21h 25m layover 3h 16m - Los Angeles	Alaska Airlines	AS1464 QF12
from $563 Find flight	18:09 Seattle Seattle-Tacoma Intl	07:30+2 дня Sydney Kingsford Smith	20h 21m layover 2h 10m - Los Angeles	Alaska Airlines	AS1048 QF12
from $563 Find flight	10:17 Seattle Seattle-Tacoma Intl	07:30+2 дня Sydney Kingsford Smith	28h 13m layover 10h 0m - Los Angeles	Alaska Airlines	AS505 QF12
from $513 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 $538 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 $555 Find flight	05:30 Seattle Seattle-Tacoma Intl	14:40+2 дня Sydney Kingsford Smith	40h 10m layover 11h 2m - Vancouver 11h 30m - Honolulu	Air Canada	AC8801 AC519 JQ4
from $560 Find flight	21:44 Seattle Seattle-Tacoma Intl	12:45+3 дня Sydney Kingsford Smith	45h 1m layover 23h 26m - San Francisco 4h 0m - Nadi	Hawaiian Airlines	HA6800 FJ871 FJ911
from $562 Find flight	21:40 Seattle Seattle-Tacoma Intl	11:45+3 дня Sydney Kingsford Smith	45h 5m layover 22h 57m - San Francisco 3h 40m - Nadi	Hawaiian Airlines	HA6897 FJ871 FJ911
from $563 Find flight	19:05 Seattle Seattle-Tacoma Intl	11:45+2 дня Sydney Kingsford Smith	23h 40m layover 2h 5m - San Francisco 4h 0m - Nadi	Hawaiian Airlines	HA6905 FJ871 FJ911
from $563 Find flight	17:05 Seattle Seattle-Tacoma Intl	11:45+2 дня Sydney Kingsford Smith	25h 40m layover 4h 6m - San Francisco 4h 0m - Nadi	Hawaiian Airlines	HA6895 FJ871 FJ911
from $563 Find flight	11:30 Seattle Seattle-Tacoma Intl	11:45+2 дня Sydney Kingsford Smith	31h 15m layover 9h 39m - San Francisco 4h 0m - Nadi	Hawaiian Airlines	HA6900 FJ871 FJ911
from $563 Find flight	11:23 Seattle Seattle-Tacoma Intl	11:45+2 дня Sydney Kingsford Smith	31h 22m layover 9h 49m - San Francisco 4h 0m - Nadi	Hawaiian Airlines	HA6553 FJ871 FJ911
from $563 Find flight	08:05 Seattle Seattle-Tacoma Intl	11:45+2 дня Sydney Kingsford Smith	34h 40m layover 13h 4m - San Francisco 4h 0m - Nadi	Hawaiian Airlines	HA6557 FJ871 FJ911

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on July 15, 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$570
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
06:45 — 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$570
06:45 — 07:00 +2 days	06:25 — 09:20 UA2127 United Airlines Seattle — Los Angeles 13h 10m stop 22:50 — 07:00 UA839 United Airlines Los Angeles — Sydney	31h 15m including layover	Find flight from$577
07:00 — 06:55 +2 days	07:00 — 09:19 UA2640 United Airlines Seattle — San Francisco 13h 41m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	30h 55m including layover	Find flight from$570
07:00 — 06:55 +2 days	07:00 — 09:20 UA714 United Airlines Seattle — San Francisco 13h 40m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	30h 55m including layover	Find flight from$577
08:00 — 06:05 +2 days	08:05 — 10:24 HA6903 Hawaiian Airlines Seattle — San Francisco 10h 36m stop 22:00 — 06:05 QF74 Qantas San Francisco — Sydney	28h 5m including layover	Find flight from$855
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$567
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$570
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$563
10:50 — 07:30 +2 days	10:49 — 13:38 F92176 Frontier Airlines Seattle — Los Angeles 9h 28m stop 23:10 — 07:30 QF12 Qantas Los Angeles — Sydney	27h 40m including layover	Find flight from$632
11:25 — 19:45 +2 days	11:25 — 14:40 AS8027 Alaska Airlines Seattle — Honolulu 22h 45m stop 12:45 — 19:45 AS8451 Alaska Airlines Honolulu — Sydney	39h 20m including layover	Find flight from$782
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$567
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$556
12:52 — 06:55 +2 days	12:52 — 15:07 UA1482 United Airlines Seattle — San Francisco 7h 53m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	25h 3m including layover	Find flight from$564
13:45 — 08:20 +2 days	13:45 — 14:50 AC8805 Air Canada Seattle — Vancouver 7h 49m stop 22:40 — 07:20 AC33 Air Canada Vancouver — Sydney	24h 35m including layover	Find flight from$874
14:50 — 06:55 +2 days	14:50 — 17:12 UA5482 United Airlines Seattle — San Francisco 5h 48m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	23h 5m including layover	Find flight from$571
14:50 — 06:55 +2 days	14:50 — 17:06 UA1620 United Airlines Seattle — San Francisco 5h 54m stop 23:00 — 06:55 UA863 United Airlines San Francisco — Sydney	23h 5m including layover	Find flight from$706
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$564
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$567
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$522
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$525
17:05 — 07:30 +2 days	17:05 — 19:54 AS1464 Alaska Airlines Seattle — Los Angeles 3h 16m stop 23:10 — 07:30 QF12 Qantas Los Angeles — Sydney	21h 25m including layover	Find flight from$561
17:15 — 07:30 +2 days	16:59 — 19:48 QF3738 Qantas Seattle — Los Angeles 3h 10m stop 23:10 — 07:30 QF12 Qantas Los Angeles — Sydney	21h 15m including layover	Find flight from$559
18:09 — 07:30 +2 days	10:12 — 12:58 AS1048 Alaska Airlines Seattle — Los Angeles 2h 10m stop 23:10 — 07:30 QF12 Qantas Los Angeles — Sydney	20h 21m including layover	Find flight from$563
18:09 — 07:05 +2 days	10:12 — 12:58 AS1048 Alaska Airlines Seattle — Los Angeles 2h 15m stop 22:50 — 07:05 AS6973 Alaska Airlines Los Angeles — Sydney	19h 56m including layover	Find flight from$671
19:34 — 06:55 +2 days	12:40 — 14:59 UA737 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$570
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$564
20:40 — 19:45 +2 days	18:25 — 21:35 HA669 Hawaiian Airlines Seattle — Honolulu 13h 31m stop 12:45 — 19:45 HA451 Hawaiian Airlines Honolulu — Sydney	30h 5m including layover	Find flight from$761
20:47 — 19:45 +2 days	18:25 — 21:35 AS8169 Alaska Airlines Seattle — Honolulu 11h 56m stop 12:45 — 19:45 AS8451 Alaska Airlines Honolulu — Sydney	28h 58m including layover	Find flight from$782
21:15 — 07:30 +3 days	21:15 — 23:59 AS1292 Alaska Airlines Seattle — Los Angeles 22h 11m stop 22:10 — 07:30 QF12 Qantas Los Angeles — Sydney	40h 15m including layover	Find flight from$666
21:44 — 06:05 +3 days	21:44 — 23:59 HA6800 Hawaiian Airlines Seattle — San Francisco 22h 1m stop 22:00 — 06:05 QF74 Qantas San Francisco — Sydney	39h 21m including layover	Find flight from$875
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$645

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

*Departure and arrival times - local. Updated on July 15, 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 01:10 to 23:59 from 3 Seattle airports and arrive 01:10 to 23:59 to 5 Sydney airports. Average flight time is 31h 40m.

The fastest flight 18h 20m
Average flight time 31h 40m
The earliest flight 01:10
The latest flight 23:59
Distance 7750 ml

The cheapest months to travel to Sydney are july (from 505 $), june (from 520 $), august (from 522 $).

The most expensive months are january (from 1 393 $), december (from 835 $), november (from 810 $).

What is the lowest airfare Seattle to Sydney?

The cheapest plane ticket found by our users is $513. This airfare is for economy class on one-way NH5391 flight by All Nippon Airways for July 25, 2025 which leaves Seattle-Tacoma Intl in Seattle at 13:45 am and arrives at Sydney Kingsford Smith at 19:15.

Economy class

$513

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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 31 regular airline and 4 low-cost airlines. Most of the flights on this route are operated by Japan Airlines - JAL - 8 departures per week at the price of from $ 763 . And the most expensive tickets are offered by Air New Zealand Limited airline - from $ 6489.

Direct flights

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

Connecting Flights

There are 536 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 $513.

PR - Philippine Airlines

from $645

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JL - Japan Airlines - JAL

from $763

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FJ - Air Pacific

from $735

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UA - United Airlines

from $564

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NZ - Air New Zealand Limited

from $1013

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HU - Hainan Airlines

from $992

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JX - Jambojet

from $631

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BR - EVA Airways Corporation

from $692

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QF - Qantas

from $559

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KE - Korean Air

from $647

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MH - Malaysia Airlines

from $2352

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WS - WestJet

from $1179

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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 $1214
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Seattle-Tacoma Intl-SEA

from $513
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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 31 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

Find

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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