Cheap Flights from Seattle, WA to Sydney from $599

Return flight: Sydney – Seattle

On Cheapflightsplus.com you will find 135 connecting flights from Seattle to Sydney. You can compare airfare deals from 21 airlines and multiple travel sites from $599, 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: $599 (one-way), $1027 (round-trip).
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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 Arrival Flight Details Flight Duration Price
00:10 — 12:10
+2 days
00:10 — 05:20 CI21 China Airlines
Seattle — Taipei
18h 30m stop
23:50 — 12:10 CI51 China Airlines
Taipei — Sydney
41h
including layover
Find flight
from$1102
05:45 — 09:35
+2 days
05:45 — 06:56 AC8801 Air Canada
Seattle — Vancouver
15h 48m stop
22:40 — 09:35 AC33 Air Canada
Vancouver — Sydney
32h 50m
including layover
Find flight
from$607
07:00 — 19:45
+1 day
08:15 — 12:35 HA21 Hawaiian Airlines
Seattle — Honolulu
55m stop
11:55 — 19:45 HA451 Hawaiian Airlines
Honolulu — Sydney
17h 45m
including layover
Find flight
from$599
07:00 — 19:45
+1 day
07:00 — 11:20 AS8021 Alaska Airlines
Seattle — Honolulu
55m stop
12:20 — 19:45 AS8451 Alaska Airlines
Honolulu — Sydney
17h 45m
including layover
Find flight
from$624
10:35 — 09:35
+2 days
10:35 — 11:46 AC8803 Air Canada
Seattle — Vancouver
10h 58m stop
22:40 — 09:35 AC33 Air Canada
Vancouver — Sydney
28h
including layover
Find flight
from$607
11:00 — 06:55
+2 days
11:00 — 15:55 KE42 Korean Air
Seattle — Seoul
2h 50m stop
18:45 — 06:55 KE401 Korean Air
Seoul — Sydney
24h 55m
including layover
Find flight
from$1542
11:21 — 19:45
+2 days
11:21 — 15:51 AS626 Alaska Airlines
Seattle — Honolulu
20h 19m stop
12:10 — 19:45 HA451 Hawaiian Airlines
Honolulu — Sydney
37h 24m
including layover
Find flight
from$3751
12:00 — 09:00
+2 days
11:40 — 14:27 AS1144 Alaska Airlines
Seattle — Los Angeles
7h 35m stop
22:40 — 09:00 AS6973 Alaska Airlines
Los Angeles — Sydney
26h
including layover
Find flight
from$1267
12:45 — 08:20
+2 days
12:40 — 17:50 OZ271 Asiana Airlines
Seattle — Seoul
2h 10m stop
20:00 — 08:20 OZ601 Asiana Airlines
Seoul — Sydney
24h 35m
including layover
Find flight
from$1135
13:45 — 06:55
+3 days
13:35 — 07:00 BA52 British Airways
Seattle — London
14h stop
21:10 — 06:55 BA15 British Airways
London — Sydney
46h 10m
including layover
Find flight
from$8838
15:05 — 09:35
+2 days
15:05 — 16:15 AC8807 Air Canada
Seattle — Vancouver
6h 28m stop
22:40 — 09:35 AC33 Air Canada
Vancouver — Sydney
23h 30m
including layover
Find flight
from$607
16:58 — 06:20
+2 days
16:58 — 19:10 UA2482 United Airlines
Seattle — San Francisco
1h stop
20:10 — 06:20 UA829 United Airlines
San Francisco — Sydney
18h 22m
including layover
Find flight
from$680
16:59 — 09:00
+2 days
16:56 — 19:45 AS1468 Alaska Airlines
Seattle — Los Angeles
2h 47m stop
22:40 — 09:00 AS6973 Alaska Airlines
Los Angeles — Sydney
21h 1m
including layover
Find flight
from$1267
18:50 — 06:55
+3 days
18:50 — 12:15 IB3506 Iberia
Seattle — London
8h 55m stop
21:10 — 06:55 BA15 British Airways
London — Sydney
41h 5m
including layover
Find flight
from$1868
18:50 — 06:55
+3 days
18:50 — 12:15 BA48 British Airways
Seattle — London
8h 55m stop
21:10 — 06:55 BA15 British Airways
London — Sydney
41h 5m
including layover
Find flight
from$8838
22:35 — 10:45
+3 days
22:35 — 04:45 PR125 Philippine Airlines
Seattle — Manila
18h 25m stop
23:10 — 10:45 5J39 CEBU Pacific Air
Manila — Sydney
41h 10m
including layover
Find flight
from$684
23:59 — 06:35
+3 days
23:59 — 05:47 AS576 Alaska Airlines
Seattle — Dallas
14h 38m stop
20:25 — 06:35 QF8 Qantas
Dallas — Sydney
35h 36m
including layover
Find flight
from$1357
05:45 — 13:40
+2 days
05:45 — 06:56 AC8801 Air Canada
Seattle — Vancouver
16h 58m stop
23:50 — 08:40 AC35 Air Canada
Vancouver — Brisbane
2h 25m stop
06:35 — 09:10 AC2718 Air Canada
Brisbane — Sydney
36h 55m
including layover
Find flight
from$627
06:00 — 17:40
+2 days
06:00 — 08:53 TN1170 Air Tahiti Nui
Seattle — Los Angeles
13h 53m stop
22:45 — 13:40 TN101 Air Tahiti Nui
Los Angeles — Auckland
2h 20m stop
16:00 — 17:40 TN1431 Air Tahiti Nui
Auckland — Sydney
40h 40m
including layover
Find flight
from$1092
06:00 — 20:40
+2 days
06:00 — 08:53 TN1170 Air Tahiti Nui
Seattle — Los Angeles
13h 53m stop
22:45 — 13:40 TN101 Air Tahiti Nui
Los Angeles — Auckland
5h 20m stop
19:00 — 20:40 TN1401 Air Tahiti Nui
Auckland — Sydney
43h 40m
including layover
Find flight
from$1092
10:35 — 13:40
+2 days
10:35 — 11:46 AC8803 Air Canada
Seattle — Vancouver
12h 8m stop
23:50 — 08:40 AC35 Air Canada
Vancouver — Brisbane
2h 25m stop
06:35 — 09:10 AC2718 Air Canada
Brisbane — Sydney
32h 5m
including layover
Find flight
from$627
15:05 — 13:40
+2 days
15:05 — 16:15 AC8807 Air Canada
Seattle — Vancouver
7h 38m stop
23:50 — 08:40 AC35 Air Canada
Vancouver — Brisbane
2h 25m stop
06:35 — 09:10 AC2718 Air Canada
Brisbane — Sydney
27h 35m
including layover
Find flight
from$627
21:31 — 19:45
+2 days
21:31 — 23:44 AS158 Alaska Airlines
Seattle — San Francisco
8h 1m stop
07:45 — 11:20 HA11 Hawaiian Airlines
San Francisco — Honolulu
50m stop
12:10 — 19:45 HA451 Hawaiian Airlines
Honolulu — Sydney
27h 14m
including layover
Find flight
from$651
21:44 — 19:45
+2 days
21:44 — 23:56 AS178 Alaska Airlines
Seattle — San Francisco
7h 49m stop
07:45 — 11:20 HA11 Hawaiian Airlines
San Francisco — Honolulu
50m stop
12:10 — 19:45 HA451 Hawaiian Airlines
Honolulu — Sydney
27h 1m
including layover
Find flight
from$651
22:59 — 19:45
+2 days
22:51 — 23:43 AS957 Alaska Airlines
Seattle — Portland
7h 7m stop
07:00 — 11:05 HA49 Hawaiian Airlines
Portland — Honolulu
1h 5m stop
12:20 — 19:45 HA451 Hawaiian Airlines
Honolulu — Sydney
25h 46m
including layover
Find flight
from$710
*Departure and arrival times - local. Updated on February 8, 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 00:10 to 23:59 from 3 Seattle airports and arrive 00:10 to 23:59 to 5 Sydney airports. Average flight time is 35h 5m.

  • The fastest flight 17h 45m
  • Average flight time 35h 5m
  • The earliest flight 00:10
  • The latest flight 23:59
  • Distance 7750 ml

The cheapest months to travel to Sydney are february (from 591 $), november (from 611 $), december (from 774 $).

The most expensive months are january (from 1 110 $), december (from 774 $), november (from 611 $).

What is the lowest airfare Seattle to Sydney?

The cheapest plane ticket found by our users is $599. This airfare is for economy class on one-way HA21 flight by Hawaiian Airlines for February 21, 2025 which leaves Seattle-Tacoma Intl in Seattle at 07:00 am and arrives at Sydney Kingsford Smith at 19:45.

Economy class
$599
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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 21 regular airline and 1 low-cost airline. Most of the flights on this route are operated by Air Canada - 25 departures per week at the price of from $ 607 . And the most expensive tickets are offered by British Airways airline - from $ 8838.

Direct flights

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

Connecting Flights

There are 135 flights with layovers on the route. The fastest connecting flight is HA21 by Hawaiian Airlines takes 17h 45m and the cheapest is HA21 by Hawaiian Airlines for $599.

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
    Find
  • Seattle-Tacoma Intl-SEA
    from $599
    Find
  • Kenmore Air Harbor SPB-LKE
    Find

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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How to book a plane ticket yourself?

How to book an air 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.

    To find a plane ticket, please select dates.

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