Cheap Flights from Seattle, WA to Sydney from $530

Return flight: Sydney – Seattle

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 $530, 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: $530 (one-way), $909 (round-trip).
Direct flights
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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
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$528
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$528
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$528
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$529
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$529
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$529
14:40 — 07:30
+2 days
14:40 — 17:34 QF4623 Qantas
Seattle — Los Angeles
5h 36m stop
23:10 — 07:30 QF12 Qantas
Los Angeles — Sydney
23h 50m
including layover
Find flight
from$530
16:00 — 07:05
+2 days
16:00 — 18:45 AS1092 Alaska Airlines
Seattle — Los Angeles
4h 10m stop
22:55 — 07:05 QF4112 Qantas
Los Angeles — Sydney
22h 5m
including layover
Find flight
from$529
16:00 — 07:05
+2 days
16:00 — 18:45 QF3744 Qantas
Seattle — Los Angeles
4h 10m stop
22:55 — 07:05 QF4112 Qantas
Los Angeles — Sydney
22h 5m
including layover
Find flight
from$529
16:00 — 07:30
+2 days
16:00 — 18:45 QF3744 Qantas
Seattle — Los Angeles
4h 25m stop
23:10 — 07:30 QF12 Qantas
Los Angeles — Sydney
22h 30m
including layover
Find flight
from$530
16:59 — 06:05
+2 days
16:59 — 19:10 AS1132 Alaska Airlines
Seattle — San Francisco
2h 50m stop
22:00 — 06:05 QF74 Qantas
San Francisco — Sydney
20h 6m
including layover
Find flight
from$530
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$529
17:59 — 07:05
+2 days
10:12 — 12:58 AS1048 Alaska Airlines
Seattle — Los Angeles
2h 5m stop
22:55 — 07:05 QF4112 Qantas
Los Angeles — Sydney
20h 6m
including layover
Find flight
from$529
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$529
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$529
*Departure and arrival times - local. Updated on September 12, 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

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 $ 728 . And the most expensive tickets are offered by Air New Zealand Limited airline - from $ 6189.

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.

  • PR - Philippine Airlines
    from $615
    Find
  • JL - Japan Airlines - JAL
    from $728
    Find
  • FJ - Air Pacific
    from $701
    Find
  • UA - United Airlines
    from $538
    Find
  • NZ - Air New Zealand Limited
    from $966
    Find
  • HU - Hainan Airlines
    from $946
    Find
  • JX - Jambojet
    from $641
    Find
  • BR - EVA Airways Corporation
    from $660
    Find
  • QF - Qantas
    from $529
    Find
  • KE - Korean Air
    from $617
    Find
  • MH - Malaysia Airlines
    from $4037
    Find
  • WS - WestJet
    from $1027
    Find
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 $1158
    Find
  • Seattle-Tacoma Intl-SEA
    from $486
    Find
  • Kenmore Air Harbor SPB-LKE
    Find

Sydney airports

  • Bankstown-BWU
    Find
  • Palm Beach SPB-LBH
    Find
  • Rose Bay-RSE
    Find
  • Kingsford Smith-SYD
    Find
  • Sydney West-SWZ
    Find

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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