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Cheap flights from Seattle (BFI) to Sydney (SYD)

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0 Children (2~11)
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How to find the cheapest flight from Seattle (BFI) to Sydney (SYD)

How to find the cheapest flight from Seattle (BFI) to Sydney (SYD)
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How to find the cheapest flight from Seattle (BFI) to Sydney (SYD)
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How to find the cheapest flight from Seattle (BFI) to Sydney (SYD)
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Cheap flights from Seattle to Sydney in August , September 2026

30 Aug - 04 Sep $ 1,713.00
BFI
Seattle
Air Excursions
2 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
2 STOPS
BFI
Seattle
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30 Aug - 13 Sep $ 1,908.00
BFI
Seattle
Air Excursions
2 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
2 STOPS
BFI
Seattle
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27 Aug - 06 Sep $ 1,929.00
BFI
Seattle
Air Excursions
2 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
2 STOPS
BFI
Seattle
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Last minute flights from Seattle to Sydney

24 Aug - 31 Aug $ 2,388.00
BFI
Seattle
Air Excursions
2 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
3 STOPS
BFI
Seattle
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24 Aug - 31 Aug $ 2,401.00
BFI
Seattle
Air Excursions
2 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
26 Aug - 31 Aug $ 2,414.00
BFI
Seattle
Air Excursions
2 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
3 STOPS
BFI
Seattle
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One-way flights to Sydney from Seattle

3:05 PM - 12:00 PM
Alaska Airlines
2 Stops
34h 45m
BFI - SYD
$ 856
Kiwi
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2:45 PM - 11:30 PM
Qantas
2 Stops
23h 45m
BFI - SYD
$ 959
Kiwi
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2:45 PM - 11:30 PM
Qantas
2 Stops
23h 45m
BFI - SYD
$ 963
Kiwi
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How to find the cheapest flight from Seattle (BFI) to Sydney (SYD)

Related info for your journey
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How to find the cheapest flight from Seattle (BFI) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Seattle (BFI) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.