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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 December 2025 , January 2026

30 Dec - 24 Jan $ 1,831.00
BFI
Seattle
Air Excursions
2 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
30 Dec - 31 Jan $ 1,834.00
BFI
Seattle
Air Excursions
2 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
30 Dec - 27 Jan $ 1,856.00
BFI
Seattle
Air Excursions
2 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
3 STOPS
BFI
Seattle
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Last minute flights from Seattle to Sydney

29 Dec - 02 Jan $ 2,538.00
BFI
Seattle
Air Excursions
3 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
29 Dec - 02 Jan $ 2,572.00
BFI
Seattle
Air Excursions
3 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
29 Dec - 02 Jan $ 2,581.00
BFI
Seattle
Air Excursions
3 STOPS
SYD
Sydney
SYD
Sydney
Air Excursions
3 STOPS
BFI
Seattle
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One-way flights to Sydney from Seattle

9:35 AM - 9:25 PM
Qantas
2 Stops
26h 50m
BFI - SYD
$ 971
Kiwi
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9:35 AM - 7:35 AM
Jetstar Airways
3 Stops
29h 35m
BFI - SYD
$ 1,101
Kiwi
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9:35 AM - 7:05 AM
Virgin Australia Airlines
3 Stops
29h 5m
BFI - SYD
$ 1,110
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.