Cheapest one-way flights from Seattle to Sydney in August from 298€

AirHint found the following cheapest one-way flights from Seattle (SEA) to Sydney (SYD) in August 2025 (see full year).

One-Way flights

20 Aug Air Canada
07 Aug Air Canada
13 Aug Air Canada
27 Aug Air Canada
23 Aug Air Canada
17 Aug Air Canada
16 Aug Air Canada
08 Aug Air Canada

Also check the deals for return flights from Seattle to Sydney in August.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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