Cheapest return flights from Seattle to Sydney in March from $859

Best time to book flights for Seattle (SEA) to Sydney (SYD) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to Sydney (SYD) in March 2025 (see full year).

Return flights

01 Mar - 07 Mar Alaska Airlines
20 Mar - 24 Mar Hawaiian Airlines
21 Mar - 31 Mar Alaska Airlines
07 Mar - 26 Mar Alaska Airlines

Also check the deals for one-way flights from Seattle to Sydney in March.

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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