Cheapest return flights from Seattle to Sydney in April from 746€

AirHint found the following cheapest return flights from Seattle (SEA) to Sydney (SYD) in April 2026 (see full year).

Return flights

28 Apr - 11 May United
25 Apr - 08 May Delta

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

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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