Cheapest return SEA–SYD flights, July

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

Return flights

26 Jul - 06 Aug Delta
09 Jul - 23 Jul Air Canada
02 Jul - 21 Jul Air Canada
15 Jul - 29 Jul Alaska Airlines

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

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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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