Cheapest return flights from San Jose to Sydney in December from $1914

AirHint found the following cheapest return flights from San Jose (SJO) to Sydney (SYD) in December 2025 (see full year).

Return flights

10 Dec - 24 Dec United
16 Dec - 26 Dec Alaska Airlines
30 Dec - 04 Jan United

Also check the deals for one-way flights from San Jose to Sydney in December.

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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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