Cheapest one-way flights from San Francisco to Sydney in December from $363

AirHint found the following cheapest one-way flights from San Francisco (SFO) to Sydney (SYD) in December 2025 (see full year).

One-Way flights

03 Dec Alaska Airlines
04 Dec Alaska Airlines
08 Dec China Southern
02 Dec Hawaiian Airlines
29 Dec United direct
03 Dec United direct
08 Dec United direct
07 Dec United direct
01 Dec Hawaiian Airlines
06 Dec United direct

Also check the deals for return flights from San Francisco 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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