Cheapest return flights from San Francisco to Sydney in December from $1065

Best time to book flights for San Francisco (SFO) to Sydney (SYD) flights at AirHint

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

Return flights

01 Dec - 29 Dec Air Canada
06 Dec - 29 Dec Air Canada
01 Dec - 29 Dec United direct
25 Dec - 11 Jan Delta
25 Dec - 10 Jan Delta
21 Dec - 03 Jan Fiji Airways
25 Dec - 11 Jan United direct
10 Dec - 31 Dec Delta
17 Dec - 03 Jan Fiji Airways
16 Dec - 06 Jan Fiji Airways
15 Dec - 02 Jan Alaska Airlines
21 Dec - 05 Jan Fiji Airways
20 Dec - 03 Jan Fiji Airways
18 Dec - 31 Dec Alaska Airlines
19 Dec - 10 Jan Fiji Airways

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

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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