Cheapest return SFO–SYD flights, December

AirHint found the following cheapest return flights from San Francisco (SFO) to Sydney (SYD) in December 2026 (see full year).

Return flights

14 Dec - 09 Jan Fiji Airways
30 Dec - 15 Jan Fiji Airways
12 Dec - 19 Dec Fiji Airways
12 Dec - 21 Dec Air Canada
13 Dec - 20 Dec Fiji Airways
09 Dec - 05 Jan Delta
12 Dec - 24 Dec Air Canada
14 Dec - 03 Jan Fiji Airways
11 Dec - 27 Dec United direct
12 Dec - 21 Dec United direct
12 Dec - 29 Dec United direct
09 Dec - 04 Jan United direct
09 Dec - 05 Jan United direct
12 Dec - 24 Dec United direct
12 Dec - 20 Dec United direct
09 Dec - 03 Jan Fiji Airways
11 Dec - 03 Jan Fiji Airways
10 Dec - 03 Jan Alaska Airlines
09 Dec - 03 Jan Qantas direct

Also check the deals for one-way 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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