Cheapest return flights from San Francisco to Sydney in December from $819

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

06 Dec - 13 Dec Hawaiian Airlines
06 Dec - 24 Dec Hawaiian Airlines
02 Dec - 11 Dec Hawaiian Airlines
11 Dec - 10 Jan Hawaiian Airlines
05 Dec - 12 Dec Fiji Airways
25 Dec - 11 Jan Alaska Airlines
21 Dec - 01 Jan Fiji Airways
10 Dec - 01 Jan Fiji Airways
25 Dec - 01 Jan Alaska Airlines
06 Dec - 24 Dec United direct
05 Dec - 12 Dec United direct
10 Dec - 01 Jan United direct
25 Dec - 11 Jan United direct
06 Dec - 02 Jan Hawaiian Airlines
20 Dec - 10 Jan Fiji Airways
17 Dec - 06 Jan Fiji Airways
18 Dec - 31 Dec Hawaiian Airlines
16 Dec - 30 Dec ANA
18 Dec - 31 Dec United direct

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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney