AirHint found the following cheapest return flights from Sydney (SYD) to Los Angeles (LAX) in December 2025 (see full year).

Return flights

01 Dec - 08 Dec	Fiji Airways
11 Dec - 16 Dec	Air Canada
03 Dec - 11 Dec	Air Canada
04 Dec - 11 Dec	Air Canada
04 Dec - 08 Dec	Air Canada
09 Dec - 16 Dec	American Airlines	direct
11 Dec - 16 Dec	Qantas	direct
09 Dec - 14 Dec	Qantas	direct
10 Dec - 16 Dec	Qantas	direct
10 Dec - 29 Dec	Qantas	direct
05 Dec - 28 Jan	Fiji Airways
10 Dec - 28 Jan	Qantas	direct
11 Dec - 25 Jan	Qantas	direct
10 Dec - 18 Jan	Qantas	direct
11 Dec - 20 Jan	Qantas	direct
02 Dec - 24 Jan	Qantas	direct
10 Dec - 17 Jan	Qantas	direct
05 Dec - 28 Jan	Qantas	direct
11 Dec - 24 Jan	Qantas	direct
07 Dec - 18 Jan	Qantas	direct

Also check the deals for one-way flights from Sydney to Los Angeles in December.

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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Cheapest return flights from Sydney to Los Angeles in December from $601

Return flights