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

One-Way flights

01 Dec	Qantas	direct
03 Dec	Qantas	direct
08 Dec	United	direct
09 Dec	United	direct
06 Dec	United	direct
25 Dec	American Airlines
11 Dec	Air Canada
10 Dec	Air Canada
12 Dec	Air Canada
15 Dec	Air Canada

Also check the deals for return flights from Los Angeles to Sydney 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 one-way flights from Los Angeles to Sydney in December from $497

One-Way flights