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
09 Dec	United	direct
12 Dec	Air Canada
11 Dec	Alaska Airlines
14 Dec	Air Canada
30 Dec	Delta	direct
31 Dec	Delta	direct
28 Dec	Xiamen Airlines
29 Dec	Delta	direct

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 429€

One-Way flights