AirHint found the following cheapest return flights from New York (JFK) to Sydney (SYD) in December 2025 (see full year).

Return flights

08 Dec - 15 Dec	ANA
12 Dec - 28 Dec	American Airlines
30 Dec - 13 Jan	Air Canada
05 Dec - 11 Jan	Qantas
27 Dec - 11 Jan	American Airlines
25 Dec - 30 Dec	American Airlines
05 Dec - 21 Dec	American Airlines
25 Dec - 08 Jan	Air Canada
25 Dec - 11 Jan	American Airlines
26 Dec - 10 Jan	American Airlines
11 Dec - 28 Dec	ANA
27 Dec - 10 Jan	Alaska Airlines
29 Dec - 07 Jan	ANA
23 Dec - 03 Jan	Air Canada
11 Dec - 05 Jan	ANA
22 Dec - 31 Dec	Delta
17 Dec - 28 Dec	ANA
18 Dec - 25 Dec	American Airlines
18 Dec - 28 Dec	Asiana Airlines

Also check the deals for one-way flights from New York 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 return flights from New York to Sydney in December from $1222

Return flights