AirHint found the following cheapest return flights from New York (LGA) to Sydney (SYD) in December 2026 (see full year).

Return flights

04 Dec - 13 Dec	United
09 Dec - 13 Dec	Delta
12 Dec - 03 Jan	United
22 Dec - 29 Dec	Delta
18 Dec - 10 Jan	Air Canada
20 Dec - 04 Jan	United
21 Dec - 03 Jan	United
17 Dec - 04 Jan	United
20 Dec - 27 Dec	Korean Air
17 Dec - 03 Jan	United
18 Dec - 03 Jan	United
18 Dec - 01 Jan	Qantas
10 Dec - 17 Dec	Qantas

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 986€

Return flights