Cheapest return flights from New York to Sydney in December from $1543

Best time to book flights for New York (LGA) to Sydney (SYD) flights at AirHint

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

Return flights

01 Dec - 08 Dec United
03 Dec - 12 Dec Air Canada
28 Dec - 07 Jan United
25 Dec - 15 Jan Delta
24 Dec - 18 Jan Delta
23 Dec - 14 Jan United
14 Dec - 14 Jan United
22 Dec - 17 Jan United
17 Dec - 31 Dec United
17 Dec - 01 Jan United
28 Dec - 04 Jan Qantas
21 Dec - 10 Jan ANA
27 Dec - 10 Jan ANA
15 Dec - 21 Dec Delta

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

Skyscanner

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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